US Pat. No. 9,443,185

RUGGED RFID TAGS

VALLOUREC OIL AND GAS FRA...

1. A rugged UHF RFID tag, comprising:
a UHF RFID tag;
an overmolded cap;
a base, wherein the UHF RFID tag is secured to a top portion of the base and wherein the overmolded cap encapsulates the UHF
RFID tag and the top portion of the base; and

a retaining lock ring, wherein the retaining lock ring is attached to the base, and the retaining lock ring includes a cantilevered
spring that allows for flexure in only one direction.

US Pat. No. 9,140,530

METHOD AND DEVICE FOR INSPECTING A THREADING OF A TUBULAR CONNECTION USED IN THE OIL INDUSTRY

VALLOUREC OIL AND GAS FRA...

1. A device for inspecting a threading of a tubular component for exploration or working of hydrocarbon wells, the device
comprising:
a threaded support that can cooperate by makeup with the threading of the tubular component;
means for blocking advance of the threaded support during makeup with the threading of the tubular component;
a longitudinal rail fixed to the means for blocking the advance of the threaded support and extending in a direction belonging
to a plane passing through the axis of the threading of the threaded support;

means for inspecting the threading of the tubular component; and
means for longitudinal guidance to guide the means for inspecting the threading in translation along the longitudinal rail,
wherein the means for inspecting the threading of the tubular component comprises two arms, each including a first and a second
end, the first ends being connected together by a deformable portion that allows an angular displacement between the second
ends, the second ends each carrying a contact element, the inspection means further comprising means for determining the displacement.

US Pat. No. 9,080,711

LUBRICATING COMPOSITION WITH AN ADAPTABLE COEFFICIENT OF FRICTION, FOR A THREADED ELEMENT OF A COMPONENT OF A TUBULAR THREADED JOINT

VALLOUREC OIL AND GAS FRA...

1. A film-forming lubricating composition for make up of threaded joints suitable for covering at least one thread and a screwing
abutment of a threaded element of a component of a tubular threaded joint with a film in the solid state which is adhesive
to said thread and said screwing abutment, said screwing abutment being intended to bear against another abutment of another
component of said tubular threaded joint in the terminal make up phase and said lubricating composition comprising:
i) a solid lubricant;
ii) a matrix, comprising in % by weight of the matrix:
5 to 96% polyethylene homopolymer;
2 to 30% carnauba wax;
2 to 30% zinc stearate;
0 to 50% of a calcium sulphonate derivative;
0 to 15% alkyl polymethacrylate;
0 to 1% coloring agent; and
0 to 1% anti-oxidant; and
iii) a braking additive which is dispersed in the matrix and selected in order to impart to the composition, in addition to
lubrication, a coefficient of friction selected in such a way as to obtain a torque on shoulder resistance value which is
at least equal to a threshold value,

wherein the braking additive is arranged to allow a torque on shoulder resistance value to be obtained which is at least equal
to a threshold value equal to 100% of a torque on shoulder resistance reference value of a grease of type API RP 5A3 obtained
for the tubular threaded joint,

wherein the braking additive is selected from the group consisting of bismuth oxide, titanium oxide, colloidal silica, acrylic
polymers and carbon black,

wherein the matrix is of a solid consistency, not sticky to the touch, and
particles of the solid lubricant are dispersed in the matrix with the braking additive.
US Pat. No. 9,394,594

LOW ALLOY STEEL WITH A HIGH YIELD STRENGTH AND HIGH SULPHIDE STRESS CRACKING RESISTANCE

VALLOUREC OIL AND GAS FRA...

1. A low alloy steel, comprising Fe, impurities or residuals from production or casting, and, by weight:
C: 0.3% to 0.5%;
Si: 0.2% to 0.5%;
Mn: 0.1% to 1%;
P: 0.03% or less;
S: 0.005% or less;
Cr: 0.3% to 1.5%;
Mo: 1.1% to 1.5%;
Al: 0.01% to 0.1%;
V: 0.03% to 0.06%;
Nb: 0.04% to 0.15%;
Ti: 0 to 0.015%; and
N: 0.01% or less,
wherein the steel consists of a martensitic structure.

US Pat. No. 9,395,028

METHOD FOR FINISHING A TUBULAR THREADED MEMBER WITH A DRY PROTECTION COATING

VALLOUREC OIL AND GAS FRA...

1. A process for finishing a tubular threaded element, comprising:
applying only a single coating that is an antigalling coating in a form of a layer at least to a surface of a threading to
produce a solid coating, and

subjecting the surface to be coated to a surface treatment for improving adhesion of the coating,
wherein constituents of the coating comprise a solid matrix and, in the matrix, a dispersion of particles of at least one
solid lubricant, and

wherein the solid matrix is lubricating and presents a rheological behaviour of plastic or viscoplastic type.

US Pat. No. 9,194,515

THREADED JOINT FOR PIPES

VALLOUREC OIL AND GAS FRA...

1. A threaded joint for pipes comprising a pin and a box, each having a contact surface including a threaded portion and an
unthreaded metal contact portion, the unthreaded metal contact portion including a sealing surface and a shoulder surface,
the shoulder surface of the pin being located on an end surface of the pin, a non-contacting region in which the pin and the
box do not contact each other being present between the sealing surfaces and the shoulder surfaces of the pin and the box,
the threaded joint having one or more grooves formed in the shoulder surface of at least one of the pin and the box and extending
to the non-contacting region and to an interior of the threaded joint, characterized in that
at least the contact surface of at least one of the pin and the box has a solid lubricating coating exhibiting plastic or
viscoplastic rheological behavior formed thereon, and

a total volume V (mm3) of the grooves and a coating weight W (g) of the solid lubricating coating satisfy the following equation (1):

V/W?24 (mm3/g)  (1).

US Pat. No. 9,562,400

THREADED TUBULAR COMPONENT AND RESULTING CONNECTION

VALLOUREC OIL AND GAS FRA...

1. A tubular element for drilling and/or working hydrocarbon wells, comprising:
an end portion having at least one threaded zone, wherein the end portion is at least partially coated with a dry film which
comprises a matrix and at least one migrating sliding agent in the matrix principally distributed in the vicinity of a free
surface of the lubricating dry film, the migrating sliding agent being concentrated to 65% by weight in an upper 15 microns
of a thickness of the dry film,

wherein said at least one sliding agent is selected from the group consisting of:
polydimethylsiloxane type silicone oil with a surface tension of less than 24 mN/m and a kinematic viscosity in the range
100 to 1850 mm2/s at 20° C., and

perfluoropolyether with a kinematic viscosity in the range 150 to 1850 mm2/s at 20° C. or functionalized alkylamide or phosphate with a molecular mass in the range 1850 to 3100 g/mol, such that the
dry film has a coefficient of friction of less than 0.07 at loads of less than 40 N and more than 0.1 at loads of more than
200 N.

US Pat. No. 9,470,344

COMPONENT FOR DRILLING AND OPERATING HYDROCARBON WELLS

VALLOUREC OIL AND GAS FRA...

1. A set of two components comprising a first component and a second component, the set being used in drilling and operating
hydrocarbon wells that is substantially tubular in form, comprising:
a first end of the first component connected to a second end of the second component, the first end including:
a terminal portion having a first abutment surface to cooperate by interference with a corresponding first abutment surface
on the second end, and

a sealing surface to cooperate by interference with a corresponding sealing surface on the second end, such that a sealing
surface of the set is defined by interference between the sealing surface of the first end and a corresponding sealing surface
of the second end when first and second components are connected,

the terminal portion being preceded by a threaded zone of the first end to mate with a corresponding threaded zone of the
second end; and

a reinforcing member,
wherein a compressible volume is provided in a thickness of the terminal portion and partially beneath the sealing surface
of the set, so as to reduce radial stiffness of the terminal portion by at least 20%, while conserving at least 60% of axial
stiffness,

wherein the compressible volume is bounded by an annular recess, borders of the annular recess being formed by a part of an
inner wall of the first end and an outer surface of the reinforcing member, the annular recess opening between the first abutment
surface and a distal end of the reinforcing member, and

wherein the distal end of the reinforcing member and the first abutment surface of the first end contact a same continuous
planar surface of the first abutment surface on the second end, such that the annular recess is free of any part of the second
end when first and second components are connected.

US Pat. No. 9,273,383

LOW-ALLOY STEEL HAVING A HIGH YIELD STRENGTH AND A HIGH SULPHIDE-INDUCED STRESS CRACKING RESISTANCE

VALLOUREC OIL AND GAS FRA...

1. A light alloy steel, comprising, by weight:
C: 0.3% to 0.5%;
Si: 0.1% to 1%;
Mn: 1% or less;
P: 0.03% or less;
S: 0.005% or less;
Cr: 0.3% to 1%;
Mo: 1.29% to 2%;
W: 0.52% to 1%;
V: 0.03% to 0.25%;
Nb: 0.01% to 0.15%;
Al: 0.01% to 0.1%; and
Fe;
wherein
a microstructure of the light alloy steel consists of a martensitic structure, and
Ti is not deliberately added and is an impurity obtained from the steel production such that the content of Ti is less than
0.005%.

US Pat. No. 9,273,521

THREADED CONNECTION

VALLOUREC OIL AND GAS FRA...

1. A threaded connection, comprising:
a first and a second tubular component, the first tubular component comprising a male end comprising a distal surface and
a threaded zone disposed on an external peripheral surface of the male end, the second tubular component comprising a female
end comprising a distal surface and a threaded zone disposed on an internal peripheral surface of the female end, the threaded
zone of the male end being threaded up into the threaded zone of the female end,

the threaded zones comprising respective male and female threads including a width which increases from the respective distal
surface of the male and female ends,

the threads comprising load flanks including negative angles over at least a portion of a radial dimension of the load flanks,
and stabbing flanks, with a radial clearance subsisting in a connected state of at least one between crests of the male threads
and roots of the female threads and between crests of the female threads and roots of the male threads, with an axial clearance
subsisting in the connected state between the stabbing flanks of the male and female threads,

the distal surface of at least one of the male end and the female end being brought into axial abutting contact against a
corresponding abutment surface,

the stabbing flanks being at an angle in a range 1° to 15°, and
the female end comprising a substantially tapered surface and a recess between the threaded zone of the female end and an
abutment surface of the female end, the recess including a substantially cylindrical surface and a surface of revolution disposed
between the threaded zone of the female end and the substantially tapered surface, the substantially tapered surface being
adjacent to the abutment surface of the female end.

US Pat. No. 9,206,376

GALLING-RESISTANT THREADED TUBULAR COMPONENT, AND PROCESS FOR COATING SAID COMPONENT

VALLOUREC OIL AND GAS FRA...

1. A galling-resistant threaded tubular component for drilling or operating hydrocarbon wells, the tubular component comprising:
at one of its ends a threaded zone produced on its external or internal peripheral surface depending on whether the threaded
end is male or female in type, wherein at least a portion of the end is coated with a dry film comprising a fluorourethane
matrix,

wherein the fluorourethane matrix is obtained by cross-linking fluoroethylene vinylether.

US Pat. No. 9,206,930

DEVICE FOR PROTECTING A FEMALE END OF A THREADED TUBULAR CONNECTION COMPONENT, HAVING AN ANTI-UNSCREWING BRAKE

VALLOUREC OIL AND GAS FRA...

1. A device for protecting a female end of a component of a threaded tubular connection for drilling and working hydrocarbon
wells, the female end of the component including at least one internal threading, an annular end surface, and an internal
surface placed respectively upstream and downstream of the internal threading and respectively having first and second selected
orientations, the device comprising:
a body having a longitudinal axis and including an external threading configured to cooperate with the internal threading;
and

first and second annular flexible sealing elements placed respectively upstream and downstream of the external threading and
configured to provide first and second seals respectively at the internal surface and the annular end surface,

wherein the first and second sealing elements have selected first and second orientations at least one of which differs by
an angle of at least 10° from the corresponding second or first orientation of the female end before screwing the device onto
the female end and are deformable by axial bending to acquire, by surface contact with the internal surface and the annular
end surface, an energy that at least partially opposes any unintentional unscrewing when the female end is screwed onto the
body into a final position, and the first sealing element is in a form of an annular tongue, the annular tongue being connected
to the body via an interior periphery thereof and projects radially outwardly from the longitudinal axis,

wherein an internal surface of the female end is an annular abutment surface,
wherein the body is configured so that when screwing on and at a moment the first sealing element comes into contact with
the internal surface, the second sealing element is positioned at an axial distance from the annular end surface which is
in a range from about 0.5 mm to about 1 mm,

wherein the second sealing element projects radially outwardly from the longitudinal axis and from an outer circumferential
surface of the body, and

wherein a distal end of the first sealing element, that is farthest from the interior periphery of the body, is configured
to contact the internal surface of the female end downstream of the internal threading.

US Pat. No. 9,076,095

EXTENDABLE IDENTIFICATION TAG

Vallourec Oil and Gas Fra...

1. An identification tag, comprising:
an electronic module configured to transmit information;
a body portion including the electronic module; and
a sleeve portion comprising a coil embedded therein,
wherein the sleeve portion extends along an outside surface of the body portion,
wherein the sleeve portion is movable along a length of the outside surface of the body portion, and
wherein the movement of the sleeve portion along the length of the outside surface of the body portion changes a length of
the identification tag.

US Pat. No. 9,863,190

ASSEMBLY FOR PRODUCING A GALLING-RESISTANT THREADED TUBULAR CONNECTION

VALLOUREC OIL AND GAS FRA...

1. An assembly, comprising a first and a second tubular component each with an axis of revolution and each at one of their
ends with a threaded zone produced on the outer or inner peripheral surface of the component depending on whether the threaded
end is male or female in type, said ends being capable of cooperating by makeup and ending in a terminal surface, a first
contact surface being on one of the ends and a second contact surface being on the corresponding end, such that the first
and second contact surfaces come into contact during makeup of the ends, wherein the first and second contact surfaces are
respectively each coated with a first and a second dry thermoplastic film the matrices of which are constituted by a thermoplastic
polymer, only one of the first and second dry thermoplastic films further comprising a liquid amorphous thermoplastic resin
with a dynamic viscosity in the range of 2000 to 40000 mPa·s at 25° C.

US Pat. No. 9,290,714

GALLING-RESISTANT THREADED TUBULAR COMPONENT AND PROCESS FOR COATING SAID COMPONENT

VALLOUREC OIL AND GAS FRA...

1. A process for coating a galling-resistant steel tubular component made of one or more metals for drilling or operating
hydrocarbon wells, the tubular component including at an end thereof a threaded zone produced on one of an external or internal
peripheral surface of the tubular component, depending on whether the end having the threaded zone is male or female in type,
the process comprising:
dissolving one or more mineral salts, which are not reactive towards the metals of the tubular component, in a solvent so
as to form a solution;

pre-heating the threaded zone of the tubular component;
depositing the solution directly on at least a portion of a steel surface of the threaded zone after the pre-heating; and
evaporating off the solvent to obtain a dry film having a crystalline mineral structure having a high specific surface area
and which is not reactive towards the steel of the tubular component,

wherein the specific surface area of the dry film having a crystalline mineral structure is more than 20 m2/g,

wherein the solution is an alkaline silicate dissolved in water, and
wherein the pre-heating the threaded zone of the tubular component includes heating the threaded zone between 50° C. and 250°
C. before depositing the solution.

US Pat. No. 9,109,726

SET FOR OBTAINING A THREADED CONNECTION, METHOD FOR MAKING UP AND BREAKING OUT SAID CONNECTION, AND USE OF SAID CONNECTION IN A RISER

VALLOUREC OIL AND GAS FRA...

17. A set for obtaining a threaded connection used in hydrocarbon wells, comprising:
a first tubular component comprising one end provided on its external circumferential surface with at least two threaded zones
of identical lead;

a second tubular component provided on its internal circumferential surface with at least two threaded zones;
a third tubular component comprising one end provided on its internal circumferential surface with at least one threaded zone
and provided on its external circumferential surface with at least one threaded zone, wherein

the threaded zone provided on the internal circumferential surface of the end of the third component is configured to cooperate
by makeup with one of the two threaded zones of the end of the first component,

the threaded zone provided on the external circumferential surface of the end of the third component is configured to cooperate
by makeup with one of the two threaded zones of the second component, the second and third components further comprising means
for defining the end of makeup of said threaded zones,

the other threaded zone provided on the end of the first component is configured to cooperate by makeup with the other threaded
zone provided on the second component,

in which the means for defining the end of makeup between the threaded zone provided on the external circumferential surface
of the end of the third component and the corresponding threaded zone of the second component are abutment surfaces respectively
provided on the terminal surface of the end of the third component and on a surface formed by a shoulder on the second component,
and

in which the end of the first component comprises, on its terminal surface, a sealing surface which is configured to cooperate
by tightening with a corresponding sealing surface provided on a surface formed by a shoulder on the second component.

US Pat. No. 9,863,560

EXPANSIBLE THREADED JOINT AND METHOD FOR MAKING SAME

VALLOUREC OIL AND GAS FRA...

1. An expandable threaded connection used in exploration or working of hydrocarbon wells, comprising:
a first tubular component comprising a male end comprising a first and a second threaded zone disposed on its external peripheral
surface and an insertion region provided between said first and second threaded zones, the insertion region comprising a first
annular tongue comprising a prominent abutment face, and a first concavity adjacent to the first tongue and set back therefrom;

a second tubular component comprising a female end comprising a third and a fourth threaded zone disposed on its internal
peripheral surface and an insertion region provided between said third and fourth threaded zones, the insertion region comprising
a second annular tongue comprising a prominent abutment face, and a second concavity adjacent to the second tongue and set
back therefrom;

the first and second threaded zones of the male end matching the third and fourth threaded zones of the female end for makeup
together, the threaded zones comprising respectively male and female threads;

the first and second tongues being respectively engaged in the second and first concavities in a made up condition, an abutment
face of at least one of the first and second tongues being in contact with respectively the second or first concavity, the
male end comprising a first surface between the first threaded zone and the first tongue and the female end comprising a second
surface between the third threaded zone and the second concavity;

wherein in the made up condition, said first and second surfaces define an annular space comprising a zone with a first radial
dimension on the first and third threaded zone side and a zone with a second radial dimension on the first tongue side and
second concavity side, said zone with the second radial dimension after expansion being configured to form a metal-metal contact
seal, the first tongue then bearing on the second tongue,

wherein the first radial dimension is larger than the second radial dimension, and
wherein the first surface of the male end has a first substantially cylindrical portion close to the first threaded zone,
a second substantially tapered portion with a substantially tapered shape with a diameter which increases from the first substantially
cylindrical portion, a rounded peak and a third portion with a substantially tapered shape and with a diameter which decreases
with distance form the first threaded zone.

US Pat. No. 9,568,126

THREADED JOINT FOR STEEL PIPE

VALLOUREC OIL AND GAS FRA...

1. A threaded joint for a steel pipe, the threaded joint comprising:
a pin and a box, each of the pin and the box is provided with a contact surface that includes an unthreaded metal contact
portion having a seal portion, and a threaded portion;

an ultraviolet ray-curable resin coating film positioned on the contact surface of at least one of the pin and the box;
an acrylic silicone resin coating film disposed on and substantially coextensive with the ultraviolet ray-curable resin coating
film; and

wherein a thickness of the acrylic silicone resin coating film is 5 ?m to 10 ?m (0.0002 to 0.0004 inches).

US Pat. No. 9,599,273

PROCESS FOR COATING A THREADED TUBULAR COMPONENT, THREADED TUBULAR COMPONENT AND RESULTING CONNECTION

VALLOUREC OIL AND GAS FRA...

1. A threaded tubular component, comprising at one of its ends a threaded zone arranged on an outer or inner peripheral surface
depending on whether the threaded zone is a male or female end,
wherein at least a portion of the male or the female end is coated with at least one dry film having a Shore D hardness of
more than 50 and comprising a mono-component matrix of polyurethane and polyurea; and

a proportion of urethane functionality in the mono-component matrix of polyurethane and polyurea is at least 55% by weight
with respect to urea functionality;

wherein the mono-component matrix of polyurethane and polyurea is obtained from a polyol monomer with a molecular mass in
the range 300 to 6000 g/mol, a chain extension agent and free aromatic isocyanates which are optionally cured by polyaddition
with moisture, and

wherein the mono-component matrix of polyurethane and polyurea comprises:
a multifunctional isocyanate pre-polymer with a functionality of at least 2, prepared from a mixture of a polyether, a polybutadiene
or hydroxylated polyester polyols with a molecular mass in the range 300 to 6000 g/mol and aromatic isocyanates of diphenylmethane
diisocyanate, in excess;

a co-reagent of a mono- or bis-oxazolidone to initiate reaction and dilute the pre-polymer;
an aliphatic polyisocyanate curing agent of hexamethylene diisocyanate to maintain curing;
a catalyst for the pre-polymer of dimorpholinodiethyl ether or dibutyl tin laurate;
a plasticizer to control foaming during formation of the dry film; and
a moisture scavenger to stabilize the pre-polymer during storage by capturing residual water, said moisture scavenger being
p-toluene sulphonyl isocyanate, trimethyl orthoformate or trimethyl orthoacetate.

US Pat. No. 9,611,971

DEVICE FOR PROTECTING A MALE END OF A COMPONENT OF A FLEXIBLE-JOINT THREADED TUBULAR CONNECTION

VALLOUREC OIL AND GAS FRA...

18. A temporary protector of a male end of a component of a threaded tubular connection for drilling or operation of oil wells,
including externally at least one threading and including a free end part, the component including a body downstream of the
male end, the protector comprising:
a coupling configured to protect at least a part of the external threading and the free end part and including a threading
that can engage with the threading of the male end; and

a sealing device configured to be placed in contact with the component, at least in a part located downstream of the external
threading of the male end, and with the coupling to provide a seal downstream of the external threading;

wherein the sealing device comprises a portion of small diameter with a length between 20 and 80 mm and with a bore as a cylinder
of revolution, the portion of small diameter including an internal sealing surface that can interact hermetically with an
external surface of the body having a maximum tolerance on diameter above 1% and a roughness Ra greater than 10 ?m, and a
portion of large diameter integral with the portion of small diameter and including an internal sealing surface interacting
hermetically with an external surface of the coupling, the sealing device being radially elastic, and

wherein the protector further comprises an envelope at least partly surrounding the coupling and at least partly the portion
of large diameter, the envelope comprising a folded edge on one end of the coupling and an end opposite to the edge, clamping
the portion of large diameter against the coupling.

US Pat. No. 9,605,781

THREADED CONNECTION COMPRISING AT LEAST ONE THREADED ELEMENT WITH AN END LIP FOR A METAL TUBE

VALLOUREC OIL AND GAS FRA...

1. A ready-to-use threaded tubular connection to constitute casing strings or tubing strings for hydrocarbon wells, risers
or drill strings for those same wells, comprising:
a female threaded portion at an end of a first tubular component and a male threaded portion at an end of a second tubular
component,

the female threaded portion comprising a female thread, at least one female sealing surface on its inner peripheral surface,
and at least one female axial abutment surface,

the male threaded portion comprising a male thread, at least one male sealing surface on its outer peripheral surface, at
least one male axial abutment surface, and a lip provided between the male thread and a male axial abutment surface located
at a free end of the threaded portion which is distant from the thread, the male sealing surface being located on the lip
adjacent to the thread,

the male thread being made up into the female thread such that the male axial abutment surface is in contact with the female
axial abutment surface,

the male sealing surface being in interference contact with the corresponding female sealing surface, in order to form a metal-to-metal
seal,

a distal portion of the lip between the male sealing surface and the male axial abutment surface being radially distant from
a corresponding surface of the female threaded portion,

wherein at least one leak channel, being substantially radial, is provided in one of the male or female threaded portions,
the at least one leak channel placing an interior chamber, which is formed by both a surface of the distal portion of the
lip that extends from the male sealing surface to the male axial abutment surface and by the corresponding surface of the
female threaded portion that extends from the female sealing surface to the female axial abutment surface, in communication
with the interior chamber of the connection when the male axial abutment surface is in contact with the female axial abutment
surface, and wherein the at least one leak channel is offset from both of the axial abutment surfaces.

US Pat. No. 9,089,906

IDENTIFICATION TAGS AND INSTALLATION TECHNIQUES

Vallourec Oil and Gas Fra...

1. A system comprising:
an identification tag including:
electronics configured to wirelessly transmit information;
a body configured to receive the electronics, wherein the body has a substantially cylindrical profile with a plurality of
ribs formed parallel to the axis of the cylindrical profile of the body and having tapered ends protruding from an exterior
circumferential surface of the body; and

a component configured to join two tubular members to one another, the component having an opening at an axial end surface
of the component and that extends in a direction parallel to the longitudinal axis of the component and is configured to receive
the identification tag, the opening being configured such that the opening is smaller than the width of the body including
the plurality of ribs, wherein insertion of the identification tag causes compression of the plurality of ribs to facilitate
retention of the body within the opening and the tapered ends facilitate alignment and insertion of the identification tag
into the opening.

US Pat. No. 9,568,125

THREADED JOINT FOR STEEL PIPES

VALLOUREC OIL AND GAS FRA...

1. A threaded joint for steel pipes comprising:
a pin and a box,
the pin having a male thread and a lip comprising:
(i) a sealing surface; and
(ii) a nose portion provided with a shoulder surface,
the box having a female thread, a sealing surface and a shoulder surface,
the male thread being interengaged with the female thread,
the sealing surface of the pin being in sealing contact with the corresponding sealing surface of the box, the shoulder surface
of the pin being arranged at an end face of the pin, the sealing surface of the pin being located on a pipe end side near
the male thread, the nose portion existing between the sealing surface and the shoulder surface, said nose portion not contacting
a portion of the box facing said the nose portion of the pin,

wherein the shoulder surface of the pin comprises two distinct adjacent surfaces,
a main shoulder surface on an inner side; and
a sub shoulder surface on an outer side, and
in that the corresponding shoulder surface of the box facing the shoulder surfaces of the pin comprises two distinct adjacent
surfaces,

a main shoulder surface on an inner side; and
a sub shoulder surface on an outer side,
said main shoulder surfaces of the pin and box being disposed so as to prevent a radially inward deformation of the lip, said
sub shoulder surfaces of the pin and the box being disposed so as to limit a radially outward deformation of the lip, said
main shoulder surface of the pin having a greater radial dimension than said sub shoulder surface of the pin, at least said
main shoulder surface of the pin being in axial abutment with at least the corresponding main shoulder surface of the box,

wherein at least a part of the nose portion of the pin has an outside peripheral surface which is not in prolongation of the
sealing surface of the pin and the sealing surface of the pin, the outside surface of the nose portion of the pin and sub
shoulder surface of the pin are not aligned and wherein the sealing surface of the box, the inner surface of the portion of
the box facing the outside surface of the nose portion of the pin and the sub shoulder surface of the box are not aligned,
and further wherein

the sub shoulder surfaces of the pin and the box do not contact each other in a normal tightened state, where the normal tightened
state means that the pin and the box are tightened to reach a proper tightening torque, and

wherein when compared to the normal tightened state, higher compressive load is acting or an excessive tightening torque is
applied, the sub shoulder surfaces contact and suppress outward deformation of the lip.

US Pat. No. 9,500,043

THREADED JOINT WITH LOW TIGHTENING TORQUE

VALLOUREC OIL AND GAS FRA...

1. A threaded tubular connection comprising:
a first tubular component made up onto a second tubular component, the tubular components being intended for exploration or
working a hydrocarbon well, or to form a landing string;

the first tubular component comprising a first substantially cylindrical body with an axis of revolution terminated by an
external abutment, the external abutment being linked to an external circumference of the first body via a fourth profile
with an external diameter which increases from the external abutment towards the first body, and linked to a male threaded
connection portion extended by a terminal non-threaded portion forming an internal abutment surface at its axial end, such
that the internal abutment is linked to an internal circumference of the first body via a first profile with an internal diameter
decreasing from the internal abutment towards the inside of the first body;

the second tubular component comprising a second substantially cylindrical body defining a bearing surface at one free end
for the external abutment, the bearing surface being linked to an external circumference of the second body via a third profile
with an external diameter which increases from the bearing surface towards the second body, the second body comprising an
initial non-threaded portion on its internal surface linking the bearing surface to a female threaded connection portion which
can be made up onto the male threaded connection portion, and terminating in an internal shoulder facing the internal abutment,
the internal shoulder being linked to the internal circumference of the second body via a second profile with an internal
diameter which decreases from the internal shoulder towards inside of the second body;

wherein at least one of the first profile or the second profile is convex or concave; and
a length of at least one of the first profile and the second profile along an axis of revolution is more than 1.5875 mm and
less than a length of the terminal portion;

a length of at least one of the third profile and the fourth profile along the axis of revolution is more than 1.5875 mm and
less than a length of the initial portion.

US Pat. No. 10,113,674

ASSEMBLY FOR PRODUCING A THREADED CONNECTION FOR DRILLING AND OPERATING HYDROCARBON WELLS, AND RESULTING THREADED CONNECTION

VALLOUREC OIL AND GAS FRA...

1. An assembly for producing a threaded connection, comprising:a first and a second tubular component with an axis of revolution and each respectively including at one of their ends at least a first continuous threaded zone following a first helix on an outer or inner circumferential surface of the component depending on whether the threaded end is male or female in type, and configured to cooperate together upon makeup,
the first threaded zones of the ends including a variable width dovetail thread profile viewed in longitudinal section passing through the axis, the ends respectively finishing in a terminal surface,
at least one of the ends including a lip provided between the threaded zone and the terminal surface, the lip carrying a sealing surface configured to cooperate in a sealing interference fit with a corresponding sealing surface disposed facing the other end when the connection is in the made up state,
wherein the lip is hollowed out by a groove adjoining the threaded zone and the sealing surface, the length of the groove being calculated as follows:

in which:
LFL is a value for pitch of load flanks;
SFL is a value for pitch of stabbing flanks;
TL is a threading length;
RLP is a reference position length;
n is a number of helixes in threading, wherein viewed in a longitudinal section passing through the axis of revolution, the groove includes an annular portion linked to the threaded zone via a first inclined portion and linked to the zone comprising the sealing surface via a second inclined portion, and wherein thickness of the groove is less than thickness of the lip by an amount of 0.2 to 2.5 mm.

US Pat. No. 9,816,646

THREADED CONNECTION FOR DRILLING AND WORKING HYDROCARBON WELLS

VALLOUREC OIL AND GAS FRA...

1. A threaded connection comprising:
a first and a second tubular component used for drilling and working hydrocarbon wells, each including a respective male and
female end, the male ends comprising at least one threaded zone on an external peripheral surface and ending in a terminal
surface, the female end comprising at least one threaded zone on an internal peripheral surface and ending in a terminal surface,

the threaded zones comprising, over at least a portion of their length, threads each comprising, viewed in longitudinal section
passing through an axis of the tubular components, a thread crest, a thread root, a load flank, and a stabbing flank,

wherein profiles of the male and female load flanks, viewed in longitudinal section passing through an axis of revolution
of the connection, are a continuous curve with a convex or concave form, a profile of the male flanks being complementary
to that of the female flanks over at least 70% of the continuous curve,

wherein profiles of the male and female stabbing flanks and the profiles of the male and female load flanks are a continuous
curve with a convex or concave form, the profile of the stabbing flanks being orientated in a manner opposite to the profile
of the load flanks for a same portion of the threaded zone, and

wherein the profile of the male stabbing flanks, viewed in longitudinal section passing through the axis of the connection,
is convex, the profile of the male load flanks being concave.

US Pat. No. 9,725,671

LUBRICANT FILM-FORMING COMPOSITION AND SCREW JOINT FOR STEEL PIPE

VALLOUREC OIL AND GAS FRA...

1. A lubricant film-forming composition, comprising, as a composition:
40 to 80 mass % of a base oil selected from the group consisting of pentaerythritol fatty acid ester, trimethylolpropane fatty
acid ester, and mixtures thereof;

5 to 20 mass % of a solidifying agent consisting of paraffin wax; and
10 to 40 mass % of a solid lubricant selected from the group consisting of alkali metal salt of hydroxystearic acid, alkali
earth metal salt of hydroxystearic acid, and mixtures thereof, wherein

a total content of the base oil, the solidifying agent, and the solid lubricant is 85 mass % or more and 100 mass % or less,
and

the lubricant film-forming composition does not contain Pb or Zn.

US Pat. No. 9,089,902

HOLE DRILLING APPARATUS AND PROCESS FOR EDGE MOUNTED RFID TAG

Vallourec Oil and Gas Fra...

1. A drilling template, comprising:
a first hole configured to receive a through-bolt assembly;
a second hole configured to receive a cam assembly;
a third hole configured to receive a guide pin;
a through-bolt assembly disposed through the first hole and configured to anchor the drilling template to an underlying material,
such that the drilling template is rotatable about the through-bolt assembly; and

a cam assembly disposed through the second hole and configured to rotate the drilling template about the through-bolt.

US Pat. No. 9,739,400

COUPLING FOR CONNECTING TUBULAR ELEMENTS FOR BOTTOM-HOLE ASSEMBLIES

VALLOUREC OIL AND GAS FRA...

1. A coupling for connecting tubular elements for an oil well installation, comprising:
a tubular body, with two ends of the body each comprising a portion of internal threading to join to a tubular element, the
tubular body further comprising a central portion separating the two ends each comprising a portion of threading and having
a wall thickness greater than a wall thickness of the ends of the body; and

an extension segment that extends from one of the ends of the tubular body, after the portion of internal threading, the extension
segment having a same outside diameter as that of the tubular body and an inside diameter greater than or equal to that of
the portion of internal threading,

wherein the extension segment comprises a housing, comprising an opening onto an external surface of the coupling, inside
which an electronically responsive identification tag is housed.

US Pat. No. 9,752,710

TUBULAR THREADED JOINT HAVING IMPROVED HIGH TORQUE PERFORMANCE

VALLOUREC OIL AND GAS FRA...

1. A tubular threaded joint constituted by a pin and a box each having a contact surface comprising an unthreaded metal contact
portion including a seal portion and a shoulder portion and a threaded portion, characterized in that the contact surface
of at least one of the pin and the box has a first lubricating coating and a second lubricating coating, the first lubricating
coating being a solid lubricating coating formed on the unthreaded metal contact portion of the contact surface, the second
lubricating coating being selected from a viscous liquid lubricating coating and a solid lubricating coating and formed on
at least the portion of the contact surface where the first lubricating coating is not present, the first lubricating coating
having a coefficient of friction which is higher than that of the second lubricating coating, the second lubricating coating
being positioned on top if there is a portion of the contact surface in which both the first lubricating coating and the second
lubricating coating are present.

US Pat. No. 9,714,730

IDENTIFICATION TAGS AND SYSTEMS SUITABLE FOR THIN-WALLED COMPONENTS

Vallourec Oil and Gas Fra...

1. A system comprising:
a coupling of an Oil Country Tubular Good to join two tubular members to one another, the coupling including a circumferentially
outer surface, a first end including a first engagement portion to receive one of the two tubular members, and a second end
including a second engagement portion to receive the other of the two tubular members,

a skirt portion that extends in an axial direction of the coupling beyond the first engagement portion, the skirt portion
including inner or outer threads on a respective inner or outer diameter of the skirt portion, the inner or outer threads
configured to engage corresponding threads on the first end of the coupling,

wherein the skirt portion includes an opening to receive an identification tag, and
wherein when one of the two tubular members is engaged in the first engagement portion of the first end of the coupling, the
skirt portion is spaced apart in a radial direction from the one of the two tubular members to define an annular space between
the one of the two tubular members and the skirt portion, the annular space being open to an environment outside the coupling.

US Pat. No. 9,822,591

TUBULAR COMPONENT FOR DRILLING AND OPERATING HYDROCARBON WELLS, AND RESULTING THREADED CONNECTION

VALLOUREC OIL AND GAS FRA...

1. A tubular component for a threaded connection, including at one of its ends a threaded zone formed on its external or internal
peripheral surface depending on whether the threaded end is of a male or female type, said end of the tubular component including
a terminal surface, said threaded zone including, over at least a portion thereof, a plurality of threads, such that each
thread of the plurality of threads comprises, when viewed in a longitudinal section passing through an axis of the tubular
component,
a thread crest,
a thread root,
a load flank, and
a stabbing flank,
a respective axial width of thread crests of the plurality of threads decreases in a direction of the terminal surface while
a respective axial width of thread roots of the plurality of threads increases in the direction of the terminal surface, wherein

each load flank and each stabbing flank includes a profile, and at least one of the profile of the load flank and the profile
of the stabbing flank, viewed in the longitudinal section passing through the axis of the tubular component, includes as a
central portion a continuous curve provided with a point of inflection, said continuous curve with the point of inflection
being convex adjacent to the thread crest and concave adjacent to the thread root, wherein

the continuous curve with the point of inflection is connected respectively,
at a first distal portion of the continuous curve to a first rectilinear segment, the first rectilinear segment being connected
to the thread crest by a first radius of curvature, and

at a second distal portion of the continuous curve, to a second rectilinear segment, the second rectilinear segment being
connected to the thread root by a second radius of curvature, wherein

a radial height of the first rectilinear segment is in a range 50% to 100% of a difference between a radial height of the
stabbing flank and a radial height of the load flank, and wherein

a radial height of the second rectilinear segment is in the range 50% to 100% of the difference between the radial height
of the stabbing flank and the radial height of the load flank.

US Pat. No. 9,719,617

THREADED JOINT FOR STEEL PIPES

VALLOUREC OIL AND GAS FRA...

1. A threaded joint for steel pipes comprising a pin and a box in which the pin has male threads and a lip portion having
a sealing surface and a shoulder surface, and the box has female threads, a sealing surface, and a shoulder surface, wherein
at the time of make-up, the male threads engage with the female threads, the sealing surface of the pin sealingly contacts
the sealing surface of the box, and the shoulder surface of the pin abuts the shoulder surface of the box,
wherein the sealing surface of the pin is constituted solely by a tapered surface portion, the sealing surface of the box
comprises, in a direction from the female threads towards the shoulder surface, a first curved surface having a radius of
curvature from 15 mm to 120 mm, a tapered surface, and a second curved surface having a radius of curvature from 15 mm to
120 mm, the tapered surface is a surface produced by rotating a straight line which is sloped with respect to a joint axis
about the joint axis, and a part of the sealing surface of the box between the first curved surface and the second curved
surface is constituted solely by the tapered surface.

US Pat. No. 9,644,432

THREADED TUBULAR COMPONENT AND RESULTING CONNECTION

VALLOUREC OIL AND GAS FRA...

1. A tubular element configured for drilling and/or working a hydrocarbon well, comprising:
an end portion comprising at least one threaded zone,
wherein the end portion is at least partially coated with a dry film, including a thermoplastic or thermoset matrix including
microcapsules filled with compounds in liquid form chosen from linear polydimethylsiloxanes with a kinematic viscosity in
a range of 100 to 12500 mm2/s at 25° C. and with a molecular mass in a range of 10000 to 80000 g/mole.

US Pat. No. 10,017,665

PROCESS FOR PREPARING A STABLE AQUEOUS DISPERSION OF POLYAMIDE-IMIDE WHICH IS FREE OF CARCINOGENIC, MUTAGENIC OR REPROTOXIC SUBSTANCES, AND APPLICATION TO COATINGS

VALLOUREC OIL AND GAS FRA...

1. A process for preparing a stable aqueous polyamide-imide dispersion, the process comprising:selecting a polyimide-imide powder; and
producing a dispersion comprising the polyamide-imide powder, a polar aprotic solvent having a boiling point of more than 180° C. at 760 mm Hg and water, wherein the polar aprotic solvent is at least one selected from the group consisting of dimethylsulphoxide, sulpholane, and ?-butyrolactone, and
wherein the aqueous polyamide-imide dispersion comprises a thixotropic agent which is thermally stable at a temperature of 250° C. or more and is at least one selected from the group consisting of an organically modified sheet silicate of laponite, saponite, bentonite, and smectite type having a pH of from 9 to 11 in a 2% by weight suspension.

US Pat. No. 9,909,371

ASSEMBLY FOR PRODUCING A THREADED CONNECTION, METHOD FOR MAKING UP AND BREAKING OUT SAID CONNECTION AND USE OF SAID CONNECTION IN A WORK OVER RISER

VALLOUREC OIL AND GAS FRA...

1. An assembly for producing a threaded connection, comprising:
a first and a second tubular component with a same axis of revolution, each respectively including at one of its ends a male
threaded zone produced on its external circumferential surface, said ends each respectively finishing in a terminal surface
comprising a structure, the structures forming together a direct drive dog clutch device so as to fix the first and second
tubular components in rotation; and

a third tubular component which also includes the axis of revolution and includes at each of its ends, on its internal circumferential
surface, a female threaded zone,

one of the two male threaded zones being cooperable by screwing with one of the two female threaded zones while the other
male threaded zone is cooperable by screwing with the other female threaded zone,

wherein the male threaded zone of the first tubular component and the corresponding female threaded zone of the third tubular
component comprise a free rotation mechanism such that at an end of makeup of said male threaded zone into said female threaded
zone, the tubular components carrying said male and female threaded zones are freely rotational with respect to each other,

wherein the free rotation mechanism is distinct from the direct drive dog clutch device,
wherein the free rotation mechanism comprises more than three grooves which are excavated perpendicularly to the axis of revolution
in said male and female threaded zones, such that once said male and female threaded zones have been made up one into the
other, each interposed zone defined by two consecutive grooves provided on one of said threaded zones faces a groove provided
on the other threaded zone,

the grooves being disposed regularly at a lead which is substantially equal to 1.5 times a lead of the threaded zones, and
the grooves including a same width equal to 0.75 times the lead of the threaded zones, and

wherein the male and female threaded zones remain engaged after makeup when free rotation occurs.

US Pat. No. 9,790,610

ELECTRO PLATING DEVICE

VALLOUREC OIL AND GAS FRA...

1. An electro plating device which forms an electro plating layer on a surface of a female screw carved on an inner circumferential
surface of a pipe end of a steel pipe, the electro plating device comprising:
a pipe inside seal mechanism which occludes an inner channel of the steel pipe at a position distanced from the female screw
in a pipe axial direction of the steel pipe;

a tubular insoluble electrode which is disposed in the pipe end so as to be opposite to the female screw;
a plating solution feed mechanism which includes a plurality of nozzles which extend radially with a pipe axis of the steel
pipe as a center, and is disposed outside the pipe end; and

a pipe end seal mechanism which accommodates the nozzles thereinside and is mounted to the pipe end in a state where the pipe
end seal mechanism closely contacts an outer circumferential surface of the pipe end,

wherein when viewed in the pipe axial direction,
a tip of each of the nozzles is positioned between the female screw and the insoluble electrode, and
each of the nozzles injects the plating solution from an injection port formed on the tip toward a direction which intersects
an extension direction of the nozzle, the direction being a rotational direction of a clockwise direction or a counterclockwise
direction in which the pipe axis is the center, and

wherein the tip of each of the nozzles is positioned at an outer portion of the steel pipe from a tip of the female screw
in the pipe axial direction of the steel pipe.

US Pat. No. 10,012,332

TUBULAR THREADED JOINT HAVING IMPROVED HIGH-TORQUE MAKEUP PROPERTIES

VALLOUREC OIL AND GAS FRA...

1. A tubular threaded joint comprised of a pin and a box each having a contact surface comprising a threaded portion and an unthreaded metal contact portion which includes a seal portion and a shoulder portion, a first solid lubricating coating is present on or over a portion including the shoulder portion of the contact surface of at least one of the pin and the box, a second solid lubricating coating is present on at least a portion of the contact surface of the at least one of the pin and the box not having the first solid lubricating coating, wherein the first solid lubricating coating is present on the contact surface or on the second solid lubricating coating, the Knoop hardness of the first solid lubricating coating is higher than the Knoop hardness of the second solid lubricating coating.

US Pat. No. 9,957,631

ELECTROPLATING APPARATUS FOR STEEL PIPES

VALLOUREC OIL AND GAS FRA...

1. An electroplating apparatus for a steel pipe, the electroplating apparatus is configured to apply an electroplated coating to a female thread formed on a pipe end portion of the steel pipe,the electroplating apparatus comprising:
an inner seal member that is disposed in an interior of the steel pipe, the inner seal member dividing the interior of the steel pipe at a location longitudinally inward of a region on which the female thread is formed;
a capsule that is sealingly attached to the pipe end portion, the capsule having a discharge outlet through which a plating solution inside the capsule is discharged, the capsule having an opening that facilitates discharge of the plating solution inside the capsule;
an insoluble anode having a cylindrical shape, the insoluble anode being disposed in an inside of the pipe end portion, the insoluble anode passing through the capsule in a sealed relationship to the capsule; and
a plating solution supply mechanism that supplies the plating solution to the inside of the pipe end portion sealed by the inner seal member and the capsule,
wherein the plating solution supply mechanism includes:
a plating solution supply tube that extends along an axis of the insoluble anode, the plating solution supply tube projecting from a leading end of the insoluble anode in the inside of the pipe end portion; and
a plurality of nozzles that are attached to a leading end portion of the plating solution supply tube, the nozzles being configured to eject the plating solution between an outer peripheral surface of the insoluble anode and an inner peripheral surface of the pipe end portion, and
wherein a cover is provided at the leading end of the insoluble anode and the plating solution supply tube passes through the cover in a sealed relationship to the cover.

US Pat. No. 10,253,573

THREADED JOINT FOR STEEL PIPES

VALLOUREC OIL AND GAS FRA...

1. A threaded joint for steel pipes, comprising a tubular pin and a tubular box, the pin and the box being made up by screwing the pin onto the box,the pin including a shoulder surface, a seal surface, and a male threaded portion;
the box including a shoulder surface, a seal surface, and a female threaded portion, corresponding to the shoulder surface of the pin, the seal surface thereof, and the male threaded portion thereof, respectively;
the male threaded portion and the female threaded portion each being a tapered threaded portion including threads having a trapezoidal profile, each thread of the male threaded portion and the female threaded portion having a profile width that is larger at a base side than at a crest side,
wherein:
the male threaded portion has a thread width that gradually decreases along a thread helix thereof and a groove width that gradually increases along the thread helix, in a screwing direction in which the pin moves with respect to the box and the male threaded portion is screwed; and the female threaded portion has a groove width that gradually decreases along a thread helix thereof and a thread width that gradually increases along the thread helix, in the screwing direction,
in a made-up state, the shoulder surfaces are in contact with each other, the seal surfaces are in contact with each other, load flanks of the male threaded portion are in contact with load flanks of the female threaded portion, stabbing flanks of the male threaded portion are in contact with stabbing flanks of the female threaded portion, roots of the male threaded portion are in contact with crests of the female threaded portion, and clearances are provided between crests of the male threaded portion and roots of the female threaded portion, the roots of the male threaded portion and the crests of the female threaded portion configured to have an interference fit in the radial direction of the pin and the box so that in the course of screwing the pin onto the box, the roots of the male threaded portion and the crests of the female threaded portion begin contacting each other before the seal surfaces begin contacting each other, and
the stabbing flanks of the male threaded portion form an angle ? with respect to a pipe axis at a leading side in the screwing direction and the load flanks of the male threaded portion form an angle ? with respect to the pipe axis at a leading side in the screwing direction, wherein the angle ? and the angle ? are each 90 degrees or more, and the condition ?>? is satisfied.

US Pat. No. 10,145,495

TUBULAR THREADED CONNECTION

VALLOUREC OIL AND GAS FRA...

1. A threaded tubular connection, comprising:a first tube, the first tube including a pin member extending from an end of a main body of the first tube to a terminal end of the first tube, the pin member including two radially offset sections of external threads, the two radially offset sections of external threads including a first thread section, a first non-threaded portion, a second non-threaded portion that is radially offset from the first non-threaded portion, and a second thread section, the first and second non-threaded portions being separate and distinct from the first and second thread sections, the first thread section being separated from the second thread section by the first non-threaded portion and the second non-threaded portion, the first thread section being located between the terminal end of the first tube and the first non-threaded portion and the second thread section being located between the second non-threaded portion and the end of the main body of the first tube, the first non-threaded portion including a first central seal surface located entirely on the first non-threaded portion; and
a second tube, the second tube including a box member extending from an end of a main body of the second tube to a terminal end of the second tube, the box member including two radially offset sections of internal threads, the two radially offset sections of internal threads including a third thread section, a third non-threaded portion, a fourth non-threaded portion that is radially offset from the third non-threaded portion, and a fourth thread section, the third and fourth non-threaded portions being separate and distinct from the third and fourth thread sections, the third thread section being separated from the fourth thread section by the third non-threaded portion and the fourth non-threaded portion, the third thread section being located between the terminal end of the second tube and the third non-threaded portion and the fourth thread section being located between the fourth non-threaded portion and the end of the main body of the second tube, the fourth non-threaded portion including a second central seal surface located entirely on the fourth non-threaded portion,
wherein the pin member includes a pin critical cross-section (PCCS) located at a thread engaged root of the second thread section that is closest to the end of the main body of the first tube, the box member includes a box critical cross-section (BCCS) located at a thread engaged root of the fourth thread section that is closest to the end of the main body of the second tube, the box member includes a box intermediate critical cross-section (BICCS) located at a thread engaged root of the third thread section that is closest to the second central seal of the second tube, and the pin member includes a pin intermediate critical cross-section (PICCS) located at a thread engaged root of the first thread section that is closest to the first central seal of the first tube,
wherein, in a made-up state, the first central seal surface engages the second central seal surface in a radial direction so as to form a fluid tight seal that extends in an axial direction of the threaded tubular connection, and, in the made-up state, the threaded tubular connection includes first and second radial clearance portions that are axially located on opposite sides of the fluid tight seal to isolate the fluid tight seal from the first through fourth thread sections of the tubular connection, wherein the first and second radial clearance portions are radial clearances between facing surfaces of the first non-threaded portion and the fourth non-threaded portion and are separate and distinct from the first through fourth thread sections,
wherein the first and second tubes satisfy the following relationships:
PCCS is within approximately ±5% of BCCS, and
each of PCCS and BCCS is within approximately ±5% (BICCS+PICCS), and
wherein, in the made-up state, the fluid tight seal formed between the first and second central seal surfaces is the sole fluid tight seal of the threaded tubular connection.

US Pat. No. 10,309,168

METHOD FOR CHECKING A SCREWING STATE OF A TUBULAR THREADED SEAL

VALLOUREC OIL AND GAS FRA...

1. A method for monitoring a makeup state of a threaded tubular connection, the threaded connection including a male threaded tubular element and a female threaded tubular element configured to contact along an abutment surface, the method comprising:during makeup of the male threaded element into the female threaded element, measuring a variation over time of at least one dimensional characteristic of at least one of the elements in a pre-defined direction, the measuring comprising:
measuring a length of the female threaded element in an axial direction in a portion between the abutment surface and an end of the female threaded element near the abutment surface; and
measuring a thickness of the female threaded element in a direction radial to the abutment surface, and
analyzing the variation with time of the characteristic to determine a makeup state for the threaded connection,
wherein the dimensional characteristic is deformation of at least one of the elements and is measured by a propagation time of an ultrasound signal.

US Pat. No. 10,107,047

CONNECTION PROTECTOR WITH A FLEXIBLE GASKET FOR A TUBULAR COMPONENT

VALLOUREC OIL AND GAS FRA...

1. A protector for a threaded tubular connection for a tubular component for drilling or operating hydrocarbon wells, provided with an annular surface of a distal end, the protector comprising:a principal body including at least one threading; and
an annular housing including an annular bottom, an outer wall and an inner wall being separated from each other and in which an annular gasket is disposed, the outer wall and the inner wall each including an interior portion and an exterior portion, the exterior portions of the outer wall and the inner wall defining an opening with a width Au, and wherein a distance A between the interior portions of the outer wall and the inner wall is greater than the width Au, a first annular gasket being inserted and retained in the annular housing.

US Pat. No. 10,215,314

TUBULAR THREADED CONNECTION

VALLOUREC OIL AND GAS FRA...

1. A threaded tubular connection, comprising:a first tube, the first tube including a pin member extending from an end of a main body of the first tube to a terminal end of the first tube, the pin member including two radially offset sections of external threads, the two radially offset sections of external threads including a first thread section, a first non-threaded portion, a second non-threaded portion that is radially offset from the first non-threaded portion, and a second thread section, the first and second non-threaded portions being separate and distinct from the first and second thread sections, the first non-threaded portion being separated from the second non-threaded portion by a first abutment surface, the first thread section being located between the terminal end of the first tube and the first non-threaded portion and the second thread section being located between the second non-threaded portion and the end of the main body of the first tube; and
a second tube, the second tube including a box member extending from an end of a main body of the second tube to a terminal end of the second tube, the box member including two radially offset sections of internal threads, the two radially offset sections of internal threads including a third thread section, a third non-threaded portion, a fourth non-threaded portion that is radially offset from the third non-threaded portion, and a fourth thread section, the third and fourth non-threaded portions being separate and distinct from the third and fourth thread sections, the third non-threaded portion being separated from the fourth non-threaded portion by a second abutment surface, the third thread section being located between the terminal end of the second tube and the third non-threaded portion and the fourth thread section being located between the fourth non-threaded portion and the end of the main body of the second tube,
wherein the pin member includes a pin critical cross-section PCCS located at a thread engaged root of the second thread section that is closest to the end of the main body of the first tube, the box member includes a box critical cross-section BCCS located at a thread engaged root of the fourth thread section that is closest to the end of the main body of the second tube, the box member includes a box intermediate critical cross-section BICCS located at a thread engaged root of the third thread section that is closest to the second abutment of the second tube, and the pin member includes a pin intermediate critical cross-section PICCS located at a thread engaged root of the first thread section that is closest to the first abutment of the first tube,
wherein the pin includes a first central seal surface located entirely on the first non-threaded portion between the first thread section and the first abutment surface and the box includes a second central seal surface located entirely on the fourth non-threaded portion between the fourth thread section and the second abutment surface,
wherein, in a made-up state, the first central seal surface engages the second central seal surface in a radial direction so as to form a fluid tight seal that extends in an axial direction of the threaded tubular connection and is separate and distinct from the first and second abutment surfaces, and, in the made-up state, the threaded tubular connection includes first and second radial clearance portions that are axially located on opposite sides of the fluid tight seal to isolate the fluid tight seal from the first through fourth thread sections of the tubular connection, wherein the first and second radial clearance portions are radial clearances between facing surfaces of the first non-threaded portion and the fourth non-threaded portion and are separate and distinct from the first through fourth thread sections,
wherein the first and second tubes satisfy the following relationships:
PCCS is within approximately ±5% of BCCS, and
each of PCCS and BCCS is within approximately ±5% (BICCS+PICCS), and
wherein, in the made-up state, the fluid tight seal formed between the first and second central seal surfaces is the sole fluid tight seal of the threaded tubular connection.

US Pat. No. 10,150,887

COMPOSITION FOR SOLID COATING FORMATION AND TUBULAR THREADED JOINT

VALLOUREC OIL AND GAS FRA...

1. A tubular threaded joint comprisinga pin and a box each of which is provided with a contact surface comprising a threaded portion and an unthreaded metal contact portion,
wherein the contact surface of at least one member of the pin and the box has a solid coating formed by applying a composition for solid coating formation to the contact surface,
wherein the composition comprises a mixed solvent consisting of water and a dipolar aprotic solvent, and a powdery organic resin which is partially soluble at least in the dipolar aprotic solvent,
wherein the powdery organic resin is dissolved or dispersed in the mixed solvent, and
wherein the dipolar aprotic solvent is one or more solvents selected from the group consisting of dimethylsulfoxide and ?-butyrolactone.

US Pat. No. 10,119,637

ASSEMBLY FOR PRODUCING A THREADED CONNECTION FOR DRILLING AND OPERATING HYDROCARBON WELLS, AND RESULTING THREADED CONNECTION

VALLOUREC OIL AND GAS FRA...

1. An assembly for producing a threaded connection, comprising a first and a second tubular component with an axis of revolution and each respectively provided at one of their ends with first threaded zones and second threaded zones, respectively produced on an outer or inner circumferential surface of the component depending on whether a threaded end is male or female in type, in the form of a first and a second helix each provided with a first and a second taper generatrix, the first threaded zones produced in accordance with the first helix to cooperate together in makeup and the second threaded zones produced in accordance with the second helix to cooperate together in makeup, each of the threaded zones defining a thread profile, viewed in a longitudinal section passing through the axis of revolution, provided with load flanks, stabbing flanks, thread crests, and thread roots, wherein:a thread height of threads of the first threaded zones and a thread height of threads of the second threaded zones are each in the range 1 mm to 2.5 mm,
an angle of the load flanks of the first and second threaded zones with a normal to the axis of revolution is in the range 1 to 20 degrees,
an angle of the stabbing flanks of the first and second threaded zones with the normal to the axis of revolution is in the range 3 to 25 degrees, and
the angle of the stabbing flanks of the first threaded zones differ from the angle of the stabbing flanks of the second threaded zones by at least 0.5 degree as an absolute value.

US Pat. No. 10,316,995

SEALED THREADED TUBULAR CONNECTION WHICH IS RESISTANT TO SUCCESSIVE PRESSURE LOADS

VALLOUREC OIL AND GAS FRA...

1. A sealed threaded tubular connection comprising:a male element disposed at an end of a first tubular component including a male threading and a female element disposed at an end of a second tubular component including a female threading corresponding to the male threading, at least one of the elements comprising a lip extending beyond the threading to a free end of one of the male or the female element and the other one of the male or the female element comprising a recess for the lip,
the lip comprising a first zone with a peripheral surface turned towards the other element on which a first metal sealing surface is disposed configured to be radially interference fitted against a corresponding second metal sealing surface disposed on a peripheral surface of the recess of the other element, the lip comprising a second axially located zone between the first zone and the free end of the element comprising a first radial bearing surface turned towards the other element and in contact with a corresponding second radial bearing surface disposed on the peripheral surface of the recess of the other element,
wherein the first and second zones are separated axially by a third zone with a radial stiffness which is less than the first and second zones and capable of being radially deformed towards the other element by a pressure exerted thereon,
wherein a thickness of the third zone is less than a thickness of the first zone and a thickness of the second zone,
wherein the third zone is defined by an annular groove on an external periphery of the lip,
wherein a peripheral surface of the annular groove comprises a cylindrical surface that constitutes a minimum thickness portion of the third zone,
wherein a free end of the female element constitutes a transversely disposed external annular axial abutment surface, the external annular axial abutment surface allows the first metal sealing surface to be positioned axially with respect to the second metal sealing surface to thereby define a respective radial interference fit between the first metal sealing surface and the second metal sealing surface, and allows a first external metal sealing surface to be positioned axially with respect to a second external metal sealing surface to thereby define a respective radial interference fit between the first external metal sealing surface and the second external metal sealing surface, and
wherein the first external metal sealing surface is provided with the male element, and the second external metal sealing surface is provided with the female element, the first and the second external metal sealing surfaces being positioned between the threading and the external annular axial abutment surface.