US Patent No. 11,111,765


Patent No. 11,111,765
Issue Date September 07, 2021
Title Well Livening Tool Based On Nitrogen Producing Chemistry
Inventorship Abdulrahman Abdulaziz Al-Mulhem, Dhahran (SA)
Mohammed Abdullah Bataweel, Dhahran (SA)
Assignee Saudi Arabian Oil Company, Dhahran (SA)

Claim of US Patent No. 11,111,765

1. A method for increasing production of fluids from a well having a wellbore extending into a formation having a hydrocarbon reservoir, the method comprising:inserting a tool into the wellbore, the tool comprising:a body defining an interior chamber, the interior chamber containing a plurality of reactants, the plurality of reactants comprising sodium azide;
an ignition component connected to a wireline, the ignition component comprising an igniter;

initiating reaction of the sodium azide to produce nitrogen in-situ in the well, wherein the volume of produced nitrogen is proportional to a true vertical depth and a cross-sectional area of the well, and comprises an amount sufficient to fill the wellbore; and
releasing the nitrogen from the interior chamber into the wellbore to lighten the fluid column in the wellbore and lift fluids in the wellbore.