US Patent No. 10,363,517

SYSTEMS AND METHODS TO DEHYDRATE HIGH ACID GAS STREAMS USING MEMBRANES IN AN OIL AND GAS PROCESSING PLANT


Patent No. 10,363,517
Issue Date July 30, 2019
Title Systems And Methods To Dehydrate High Acid Gas Streams Using Membranes In An Oil And Gas Processing Plant
Inventorship Nitesh Bhuwania, Richmond, CA (US)
Shabbir Husain, Houston, TX (US)
Daniel Chinn, Danville, CA (US)
Ronald P. MacDonald, Mill Valley, CA (US)
Tapan K. Das, Albany, CA (US)
Assignee CHEVRON U.S.A. INC., San Ramon, CA (US)

Claim of US Patent No. 10,363,517

1. A system for de-bottlenecking an integrated oil and gas production plant including hydrogen sulfide removal and sour-gas injection, comprising:a water-selective membrane for receiving a teed stream comprising water-saturated sour gas containing 1-50% hydrogen sulfide by volume and forming a first retentate stream depleted in water and a first permeate stream enriched in water;
a hydrogen sulfide-selective membrane for receiving the first retentate stream to form a second retentate stream depleted in hydrogen sulfide and a second permeate stream enriched in hydrogen sulfide;
one or more gas processing plants for receiving the second retentate stream and further processing the second retentate stream to produce sales gases; and
a permeate compressor for compressing the second permeate stream and injecting the second permeate stream into an underground formation.