US 11,851,625 B2
Reservoir management by controlling acid gas build-up in reservoir by partial CO2 removal processes
Milind Vaidya, Dhahran (SA); Sebastien Duval, Dhahran (SA); Feras Hamad, Dhahran (SA); Ghulam Shabbir, Dhahran (SA); Nasser Al-Aslai, Dhahran (SA); Ahmad Bahamdan, Dhahran (SA); Richard Baker, Newark, CA (US); Tim Merkel, Newark, CA (US); and Kaaeid Lokhandwala, Newark, CA (US)
Assigned to SAUDI ARABIAN OIL COMPANY
Filed by Saudi Arabian Oil Company, Dhahran (SA); and Membrane Technology and Research, Inc, Newark, CA (US)
Filed on May 20, 2021, as Appl. No. 17/326,083.
Prior Publication US 2022/0380693 A1, Dec. 1, 2022
Int. Cl. C10L 3/10 (2006.01); C09K 8/594 (2006.01); B01D 53/22 (2006.01); B01D 53/52 (2006.01); B01D 53/62 (2006.01); B01D 71/52 (2006.01)
CPC C10L 3/103 (2013.01) [B01D 53/228 (2013.01); B01D 53/526 (2013.01); B01D 53/62 (2013.01); B01D 71/52 (2013.01); C09K 8/594 (2013.01); C10L 3/104 (2013.01); B01D 2256/24 (2013.01); B01D 2257/304 (2013.01); B01D 2257/504 (2013.01); B01D 2325/20 (2013.01); C10L 2290/02 (2013.01); C10L 2290/10 (2013.01); C10L 2290/46 (2013.01); C10L 2290/541 (2013.01); C10L 2290/548 (2013.01)] 37 Claims
OG exemplary drawing
 
1. A method of capturing sulfur compounds from an acid gas waste stream in an isolated field, the method comprising:
introducing a gas stream to an acid gas removal unit, the gas stream comprising natural gas, carbon dioxide and hydrogen sulfide;
separating the gas stream in the acid gas removal unit to produce an acid gas stream and a sweet gas stream, wherein the acid gas removal unit is operable to produce the sweet gas stream of quality for further processing or sale, wherein the sweet gas stream comprises natural gas and the acid gas stream comprises hydrogen sulfide and carbon dioxide;
introducing the acid gas stream to an acid gas enrichment unit;
separating the acid gas stream in the acid gas enrichment unit to produce an enriched acid gas stream and a waste gas stream, the waste gas stream comprising carbon dioxide and the enriched acid gas stream comprising hydrogen sulfide, and wherein the acid gas enrichment unit utilizes a removal process operable to selectively separate carbon dioxide and hydrogen sulfide in the acid gas stream;
introducing the enriched acid gas stream to an enriched acid gas reinjection compressor;
compressing the enriched acid gas stream in the enriched acid gas reinjection compressor to an operating pressure to generate an enriched acid gas reinjection stream, the operating pressure exceeding pressure of a reservoir; and
injecting the enriched acid gas reinjection stream into the reservoir.