公开(公告)号：US20190263685A1

公开(公告)日：2019-08-29

申请号：US15905991

申请日：2018-02-27

Applicant: Chevron U.S.A. Inc.

Inventor： Nitesh BHUWANIA ,  Prakhar PRAKASH ,  Evan Shigeto HATAKEYAMA ,  Christopher MARCOTTE

IPC: C02F1/44 ,  B01D61/00

Abstract: Processes and systems form diluted brine from saturated brine without direct addition of soft or contaminated water in an oil and/or gas treatment facility. Water containing salt contaminants is fed to a forward osmosis membrane. The salt contaminants can be cations, anions, carbonate, bicarbonate and combinations thereof. A saturated brine solution is fed to a draw side of the forward osmosis membrane which allows water to pass from the feed side to the draw side and minimizes the passage of the salt contaminants from the feed side to the draw side. A diluted brine solution having a TDS concentration lower than a TDS concentration of the saturated brine solution is removed from the draw side outlet of the forward osmosis membrane. A concentrated contaminated water stream having a TDS concentration higher than a TDS concentration of the contaminated water feed is removed from the feed side outlet of the forward osmosis membrane.

公开(公告)号：US20220168686A1

公开(公告)日：2022-06-02

申请号：US17493927

申请日：2021-10-05

Applicant: CHEVRON U.S.A. INC.

Inventor： Daniel CHINN ,  Nitesh BHUWANIA ,  Alice Zunqing HE

IPC: B01D53/22 ,  B01J20/28 ,  B01D53/00 ,  F25J3/06

Abstract: The present invention is directed to a method of capturing CO2 from a FCC regenerator using select membranes.

公开(公告)号：US20190383128A1

公开(公告)日：2019-12-19

申请号：US16441089

申请日：2019-06-14

Applicant: Chevron U.S.A. Inc.

Inventor： Daniel CHINN ,  Brent A. HETRICK ,  Nitesh BHUWANIA ,  Shabbir HUSAIN ,  Sam J. MISHAEL

IPC: E21B43/40 ,  B01D53/14 ,  E21B41/00 ,  E21B43/16 ,  C01B17/04

Abstract: Disclosed are methods and systems for reducing elemental sulfur production in a gas production plant that includes receiving produced fluids high in hydrogen sulfide, removing hydrogen sulfide and converting hydrogen sulfide to elemental sulfur in a Claus unit. An acid gas stream is diverted from a feed line to the Claus unit in the gas processing plant and directed to a multistage acid gas compressor. An elemental sulfur production rate is reduced without reducing a production rate of the produced fluids. The compressed acid gas stream can be injected into a subterranean formation. In some embodiments, the gas production plant is integrated with an oil processing and gas injection plant.