US 12,421,831 B2
Utilizing high pressure subsea reservoir energy to support low-pressure subsea production wells
Nikhil Dayanand, Houston, TX (US)
Assigned to CHEVRON U.S.A. INC., San Ramon, CA (US)
Appl. No. 18/835,105
Filed by Chevron U.S.A. Inc., San Ramon, CA (US)
PCT Filed Feb. 2, 2022, PCT No. PCT/US2022/014809
§ 371(c)(1), (2) Date Aug. 1, 2024,
PCT Pub. No. WO2023/149867, PCT Pub. Date Aug. 10, 2023.
Prior Publication US 2025/0163780 A1, May 22, 2025
Int. Cl. E21B 43/017 (2006.01); E21B 47/06 (2012.01); F01D 15/08 (2006.01); F16K 27/00 (2006.01)
CPC E21B 43/017 (2013.01) [E21B 47/06 (2013.01); F01D 15/08 (2013.01); F16K 27/003 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system for utilizing high pressure subsea reservoir energy to support low-pressure subsea production wells, the system comprising:
a high-pressure subsea well in production;
a first subsea piping that receives a high-pressure fluid of the high-pressure subsea well;
a low-pressure subsea well in production;
a second subsea piping that receives a low-pressure fluid of the low-pressure subsea well;
a subsea regenerative turbine that receives the high-pressure fluid of the high-pressure subsea well from the first subsea piping;
a subsea pump assembly that operates using energy generated by the subsea regenerative turbine, wherein the subsea pump assembly helps move the low-pressure fluid of the low-pressure subsea well through the second subsea piping; and
an adjustable speed drive positioned between the subsea pump assembly and the subsea regenerative turbine.