Subsea duplex pump, subsea pumping system, and subsea pumping method
US11448055B2 · kind B2 · utility
Inventor
Key dates
| Filing date | May 16, 2019 |
| Grant date | Sep 20, 2022 |
| Priority date | — |
| Expiry date | May 16, 2039 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/01
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A subsea pump includes a liquid-gas inlet port for receiving liquid and gas into a first chamber, a plunger in a second chamber, a suction valve communicating the first chamber with a second chamber, a gas discharge conduit, a gas discharge valve communicating the first chamber with the gas discharge conduit, and a liquid discharge port for discharging liquid from the second chamber. The plunger retracts inwardly to create a vacuum in the second chamber that opens the suction valve and pulls liquid from the first chamber into the second chamber. The plunger extends outwardly against the suction to cause the suction valve to close and create a positive pressure that opens the gas discharge valve and forces the gas in the first chamber through the gas discharge valve into the gas discharge conduit. Liquid in the second chamber is discharged through the liquid discharge port via the positive pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.