Double-acting reciprocating downhole pump
US6817409B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 12, 2002 |
| Grant date | Nov 16, 2004 |
| Priority date | — |
| Expiry date | Aug 16, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B47/06
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A positive displacement pump for pumping fluids from a downhole formation to the earth's surface is provided. The pump first comprises a plunger. The plunger is reciprocated axially within the wellbore by a linear actuator, such as a submersible electrical pump, in order to form an upstroke and a downstroke. A pump inlet is disposed near the bottom end of the plunger, while a pump outlet is disposed near the top end of the plunger. The pump is configured such that it is able to pump a first volume of fluid upward within the wellbore during the pump's upstroke, and a second volume of fluid upward within the wellbore during the pump's downstroke. Thus, the pump is “double-acting.”
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.