Hydraulic multiphase pump
US6592334B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 21, 2001 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | Dec 21, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B9/1172
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The present invention provides a hydraulically driven multiphase pump system and methods for pumping a fluidstream from the surface of a well. The hydraulically driven multiphase pump system consists of two vertically disposed plungers. The plungers are hydraulically controlled and actuated to work in alternate directions during a cycle using a closed loop hydraulic system. Each cycle is automatically re-indexed to assure volumetric balance in the circuits. An indexing circuit ensures that each plunger reaches its full extended position prior to the other plunger reaching its preset retracted position. A bias member and an acceleration valve are used to prime the indexing circuit for use in low or variable inlet pressure situations. A power saving circuit is used to transfer energy from the extending plunger to the retracting plunger.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.