Progressive cavity wellbore pump and method of use in artificial lift systems
US6675902B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2001 |
| Grant date | Jan 13, 2004 |
| Priority date | — |
| Expiry date | Jun 25, 2021 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/126
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An artificial lift system used to produce fluids from boreholes such as oil and gas wells. The system uses a progressive cavity (PC) downhole pump system which can be inserted into the borehole, seated, operated, flushed and removed using conventional or coiled sucker rod tubing. The progressive cavity pump system includes a tubular body with a stator and a rotor within the stator. The rotor is connected to a rotatable string on one end and an arrowhead assembly on the other. A seating mandrel assembly maintains the rotor within the stator. The seating mandrel assembly has a component configured to engage with the arrowhead assembly so that the pump may be removed from a downhole location.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.