High velocity string for well pump and method for producing well fluid
US8171997B2 · kind B2 · utility
1Cited by
8References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2008 |
| Grant date | May 8, 2012 |
| Priority date | — |
| Expiry date | Oct 27, 2030 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/10
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of producing a well fluid includes securing a motor to a string of outer tubing and lowering the outer tubing and motor into the well. A rotary pump is secured to a string of inner tubing and lowered into the outer tubing. The pump stabs into cooperative engagement with the motor. Supplying power to the motor rotates the pump, causing well fluid to flow into the outer tubing to an intake of the pump, which pumps the well fluid through the inner tubing to an upper end of the well. Removing the well fluid allows gas to flow up an annulus surrounding the outer tubing to the upper end of the well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.