Rotary drive apparatus for downhold pump
US4716961A · kind A · utility
20Cited by
6References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 6, 1987 |
| Grant date | Jan 5, 1988 |
| Priority date | — |
| Expiry date | Feb 6, 2007 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/126
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A rotary drive apparatus is provided for connection to a rotary drive string extending downwardly in a well to a rotary downhole pump. Separate axial load bearing and rotary drive spindles are provided and are separately connected to the rotary drive string by readily releasable connectors so as to permit axial adjustment of the rotary drive string while preventing loss of the string into the well in the event of release or slippage of one of the connectors. The design also permits repair or adjustment of the drive apparatus without removal of the rotary drive string from the well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.