Retrivevable frac mandrel and well control stack to facilitate well completion, re-completion or workover and method of use
US7806175B2 · kind B2 · utility
9Cited by
30References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 11, 2007 |
| Grant date | Oct 5, 2010 |
| Priority date | — |
| Expiry date | May 7, 2028 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/068
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A retrievable frac mandrel and a well control adapter are used to efficiently accomplish well completion, re-completion or workover. The retrievable frac mandrel is inserted in a tubing head spool of a well to be completed, re-completed or re-worked. The well control adapter is mounted to a top of the tubing head spool and seals off against a top of the retrievable frac mandrel. After well completion, re-completion or workover is completed, the frac mandrel can be retrieved from the tubing head spool without killing or plugging the well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.