Retrievable frac mandrel and well control stack to facilitate well completion, re-completion or workover and method of use
US7775288B2 · kind B2 · utility
6Cited by
36References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 6, 2006 |
| Grant date | Aug 17, 2010 |
| Priority date | — |
| Expiry date | Feb 15, 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 stack 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 stack is mounted to a top of the tubing head spool and seals off against a top of the retrievable frac mandrel. Once 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.