Casing mandrel for facilitating well completion, re-completion or workover
US7921923B2 · kind B2 · utility
30Cited by
56References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 30, 2009 |
| Grant date | Apr 12, 2011 |
| Priority date | — |
| Expiry date | Sep 30, 2029 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/068
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A casing mandrel for an independent screwed wellhead includes a seal bore for receiving a fixed-point packoff connected to a high-pressure mandrel of a pressure isolation tool, and a pin thread adapted for engagement with a box thread of a tubing head supported by the casing mandrel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.