Casing lined oil or gas well
US5085273A · kind A · utility
44Cited by
6References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 5, 1990 |
| Grant date | Feb 4, 1992 |
| Priority date | — |
| Expiry date | Oct 5, 2010 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/08
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
There is disclosed an oil or gas well having a well bore which penetrates a production zone and a casing string which is anchored in the well bore by a column of cement bonded to the casing string and well bore. Connectors are installed as part of the casing string to permit portions thereof opposite the production zone and above the production zone to be respectively contracted or extended in response to subsidence or other causes of axial loading of the string through the cement column.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.