Casing hanger and stabilizer
US4334342A · kind A · utility
9Cited by
8References
5Claims
0Family size
Inventor
Key dates
| Filing date | Feb 1, 1980 |
| Grant date | Jun 15, 1982 |
| Priority date | — |
| Expiry date | Feb 1, 2000 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/0422
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A casing hanger and stabilizer for use during the setting and cementing of surface casing in oil and gas wells, which includes a pair of generally wedge-shaped slip segments having mating faces and removably joined at the faces by a pair of plates, and further provided with interior slip threads or teeth for engaging the surface casing and a plurality of slots in the longitudinal exterior surface to permit the pumping of drilling mud or other fluid between the supporting conductor pipe and the suspended surface casing prior to cementing the surface casing in the conductor pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.