Apparatus for cementing from a floating vessel
US4319638A · kind A · utility
7Cited by
1References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 4, 1980 |
| Grant date | Mar 16, 1982 |
| Priority date | — |
| Expiry date | Aug 4, 2000 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/143
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus is provided for cementing an oil well borehole from a floating vessel. A sliding sleeve cementing valve is adapted to be interconnected with a casing string. A drill string to be lowered into the casing string includes a drill pipe, an opening positioner connected to the drill pipe for opening the cementing valve, an anchor connected to the opening positioner to provide sufficient resistance between the drill string and casing string to operate a motion compensator on the floating vessel, and an isolation packer connected to the anchor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.