Apparatus and method for rotating coil tubing in a well
US4515220A · kind A · utility
69Cited by
13References
39Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 12, 1983 |
| Grant date | May 7, 1985 |
| Priority date | — |
| Expiry date | Dec 12, 2003 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/068
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Improved coil tubing injection apparatus for servicing wells by running coil tubing thereinto for circulating fluids through the well and having the ability to rotate the coil tubing for performing drilling operations. The apparatus can readily provide concurrent longitudinal and rotational movement of the coil tubing. Methods of servicing wells involving such movement of coil tubing are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.