Apparatus for controlling a well during drilling operations
US4108257A · kind A · utility
21Cited by
9References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 14, 1977 |
| Grant date | Aug 22, 1978 |
| Priority date | — |
| Expiry date | Sep 14, 1997 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B34/14
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method and apparatus for use in controlling a well during drilling operations is disclosed. The method includes actuating a downhole packer and providing for flow in a controlled manner past the packer. The apparatus includes a packer and means for controlling flow past the packer. This abstract is neither intended to define the scope of the invention which, of course, is defined in the claims, nor is it intended to be limiting in anyway.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.