Well completion apparatus
US5150756A · kind A · utility
27Cited by
9References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 25, 1991 |
| Grant date | Sep 29, 1992 |
| Priority date | — |
| Expiry date | Feb 25, 2011 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B21/10
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
There is disclosed apparatus for use in completing a well whose well bore has a substantially horizontally extending lower end into which a casing string is to be lowered, the apparatus including a tool adapted to be connected in the casing string and having a plug therein above a back pressure valve installed in the lower end of the string to form a buoyant chamber within the casing string which is filled with a low density fluid for lowering into the substantially horizontally extending lower end of the well bore.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.