Method and apparatus for sealing a well bore and sidetracking a well from the well bore
US5937955A · kind A · utility
7Cited by
7References
9Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | May 28, 1997 |
| Grant date | Aug 17, 1999 |
| Priority date | — |
| Expiry date | May 28, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/305
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method and apparatus for sealing a pilot well and directionally drilling a directional well from the pilot well by the use of a casing including an easily drillable section positioned through a selected zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.