Method for directionally drilling a first well to intersect a second well
US4458767A · kind A · utility
269Cited by
5References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 28, 1982 |
| Grant date | Jul 10, 1984 |
| Priority date | — |
| Expiry date | Sep 28, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/08
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A first well is directionally drilled to intersect a second well. The second well is magnetized along its well casing to produce a magnetic anomaly which is sensed by a magnetometer located in the first. The drilling of the first well is redirected in accordance with the magnitude of the sensed anomaly so as to cause intersection of the first well with the second well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.