Method and system for oriented perforating in a well with permanent sensors
US6378607B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 1999 |
| Grant date | Apr 30, 2002 |
| Priority date | — |
| Expiry date | Jun 9, 2019 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/119
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method and system is provided for perforating a casing in a hydrocarbon well so as to avoid perforating in a direction where a cable resides. A mass of metallic material is clamped to the casing at a predetermined offset angle with respect to the cable. The angular position of the metallic mass is detected using a detector placed inside the casing. Then, a perforating gun is oriented based on the detected angular position of the metallic mass and the predetermined offset angle. Finally, the casing is perforated so as to avoid damage to the cable. The cable comprises a number of electrical conductors and is used to communicate with permanent sensors located on the cable in the vicinity of the casing to be perforated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.