Method and apparatus for orienting wellbore perforations
US5010964A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 6, 1990 |
| Grant date | Apr 30, 1991 |
| Priority date | — |
| Expiry date | Apr 6, 2010 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/119
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A wellbore perforating apparatus for forming casing or wellbore wall perforations in inclined wellbores includes a perforating gun, a reference unit for determining the high side of the wellbore and a motor for rotating the reference unit and perforating gun to orient the perforation charges at a predetermined angle with respect to the high side and the wellbore axis so as to optimize the angle at which the hydraulic fracture is initiated in the formation. The apparatus includes a motor section with extensible grippers for non-rotatably securing the motor section with respect to the wellbore and for rotating the reference unit and the perforating gun.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.