Actuating device associated with a drill string and comprising a hydrostatic drilling fluid circuit, actuation method and application thereof
US5310012A · kind A · utility
83Cited by
6References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 16, 1992 |
| Grant date | May 10, 1994 |
| Priority date | — |
| Expiry date | Jul 16, 2012 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B23/042
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention is a device for the remote actuation of equipment (3) associated with a drill string (1) through a hydraulic displacement mechanism (10;53,58) co-operating with a distributor (7;25,26,27;47) associated with the drilling fluid. The displacement mechanism directly converts the hydraulic energy of the drilling fluid into actuating mechanical energy with the co-operation of no other fluid than the drilling fluid. The invention further relates to an actuating method using the device and has an application of directional drilling in the petroleum field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.