Steerable drilling system
US7926592B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2006 |
| Grant date | Apr 19, 2011 |
| Priority date | — |
| Expiry date | Mar 8, 2026 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B21/10
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A steerable drilling system including a bias unit and a separator. The separator is arranged to remove particulate matter from the supply of pressurized drilling mud to the actuator of the bias unit. The separator includes a hydrocyclone located upstream of the actuators. The hydrocyclone includes a housing defining a substantially conical recess having a large diameter end and a small diameter end. An inlet is in fluid communication with the large diameter end for providing the drilling mud thereto. A first outlet is in fluid communication with the small diameter end for outlet of relatively dirty mud. A second outlet is in fluid communication with the large diameter end for outlet of a supply of relatively clean mud for the plurality of actuators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.