Directional drilling control apparatus and methods
US8602126B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 15, 2013 |
| Grant date | Dec 10, 2013 |
| Priority date | — |
| Expiry date | Jan 15, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B7/068
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Apparatus and methods to steer a hydraulic motor when elongating a wellbore having a non-vertical component that includes a quill adapted to transfer torque, rotation, or position between a drive assembly and a drillstring, a bottom hole assembly (BHA) including a toolface orientation detector and at least one measurement while drilling (MWD) instrument or wireline-conveyed instrument, and a controller configured to transmit operational control signals to minimize friction between a drillstring and a wellbore, wherein the instrument is configured to detect pressure between an external surface of the BHA and an inner diameter of the wellbore.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.