Directional drilling control apparatus and methods
US8360171B2 · kind B2 · utility
70Cited by
55References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2010 |
| Grant date | Jan 29, 2013 |
| Priority date | — |
| Expiry date | Oct 15, 2030 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B7/068
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Methods and apparatus for using a quill to steer a hydraulic motor when elongating a wellbore in a direction having a horizontal component, wherein the quill and the hydraulic motor are coupled to opposing ends of a drill string, by monitoring an actual toolface orientation of a tool driven by the hydraulic motor via monitoring a drilling operation parameter indicative of a difference between the actual toolface orientation and a desired toolface orientation, and then adjusting a position of the quill by an amount that is dependent upon the monitored drilling operation parameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.