Apparatus and method for drilling a well
US9388636B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 13, 2011 |
| Grant date | Jul 12, 2016 |
| Priority date | — |
| Expiry date | Jan 1, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B7/067
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for forming a controllable bend angle in a drill string in a wellbore comprises attaching an upper housing to a drill string. At least, one drive motor is anchored in the upper housing. A middle housing is operably coupled to the at least one drive motor. A lower housing is operably coupled to the at least one drive motor. The at least one drive motor is controllably operated to rotate the middle housing by a first rotation angle with respect to the upper housing, and to rotate the lower housing by a second rotation angle with respect to the upper housing, to generate a desired bend angle between the middle housing and the lower housing at a target toolface orientation between the bend angle and the upper housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.