System, apparatus, and method of conducting measurements of a borehole
US8978782B2 · kind B2 · utility
3Cited by
55References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2010 |
| Grant date | Mar 17, 2015 |
| Priority date | — |
| Expiry date | Jan 11, 2030 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/08
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A bias unit having a support body in use to be integrated with a drilling assembly and rotatable therewith for drilling a borehole penetrating a geological formation. A pad is pivotally connected to the support body proximate to the leading edge of the pad. A spring-driven push rod is positioned and preloaded to engage the pad, proximate to the trailing edge of the pad, and to urge the pad outward from the support body to contact the borehole wall during drilling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.