Rotary drill bit steerable system and method
US8172010B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 1, 2008 |
| Grant date | May 8, 2012 |
| Priority date | — |
| Expiry date | Jan 4, 2029 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/43
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drill bit comprising: a cutting section comprising gage cutters, wherein in the cutting section is a first end of the bit, and wherein the cutting section has a full gage diameter; a heel section comprising a blade, wherein the heel section is at an end of the drill bit opposite the cutting section, and wherein a diameter of the heel section is a full gage diameter, wherein the blade has a high spiral around the drill bit; and a clearance section between the cutting and heel sections, wherein the clearance section comprises a diameter less than full gage, and wherein clearance section extends from the gage cutters of the cutting section to the blade of the heel section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.