Intelligent controlled process for well lateral coring
US8678109B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2008 |
| Grant date | Mar 25, 2014 |
| Priority date | — |
| Expiry date | Dec 25, 2029 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A system for coring an underground formation surrounding a borehole, comprising: a tool body that can be positioned in the borehole near the formation to be cored, the tool body including a motor; a rotary drive head connected to the motor; a rotary tool connected to the rotary drive head and one end and carrying a drill bit at the other end; a drive mechanism including an operable anchor for anchoring in the borehole and an axial drive for advancing tool body and the rotary tool; and a guide for urging the rotary tool laterally from the borehole into the surrounding formation; wherein the rotary tool is a tubular coring tool conveying an annular drill bit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.