Downhole injector system for CT and wireline drilling
US8307917B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2007 |
| Grant date | Nov 13, 2012 |
| Priority date | — |
| Expiry date | Dec 8, 2028 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B23/01
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus for moving tubing through a borehole is disclosed. The apparatus includes a surface injector assembly and a downhole injector assembly with a driving mechanism to move the tubing through the borehole, an anchoring system for securing the downhole injector assembly downhole to a cased portion of a borehole wall and connections for receiving a power supply form the surface. A method of moving tubing through a borehole is also disclosed. The method involves attaching a downhole injector assembly to a cased portion of a borehole wall sufficiently downhole such that the downhole injector assembly can supply weight to a drilling assembly, and injecting tubing through the borehole using the downhole injector assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.