Apparatus and methods of setting and retrieving casing with drilling latch and bottom hole assembly
US7503397B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2005 |
| Grant date | Mar 17, 2009 |
| Priority date | — |
| Expiry date | Mar 9, 2026 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/14
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In one embodiment, a top drive system for drilling with casing is provided with an access tool to retrieve a downhole tool. The top drive system for drilling with casing comprises a top drive; a top drive adapter for gripping the casing, the top drive adapter operatively coupled to the top drive; and an access tool coupled to the top drive and adapted for accessing a fluid passage of the top drive system. In another embodiment, a method for retrieving a downhole tool through a tubular coupled to a top drive adapter of a top drive system is provided. The method comprises coupling an access tool to the top drive system, the access tool adapted to provide access to a fluid path in the top drive system and inserting a conveying member into the fluid path through the access tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.