Method and apparatus for determining downhole pressures during a drilling operation
US7062959B2 · kind B2 · utility
20Cited by
24References
56Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2002 |
| Grant date | Jun 20, 2006 |
| Priority date | — |
| Expiry date | Dec 19, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/087
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method and apparatus is provided to determine downhole pressures, such as annular pressure and/or pore pressure, during a drilling operation. A downhole drilling tool includes at least one conduit and a corresponding gauge. The conduit is positioned in the downhole tool and has an opening adapted to receive downhole fluids. The conduit is positionable in fluid communication with one of the wellbore and the formation whereby pressure is equalized therebetween. The gauge is provided for measuring the pressure in the conduit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.