Method for detecting formation pore pressure by detecting pumps-off gas downhole
US8794350B2 · kind B2 · utility
1Cited by
29References
20Claims
0Family size
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Inventor
Key dates
| Filing date | Dec 19, 2007 |
| Grant date | Aug 5, 2014 |
| Priority date | — |
| Expiry date | May 13, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B21/085
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for the detection of gas invading a wellbore during drilling by the influx of fluids which contain gas from the formations penetrated by a wellbore.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.