Method for formation pressure control while drilling
US6823950B2 · kind B2 · utility
15Cited by
11References
11Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 3, 2002 |
| Grant date | Nov 30, 2004 |
| Priority date | — |
| Expiry date | Dec 12, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/008
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for addressing the problem known as formation breathing occurring during the drilling of a subsea well in an earth formation in performing a series of leak off tests to determine the earth formation fracture propagation pressure and the earth formation fracture reopen pressure and maintaining the hydrostatic pressure on the earth formation in a range between the fracture reopen pressure and the fracture propagation pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.