Controlling transient pressure conditions in a wellbore
US7284612B2 · kind B2 · utility
27Cited by
32References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2004 |
| Grant date | Oct 23, 2007 |
| Priority date | — |
| Expiry date | Apr 14, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/04
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method and apparatus for use in a wellbore includes running a tool string to an interval of the wellbore, and activating a first component in the tool string to create a transient underbalance pressure condition in the wellbore interval. Additionally, a second component in the tool string is activated to create a transient overbalance pressure condition in the wellbore interval, or vice versa.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.