Method and apparatus for formation damage removal
US6722438B2 · kind B2 · utility
7Cited by
40References
10Claims
0Family size
Inventor
Key dates
| Filing date | Oct 17, 2002 |
| Grant date | Apr 20, 2004 |
| Priority date | — |
| Expiry date | Oct 17, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B37/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of removing formation damage through the controlled injection of fluids into the formation, followed by a controlled sudden release of pressure in the formation, an under-balanced surge, which causes fluid and damaging materials to flow back into the well bore. This method is most effective when repeated more than once.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.