Perforating gun assembly and method for controlling wellbore pressure regimes during perforating
US8555764B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 2011 |
| Grant date | Oct 15, 2013 |
| Priority date | — |
| Expiry date | May 9, 2031 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/1195
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole tool gun string assembly comprises a first perforating gun operable to generate a first pressure at a first location in a wellbore, wherein the first perforating gun comprises a first plurality of perforating charges; a second perforating gun operable to generate a second pressure at a second location in the wellbore, wherein the second pressure is different from the first pressure and the second perforating gun comprises a second plurality of perforating charges, and wherein at least one of the second plurality of perforating charges is operably associated with a secondary pressure generator, where the first perforating gun and the second perforating gun are configured to maintain a pressure at a selected location in the wellbore below a threshold when the first and second perforating guns are activated substantially concurrently.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.