Shock-release fluid fracturing method and apparatus
US7810570B2 · kind B2 · utility
6Cited by
7References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2006 |
| Grant date | Oct 12, 2010 |
| Priority date | — |
| Expiry date | Oct 13, 2027 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/2605
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A shock tool is adapted to a bottom hole tool assembly for isolating a zone in a subterranean formation accessed by a wellbore. Fracturing fluid such as nitrogen is accumulated at fracturing pressures uphole of the shock tool for subsequent and rapid release to the formation. The tool assembly can be suspended from a conveyance string in which fluid is accumulated for shock release through a valve of the shock tool and through an injection tool to the zone isolated by the injection tool. After a first zone is shocked, the tool assembly can be moved to a new zone, or multiple shocks can be applied cyclically at the selected zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.