Establishing hydraulic communication between relief well and target well
US10590706B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 2, 2015 |
| Grant date | Mar 17, 2020 |
| Priority date | — |
| Expiry date | Apr 21, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/024
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In accordance with embodiments of the present disclosure, systems and methods for establishing hydraulic communication between a relief wellbore and a target wellbore during relief well applications are provided. Present embodiments include a perforating gun that uses an explosively formed penetrator (EFP) to establish hydraulic communication between a relief well and the target well for well kill operations. The EFP may be detonated downhole according to the Misznay-Schardin effect, thereby releasing a projectile toward the target well to form a relatively large hole through the casing/cement between the wellbores. The EFP may be positioned in a desired orientation with respect to the target well, in order that the projectile may be directed from the relief well directly into the target well. In some embodiments, the disclosed perforating gun may include several EFP charges positioned along one side of the gun at approximately 0 to 10 degree phasing from each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.