Method for hydraulic communication with target well from relief well
US10487644B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2014 |
| Grant date | Nov 26, 2019 |
| Priority date | — |
| Expiry date | Feb 22, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/006
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A system and method for establishing hydraulic communication between a relief well and a target well, wherein the relief well intersects with the target well at an intersection point and the relief well includes a distal portion of the relief well that is deviated and intersects the first wellbore from below the intersection point. A directional drilling system and a magnetic ranging system may be used to guide the relief well from a kick-off point to the intersection point. The deviation angle between the two intersecting wells is at least 45 degrees, but may be approximately 90 degrees or obtuse. A deviated portion of the relief well includes a J-shaped or U-shaped trajectory, thus allowing the wellhead of the relief well to be located at a site removed from the wellhead of the target well, but still intersect the target well at a shallow true vertical depth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.