Full bore automatic gun release module
US6591912B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2001 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | Nov 15, 2021 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/1193
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A perforation gun is secured to the inside bore of a well completion tube by a releasable connection module. The connection module mechanism includes radially expanding anchor dogs that are retained at an expanded position by a latching mechanism that may be released, alternatively, by combustion gas or by wireline. When the perforation gun is discharged, gas from the discharge combustion displaces a retaining piston. Displacement of the retaining piston releases a latch pin and allows the gun weight to shift a secondary release sleeve. Shift of the secondary release sleeve releases a latch dog retention pin and hence, releases the anchor dogs from a meshed connection with the completion tube. The secondary release sleeve may also be shifted by the upward pull of a wireline.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.