Firing head for a perforating gun assembly
US4969525A · kind A · utility
49Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 1, 1989 |
| Grant date | Nov 13, 1990 |
| Priority date | — |
| Expiry date | Sep 1, 2009 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/11852
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A hydraulically actuated firing head for a tubing conveyed well perforating system includes an actuating piston responsive to a differential between tubing pressure and a sealed low pressure zone contained within the firing head. The actuating piston releases a firing piston which initiates a firing sequence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.