Capsule charge perforating system
US4739839A · kind A · utility
15Cited by
22References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1986 |
| Grant date | Apr 26, 1988 |
| Priority date | — |
| Expiry date | Dec 19, 2006 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/117
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A perforating gun apparatus includes an elongated radially resilient carrier with a plurality of capsule type shaped charges attached to the carrier in a circumferentially phased pattern. The carrier is capable of passing downward through restricted diameter openings and subsequently expanding so as to hold the shaped charges with a near zero standoff from the well bore which is to be perforated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.