Well pipe perforating gun
US5477785A · kind A · utility
19Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 27, 1995 |
| Grant date | Dec 26, 1995 |
| Priority date | — |
| Expiry date | Jan 27, 2015 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/116
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A well pipe perforating gun (10) is improved by the utilization of a pulverable support structure (14) to hold the explosive shaped charges (18a, 18b, etc.) and the fireset (20). When the gun (10) is fired, the support structure (14) disintegrates substantially into fragments too small to obstruct the flow of oil or natural gas from a surrounding earth formation into or through the well pipe (12) within which the gun is disposed. Optionally, the support structure (14) is assembled from a number of segments (14a, 14b, etc.) linked together in sequential fashion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.