Method and apparatus for firing borehole perforating apparatus
US4629009A · kind A · utility
2Cited by
9References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 10, 1984 |
| Grant date | Dec 16, 1986 |
| Priority date | — |
| Expiry date | Sep 10, 2004 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/11855
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Method and apparatus for firing perforating apparatus in a borehole. A mechanically operated firing assembly is run into the borehole on the end of a cable and latched onto a perforating apparatus. Tension is pulled on the cable. At a predetermined tension force a firing rod is automatically released and as a result of force exerted by a compression spring driven into impactment with a percussion firing head to thereby detonate the perforating apparatus. Additionally, the firing assembly can be reset by application of downward force thereto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.