Device for generating seismic impulses inside a drilling through the fall of a weight onto an anchored target element
US4773501A · kind A · utility
9Cited by
7References
4Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Sep 21, 1984 |
| Grant date | Sep 27, 1988 |
| Priority date | — |
| Expiry date | Sep 21, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S367/911
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Device for generating seismic impulses for, for example, seismic prospecting, inside a hole or drilling well by impact of a weight or mass falling onto a target element coupled with a wall of the hole or drilling well. The target element is bound up with a variable volume anchorage element capable of being expanded so that it strikes against the wall of the hole or drilling well and is surmounted by a guiding column along which slides a hammer or weight forming the mass. A cable lifting system and magnetic devices enable the hammer or weight to be hoisted to a particular height above the target element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.