Excitation device and method for downhole seismic testing using the same
US8689929B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 29, 2012 |
| Grant date | Apr 8, 2014 |
| Priority date | — |
| Expiry date | Mar 29, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/147
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An excitation device for downhole seismic testing, includes an excitation hammer, a holding arm connected at one end thereof to the excitation hammer to allow the excitation hammer to rotate about the other end thereof, a support post having the other end of the holding arm rotatably coupled to an upper end thereof to support the excitation hammer and the holding arm at a certain height, and an excitation source configured to allow the support post to stand upright on the upper side thereof and which generates a seismic wave when struck by the rotated excitation hammer. The support post is formed at a lower end thereof with a securing section detachably inserted into a groove for the support post formed on the upper side of the excitation source such that the support post, the holding arm, the excitation hammer and the excitation source can be separated from each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.