Baseplate dampening pad
US8662243B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2011 |
| Grant date | Mar 4, 2014 |
| Priority date | — |
| Expiry date | Jul 27, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/145
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a sweep-type vibratory seismic source where a baseplate is put to the ground and a series of impulses are applied through the baseplate into the ground and where the baseplate may periodically de-couple from the ground during the delivery of the impulses. A de-coupling baseplate tends to undertake a very high frequency flexing while high frequency energy is being delivered to the ground. The high frequency flexing may be picked up by the vibrator control system and interpreted as an unintended signal being delivered into the ground. While there are already issues getting high frequency data in the return wave field, allowing the vibrator electronics to alter the actual signal in a manner intended to squelch the high pitched ringing of the baseplate is apt to reduce the high frequency data in the data record. One solution for reducing the de-coupling and the ringing of the baseplate is a dampening pad positioned between the baseplate and the ground.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.