Method and device for measuring vibrational stresses and velocities of waves propagated within formations surrounding a wellbore
US4775960A · kind A · utility
3Cited by
8References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1986 |
| Grant date | Oct 4, 1988 |
| Priority date | — |
| Expiry date | Dec 17, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01H15/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for measuring vibrational stresses and velocities of waves propagated within formations surrounding a wellbore essentially consists in simultaneously measuring the vibrational stress and vibrational velocity produced by propagation of the vibration within the medium, then in establishing a ratio of magnitudes relating to the vibrational stress and velocity in respect of one and the same measuring point. The method and device provided by the invention also find applications in the separation of different types of secondary waves generated during propagation of a primary wave in a medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.