Method for determining the extent of subsurface reaction involving acoustic signals
US4390973A · kind A · utility
173Cited by
11References
8Claims
0Family size
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Key dates
| Filing date | Apr 13, 1981 |
| Grant date | Jun 28, 1983 |
| Priority date | — |
| Expiry date | Apr 13, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/366
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method determines the extent of subsurface reactions in which random acoustic signals are radiated from a whole area covered by the reaction or from a boundary region, hereafter termed reaction front, between largely undisturbed rocks and those already covered by the reaction. The signals are recorded by at least two receivers positioned at different locations outside the reaction area. The recorded signals are cross-correlated as a function of a time shift between the recorded signals so that at least one surface confining the reaction area is determined from the cross-correlation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.