Prestack separating method for seismic wave
US10712461B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2016 |
| Grant date | Jul 14, 2020 |
| Priority date | — |
| Expiry date | Mar 21, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/512
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present disclosure provides a prestack separating method for a seismic wave, including: receiving P-wave, S1-wave and S2-wave of the seismic wave, wherein the P-wave, S1-wave and S2-wave are reflected from different points; projecting the P-wave, S1-wave and S2-wave into a Z-R-T coordinate system, so as to generate a projection matrix, wherein Z is a vertical component, R is a component of a source-to-receiver azimuth and T is a component orthogonal to the R component; forming vectors of the P-wave, S1-wave and S2-wave as a composite vector; transforming the composite vector to an anisotropic wave vector matrix according to base vectors on the vector directions of the P-wave, S1-wave and S2-wave; and performing a rotation transformation of an affine coordinate system on the anisotropic wave vector matrix to generate a wave separation matrix, thereby solving a problem of error prediction result of fracture parameters caused by the “mode leakage” phenomenon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.