Method of determining weathering corrections in seismic record processing
US4069471A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 12, 1976 |
| Grant date | Jan 17, 1978 |
| Priority date | — |
| Expiry date | Mar 12, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/53
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The method of determining the magnitude of the differential static correction between two selected adjacent receiver points D, E, in a linear seismic array, that involves the steps of: recording a first multi-trace record responsive to a first seismic wave generated at a first source point C on one side of D, E at any distance; recording a second corresponding multi-trace record responsive to a second seismic wave at a second source point F on the opposite side of D, E at any distance; correlating a first trace CE with a second trace CD of the first record to obtain a first time difference R; correlating the corresponding first trace FD with a second trace FE of the second record to get a second time difference S; and determining the value of K = (R - S)/2, where K is a value of the static correction equal to the difference in the travel time through the weathered layer at D and E. The process can be repeated for other positions of C, F to obtain other independent values of K. The various values of K can be averaged to provide an improved value of differential static correction at receiver points D, E. The method is applicable also to determining the differential static correction …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.