Angle dependent surface multiple attenuation for two-component marine bottom sensor data
US6654693B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2001 |
| Grant date | Nov 25, 2003 |
| Priority date | — |
| Expiry date | Oct 22, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/56
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of processing data that uses an angle dependent filter from two-component sensor data allows for attenuation of free surface multiples. Typically, the sensors that are used to produce two-component ocean bottom sensor data are hydrophones and geophones. The method decomposes the recorded dual sensor data into upgoing and downgoing wavefields by combining the recorded pressure at the hydrophone with the vertical particle velocity from the geophone recorded at the ocean floor. Surface multiple attenuation is accomplished by application of an incident angle dependent deconvolution of the downgoing wavefield from the upgoing wavefield. The method uses an angle dependent filter to calibrate the geophone response so that the different coupling of the two instruments and associated noise are taken into account.In a further embodiment, a method of attenuation of multiple reflections in seismic data is provided. The seismic data comprises pressure data and particle velocity data. The method comprises deconvolving the seismic data, and applying a moving average operator to the seismic data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.