Bp Corporation North America Inc.

Ganyuan Xia

Joseph Anthony Dellinger

Leon A Thomsen

Daniel Johnson

Norman C Allegar

Petr Jilek

Gerard Joseph Beaudoin

There is provided herein a system and method of seismic exploration that produces improved locations and timings for ocean bottom seismometers. The instant method utilizes linearized inversion in conjunction with a conventionally accurate clock to provide both time and positioning for each OBS unit with high accuracy as compared with the prior art approach. Inversion is one mathematical tool that effectively performs the requisite triangulation. Furthermore, the clock drift can be accounted for in the inversion scheme. The inversion not only determines the OBS position and shot timing errors, but also estimates the accuracy of the position and timing determination.

System and method for accurate determination of ocean bottom seismometer positioning and timing

There is provided herein a system and method of acquiring, processing, and imaging transient Controlled Source ElectroMagnetic (t-CSEM) data in ways that are similar to those used for seismic data. In particular, the instant invention exploits the time-distance characteristics of t-CSEM data to permit the design and execution of t-CSEM surveys for optimal subsequent processing and imaging. The instant invention illustrates how to correct t-CSEM data traces for attenuation and dispersion, so that their characteristics are more like those of seismic data and can be processed using algorithms familiar to the seismic processor. The resulting t-CSEM images, particularly if combined with corresponding seismic images, may be used to infer the location of hydrocarbon reservoirs.

System and method for using time-distance characteristics in acquisition, processing, and imaging of T-CSEM data

System and method for using time-distance characteristics in acquisition, processing, and imaging of t-CSEM data

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Katy, TX, United States of America

Ganyuan Xia