Full Wavefield Inversion of Ocean Bottom Seismic Data
AssigneeExxonMobil Technology and Engineering Company
InventorDennis E. Willen
Life of this patent
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Abstract
A method of full wavefield inversion using simultaneous-source, ocean bottom sensor (OBS) data, including: obtaining, with a computer, simultaneous-source OBS data recorded by receivers in a seismic acquisition; generating, with a computer, synthetic OBS seismic data from a model based on reciprocity; blending, with a computer, the synthetic OBS seismic data; differencing, with a computer, the simultaneous-source OBS data recorded by receivers and the synthetic data to form a pseudo-deblended residual; updating the model based on the pseudo-deblended residual; and prospecting for hydrocarbons at a location derived from the updated model.
Claims10
A method of full wavefield inversion using simultaneous-source, ocean bottom sensor (OBS) data, comprising:
- obtaining, with a computer, simultaneous-source OBS data recorded by receivers in a seismic acquisition;
- generating, with a computer, synthetic OBS seismic data from a model based on reciprocity;
- blending, with a computer, said synthetic OBS seismic data;
- differencing, with a computer, said simultaneous-source OBS data recorded by receivers and said synthetic data to form a pseudo-deblended residual;
- updating the model based on the pseudo-deblended residual;
- and
- prospecting for hydrocarbons at a location derived from the updated model.
A method of full wavefield inversion using simultaneous-source, ocean bottom sensor (OBS) data, comprising:
- obtaining, with a computer, simultaneous-source OBS data recorded by receivers in a seismic acquisition;
- obtaining, with a computer at least one of conventional streamer seismic data, conventional OBS seismic data, and simultaneous-source streamer seismic data;
- generating, with a computer, synthetic OBS seismic data from a model based on reciprocity;
- blending, with a computer, said synthetic OBS seismic data corresponding to said obtained simultaneous source OBS seismic data;
- differencing, with a computer, said simultaneous-source OBS data recorded by receivers and said synthetic OBS seismic data to form a pseudo-deblended residual;
- differencing, with a computer, said conventional OBS seismic data or streamer seismic data and corresponding synthetic seismic data to obtain a conventional OBS residual or a streamer residual;
- updating, with a computer, the model based on one or more of the pseudo-deblended residual, the conventional OBS residual, or the streamer residual;
- and
- prospecting for hydrocarbons at a location derived from the updated model.
The method of step 6, wherein the generating synthetic OBS seismic data using reciprocity includes synthesizing source excitation locations in the simultaneous-source OBS data recorded by receivers in the seismic acquisition.
Dependencies are inferred from the claim text.