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- W2971301481 abstract "Summary Continuous wavelet transform (CWT) as a seismic time-frequency analysis technique with multi-resolution characteristics has been widely used in seismic interpretation, such as hydrocarbon detection. With the increased degree of oil and gas exploration, exploration targets are gradually shifting to the complex oil and gas reservoirs such as lithologic and structural-lithologic reservoirs. In this case, CWT method has become increasingly unable to meet the accuracy and resolution requirements of the hydrocarbon detection due to Heisenberg uncertainty principle. Therefore, we study an improved CWT based on reassignment method. The basic idea of this method is to reassign the time-frequency energy of each point in a CWT spectrum to a new coordinate nearer to the actual time-frequency location. Via this process, the reassigned spectrum is much more concentrated than the CWT spectrum and becomes a sparse representation of the signal. The synthetic data and field data processing results show that the high-resolution spectrum decomposition method based on the reassigned continuous wavelet transform (RCWT) can more accurately depict the time-frequency characteristics of the signal, and can well meet the accuracy and resolution requirements of hydrocarbon detection of complex structural-lithologic reservoir." @default.
- W2971301481 created "2019-09-05" @default.
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- W2971301481 date "2019-01-01" @default.
- W2971301481 modified "2023-09-26" @default.
- W2971301481 title "Reassigned Continuous Wavelet Transform and its Application in Hydrocarbon Detection of Complex Structural-Lithologic Reservoir" @default.
- W2971301481 doi "https://doi.org/10.3997/2214-4609.201901300" @default.
- W2971301481 hasPublicationYear "2019" @default.
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