Translations:Surface-consistent deconvolution/4/en

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The surface-consistent deconvolution model is based on the concept that a seismic wavelet can be broken down into its four components: its source, receiver, offset, and CMP components. For surface-consistent deconvolution, the following convolutional model is used: The recorded seismic signal can be considered to be the convolution of the wavelet with the response of the earth. The earth’s response represents the reflectivity function as well as some undesirable effects, such as reverberation, absorption, and ghosting. The wavelet can be made up of any or all of its four components: source wavelet, the wavelet representing the response of the instruments and geophones, a wavelet representing the offset, and a wavelet representing the CMP position. The objective of surface-consistent deconvolution is to estimate these four component wavelets and then design and apply inverse filters to remove them. For land data, all four components normally are used in the decomposition, but usually only the shot and receiver portions are applied. The receivers are in motion in marine acquisition, so the common receiver grouping is not so well suited for marine data. In areas with highly variable bottom conditions, however, the common receiver component is useful.