Zero hypocentral distance vertical seismic section compressional-shear wave data depth field corridor stacked section processing method
A technology of vertical seismic profile and processing method, applied in seismic signal processing and other directions, can solve the problems of poor comparison certainty, unintuitive application, increasing difficulty, etc., and achieve the effect of high velocity accuracy, reliable identification and calibration, and improved accuracy.
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[0034] The present invention is described in detail below in conjunction with implementing
[0035] This method is a new solution to the above-mentioned problems.
[0036] The method is to make full use of the depth information in the VSP measurement data and the space-time relationship between the wave field, and directly use the results of corridor superposition of the longitudinal and shear wave reflection signals in the depth domain for comparison with the drilling layer data. Identify and calibrate the seismic response in surface seismic, two-dimensional or three-dimensional VSP imaging sections by using the subsequent seismic reflection wave group relationship.
[0037] This method mainly includes the following contents:
[0038] (1) Take advantage of the fact that each receiving point in the VSP spatter data contains accurate depth information, and combine it closely with the depth domain information of the drilling layer.
[0039] (2) Using the direct wave travel dat...
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