Abstract：The variable-depth streamer acquisition technology suppresses ghost effectively and obtains wide-band data based on notch diversity.Sea surface reflection coefficient and the time delay of ghost wave are the two most important parameters affecting ghost suppression effect,and cannot be obtained directly.In this paper,the mirrorred record generation formula and the joint deconvolution deghosting formula with these two parameters were derived.Based on non-Gaussian maximization,taken the negative entropy as the non-Gaussian measure,the sliding spatio-temporal data window was used to solve the ghost wave parameter variation problem.The optimized sea surface reflection coefficient and the time delay of ghost wave were obtained,and then the ghost was suppressed by joint deconvolution.Model test and the application in real data processing demonstrated that the method suppressed the ghost in variable-depth streamer data effectively,widened frequency band and improved seismic resolution.
封强, 韩立国, 杨帆. 非高斯性最大化变深度缆鬼波压制方法[J]. 石油地球物理勘探, 2020, 55(1): 57-63.
FENG Qiang, HAN Liguo, YANG Fan. A deghosting method for variable-depth streamer data based on non-Gaussian maximization. Oil Geophysical Prospecting, 2020, 55(1): 57-63.
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