【摘要】 地震资料的相对保幅性处理是进行岩性油气藏勘探的基础。目前,在地震数据保幅性处理中,针对振幅补偿类技术的相对保幅性进行系统评价方面表现不足。本文以球面扩散补偿、地表一致性振幅补偿方法为例给出了地震补偿类方法的保幅性理论分析思路以及评价标准。首先,从理论上分析了两种方法的相对保幅性;其次,对三维正演数据进行地震振幅补偿处理;最后,将模型正演数据与对其进行振幅补偿后的数据作定量对比,从而定量分析两种补偿方法对振幅相对关系的影响。理论分析及数值试验结果表明:球面扩散补偿、地表一致性补偿方法保幅性较好。更多还原

【Abstract】 Relative amplitude-preserved processing of seismic data is the basis of lithologic reservoir exploration. However,the systematic theoretical and experimental analysis of relative amplitude preserved-processing for seismic compensation techniques remains very insufficient. In this paper,taking spherical spreading compensation and surface consistent amplitude compensation technique as an example,the authors present the theoretical analysis method and evaluation standards. At first,the relative amplitude-preserved properties of the two methods are analyzed theoretically,then the seismic amplitude compensation methods are applied on the 3D numerical model,finally the compensated results are compared with the original numerical model,and thus the effects on the relative amplitudes of the two compensation methods can be quantitatively analyzed. Theoretical analysis and numerical results indicate that spherical spreading compensation and surface consistent compensation methods do relatively well for amplitude preservation.更多还原