【摘要】 针对委内瑞拉奥里诺科重油带J区块新老二维地震资料存在的问题,应用精细匹配处理方法,即以精细频率匹配和精细振幅匹配和相位校正为主要手段,结合时间偏移处理以及去噪、混波处理等手段,普遍突出了有效反射信息,提高了不同年度地震剖面之间的闭合精度,大大提高了构造解释的准确性.虽然地震资料很少,但仍解释出了J区块的三层构造图.构造解释结果表明,J区块地层总体是一个北倾单斜,其上发育一些北东和近东西向的断层,油藏类型以岩性油藏为主,断层对油藏主要起复杂化作用.J区块这一构造特征与其所处的构造背景、基底形态和构造应力作用有关.更多还原

【Abstract】 In order to solve problems that exist between the new and old 2D data acquired in various years from block J of the Orinoco heavy oil belt,a technique of subtle matching processing is developed.During the matching processing,subtle frequency compensation,amplitude compensation and phase correction are major methods,and several tools such as time migration,noise attenuation and trace mix.are combined.Thus effective signals are widely emphasized,and closure accuracy is increased among seismic sections acquired in various years,and the accuracy of the structure interpretation has been improved.The structures of the three layers have been interpreted although seismic data in limited.The interpretation shows that the block J is generally a monoclinic dipping to the north,on which the faults have the orientations NE and nearly EW.The types of the reservoir are mainly lithologic reservoir,and the faults make the reservoir complicated.The structural pattern of block J is related to its tectonic background,basement topography and tectonic stress.更多还原