CAJ | 학술논문

由于地震勘探目标的复杂性，导致地震采集资料的信噪比降低，在其叠后地震资料中的各种残留噪声将会造成断层和岩性边界的信息模糊，不能满足地震资料精细解释的需求。近年来能够增强断层和岩性边界刻画，同时提高地震资料信噪比的边界保持滤波技术得到很多学者的关注。针对常用的扩散滤波方法在滤波处理时存在的不确定性，从各向异性扩散滤波方程出发，推导出拉普拉斯滤波器模型；利用梯度结构张量技术估计地震同向轴方向和断层位置，给出具有明确空间滤波结构的各向异性拉普拉斯滤波器。将该技术用于三维地震资料处理，不仅可以增强断层成像的清晰度，同时也能提高薄层和微细沉积事件的成像精度，有利于进一步做好储层精细评价。
유우지진감탐목표적복잡성，도치지진채집자료적신조비강저，재기첩후지진자료중적각충잔류조성장회조성단층화암성변계적신식모호，불능만족지진자료정세해석적수구。근년래능구증강단층화암성변계각화，동시제고지진자료신조비적변계보지려파기술득도흔다학자적관주。침대상용적확산려파방법재려파처리시존재적불학정성，종각향이성확산려파방정출발，추도출랍보랍사려파기모형；이용제도결구장량기술고계지진동향축방향화단층위치，급출구유명학공간려파결구적각향이성랍보랍사려파기。장해기술용우삼유지진자료처리，불부가이증강단층성상적청석도，동시야능제고박층화미세침적사건적성상정도，유리우진일보주호저층정세평개。
Since the complexity of seismic prospecting target, has brought down S/N ratio of acquired seismic data. Various residual noises in poststack seismic data can make ambiguous information of fault and lithologic boundary, thus cannot meet requirements of seismic data fine interpretation. In recent years, many researchers have paid close attention to improve fault and lithologic boundary de?piction, together enhanced seismic data S/N ratio edge retaining filtering technology. In allusion to uncertainty in commonly used diffu?sion filtering, from anisotropic diffusion filtering equation can deduce Laplace filter model. Using gradient structure tensor technology estimates seismic phase axis direction and fault position, provides anisotropic Laplace filter with specific spatial filtering structure. Us?ing the technology in 3D seismic data processing, can not only improve fault imaging definition, but also thin layer and very small sedi?mentary events imaging definition, in favor of further reservoir fine assessment.