曲流河沉积微相的三维地震描述
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摘要
馆上段曲流河沉积的砂岩是良好的储层,困扰石油勘探开发的难点是砂岩空间分布不均匀。如何利用三维地震描述方法寻找物性好的河床微相是提高该类储层勘探开发效益的关键。研究表明,水平切片、三维立体显示和分频扫描技术可快速识别河床与河漫微相的宏观目标区;振幅、频率和波形参数组合分析方法可以有效地消除地震方法划分曲流河沉积微相的多解性,给出储层精细描述结果。该方法描述的曲流河沉积微相与测井资料吻合较好。
The sand sedimentated at the upper Guantao group is a better reservoir, but the difficulty for exploration and development is that the sand rock distributes heterogeneously in space. How to find the river bed with better physical property is an important way to improve the benefit of exploration and development. The result shows that the macro-target, consist of river bed and over flow micro-facies, can be quickly determined by level slice, 3D visualization displaying and frequency division scanning; the multiple solutions can be resolved effectively with the amplitude, frequency and wave form parameters, the result from fine reservoir description is provided in the end. The sedimentary micro-facies of the meander river result acquired by seismic method are better consistent with the logging data.
The sand sedimentated at the upper Guantao group is a better reservoir, but the difficulty for exploration and development is that the sand rock distributes heterogeneously in space. How to find the river bed with better physical property is an important way to improve the benefit of exploration and development. The result shows that the macro-target, consist of river bed and over flow micro-facies, can be quickly determined by level slice, 3D visualization displaying and frequency division scanning; the multiple solutions can be resolved effectively with the amplitude, frequency and wave form parameters, the result from fine reservoir description is provided in the end. The sedimentary micro-facies of the meander river result acquired by seismic method are better consistent with the logging data.
引文
[1]陈德坡,柳世成.孤东油田七区西曲流河沉积微相定量识别技术.断块油气田,2003,10(2):16￣20
[2]张春生,刘忠保,施东.高弯曲与低弯曲河流比较沉积学研究.沉积学报,2000,18(2):227￣233
[3]于建国,林春明,王金铎等.曲流河沉积亚相的地震识别方法.石油地球物理勘探,2003,38(5):547￣551
[4]张善文,才巨宏,吴洪波.埕岛地区馆上段储层地震岩性学研究.石油地球物理勘探,1994,29(增2):123￣128
[5]张延章,廖前进,范军侠等.地震微相分析技术在大港滩海探区的应用.石油勘探与开发,2003,30(4):58￣60
[6]杨凤丽,张善文,才巨宏等.曲流河砂体的沉积相、测井相、地震相研究及预测.石油地球物理勘探,1999,34(2):171￣174
[2]张春生,刘忠保,施东.高弯曲与低弯曲河流比较沉积学研究.沉积学报,2000,18(2):227￣233
[3]于建国,林春明,王金铎等.曲流河沉积亚相的地震识别方法.石油地球物理勘探,2003,38(5):547￣551
[4]张善文,才巨宏,吴洪波.埕岛地区馆上段储层地震岩性学研究.石油地球物理勘探,1994,29(增2):123￣128
[5]张延章,廖前进,范军侠等.地震微相分析技术在大港滩海探区的应用.石油勘探与开发,2003,30(4):58￣60
[6]杨凤丽,张善文,才巨宏等.曲流河砂体的沉积相、测井相、地震相研究及预测.石油地球物理勘探,1999,34(2):171￣174
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