测井约束地震反演技术分析与应用
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摘要
以薄层砂体的识别为目的所进行的地震反演,通常由于地震频带宽度的限制,采用普通地震资料直接进行反演的结果,其精度和分辨率都不能满足油田开发对簿砂层识别的要求。然而,采用测井资料丰富的高频信息和完整的低频成分补充地震资料有限带宽的不足,综合地质认识等信息作为约束条件,可以得到高精度的波阻抗资料。根据XX地区X56区块实际资料情况和地质特点,应用测井约束反演技术对其进行了储层反演,反演结果与钻井情况符合良好,为该油藏开发方案部署和油田生产提供依据。
The seismic inversion aimed to recognize the thin layer bandwidth was restricted by the limited seism,accuracy and resolution of the results that carried on by direct seismic inversion was low,so it could not meet the requirements of oilfield development.However,applying log data-rich high-frequency information and integrated low frequency components of seismic data can retrieve the defacts of limited seismic bandwidth,the high accurat wave impedance data can be obtained by comprehensive geologic knowledge.According to the real material and geological feature of Block X56 in the north of XX oilfield,the technology of logging-constrained seismic inversion is applied to predict the reservoir distribution pattern.The predicted result is identical with the real drilling,and it provides a basis for deploying development project and production plant for the oilfield.
The seismic inversion aimed to recognize the thin layer bandwidth was restricted by the limited seism,accuracy and resolution of the results that carried on by direct seismic inversion was low,so it could not meet the requirements of oilfield development.However,applying log data-rich high-frequency information and integrated low frequency components of seismic data can retrieve the defacts of limited seismic bandwidth,the high accurat wave impedance data can be obtained by comprehensive geologic knowledge.According to the real material and geological feature of Block X56 in the north of XX oilfield,the technology of logging-constrained seismic inversion is applied to predict the reservoir distribution pattern.The predicted result is identical with the real drilling,and it provides a basis for deploying development project and production plant for the oilfield.
引文
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[3]张辉,林春明,崔颖凯.三角洲沉积微相特征及其地震识别方法[J].石油物探,2005,44(6):557～562.
[4]陈守田,孟宪禄.薄互层储层预测方法[J].石油物探,2004,43(1):33～36.
[5]姜素华,王永诗,林红梅,等.测井约束反演技术在不同类型沉积体系中的应用[J].石油物探,2004,43(6):587～590.
[6]李庆忠.走向精确勘探的道路[M].北京:石油工业出版社,1993.110～154.
[7]唐湘蓉,谭仲平.塔河4区碳酸盐岩测井约束反演预测[J].断块油气田,2005,12(3):13～15.
[8]李锋,罗涛.高分辨率测井约束地震反演技术在本布图地区的应用[J].石油天然气学报(江汉石油学院学报),2006,28(3):255～256.
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[11]陈钢花,王永刚.Faust公式在声波曲线重构中的应用[J].勘探地球物理进展,2005,28(2):125～128.
[12]刘淑华,张宗和.储层特征曲线重构反演技术——以冀东油田南堡凹陷为例[J].勘探地球物理进展,2008,31(1):53～55.
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