地震属性分析在彩南油田动态分析中的应用
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摘要
地震信息包含地层界面信息、地层物性信息.通过对地震资料分析处理,提取各种属性,结合油田开发动态分析储层物性在空间上的分布.根据彩南油田西山窑组的实际动态数据,分析油田的递减与含水上升规律,针对不同阶段的开发特点,分析影响制约油藏开发的主要地质因素及开发因素,并利用地震信息资料认识储层的非均质性与剩余油分布规律.通过动态信息和地震属性的一致性分析,对地震属性进行标定、处理,从而获得更能代表流体意义的属性特征.在此基础上对储层连通性进行分析,提出了在地震属性约束下的注采优化方案,通过现场试验取得较好效果.
Seismic data not only are able to represent the formation structure, but also carry the information of formation petrophysical properties. Based on seismic data and its attributes, and further combing with dynamic information, reservoir properties and its dynamic characteristics can be inferred. This study is aimed to find production improvement potentials based on the consistency analysis of its geological and production control factors by combining the seismic spatial information. The seismic attributes are calibrated and processed based on the consistency analysis between the seismic attributes and production data. In this way, the processed seismic attributes can represent the dynamic characteristics. Furthermore, the connectivity is computed based on production history and seismic attributes. The injection rate is optimized by re-allocation through this connectivity. The injection pattern is further validated by production data detail analysis and reservoir simulation.
Seismic data not only are able to represent the formation structure, but also carry the information of formation petrophysical properties. Based on seismic data and its attributes, and further combing with dynamic information, reservoir properties and its dynamic characteristics can be inferred. This study is aimed to find production improvement potentials based on the consistency analysis of its geological and production control factors by combining the seismic spatial information. The seismic attributes are calibrated and processed based on the consistency analysis between the seismic attributes and production data. In this way, the processed seismic attributes can represent the dynamic characteristics. Furthermore, the connectivity is computed based on production history and seismic attributes. The injection rate is optimized by re-allocation through this connectivity. The injection pattern is further validated by production data detail analysis and reservoir simulation.
引文
[1]Lumley D E.Assessing the technical risk of a4D seismic project[J].The leading Edge,1997,16(9):1287-1291.
[2]凌云,高军,张汝杰,等.随时间推移(TL)地震勘探处理方法研究[J].石油地球物理勘探,2001,36(2):173-179.
[3]凌云,黄旭日,高军,等.非可重复性随时间推移地震勘探实例研究[J].石油物探,2007,46(3):231-248.
[2]凌云,高军,张汝杰,等.随时间推移(TL)地震勘探处理方法研究[J].石油地球物理勘探,2001,36(2):173-179.
[3]凌云,黄旭日,高军,等.非可重复性随时间推移地震勘探实例研究[J].石油物探,2007,46(3):231-248.
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