塔里木盆地哈拉哈塘地区三维叠前深度偏移与储层定量雕刻
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
塔里木盆地哈拉哈塘奥陶系碳酸盐岩缝洞型储层十分发育,裂缝溶洞的展布主要受断裂、古水系控制,油层厚度小,水体活跃。缝洞储层具有大小规模不同、空间分布形态不规则、充填性质各异的缝洞组合特征。如何准确刻画碳酸盐岩缝洞储层空间位置、缝洞储层容积、油气水分布特征,已成为碳酸盐岩油藏勘探开发井位部署的主要难点之一。在高品质的高密度全方位采集的地震资料的保障下,提出了叠前深度偏移、正反演结合定量雕刻、叠前地震各向异性分析和叠前弹性参数反演预测方法。实际地震资料的应用表明,叠前深度偏移可以准确刻画缝洞体空间位置,叠前各向异性分析能有效预测裂缝发育强度及方位,结合井资料叠前弹性反演能有效预测缝洞储层空间形态和储层的含油气性。多种手段的应用,有效地解决了碳酸盐岩缝洞油藏研究的难题,为哈拉哈塘碳酸盐岩油藏的勘探开发井位部署提供了有力支持。
Ordovician carbonate fracture-vuggy reservoirs are well developed in Halahatang area. The crack-cave distribution is mainly affected by faults and paleo-water systems. The oil layer is thin, and water bodies are active. The fracture-vuggy reservoirs feature in different scale, irregular spatial distribution, and various filling properties. It is difficult to accurately describe the spatial location of carbonate fracture-vuggy reservoir, the volume of fracture-vuggy reservoir, and oil-gas-water distribution in carbonate reservoir exploration and development. With the support of high-density and wide-azimuth seismic acquisition, this paper puts forward such predicting methods as the prestack depth migration, the quantitative characterization combining forward and inversion, the prestack anisotropy analysis, and the prestack elastic inversion. Field application of practical seismic data shows that prestack depth migration could accurately characterize the spatial location of fractured body; prestack anisotropy analysis could effectively predict fracture density and direction; the prestack elastic inversion combined with well data could predict the spatial form of fractured reservoir and the oil and gas condition of the reservoir. The application of various means effectively solves the problems in study on carbonate fracture-vuggy reservoirs, and provides powerful supports for well deployment in the carbonate reservoir exploration and development in Halahatang area.
引文
[1]陈清华,刘池阳,王书香,等.碳酸盐岩缝洞系统研究现状与展望[J].石油与天然气地质,2002,23(2):196~202.
    [2]马在田.地震成像技术(有限差分法偏移)[M].北京:石油工业出版社,1989.
    [3]撒利明.基于信息融合理论和波动方程的地震地质统计学反演[J].成都理工大学学报,2003,30(1):60~63.
    [4]渥.伊尔马兹著.地震资料分析[M].刘怀山,等译.北京:石油工业出版社,2006.
    [5]陆基孟.地震勘探原理[M].北京:石油工业出版社,1991.
    [6]袁刚,蒋波,曾华会.各向异性叠前时间偏移在塔里木碳酸盐岩资料处理中的应用[J].大庆石油学院学报,2010,34(3):23~29.
    [7]王梅生,胡永贵,王秋成,等.高密度地震数据采集中参数选取方法探讨[J].勘探地球物理进展,2009,32(6):404~409.

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心