塔河油田碳酸盐岩缝洞空间位置预测方法研究  

Study on Spatial Location Prediction Method of Fractured- vuggy Carbonate Reservoir in Tahe Oilfield

作　　者：王震 文欢[2] 胡文革 Wang Zhen;Wen Huan;Hu Wenge(College of Geophysics and Petroleum Resources,Yangze University,Wuhan Hubei 430100,China;Research Institute of Exploration&Development,Northwest Oilfield Company,of Sinopec Urumqi Xinjiang 830011,China)

机构地区：[1]长江大学地球物理与石油资源学院,湖北武汉430100 [2]中国石油化工股份有限公司西北油田分公司勘探开发研究院,新疆乌鲁木齐830011

出　　处：《工程地球物理学报》2019年第4期433-438,共6页Chinese Journal of Engineering Geophysics

基　　金：国家科技重大专项(编号:2016ZX05053);中国石化重大专项(编号:ZDP17001)

摘　　要：塔河油田碳酸盐岩缝洞型储层的埋深均在5 300 m以上,目前钻井揭示洞穴高度大部分在0~10 m,洞穴宽度根据现代岩溶观察大部分小于100 m,高度及宽度均小于目前地震资料的分辨率。在地震资料上缝洞储集体最为典型的反射特征是“串珠”状反射,其地震异常范围远远大于实际缝洞大小,因此利用地震反射特征准确预测缝洞体的展布形态、大小及空间位置具有较大的困难。针对常规地震属性预测缝洞储集体空间发育位置精度低的缺点,开展缝洞储集体空间位置综合预测技术研究,提出了应用叠前深度偏移技术、分频技术及阻抗反演技术综合预测缝洞空间位置的“三定”技术。塔河十区西碳酸盐岩缝洞空间位置预测效果表明,“三定”技术提高了新井的中靶率,有效指导了措施潜力论证,改善了开发效果。The buried depth of the carbonate fractured-vuggy reservoir in Tahe oilfield is above 5 300 m.At present,the height of the cave is mostly in 0~10 m according to the drilling revelation,and the width of the cave is less than 100 m according to the modern karst observation.Besides,the height and width of the cave are less than the limit values of the current seismic data resolution.In seismic data,the most typical reflection feature of the fractured-cavity reservoir is bead-like seismic reflection.Its seismic anomaly range is much larger than the size of the real fracture and cavern.Therefore,it is difficult to predict the distribution pattern,size and space position of the fractured-vuggy bodies by seismic reflection characteristics.As for the defect of low accuracy on predicting the position of fracture-vuggy reservoir has low accuracy by using conventional seismic attributes,a comprehensive prediction technology of prestack depth migration,frequency division and impedence for the space position of fractured-vuggy reservoir is carried out in this paper,and the tri-determination technique for location prediction of fractured-vuggy bodies is proposed.The result from predicting the spatial location of fractured-vuggy bodies in the west of Tahe 10 districts indicates that the tri-determination technique has improved the target rate of new wells,effectively guiding the measures demonstration,and promoting the development effects.

关 键 词：碳酸盐岩 缝洞型油藏 波阻抗反演 叠前深度偏移 分频 

分 类 号：P631.4[天文地球—地质矿产勘探]