碳酸盐岩岩溶型储层综合预测评价技术的应用及效果分析

The application of multiple information for predictive of carbonate karst reservoir and effect analysis

中国石油勘探开发研究院西北分院,甘肃兰州 730020

Northwest Research Institute of Petroleum Exploration and Development, GNPC, Lanzhou 730020, China

碳酸盐岩岩溶型储集层具有很强的非均质性,给储层预测造成了一定的困难,利用某种单一技术很难对其进行准确的预测。针对塔里木盆地桑塔木地区碳酸盐岩岩溶型储集层,综合应用地震属性参数分析、古地貌恢复、应变量分析裂缝预测、井约束条件下的全三维波阻抗反演以及多参数融合储层评价等技术,提取了对碳酸盐岩岩溶型储集层反映敏感的参数,预测了裂缝的发育密度,恢复了古地貌,划分了各类储层及评价指数。在此基础上,设计了多个钻探井位,均钻遇到优质岩溶型储集层,并获得了高产工业油流。

Carbonate karst reservoir is very heterogeneity, which brings us many difficulties to predict. The paper uses multiple information to predict it, including the seismic attributes, restoration of the palaeo-geo-morphology, fault and fracture identify by strain a-nalysis, the 3-D impedance inversion with well restriction, integrated reservoir evaluation using all information and etc. We have got a good result and also proved by drilling. Other areas with similar characteristics may benefit from these results.