塔河油田碳酸盐岩储层类型测井分析

Analysis of carbonate reservoir types by logging data in Tahe oilfield

中国石化西北分公司勘探开发研究院,新疆乌鲁木齐 830011

Geophysical Well Logging, Engineering and Technique Research Institute. Northwest Oilfield Compa- ny, SINOPEC, Urumqi 830011, China

塔河油田奥陶系碳酸盐岩储层非均质性和各向异性强.储集层类型复杂。为此.以成像测井资料为主.结合常规测井资料、储层综合参数分析和岩心分析资料对碳酸盐岩储集层空间类型进行了分析总结.划分了5种油气储集类型,即大洞穴及洞穴充填型、单产状裂缝溶蚀扩大小溶洞型、溶蚀裂缝型、溶蚀孔洞型和溶蚀裂缝-孔隙型等.基本上与地质上按成因划分的储层类型相吻合。在此基础上总结了一套识别和划分储层类型的方法. 实测数据证明.此方法对确定酸压、测试井段效果很好。

Ordovician carbonate reservoir is strong anisotropic and very complicate in Tahe Oilfield. Combining imaging logging data with conventional logging data, comprehensive reservoir parameters and core data, the space types in carbonate reservoir are summarized. Five reservoir types are classified including huge cave and cave-filling, small solution hole from single orientation fracture, solution fracture, solution cave and solution fracture-pore type, which are basically coincident with the geological genetic classification. At the same time, a set of method to identify and classify reservoir types is summarized, it has good applied result in determining the intervals of acid fracturing and testing.