塔河油田七区油气区带划分与评述

Application Research Evaluation and division of oil gas belt in block 7 of Tahe Oilfield

（中国石化西北分公司工程技术研究院，新疆乌鲁木齐 830011）

（Company,Sinopec,Urumuqi,Xinjiang,830011, China）

塔河油田七区碳酸盐岩储层埋藏深，厚度变化大，储集层非均质性强，孔、缝、洞系统变化大，给储层对比和寻找油气分布规律带来较大困难。通过测井资料的纵、横向对比与追踪，结合地震、钻井及试采资料，依据地层岩性、储层特性、构造及断裂特征，发现现今岩溶地貌特征是古构造运动及同期产生的断裂和古岩溶发育特征的显露，三者有机结合，对该区进行了油气区带划分与评价，从中找出了区带特点和高产油气区带。

The Carbonate Reservoirs in block 7 of Ta-He Oilfield are very deep about 5700M below the surface normally and its thickness have great change.The reservoirs are non-homogeneous medium and holes,fissures and pores in it have big difference.So that it is difficult to Cross-contrast the reservoirs and to find the scattered regularity of Oil-gas.Contrasted and traced vertically and horizontally the formations and reservoirs using well logging information, combined with seismic data, drilling data and measurement well parameters,based on the properties of lithology, reservoir, structure and fractur, we found that the contemporary karst topography is appearance of ancient constructing motion and its contemporaneous fractures as well as the features of ancient karst development.We can divide block 7 of Ta-He Oilfild into some pleces with these three characteristics combined. From those mentioned above we can know : the characters of each plece and high-payment oil-gas plece, which pay a great significant to the development of the oil-gas formations.