塔河油田托甫台地区奥陶系一间房组碳酸盐岩储层特征及主控因素

CHARACTERISTICS AND MAJOR CONTROLLING FACTORS OF CARBONATES RESERVOIR IN THE MIDDLE ORDOVICIAN YIJIANFANG FORMATION, TUOFUTAI AREA, TAHE OILFIELD

彭守涛 何治亮 丁勇 张涛 夏东领 汲生珍 云金表

Peng Shoutao He Zhiliang Ding Yong Zhang Tao Xia Dongling Ji Shengzhen Yun Jinbiao

中国石油化工股份有限公司, 石油勘探开发研究院, 北京, 100083 2. 中国石油化工股份有限公司, 西北分公司, 石油勘探开发研究院, 乌鲁木齐, 830011

Exploration & Production Research Institute, SINOPEC, Beijing 100083, China 2. Research Institute of Exploration & Production, Northwest Company of SINOPEC, Urumqi 830011, China

通过对塔河油田托甫台地区30多口钻井录井、测井、试油、地球物理等第一手资料系统分析,结合岩心、薄片观察和地化分析等研究,认为区内奥陶系一间房组储层基质孔隙度较低,溶蚀孔、洞、缝和构造缝是主要的储集空间,储层类型在平面上具有"南北分带、东西分异"的特征。加里东中期是该区岩溶储层形成的关键时期,古地貌、断裂或裂缝作用、高能礁滩体等是控制储层发育的重要因素,表现出明显的层控和断控性。由此预测有利储层位于加里东中期古地貌高部位或岩溶残丘、断裂和裂缝密集带与高能礁滩体的复合部位,主要分布在托甫台中、北部地区。

Based on analysis of 30 wells data of logging,well logging,oil production test,geophysical,and rock core and rock thin-section observation,the results show dissolved pores and/or caves,factures are the main reservoir spaces with low matrix porosity in Middle Ordovician Yijianfang Formation,Tuofutai area of Tahe Oilfield.On the plane the reservoir types have the feature of "north-south zoning distribution,east-west heterogeneity".The karst reservoirs mainly formed in middle Caledonian and were controlled by such factors as paleo-geomorphology,faults or fractures,lithology and facies,etc.,showing distinct features of fault-controlled and strata-bound.Thus it is predicted that the areas of favorable reservoir rocks would be developed in the congruent sites of the high position of Caledonian paleo-geomorphology,concentration area of faults or fractures and high energy reef-flat facies,which are mainly distributed in the middle and northern part of Tuofutai area.

国家重点基础研究发展计划“973计划”项目(2005CB422103)资助

https://doi.org/10.11781/sysydz201002108