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《Journal of China University of Mining & Technology》 2016-01
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Main controlling factors of Archaeozoic inner buried hill reservoir:with Luxi and Jiyang area as an example

ZHANG Pengfei;CAO Zhongxiang;LIU Huimin;GAO Yongjin;TIAN Meirong;Ma Shikun;Geological Science Research Institute of Shengli Oilfield,SINOPEC;Exploration Item Management Department of Shengli Oilfield,SINOPEC;  
To establish the reservoir evaluation criteria,development characteristics and main controlling factors of Archaeozoic inner reservoir were studied based on the integrated analysis of outcrop,cores and well testing data.It is believed that Archaeozoic inner reservoir is typical fractured reservoir.And it is found that the main controlling factors of Archaeozoic inner reservoir include mineral composition,rock structure of buried hill and deformation degree of the structure.The study results show that controlled by the difference of mineral composition,the brittleness index of mixed monzonitic granite is 0.84,but that of tonalite is just 0.64.The rock structure of buried hill is a significant factor;the layered or stratiform-like buried hill is easier to form fractured reservoirs,as its core is crushed and the core recovery rate is only about 50%;whereas,the core of massive buried hill is comparatively complete,with usual core recovery rate of 80%to 100%.Controlled by structural reformation,fracture development in Archaeozoic buried hill of Liaohe depression is better than that in Jiyang depression,and thatin east Jiyang depression is better than in the west.Based on the grade definition and mutual matching of three controlling factors,evaluation criteria of Archaeozoic inner reservoir in Jiyang depression was established.Archaeozoic buried hill inner reservoir was subdivided into three classes:classⅠis the most favorable reservoir,classⅡtakes second place,and class Ⅲhas the worst reservoir property.
【Fund】: 国家科技重大专项(2011ZX05006);; 中国石化胜利油田分公司科技攻关项目(YKB1214)
【CateGory Index】: P618.13
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