太古界潜山内幕储层发育主控因素分析——以鲁西-济阳地区为例  

Main controlling factors of Archaeozoic inner buried hill reservoir:with Luxi and Jiyang area as an example

作　　者：张鹏飞[1] 曹忠祥[2] 刘惠民[1] 高永进[1] 田美荣[1] 马士坤[1] 

机构地区：[1]中国石化胜利油田分公司地质科学研究院,山东东营257015 [2]中国石化胜利油田分公司勘探项目管理部,山东东营257001

出　　处：《中国矿业大学学报》2016年第1期96-104,共9页Journal of China University of Mining & Technology

基　　金：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)

摘　　要：为了建立太古界潜山内幕储层评价标准,综合运用露头、岩心及试油等资料,对济阳坳陷太古界内幕储层的发育特征及主控因素进行了研究,认为太古界内幕储层为典型的裂缝性储层,储层发育主控因素包括岩石矿物组成、潜山岩石构造与构造变形程度等3项.结果表明：受岩石矿物组成差异控制,混合二长花岗岩脆性系数可达0.84,而英云闪长岩,脆性系数仅为0.64.潜山岩石构造为内幕储层发育的重要影响因素,层状或似层状潜山构造更易于形成裂缝性储层,岩心破碎,取心收获率仅为50%左右,而块状构造岩心较完整,取心收获率通常在80%~100%.受构造改造程度控制,辽河坳陷太古界潜山裂缝发育要好于济阳坳陷,济阳坳陷内部东部要好于西部.通过对主控因素的级别定义和相互匹配,建立了济阳坳陷太古界潜山内幕储层的三端元评价标准,将太古界潜山内幕储层划分为3类,其中Ⅰ类储集性能最好,Ⅱ类次之,Ⅲ类最差.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.

关 键 词：储层 太古界 内幕 济阳 鲁西 

分 类 号：TE121.2[石油与天然气工程—油气勘探]