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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.
In order to establish evaluation criteria for the reservoir in the Archean buried hill and comprehensively use the data of outcrop, core and oil test to study the development characteristics and main controlling factors of the Archeozoic reservoir in the Jiyang Depression, As a typical fractured reservoir, the main controlling factors of reservoir development include rock mineral composition, buried hill rock structure and tectonic deformation degree.The results show that the brittleness coefficient of mixed two-long granite can reach 0.84 due to the difference of rock mineral composition, , Whereas the brittleness coefficient of the diorite is only 0.64. The rock structure of the buried hill is an important factor for the development of the inner reservoir. The layered or stratified buried hill structure is more likely to form fractured reservoirs, the core is broken and coring The harvest rate is only about 50%, while the block core is relatively complete and the coring rate is usually between 80% and 100% .Due to the degree of structural improvement, the fracture development of the Archeogenetic buried hill in the Liaohe Depression is better than that in the Jiyang Depression, The eastern part of Jiyang Depression is better than the western part.Through the definition and mutual matching of the main controlling factors, a three-terminal evaluation standard of the archetype buried-hill reservoir in the Jiyang depression is established, Divided into 3 categories, of which Class Ⅰ storage performance is the best, followed by Ⅱ, Ⅲ the worst.