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利用野外露头、岩心分析、测井、录井等多种资料,通过变质岩的岩石学特征、不同岩石的测井响应特征、储集空间特征、储集空间的控制因素等方面对辽河盆地太古界变质岩储层特征进行了综合研究。研究表明,辽河盆地太古界变质岩的主要岩石类型有片岩类、片麻岩类、角闪质岩类、混合岩类及混合花岗岩类,矿物组合以硅酸盐矿物组合为主,其中能够对油气起储集作用的是暗色矿物含量低、性脆的岩石;另外在进行变质岩岩石划分时须以矿物组成为理论基础,根据不同岩石在3700测井系列的电性响应特征进行岩石类型的识别;最后指出辽河盆地变质岩的主要储集空间有粒间孔隙、晶间孔隙、溶孔及裂缝,岩石类型是决定储层发育程度的内在因素,构造作用、溶蚀作用和充填作用等成岩后生作用是影响储层发育的外部条件。
Using outcrops, core analysis, well logging and mud logging data, the paper analyzes the petrological characteristics of metamorphic rocks, the logging response characteristics of different rocks, the characteristics of reservoir space and the controlling factors of reservoir space, Boundary metamorphic reservoir characteristics of a comprehensive study. The study shows that the main rocks of the Archean metamorphic rocks in the Liaohe Basin include schist, gneiss, amphibolite, mixed rocks and mixed granites. The mineral assemblages are mainly composed of silicate mineral assemblages, In addition, the rocks with low dark mineral content and brittleness should be the reservoirs for oil and gas accumulation. In addition, the delineation of metamorphic rocks must be based on the mineral composition theory. Based on the electrical response characteristics of different rocks in the 3700 series, Finally, it is pointed out that the main reservoir space of metamorphic rocks in Liaohe Basin is intergranular, intergranular, dissolved pores and fractures. The rock type is the intrinsic factor that determines the degree of reservoir development, tectonism, dissolution and filling Function is the external conditions that affect reservoir development.