Eastern Sag In Liaohe Depression South Of Igneous Reservoir Condition Research

Through this research, clear the area of each layer in the system especially in Sha threesection in the distribution of igneous rocks. Study of igneous rocks in the plane along themain fault distribution, has certain inheritance and the performance for the period bystrike-slip displacement characteristics; vertical multicycle characteristics, and the volcanoeruption cycle division, summarizes the different cycle characteristics, combined withcharacteristics of the earthquake, the volcano rock of portrait. On the basis of a large numberof core samples and observed under a microscope is described, the study area of thePaleogene Sha three section in igneous rock reservoir space consists of holes, holes and slits,according to Cheng Yan and the transformation of different stages can be divided into theprimary reservoir space and secondary reservoir space of two categories, based on themechanism of formation, reservoir space speciation and distribution characters, divided into9types14sub types. The igneous rock reservoir space types, characteristics and causes areanalyzed and from the sedimentary facies, diagenesis and rock three respects analysed theeffect of the reservoir space factors of reservoir space; that the main influencing factorsincluding diagenesis, lithology, lithofacies. Early diagenesis mainly determines the primarypore formation distribution, while the late diagenesis mainly influences the primary pore andsecondary pore development reformation; study of igneous rocks in basic, developmentprimary reservoir space types, stomata, phenocrysts fried crack, intergranular pore, gravelhole, with cracks; secondary pore visible: phenocryst solution pore, matrix dissolution pore,amygdaloid solution holes, tectonic fracture. Around the volcano near Crater facies, combinedwith drilling constraint and volcano rock eruption cycle development regularity, furtherspeculation and delineation of volcano rock and reservoir development favorable zone,depicts the west wing, Ohira Bo, red star-Jiazhangsi area of igneous rock. Based on theabove research findings on the favorable reservoir are predicted, in the southern section ofigneous reservoir exploration deployment is provided on the basis of volcano rock reservoir,on the promotion of this area oil gas exploration has a certain practical significance.