CAJ | 학술논문

为搞清西泉地区三叠系储层特征及主控因素，运用岩心、铸体薄片、毛管压力等资料，对储层岩石学特征、物性、孔隙结构进行研究，剖析影响储层物性的主要地质因素沉积相、成岩作用、构造应力作用和异常压力。认为：沉积相带、砂岩粒度是影响储层物性关键因素；成岩作用中压实作用、胶结作用是孔渗降低主要原因，溶蚀作用形成次生孔隙，改善储层物性；构造挤压应力及异常高压可导致储集层的压实，使物性变差。构造应力产生的断裂、微裂缝发育、异常高压的存在有利于孔隙的保存，一定程度上可改善物性。
위고청서천지구삼첩계저층특정급주공인소，운용암심、주체박편、모관압력등자료，대저층암석학특정、물성、공극결구진행연구，부석영향저층물성적주요지질인소침적상、성암작용、구조응력작용화이상압력。인위：침적상대、사암립도시영향저층물성관건인소；성암작용중압실작용、효결작용시공삼강저주요원인，용식작용형성차생공극，개선저층물성；구조제압응력급이상고압가도치저집층적압실，사물성변차。구조응력산생적단렬、미렬봉발육、이상고압적존재유리우공극적보존，일정정도상가개선물성。
In order to find out Characteristics and main controlling factors of Triassic Reservoir of Xiquan, the integrat-ed use of the core, casting thin sections, capillary pressure data, petrological characteristics, physical properties of the reservoir and pore structure characteristic has carried on the detailed research.Characteristics of reservoir physical prop-erty are caused by sedimentary facies, diagenesis, structure and abnormal pressure.Among these factors, sedimentary fa-cies and granularity are the key factor to control reservoir physical property. Compaction and cementation of diagenesis are the major cause to reduce porosity and permeability, nevertheless,dissolution could form secondary porosity and im-prove reservoir physical property.Tectonic compression and abnormal pressure may cause poor physical property by compaction of reservoir,On the other hand,Fracture and microcrack formed by Tectonic compression and abnormal high pressure is in favor of the preservation of the pore and improve reservoir physical property to a certain degree.