CAJ | 학술논문

通过岩心观察、薄片鉴定、录测井资料分析、物性分析等方法,研究了松辽盆地长岭凹陷腰英台地区青山口组储层的岩石学特征、孔喉特征和物性特征,分析了影响储层物性的主要因素.结果表明:储层岩石为细-粗粒长石砂岩,砂岩成分成熟度较低、结构成熟度中等-较低.储层为低孔-特低渗储层,孔隙类型为粒间孔隙、粒内溶孔、粒闻溶孔和微裂缝,以粒间孔隙为主.砂岩面孔宰在10%～15%之间,平均喉道半径、视孔喉比小.影响储层物性的因素主要为微观方面的岩石结构及填隙物特征、成岩作用和宏观方面的沉积微相.
통과암심관찰、박편감정、록측정자료분석、물성분석등방법,연구료송료분지장령요함요영태지구청산구조저층적암석학특정、공후특정화물성특정,분석료영향저층물성적주요인소.결과표명:저층암석위세-조립장석사암,사암성분성숙도교저、결구성숙도중등-교저.저층위저공-특저삼저층,공극류형위립간공극、립내용공、립문용공화미렬봉,이립간공극위주.사암면공재재10%～15%지간,평균후도반경、시공후비소.영향저층물성적인소주요위미관방면적암석결구급전극물특정、성암작용화굉관방면적침적미상.
By means of core observation, thin-section identification, log and well logging data analysis as well as physical property analysis, the petrological characteristics, characteristics of pore throat and physical property and also influential factors of reservoirs in Qingshankou Formation were studied in Yaoyingtai Area of Changling Sag in Songliao Basin. The result shows that reservoirs are mainly fine-coarse arcoses, the sandstones can be compositionally classified as immature and middle-lower structural maturity. The reservoir belongs to a low-porosity and extra low-permeability reservoir, its reservoir space is primarily composed of intergranular, intragranular, interg-ranular dissolved pores and microfissures, the intergranular pores are mostly developed. The pore of sandstone percent ranges from 10% to 15%, and the average throat radius and apparent pore/throat ratio are low. The main factors that influence the reservoirs are characteristics of rock structure and interstitial material , diagenesis in microscopic aspect, as well as sedimentary microfacies in macroscopic aspect.