摘要
对储层岩石学特征(主要包括岩石类型、碎屑组合特征及填隙物特征等方面)进行了研究,并在孔渗、压汞、常规薄片及铸体薄片鉴定的基础上,对储层的孔隙度、渗透率及孔喉特征、孔隙的演化进行了分析。研究结果表明,砂岩成份成熟度和结构成熟度均较低;该区东营组储层从低孔低渗到低孔特低渗储层到高孔高渗储层均发育;纵向上,储层物性总体上随深度的增加而降低;储层总体上较好,以原生粒间孔为主,粒间溶孔常见,主要为粒间溶蚀扩大孔;储层物性主要受控于沉积因素,而受成岩的影响较小。
Through the analysis of the reservoir characteristics,including rock type,clastic assemblage and interstitial material characteristics.Based on porosity and permeability,mercury injection,and identification of thin section,the porosity,permeability and pore characteristics and the evolution of pore are analysed.Result shows that the compositional maturity and structural maturity of the sandstone are in low level.Through the analyses of thin section and mercury injection,it indicates that reservior is from low-porosity and low-permeability to low-porosity and super-low permeability then high porosity and permeanbility.Vertically,the whole reservoir properties decrease with the increase of depth.The primary intergranular pore is the main void structure,common to intergranular dissolution pore,Mainly intergranular corrosion pore expansion.Reservoir is mainly controlled by sedimentary factors,less affected by diagenesis.
出处
《长江大学学报（自然科学版）》
CAS
2011年第2期23-25,279,共3页
Journal of Yangtze University(Natural Science Edition)
关键词
文安斜坡
东营组
砂岩储层
物性特征
控制因素
Wen'an Slope
Dongying Formation
sandstone reservoir
physical character
control factor
