歧口凹陷滨海地区沙河街组深层碎屑岩储层特征及主控因素  

Characteristics and Formation Deep Clastic Reservoir in Binhai Area of Qikou Sag

作　　者：王书香[1] 于学敏[1] 何咏梅[1] 姜文亚[1] 

机构地区：[1]中国石油大港油田公司勘探开发研究院,天津300280

出　　处：《天然气地球科学》2010年第4期566-571,共6页Natural Gas Geoscience

基　　金：中国石油股份公司科技管理部"歧口富油凹陷大油气田勘探及综合配套技术研究"项目(编号:2008-030603)资助

摘　　要：综合应用物性及孔隙结构分析数据,并结合沉积岩普通薄片、铸体薄片以及X-射线衍射等资料,对歧口凹陷滨海地区沙河街组深层储层特征及影响因素进行了分析,结果表明:深层碎屑岩储层属于中低孔—(特)低渗型,沙一段储层物性好于沙三段,孔隙度在纵向上的演化具有明显的分带性,具有多个次生孔隙发育带;沉积相带、成岩作用和超压作用是影响深部储层物性的3大主要因素,而建设性的溶解作用是次生孔隙发育的关键因素;裂缝的发育对深部储层的改造也具有重要的作用。In this paper we discuss the characteristic and formation of deep clastic reservoir in the Binhai area of Qikou sag by means of integration of data of physical property and pore structure, thin section, epoxy resin-impregnated thin sections, SEM and X ray. The result shows that the deep clastic reservoir is low- middle porosity and micro low permeability, and the reservoir quality of Es1 is better than that of Es3. Meanwhile, there is a vertical zonal distribution of porosity for deep clastic reservoir, with secondary pore zone. The physical property of deep clastic reservoir is constrained by sedimentary facies, diagenesis and abnormal pressure function, and the constructive dissolution is a main factor of controlling the secondary pore. Additionally, the occurrence of fractures does the reservoir reconstruction.

关 键 词：深层 碎屑岩 储层 物性 成岩作用 歧口凹陷 

分 类 号：TE122[石油与天然气工程—油气勘探]