松南王府地区登娄库组—泉头组一段储层物性及控制因素

以沉积相研究作为基础对松辽盆地王府地区登娄库组—泉头组一段碎屑岩储层的岩石学、成岩作用、储层物性及控制因素的研究表明:该区目的储层的岩石类型以岩屑长石砂岩和长石砂岩为主,而孔隙类型主要为粒间缩小孔隙和粒内溶蚀孔隙。孔隙结构以Ⅲ级为主,属于低孔-特低孔和特低渗-超低渗砂体。有利沉积相带是控制储层物性高值区分布的内在因素;胶结作用是泉头组一段储层物性衰减的关键因素;压实与胶结作用是登娄库组储层物性衰减的重要因素;溶解作用形成了局部登娄库组2 400~2 600 m次级孔隙高值带。

Reservoir physical property and controlling factors of Denglouku Formation-the 1st member of Quantou Formation in Wangfu area,southern Songliao Basin

Based on the study of sedimentary facies,diagenesis of the clastic reservoir and the lithologic features as well the reservoir physical properties and controlling factors of Denglouku Formation-the 1st member of Quantou Formation in Wangfu area were investigated by means of integrate laboratory analysis techniques.The results show that the rock types of the reservoir in this area are mainly feldspar sandstone and lithic arkose,the pores of reservoir sands mainly are intragranular dissolution and intergranular in type.But the pore structure is mainly of the type Ⅲ,and the reservoir belongs to ultra-low porosity and ultra-low permeability reservoirs.Favorable sedimentary facies belt is the intrinsic factor to control the high value area distribution of reservoir property.Cementation is the key factors of attenuation of reservoir physical properties.Compaction and cementation are important factors of attenuation of reservoir physical properties in Denglouku Formation.Dissolution formed part of 2 400 ～ 2 600 m secondary pore high value zone of the Denglouku Formation.