桩西下古生界潜山油藏储集空间类型及其控制因素

通过岩心观察、薄片鉴定以及扫描电镜等分析,查明了桩西下古生界潜山油藏的储集空间类型, 并阐述了其影响因素。研究表明,桩西下古生界潜山油藏发育3类7种储集空间类型,即晶间孔、晶间溶 孔、溶蚀洞、角砾间洞、构造缝、层间缝、压溶缝;影响储集空间发育的因素主要包括构造运动、断裂、 岩性、火成岩侵入体以及剥蚀程度等。根据各储集空间的组合,储层划分为缝洞复合型、裂缝孔隙型及 微孔徽缝型3种类型;目前生产动态资料表明,缝洞复合型、裂缝孔隙型储层为有效储层。

Type and Control Factors in Lower Palaeozic Reservoirs in Zhuangxi Buried Hill

By core observation, section identification, and scanning electron microscopic analysis, the type of Zhuangxi lower Palaeozoic reservoir space in buried hill is clarified and its influence is described. Study shows that 7 types of reser- tion degree. Based on its spatial assemblage, the reservoirs can be divided into fissure-hole type, fissure-pore type and micro pore-fissure. Dynamic production data shows that the pore-fissure type and fissure-hole type are the beneficial reservoirs.