摘要
根据资阳地区灯影组取心段岩心的宏观、微观及地球化学特征，结合常规物性资料，研究了区内层状白云岩储集层的基本特征及主要控制因素，总结出这类储集层的储渗空间组合的演化及分布规律。认为：层状白云岩储集层以重结晶较强的粉晶白云岩、细晶白云岩、粉一细晶的残余砂屑白云岩、残余鲕粒白云岩为主；储集空间以次生成因的溶蚀孔、洞为主，而裂缝除具有一定的储集能力之外，更重要的是起到连通孔隙的作用；储集空间组合类型以裂缝-孔洞型和孔洞型为主。这类储集层主要分布在滩相和灰泥评相发育区。资3井、资4井一线及其西南侧属该类地区，应是重点勘探目标；勘探层位应以灯二段中、下部为重点，以寻找这类有利于储集层发育的相带。
Based on the macro, micro and geochemical characteristics of the cored intervals of Dengying Formation in Ziyang region and combined with routine petrophysical data, the basic features and the main controlling factors of the stratified dolomite reservoirs within the study area are studied and the spatial evolution and distribution pattern of porosity and permeability of this type of reservoirs are summarized in this paper. It is concluded that the stratified dolomite reservoirs are dominated by the strongly crystallized powder dolohate, fine dolomite, powder-fine residual.dolarenite and residual oolitic dolomite, and the pore space is predondnates by secondary solution vugs. Fractures, however, mainly play the role of connecting the pores except for possessing a certain capacity of storage. Fracture-vug and vug are the two main types of reservoir pore space. This kind of reservoirs are mainly located in the development areas of beach and calcareous mudnat facied, such as that along well Zi 3 and Well Zi 4 and their southwest area, which should be the main exploration targets where the upper and lower parts of the Deng Ⅲ Member should be explored in order to discover the facies favourable for the development of good reservoirs.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
1997年第2期37-40,共4页
Petroleum Exploration and Development
关键词
白云岩
储集层
资阳
四川盆地
油气藏
Dolostone, Reservoir, Dengying FM, Sinian system, Ziyang, Sichuan basin
