海安南地区泰一段储层影响因素分析  

Analysis of influencing factors of K_2t_1 reservoir in the south of Haian area

作　　者：唐在秋[1] 林式微[1] 毕建福[1] 黄飞[1] 伍国勇[1] 

机构地区：[1]中国石化江苏油田分公司地质科学研究院,江苏扬州225009

出　　处：《复杂油气藏》2011年第3期47-50,共4页Complex Hydrocarbon Reservoirs

摘　　要：海安南地区白垩系泰一段为三角洲沉积,且主要为三角洲前缘亚相沉积。其储层孔隙以原生孔隙和次生孔隙的混合类型形式存在,原始物性受沉积相带的控制并受沉积物分选影响,物性优劣顺序为三角洲前缘水下分流河道、河口坝、远砂坝、水下天然堤。成岩作用以胶结和溶蚀作用为主,压实与交代作用不太明显,碳酸盐胶结物溶蚀形成大量的粒间溶孔,现今孔隙度和渗透率与碳酸盐含量呈明显的负相关关系。In the Tai formation of Cretaceous of the southern Haian area, the sediments are formed in delta deposits. Deh - front sub - facies are a major type of sedimentary sub - facies. The reservoir pores exist as the hybrid type of primary porosity and induced porosity. The primary physical properties were controlled by sedimentary facies belts and were influenced by sorting of sediments. The good and bad order of the reservoir physical properties was ： delta front subaqueous distributary channel, mouth bar, distal bar and underwater natural levee. The diagenesis is mainly on cementation and dissolution, and is not obviously on compaction and metasomatism processes. The carbonate cements created a great deal of intergranular dissolution pores. There was a obvious inverse relation between the current porosity and permeability, and the carbonate content.

关 键 词：海安南地区 泰一段储层 储层物性 沉积相 成岩作用 

分 类 号：I122.24[文学—世界文学]