冀中坳陷前第三系碳酸盐岩储层类型及成岩作用  

Carbonate rock reservoir types and diagenesis of the pre-tertiary in Jizhong Depression

作　　者：王雨洁[1] 

机构地区：[1]胜利油田分公司物探研究院,山东东营257022

出　　处：《油气地球物理》2014年第2期57-61,共5页Petroleum Geophysics

基　　金：国家自然科学基金(40772081);山东省自然科学基金(Y2008E16);国家科技重大专项(2008ZX05001)联合资助

摘　　要：前第三系碳酸盐岩储层是冀中坳陷的重要产油气层,其储集空间以次生孔隙(溶洞、溶孔、裂缝)为主,成岩作用对碳酸盐岩储层影响很大。根据碳酸盐岩油气藏储渗空间综合分析,将储层分为缝洞孔复合型、溶洞裂缝型、似孔隙型和微缝孔隙型4种类型。通过对岩心、普通薄片、铸体薄片和流体包裹体等多种资料进行综合研究,详细阐述了主要成岩作用类型及其对储层的影响。根据成岩作用与对储层储集性能的影响可以划分为建设性成岩作用及破坏性成岩作用两大类。建设性成岩作用有利于改善或提高储层孔渗性能,主要有岩溶、白云石化和破裂作用等;破坏性成岩作用能导致储层孔渗性能变差,主要有压实、胶结和充填作用。The Pre-Tertiary carbonate rock reservoirs are the main hydrocarbon-producing layers in Jizhong Depression. The reservoir space is dominated by induced porosity （limestone cave, corroded hollow, and fracture）. The influence of diagenesis on the carbonate rock reservoir is obvious and serious. According to the comprehensive analysis of the permeable space of the carbonate rock reservoir, the reservoirs are classified into fracture-cave-pore reservoir, cave-fracture reservoir, pore reservoir and micropore reservoir. Based on the analysis of the cores, common slices, cast slices, fluid inclusions, this paper expounds in details of the diagenesis and its influence on the reservoirs. According to the influence of the diagenesis on the reservoir performance, the diagenesis is divided into constructive diagenesis and destructive diagenesis. The constructive diagenesis can increase the porosity and permeability of reservoir （including karst, dolomitization, and cataclasis etc.）, the destructive diagenesis can decrease the porosity and permeability of the reservoir （including compaction, cementation and filling etc）.

关 键 词：碳酸盐岩 储层 成岩作用 冀中坳陷 

分 类 号：P618.130.2[天文地球—矿床学]