山西省柳林奥陶系古岩溶顶部储层及控制因素  

A RESERVOIR AT THE TOP OF ORDOVICIAN PALEOKARST AND ITS CONTROLLING FACTORS IN LIULIN,SHANXI

作　　者：王宝清[1] 

机构地区：[1]西安石油学院石油天然气地质研究所

出　　处：《地质论评》1996年第S1期130-136,381,共8页Geological Review

摘　　要：山西省柳林奥陶系古岩溶顶部储层主要由白云岩和石灰岩组成。孔隙度为0.5%—13.58%,平均为5.06%。渗透率为0.0125×10^(-3)—1224×10^(-3)μm^2,平均为21.67×10^(-3)μm^2。经过淋滤、溶蚀作用改造的白云岩具有最好的储集性能。最有意义的储集空间是溶蚀孔、洞、缝。根据岩性,储集空间的特征,碳、氧稳定同位素分布,铁、锰、钠、锶的含量,白云石的有序度MgCO_3含量,方解石充填物包裹体的均一温度和盐度,可以得出下述结论:影响储层发育的因素有沉积环境和沉积作用,淡水的淋滤作用和古岩溶作用,白云石化作用及充填作用。The reservoir at the top of Ordovician paleokarst in Liulin,Shanxi,is composed mainly of dolomite and limestone.The porosity ranges from 0.5% to 13.58% with a mean of 5.06%. The permeability ranges from 0.0125×10^(-3)μm^2 to 1224×10^(-3)μm^2 with a mean of 21.67×10^(-3) μm^2.The dolomite that has been reworked by leaching and dissolution possesses the best reservoir properties.The most significant reservoir space is solution pores,caves and fissures.According to the lithology,features of reservoir space,distribution of carbon and oxygen stable isotopes, Fe_2O_3,MnO,Na_2O and Sr contents,degrees of order and MgCO_3 content in dolomite, homogenization temperatures and salinity of fluid inclusions in calcite fillings,the factors controlling the development of the reservoir are sedimentary environments and deposition,leaching of fresh water,paleokarstification,dolomitization and filling.

关 键 词：控制因素 储层 古岩溶 奥陶系 

分 类 号：P618.13[天文地球—矿床学]