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作 者:高知云[1]
机构地区:[1]西北大学地质学系
出 处:《西北大学学报(自然科学版)》1995年第4期348-352,共5页Journal of Northwest University(Natural Science Edition)
摘 要:沧县隆起雾迷山组分为I,Ⅱ,Ⅲ3个岩性段,各段厚度相差较大。各段地层均由白云岩和硅质白云岩组成,叠层石发育,类型繁多,指相意义大。根据岩石类型、沉积构造、叠层石形态以及电性特征的重复出现,3个岩性段代表3个大的沉积旋回,每一旋回均呈现潮上、潮间、潮下的海进层序。形成于典型的浅水陆表海潮坪沉积环境。由于受岩相、岩性控制,受成岩环境变化的影响,根据电性指标、物性数据和试油成果,初步确定雾Ⅲ段、雾Ⅱ段为好的储层段,属Ⅱ级储集岩;雾I段地层当遭受强烈后期改造时,亦可成为较好储层。Wumishan formation in Cangxian uplift can be divided into three parts:Wu I.Wu Ⅱ,WuⅢ,Each of them is composed of dolomites and siliceous with abundant and variety of stromatoliteswhich could indicate phases.The three part represent the three large eycles of sedimentation and eachcycle shows the transgressive succession of backshofe, foreshore and offshor. The Wu Ⅱ and Wu Ⅲparts are excellent reservoir and they are belong to the gradeⅡreservoir rocks.According to the elcec-trical indexes ,physical parampwters and the test-oil results.The Wu Ipart could become a good reser-voir when it is strongly modified.
分 类 号:P618.130.2[天文地球—矿床学]
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