临汾致密砂岩气勘探区储层沉积特征研究

发布时间：2018-07-13 10:27

【摘要】：以沉积学和石油地质学为理论指导,在总结前人研究成果基础之上,结合测井资料和钻井取心资料,进行室内描述和薄片分析,深入系统地研究了临汾西部地区山西组和下石盒子组盒_8段的沉积砂体与沉积微相展布特征。研究认为:研究区山西组和下石盒子组盒_8段主要发育辫状河三角洲—湖泊沉积相,并细分为3个亚相8个微相,三角洲前缘亚相是沉积主体;山_2段的渗透率和试气效果明显高于山_1段和盒_8段;水下分流河道微相的储集物性好于河口砂坝微相。研究区山_2段水下分流河道微相是下步油气开发的最有利相带。该研究为临汾致密砂岩气藏有利探区的优选提供了一定的指导作用。
[Abstract]:Based on the theory of sedimentology and petroleum geology, the laboratory description and thin slice analysis are carried out on the basis of summarizing the previous research results, combining well logging data and drilling coring data. The distribution characteristics of sedimentary sandbodies and sedimentary microfacies in Shihe8 member of Shanxi formation and Xiashihezi formation in western Linfen are studied. It is concluded that the braided river delta-lacustrine sedimentary facies are mainly developed in Shanxi formation and Xiashihezi formation in the study area, and are subdivided into 3 subfacies and 8 microfacies, and the delta front subfacies is the main sedimentary body. The permeability and gas test effect of the subaqueous distributary channel is better than that of the estuarine bar and the permeability of the subaqueous distributary channel is better than that of the subaqueous distributary channel and the subaqueous distributary channel is better than the estuarine bar microfacies. The microfacies of the subaqueous distributary channel in Shanshizi section of the study area is the most favorable facies zone for the next step of oil and gas development. This study provides some guidance for the optimal selection of favorable exploration area for Linfen tight sandstone gas reservoir.
【作者单位】：国土资源部页岩气资源勘查重点实验室;重庆市页岩气资源与勘查工程技术研究中心;重庆地质矿产研究院;中国石油煤层气有限责任公司;长江大学;
【基金】：国家自然科学基金“页岩气储层低频脉冲水力压裂增渗机理研究”(51304258) 国家“十二五”重大油气专项“煤层气排采工艺与数值模拟技术”专题“煤层气藏产气潜能分析与产能评价方法研究”(2011ZX05038-001)
【分类号】：P618.13

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