临汾致密砂岩气勘探区储层沉积特征研究  

Research on Reservoir Sedimentary Characteristics in Exploration Area of Tight Sandstone Gas in Linfen

作　　者：王丹 张盖霞 张颂颂 郑阁 詹贵斌 

机构地区：[1]国土资源部页岩气资源勘查重点实验室,重庆400042 [2]重庆市页岩气资源与勘查工程技术研究中心,重庆400042 [3]重庆地质矿产研究院,重庆400042 [4]中国石油煤层气有限责任公司,山西太原030032 [5]长江大学,湖北武汉430100

出　　处：《特种油气藏》2017年第6期39-43,共5页Special Oil & Gas Reservoirs

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)

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。Based on the summary of previous research results, logging data and core data are used for laboratory de- scription and thin section analysis and the distribution pattern of sedimentary sand body and sedimentary micrefacies in Hes zone in Shanxi formation and lower Shihezi formation in west Linfen area are deeply and systematically inves- tigated, using sedimentology and petroleum geology as theoretical guidance. It is determined that braided fiver delta -lacustrine facies is the dominant facies developed in Hes zone in Shanxi formation and lower Shihezi formation in the research area and it＇ s divided into three subfacies and 8 microfacies, among which delta front subfacies is the dominant sedimentary body. Permeability and gas testing result in Shan2 zone are significantly higher than that in ShanI zone and he8 zone. Reservoir properties of underwater distfibutary channel subfaeies are better than that of channel mouth bar subfacies. The underwater distributary channel subfacies in Shan2 zone in the research area is the most favorable facies for further oil and gas development. This research provides guidance for optimization of favora- ble exploration area for tight sandstone gas reservoirs in Linfen.

关 键 词：致密砂岩气 沉积特征 储集层 临汾西部地区 

分 类 号：TE122.2[石油与天然气工程—油气勘探]