柴页1井中侏罗统页岩气储层的流体包裹体特征研究  

Characteristic of Fluid Inclusions in the Middle Jurassic Shale Gas Reservoir of Well Chaiye-1

作　　者：尚长健[1] 邱林飞[1] 黎琼[1] 吴迪[1] 

机构地区：[1]核工业北京地质研究院,北京100029

出　　处：《东华理工大学学报（自然科学版）》2016年第2期178-183,共6页Journal of East China University of Technology(Natural Science)

基　　金：基金项目:柴达木盆地富有机质泥页岩层段油气赋存特征研究(12120113040000)

摘　　要：页岩气地质研究过程中,不可避免的需要提取地质流体信息。流体包裹体是研究地质流体最直接、最可靠的手段之一,却在页岩气地质研究中很少应用,主要是由于泥页岩成岩矿物细小,不易形成流体包裹体。以柴页1井中侏罗统泥页岩中砂岩夹层成岩矿物捕获的流体包裹体为研究对象,利用显微岩相学观察、均一温度测定、激光拉曼光谱分析、古压力恢复等分析测试手段,研究地质流体特征。研究表明,柴页1井中侏罗统存在两期油气充注活动;地质流体温度为72～90℃,成分主要是CH4,N2,CO2,压力集中于26.8～37.1 MPa。The information of geofluid in the shale gas is unavoidable in the study. The fluid inclusion method is one of the most direct and reliable way to study the characteristic of geofluid. However, it is not widespreadly used in shale gas research. This is because fluid inclusion is hard to form in the fine particles. The research object of this paper is the fluid inclusions in the diagenetic mineral of sandstone interlayer of the Middle Jurassic mudstone in well Chaiye-1. Lithofacies micro-observation, homogenization temperaturemeasurement, laser Raman spectrogram analysis, restoration of paleogeopressure are used in this study. The results show that 2 stages are developed in the Middle Jurassic of well Chaiye-1 ; the temperature of geofluid is 72 - 90 ℃ ; geofluid is composed of CH4, N2 and CO2 ; its paleogeopressure is mainly 26.8 - 37.1 MPa.

关 键 词：流体包裹体 地质流体 页岩气 柴页1井 中侏罗统 

分 类 号：P618.13[天文地球—矿床学]