延长气区砂岩储层层内非均质性测井响应  

Application of well log response to sand reservoir heteroceneity analysis in layer,Yanchang gas area

作　　者：张丽霞 申贻博[2] 孙佩[2] 

机构地区：[1]陕西延长石油(集团)有限责任公司研究院,陕西西安710075 [2]西北大学地质学系,陕西西安710069

出　　处：《西北大学学报（自然科学版）》2010年第2期309-313,共5页Journal of Northwest University（Natural Science Edition）

基　　金："115"国家科技支撑计划基金资助项目(2007BAB1701)

摘　　要：目的研究延长气区低孔低渗-低孔特低渗砂岩储层的层内非均质性。方法通过岩心分析、测井资料综合解释和试井分析等手段进行研究。结果泥质含量曲线可以有效反映砂层内部垂向上粒度分布的韵律性;自然伽马、声波时差等曲线的齿化程度反映储层层内层理构造的发育程度;泥质含量、孔隙度、电阻率3种测井数据系列综合分析,可以有效识别泥质夹层和致密夹层;声波时差-自然电位曲线重叠以及不同探测范围的电阻率曲线之间的幅度关系,有效反映砂岩储层层内渗透率及其非均质特征。结论提取有关砂岩储层层内非均质性特征的测井响应特征,可以系统进行储层层内非均质性研究。Aim To study the tight sand reservoir attribute in Yanchang gas arae.Methods Well log attribute of sand reservoir heteroceneity in layer has been studied by means of core analysis,well log interpretation and well test data.Results Gamma ray and SP log curve are the characters of rhythm of the vertical granularity parameters in layer.The logging curve unsmoothing presented the development of bedding structures of sand layers.By analysis of shale content series curve,porosity logging series curves and resistivity logging series curves,the muddy intercalation and calcareeous intercalation are identified.The change of overlap processing with SP log curve and acoustic curve and the difference characters of deep resistivity log and shallow one are the indication of permeability and its heteroceneity.Conclusion The study of sand reservoir heteroceneity analysis in layer can be done by well log response analysis.

关 键 词：储层 低孔低渗 非均质性 测井响应特征 延长气区 

分 类 号：TE341[石油与天然气工程—油气田开发工程]