鄂尔多斯盆地北部FF区低阻油气层评价方法  

Evaluation methods of low-resistivity reservoir in FF block in the northern Ordos Basin

作　　者：杨玉祥[1] 

机构地区：[1]中国石油大学石油工程学院,北京102249

出　　处：《西安石油大学学报（自然科学版）》2010年第5期1-5,共5页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：陕西省工业攻关计划基金项目(编号:2009K10-15)

摘　　要：为了解决鄂尔多斯盆地北部FF区低阻油气层测井评价问题,对研究区进行了地质分析、低阻油气层测井曲线特征分析.在岩心分析的基础上进行了工区低阻油层成因机理研究;最后针对研究区低阻储层识别的难点提出技术对策,建立了该区低阻油层判识标准,提出了多种低阻油层测井识别的辅助方法.研究表明,本区低阻油层的主要成因是目的层孔隙结构复杂及储层微孔率高、地层水矿化度高、黏土膜改善了含油地层的导电路径等.采用岩心物理实验和试油刻度与测井解释相结合的方法,可以有效提高低阻油层的判识精度.The geological condition and the features of the logging curves of low-resistivity oil strata are analyzed based on the research results of predecessors.The causes of forming the low resistivity reservoir in the studied area are studied on the basis of core analysis.And then,the criterion for identifying the low-resistivity reservoirs is established,and the assisting methods for identifying the low-resistivity reservoirs according to logging data logging are presented.It is held that the causes of forming the low resistivity reservoir is the complex pore structure and high micropore ratio of the objective strata,the high salinity of formation water and the improvement of the electric conduction way of reservoir caused by argillan.The established classifying criterion of the conventional logging curves of low resistivity reservoir can effectively increase the accuracy of identifying the low-resistivity reservoirs.The presented assisting identifying methods,such as vertical resisitivity correlation method,resisitivity curve shape analysis method,shale content difference correlation method,horizontal logging correlation method and NMR,are very effective.

关 键 词：鄂尔多斯盆地 低阻油层 成因机理 判识方法 

分 类 号：TE122.2[石油与天然气工程—油气勘探]