姬塬油田胡150—胡153区长4+5储层特征及主控因素  

Reservoir characteristics of Chang 4+5 in Hu150-Hu153 area of Jiyuan Oilfield and their main control factors

作　　者：温德顺[1] 陈章顺[2] 卜广平[2] 张博[2] 丁强[2] 槐伦伦[2] 

机构地区：[1]长庆油田勘探开发研究院,陕西西安710021 [2]长庆油田采油六厂,陕西西安710021

出　　处：《西安石油大学学报（自然科学版）》2010年第2期30-33,38,共5页Journal of Xi’an Shiyou University（Natural Science Edition）

摘　　要：姬塬油田胡150—胡153区长4+5油层组储层主要为湖泊三角洲前缘水下分流河道沉积,以长石砂岩和岩屑长石砂岩为主,属典型的低孔特低渗砂岩储层.运用铸体薄片、扫描电镜、铸体图像分析、阴极发光、高压压汞等测试技术手段,对该区长4+5储层进行分析研究,结果表明:该区储层性质明显受原始陆源组分、沉积相和成岩作用的影响.陆源碎屑组分是后期成岩作用改造的物质基础,储层性质受沉积相或微相的控制,水下分流河道砂体的储集物性明显优于其他微相砂体,成岩作用对储层物性优劣起主导作用,压实作用、胶结作用导致储层致密,物性变差,溶蚀作用尤其是长石的溶蚀作用对本区储层的改善具有重要意义.The Chang 4+5 reservoir in Hu150-hu153 area of Jiyuan Oilfield is mainly composed of the subaqueous distributary channel sandbody of lacustrine delta front,whose main lithology is arkose and debris-arkosic sandstone.The Chang 4+5 reservoir belongs to typical low porosity and extra-low permeability reservoir.Cast thin section,scanning electorn microscope,cast image analysis,cathodoluminescence,high-pressure mercury injection,and physical property data,etc.show that the characteristics of the reservoir is influenced by the interaction among original terrestrial components,sedimentary facies and diagenesis.Original terrestrial components provide the material basis for diagenetic reformation.Sedimentary facies is the basic factor of controlling the final distribution and characteristics of the reservoir.The underwater distributary channel in delta fronts is the favorable sedimentary environment for the formation and development of the reservoir.Diagenesis plays dominant role to the property of the reservoir.Compaction and cementation mainly lead to tight reservoir and poor reservoir property,while dissolution,especially feldspar dissolution makes the property of the reservoir better.

关 键 词：鄂尔多斯盆地 胡150-胡153区 长4+5储层 主控因素 成岩作用 

分 类 号：TE122.2[石油与天然气工程—油气勘探]