鄂尔多斯盆地姬塬地区长2_1储层特征及其影响因素  

Characteristics of Chang 2_1 Sandstone Reservoir in Jiyuan Region of Ordos Basin and Its Influence Factors

作　　者：申芳[1] 任亮[2] 李罡[1] 张冬冬[1] 魏爱霞[3] 杨莎莎[1] 

机构地区：[1]西安石油大学石油工程学院,陕西西安710065 [2]青海油田采油二厂地面建设室,青海德令哈816400 [3]西南石油大学石油工程学院,四川成都610500

出　　处：《辽宁化工》2010年第10期1089-1092,共4页Liaoning Chemical Industry

摘　　要：根据铸体薄片、扫描电镜、物性、孔隙结构、岩心和测井分析以及化验资料,对鄂尔多斯盆地姬塬地区延长组长21砂岩储层特征进行的研究结果表明,该套储层储集空间以原生孔隙、次生孔隙及裂缝为主;储层物性较差,属于典型的低孔低渗油藏;孔隙包括3种主要的类型:粒间孔隙、已知次生孔隙、微孔和微裂隙,其中以粒间孔隙为主。影响储层质量好坏的主要因素是沉积微相和成岩作用。Characteristics of Chang 21 sandstone reservoir in Jiyuan region of Ordos Basin were investigated by the data ot core analysis, log, scanning electron microscope, porosity and permeability analysis, acoustic emission test and mercury injection test. The resuhs show that pore space of the reservoir mainly includes primary residual intergranular pores , secondary intergranular pores and crack.. The reservoir physical properties is not well and it belongs to the typical reservoir of low porosity and low permeability. There are three types of pore. They are secondary pore, millipore and microfissure,intergranular pore which is the most important in the three types. The quality of reservoir was affected by sedimentary microfacies and diagenesis.

关 键 词：鄂尔多斯盆地 延长组 储层特征 

分 类 号：TE122.23[石油与天然气工程—油气勘探]