摘要
通过对研究区内大量测试分析资料的综合研究,对鄂尔多斯盆地姬塬地区长9油层组储集砂岩的岩石学特征、物性特征、孔隙结构及孔隙类型等进行深入研究,分析了影响储层储集性能的主要因素。结果表明,以辫状河三角洲平原沉积为主的长9储集砂体具结构成熟度中等的岩石学特点,孔隙类型以剩余粒间孔为主,溶蚀孔隙次之。孔隙度好(平均8.54%～10.85%)、渗透率高(平均2.05×10-1-3.8×10-1um)。在上述基础上深入分析了储层发育的影响因素,主要包括沉积作用、成岩作用对储层的影响。
By analyzing the petrology character,physical property,pore texture and pore types of the reservoir sandstones of the Oil Layer Group of the JiyuanAera in Ordos Basin,we discussed the major influencing factors of the reservoir performance.The result indicated that the formation of reservoir sandstones which deposited in braided-stream delta plain had media textural maturity,with residual pore type and dissolution pore type in sandstone reservoir.The porosity（the average is from 8.54 to 10.85%） and the permeability（the average is from 2.05 10 to 3.8 10 um）were good.Based on the above analysis we deeply discussed the influencing factors of reservoir development which mainly included the interaction of the sedimentation and digenesis.
出处
《中国西部科技》
2011年第5期12-14,32,共4页
Science and Technology of West China
关键词
鄂尔多斯盆地
姬塬地区
储层特征
控制因素
OrdosBasin
Jiyuan area
reservoir characterization
Controlling factor
