鄂尔多斯盆地定边-高桥地区盒八段储层特征及控制因素分析

Reservoir Characteristics and Control Factors of He 8 of Permian Shihezi Formation in Dingbian-Gaoqiao Area of Ordos Basin

结合测井资料、岩心观察、铸体薄片、物性等资料,对鄂尔多斯盆地定边-高桥地区中二叠统石盒子组八段(P2sh8)储层的岩石学特征、物性特征、孔隙类型及孔隙结构进行了深入研究,探讨了影响储层储集性能的主要控制因素。研究表明,P2sh8储层砂岩类型主要为石英砂岩、岩屑石英砂岩,其成分成熟度较好,结构成熟度中等。孔隙类型以岩屑溶孔和晶间孔为主。物源条件、沉积环境及成岩作用是控制P2sh8储层特征的主要因素。

Based on logging,core observation,cast thin sections and analysis data of physical property,the petrology character,physical property,pore texture and pore types of the reservoir of He 8reservoir in Dingbian-Gaoqiao Area of Ordos Basin were deeply studied,and the major influencing factors of the reservoir were analyzed.The result indicates that the sandstone types of the He 8reservoir are mainly of quartz sandstones and debris-quartz sandstones with good maturity and moderate maturity in texture.The pore types of the reservoir are dominated by debris dissolved pore and inter-crystalline pore.The main control factors affecting the reservoir characteristics of He 8reservoir include the provenance conditions,sedimentary environment and diagenesis.