鄂尔多斯盆地英旺油田长8储层微观孔隙结构特征研究  

Study on micro-pore structure characteristics of Chang 8 reservoir in Yingwang Oilfield, Ordos Basin

作　　者：张一果[1] 孙卫[1] 任大忠[1] 王越[2] 齐恒玄[1] 屈雪峰[3,4] 

机构地区：[1]西北大学大陆动力学国家重点实验室,陕西西安710069 [2]中国石化华北分公司工程技术研究院,河南郑州450006 [3]低渗透油气田勘探开发国家工程实验室,陕西西安710021 [4]中国石油长庆油田分公司勘探开发研究院,陕西西安710021

出　　处：《岩性油气藏》2013年第3期71-76,共6页Lithologic Reservoirs

基　　金：国家重大科技专项"大型油气田及煤层气开发--鄂尔多斯盆地大型低渗透岩性地层油气藏开发示范工程"项目(编号:2011ZX05044)资助

摘　　要：针对鄂尔多斯盆地英旺油田长8储层非均质性强、微观孔隙结构复杂及产量低等问题,利用扫描电镜、铸体薄片、高压压汞和油水两相渗流实验等对长8储层的岩石学特征、物性特征、微观孔隙结构及对渗流能力和驱油效率的影响作了详细研究。结果表明:该区的孔隙结构可分为3类,即粒间孔-溶孔、溶孔-粒间孔和微孔-溶孔类,其中溶孔-粒间孔类为该区最好的储层,应重点开发;填隙物的类型和相对含量、岩心孔隙度和平均孔喉半径是影响低渗透储层渗流能力的主要因素。Chang 8 reservoir in Yingwang Oilfield is characterized by strong heterogeneity, complex micro-pore structure and low yield. Based on scanning electronic microscope, casting thin slice, high pressure mercury penetration and oil/water displacement experiment, this paper studied the petrology characteristics, physical properties, micro-pore structure and its effect on flowing ability and oil displacement efficiency of Chang 8 reservoir in Yingwang Oilfield. The result shows that the pore structure can be divided into three types, including residual intergranular pore-dissolved pore, dissolved pore-residual intergranular pore and micropore-dissolved pore. We should focus on the dissolved pore-residual intergranular pore which is the best reservoir in the study area. The type and relative content of fillings, the core porosity and pore throat radius are the main factors influencing the flowing ability for low permeability reservoirs.

关 键 词：微观孔隙结构 渗流能力 长8储层 英旺油田 鄂尔多斯盆地 

分 类 号：TF311[冶金工程—冶金机械及自动化]