新疆风城油砂储层物性特征及孔隙结构研究  

Study on Physical Properties and Physical Characteristics of Fengcheng Oil Sand Reservoir in Xinjiang

作　　者：王启予 WANG Qiyu(Geophysical Research Institute,Shengli Oilfield Branch Co.,Sinopec,Dongying 257022,China)

机构地区：[1]中石化胜利油田分公司物探研究院,山东东营257022

出　　处：《河南科技》2023年第2期97-102,共6页Henan Science and Technology

摘　　要：【目的】通过对风城地区油砂储层物性及孔隙结构研究,为油砂矿的勘探开发利用提供理论基础。【方法】以新疆风城地区油砂作为研究对象,通过油砂岩石薄片观察,结合扫描电子显微镜(SEM)、X射线衍射(XRD)及黏土矿物成分分析等测试手段对油砂储层发育特征进行分析。采用高压压汞(MIP)、低温液氮吸附法(LTN2A)等测试手段对风城油砂孔隙结构开展具体研究。【结果】新疆风城油砂储层具有中—高孔隙度,中—高渗透性的特点,平均含油率为10.5%。油砂孔隙类型以原生粒间孔为主,其次为剩余粒间孔,溶蚀孔。通过联合液氮-压汞法表征,得出油砂的孔容主要分布于孔径10~100μm,阶段孔比表面积主要集中分布于微孔、过渡孔以及10~100μm超大孔中。【结论】新疆风城油砂储层物性较好,具有良好的开发潜能,后期可结合其物性特征及孔隙结构选择适合的开采手段。[Purposes]The study of reservoir physical properties and pore structure of oil sands in Fengcheng area provides a theoretical basis for the exploration and development of oil sands.[Methods]Taking the oil sands in Fengcheng area of Xinjiang as the research object,the development characteristics of oil sands reservoir were analyzed by observing the rock slices of Fengcheng oil sands and combining with scanning electron microscope(SEM),X-ray diffraction(XRD)and composition analysis of clay minerals.The pore structure of Fengcheng oil sand was studied by means of high pressure mercury intrusion(MIP)and low temperature liquid nitrogen adsorption(LTN2A).[Findings]The results show that the oil sand reservoir in Fengcheng has the characteristics of medium-high porosity and mediumhigh permeability.The average oil content is 10.5%.The pore types of oil sands in the study area are mainly primary intergranular pores,followed by residual intergranular pores and dissolution pores.Through low temperature liquid nitrogen associated with high pressure mercury injection token method.The pore capacity of oil sand is mainly distributed at 10~100μm.Specific surface area of stage holes is mainly distributed at micropore-transitional pore and10~100μm.[Conclusions]Fengcheng oil sand reservoir in Xinjiang has good physical properties and good development potential.In the later stage,suitable mining methods can be selected according to its physical properties and pore structure.

关 键 词：风城 油砂 储层物性 孔隙结构 

分 类 号：P618.13[天文地球—矿床学]