摘要
通过扫描电镜、铸体薄片、压汞曲线等实验资料,对渭北油田长3储集岩的岩石学特征、物性特征及孔喉结构特征进行了综合研究,对长3储层进行了分类评价。研究结果表明,渭北油田长3储集岩类型以岩屑长石砂岩为主;储集岩孔隙度为9%~15%,平均值为12.2%,渗透率为0.1~1.0 mD,平均值为0.76 mD;孔隙类型以粒间溶孔为主,剩余粒间孔、粒内溶孔次之。研究区长3储层可划分为Ⅰ类(好)、Ⅱ类(较好)、Ⅲ类(非或差)3种类型,结合优势储层研究成果,可明确产能“甜点区”的展布范围及规模,为渭北油田新井部署提供技术支撑。
By scanning electron microscopy(SEM),the casting thin sections and mercury injection curves,such as experimental data,the rock lithology characteristics,physical characteristics and pore throat structure characteristic of Chang3 reservoir in Weibei Oilfield has carried on the comprehensive research,and the reservoir classification is evaluated.The results show that lithic arkose is the main type of Chang3 reservoir rock in Weibei Oilfield.The porosity of reservoir rocks is 9%~15%,with an average value of 12.2%;the permeability is 0.1~1.0 mD,with an average value of 0.76 mD.The pore types were mainly intergranular pore.The Chang3 reservoir in the study area can be divided into three types:Ⅰ(good),Ⅱ(preferably)andⅢ(not or poor),combined with the advantages of reservoir research achievements,can clear capacity“dessert”area of the distribution scope and scale,and provide technical support for new wells of Weibei Oilfield.
作者
王俊
黎明
安超
王肃
吴可可
王惠卫
WANG Jun;LI Ming;AN Chao;WANG Su;WU Keke;WANG Huiwei(Petroleum Exploration and Development Research Institute,Henan Oilfield Branch Company,Sinopec,Henan Nanyang 473132,China;Henan EOR Key Laboratory,Henan Nanyang 473132,China)
出处
《非常规油气》
2021年第4期11-18,共8页
Unconventional Oil & Gas
基金
国家科技重大专项“页岩油资源评价及勘探关键技术攻关”(2017ZX05049)。
关键词
孔喉结构
毛管压力曲线
低渗透
渭北油田
pore throat structure
capillary pressure curve
low permeability
Weibei Oilfield
作者简介
第一作者简介:王俊(1983-),女,硕士,工程师,主要从事低渗透储层研究工作,邮箱:408683313@qq.com。
