摘要
针对鄂尔多斯盆地陇东地区长7致密储层孔隙结构复杂、储层有效性评价困难的问题,基于分形理论,分别利用压汞曲线及CT图像对分形维数求解。通过计算的分形维数求解分形孔隙度,并与实验孔隙度对比。结果表明,两类分形维数的计算结果能反映其与孔隙结构间的关系,均表明该样品为中等非均质性。研究后认为,分形维数可以用于孔隙结构类型的表征。
Aiming at the problems of complex pore structure and difficult evaluation of reservoir validity of Chang 7 tight reservoir in Longdong area of Ordos Basin,fractal dimension was solved by mercury injection curve and CT image based on fractal theory.The fractal porosity is calculated by the fractal dimension and then compared with the experimental porosity.The results show that the two types of calculated fractal dimensions can reflect the relationship between the fractal dimension and the pore structure,the sample is medium heterogeneity,and the fractal dimension can be used to characterize the pore structure type.
作者
王妍
马瑶
王若谷
陈永振
孙博亚
李文厚
吴越
WANG Yan;MA Yao;WANG Ruo-gu;CHEN Yongzhen;SUN Boya;LI Wenhou;WU Yue(College of Petroleum Engineering,Xi′an Shiyou University,Xi′an 710065,China;Research Institute,Yanchang Petroleum(group)Co.,Ltd.,Xi′an 710006,China;Institute of Energy and Chemical Engineering Shaanxi(IECES),Xi′an 710069,China;College of Geology and Environment,Xi′an University of Science and Technology,Xi′an 710054,China;Department of Geology,Northwest University,Xi′an 710069,China;The Eleventh Oil Production Plant,Changqing Oilfield Company,PetroChina,Qingyang 745000,China)
出处
《西北大学学报（自然科学版）》
CAS
CSCD
北大核心
2019年第6期935-940,共6页
Journal of Northwest University（Natural Science Edition）
基金
陕西省自然科学基金资助项目(2017JQ4007)
关键词
致密砂岩
孔隙结构
分形特征
压汞曲线
CT图像
tight sandstone
pore structure
fractal characteristics
mercury injection curve
CT image
