Influence of formation heterogeneity on foam flooding performance using 2D and 3D models:an experimental study

作     者：Ling-Zhi Hu Lin Sun Jin-Zhou Zhao Peng Wei Wan-Fen Pu Ling-Zhi Hu;Lin Sun;Jin-Zhou Zhao;Peng Wei;Wan-Fen Pu

作者机构：State Key Laboratory of Oil and Gas Reservoir Geology and ExploitationSouthwest Petroleum UniversityChengdu 610500SichuanChina MOE Key Laboratory of Oil and Gas Fine ChemicalsSchool of Chemistry and Chemical Engineering.Xinjiang UniversityUrumchi 830046XinjiangChina Yumen Oilfield of Chinese National Petroleum Corp.Yumen 735211GansuChina 

出 版 物：《Petroleum Science》 (石油科学（英文版）)

年 卷 期：2020年第17卷第3期

页      面：734-748页

核心收录：

学科分类：0820[工学-石油与天然气工程] 08[工学] 082002[工学-油气田开发工程] 

基　　金：financially supported by the Scientific Research Startup Foundation of Xinjiang University(No.620312377) the National Science and Technology Major Project of China(No.2016ZX05053-013) 

主　　题：Foam flooding Permeability ratio 2D/3D models Heterogeneity Enhanced oil recovery 

摘      要：The formation heterogeneity is considered as one of the major factors limiting the application of foam *** this paper,influences of formation properties,such as permeability,permeability distribution,interlayer,sedimentary rhythm and 3D heterogeneity,on the mobility control capability and oil displacement efficiency of foam flooding,were systematically investigated using 2D homogeneous and 2D/3D heterogeneous models under 120°C and salinity of 20×10~4 mg/*** flow resistance of foam was promoted as the permeability increased,which thus resulted in a considerable oil recovery *** the scenario of the vertical heterogeneous formations,it was observed that the permeability of the high-permeable layer was crucial to foam mobility control,and the positive rhythm appeared favorable to improve the foam flooding *** additional oil recovery increased to about 40%.The interlayer was favorable for the increases in mobility reduction factor and oil recovery of foam flooding when the low permeability ratio was *** the 3D heterogeneous formations,foam could efficiently adjust the areal and vertical heterogeneity through mobility control and gravity segregation,and thus enhancing the oil recovery to 11%–14%.The results derived from this work may provide some insight for the field test designs of foam flooding.