Remaining oil distribution characteristics in an oil reservoir with ultra-high water-cut

作     者：Hongmin Yu Youqi Wang Li Zhang Qingxin Zhang Zhenhai Guo Benzhe Wang Tao Sun 

作者机构：SINOPEC Petroleum Exploration and Development Research InstituteBeijing100083China Shengli Oil Production PlantSINOPEC Shengli Oilfield BranchDongyingShandong257051China 

出 版 物：《Energy Geoscience》 (能源地球科学（英文）)

年 卷 期：2024年第5卷第1期

页      面：219-223页

核心收录：

学科分类：081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：funded by SINOPEC Science and Technology Project P18080 by National Energy Administration Research and Development Center Project 

主　　题：Ultra-high water-cut High water injection multiple Four-points and five-types Numerical simulation Remaining oil distribution 

摘      要：An accurate mapping and understanding of remaining oil distribution is very important for water control and stabilize oil production of mature oilfields in ultra-high water-cut ***,the Tuo-21 Fault Block of the Shengtuo Oilfield has entered the stage of ultra-high water cut(97.2%).Poor adaptability of the well pattern,ineffective water injection cycle and low efficiency of engineering measures(such as workover,re-perforation and utilization of high-capacity pumps)are the significant problems in the ultra-high water-cut *** order to accurately describe the oil and water flow characteristics,relative permeability curves at high water injection multiple(injected pore volume)and a semiquantitative method is applied to perform fine reservoir simulation of the Sand group 3e7 in the *** accurate reservoir model is built and history matching is *** distribution characteristics of remaining oil in lateral and vertical directions are quantitatively simulated and *** results show that the numerical simulation considering relative permeability at high injection multiple can reflect truly the remaining oil distribution characteristics after water flooding in an ultrahigh water-cut *** distribution of remaining oil saturation can be mapped more accurately and quantitatively by using the‘four-points and five-types’classification method,providing a basis for potential tapping of various remaining oil types of oil reservoirs in late-stage of development with high water-cut.