极复杂断块油藏交替采油提高采收率的可视化物理模拟  

Visual Physical Simulation on Enhanced Oil Recovery by Alternating Oil Production in Extremely Complex Fault Block Reservoirs

作　　者：崔传智[1] 巩受奖 张戈[2] 陈博 刘中伟[2] CUI Chuan-zhi;GONG Shou-jiang;ZHANG Ge;CHEN Bo;LIU Zhong-wei(College of Petroleum Engineering,China University of Petroleum (East China),Qingdao 266580,China;Xianhe Oil Production Plant,Shengli Oilfield Company of SINOPEC,Dongying 257068,China)

机构地区：[1]中国石油大学(华东)石油工程学院,青岛266580 [2]中石化胜利油田分公司现河采油厂,东营257068

出　　处：《科学技术与工程》2019年第2期80-85,共6页Science Technology and Engineering

基　　金：国家重大科技专项(2016ZX05011002-003)资助

摘　　要：极复杂断块油藏的断层、储层非均质性和边水存在等因素均会影响其最终的采收率。为了弄清各因素之间的影响作用,利用可视化动态仿真驱替装置进行水驱油的物理模拟实验,透过可视化的实验图像可以直观地观察到剩余油的分布规律及流线变化特征。为此共设计了6组不同的实验方案,研究油藏储层非均质性以及边水存在时对水驱油效果的影响。结果表明:模型在一注两采稳定注水开发时会形成井间滞留区,这部分"死油区"可通过交替采油的方式重新动用;同时对三种非均质情况下的渗透率级差组合进行了评价;当存在边水时,流线分布较之前有很大的差异,对比不同的实验方案发现均质边水模型的采出程度更大。通过物理模拟地下流体的流动特征,为极复杂断块油藏剩余油的有效开发提供基础。For complex fault-block reservoirs,the parameters such as the fault,reservoir heterogeneity and the existence of side water can influence oil field recovery.In order to obtain the effect of various factors on recovery,the visualized dynamic simulation displacement device was used to carry out the physical simulation experiment of displacement.The remaining oil distribution and streamline variation can be observed directly through the visualized experimental images.Six different experimental schemes have been designed to study the effect of reservoir heterogeneity and the existence of edge water on displacement.The results show that the inter-well retention area,which called“dead oil area”,will be formed during the development of stable water injection in the one injection-two production pattern,and it can be reactivated in regulation of alternative oil production.At the same time,the effects of permeability contrast between three different heterogeneous conditions on the recovery were analyzed.The streamlines distribution is quite different from before the edge water exists in the model.Compared with different experimental schemes,the recovery of the homogeneous model with edge water is higher.The research provides a basis for the effective development of the remaining oil in the extremely complex fault block reservoirs.

关 键 词：极复杂断块油藏 剩余油 流线 一注两采 交替采油 可视化物理模拟 

分 类 号：TE347[石油与天然气工程—油气田开发工程]