Numerical Simulation Research on Locations Optimization of Horizontal Well to Exploit Remaining Oil of Lateral Accretion Interbed after Polymerflooding
Conceptual models of lateral accretion interbed (the point bar lateral sandbody model contains three lateral accretion interbed.And the lateral accretion interbeds extends to two-thirds of reservoir thickness)is builded making use of numerical simulation software Eclipse.The effect of injection water on water drive recovery is analysised.The location of remaining oil enrichment is also determined.Horizontal well is placed in remaining oil enrichment and its vertical direction and horizontal hole section are optimization.Horizontal well and vertical well are combined to exploit residual oil.Results indicates that: Injectiong water in the direction of lateral accretion interbed can obtain higher water drive recovery than in the opposite direction.The closer to top the horizontal well is, the greater recovery enhancement values is.Horizontal hole section starts from the location of four-fifths of lateral sandbody Ⅰ left and terminats nine-tenths of lateral sandbody Ⅲ, where the recovery is highest.Horizontal well is placed after vertiacal well injecting polymer in which recovery can increase 9.8%.According to numerical simulation optimization results, we have made a physical model with lateral accretion interbeds to do experiments.Numerical simulation results agree with experimental results.Hence horizontal and vertical well uinting together can exploit the remaining oil of lateral accretion interbed effectively.
lateral accretion interbed remaining oil polymerflooding horizontal well numerical simulation
Taoping Chen Chao Jiang Lili Wang
The key laboratory of enhancing oil and gas recovery of educational ministry, Northeast Petroleum Un Northeast Petroleum University, Daqing, China
国际会议
湖北荆州
英文
460-464
2013-05-18（万方平台首次上网日期，不代表论文的发表时间）