Numerical Simulation Research on Locations Optimization of Horizontal Well to Exploit Remaining Oil of Lateral Accretion Interbed after Polymerflooding

Abstract:

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 .

• Periodical: Applied Mechanics and Materials (Volume 318)
• Pages: 460-464
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.318.460
• Online since: May 2013
• Authors: Tao Ping Chen, Chao Jiang, Li Li Wang
• Keywords: Horizontal Well, Lateral Accretion Interbed, Numerical Simulation, Polymer Flooding, Remaining Oil

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