Study on Injection-Production System Adjustment of Fault Block Reservoir Based on Equilibrium Displacement

作者：Ming Yang,Cunliang Chen,Yu Wang,Xiaohui Wu,Dong Ma

摘要：This paper proposed a method of injection-production system adjustment to solve the problem that the water flooding effect was restricted because of the horizontal and vertical contradictions during the development process of fault block reservoirs. Considering the heterogeneity of reservoir, the Buckley-Leverett water flooding theory was applied to establish the relationship between the recovery and cumulative water injection. In order to achieve the goal of vertically balanced recovery of each section, the calculation method of vertical sectional injection allocation was proposed. The planar triangular seepage unit was assumed and sweep coefficients of different oil-water distribution patterns were characterized using multi-flow tube method. In order to balance and maximize the plane sweep coefficient, the calculation method of plane production system optimization was obtained. Then the injection-production system stereoscopic adjustment method based on equilibrium displacement was proposed with vertical sectional injection allocation and plane production system optimization. This method was applied to injection and production adjustment of BZ oilfield in southern Bohai. The effect of water control and oil increase was obvious. This method can greatly improve the effect of water flooding of offshore fault block reservoirs with the adjustment of injection-production system.

发文机构：Bohai Petroleum Research Institute

关键词：FaultBlockReservoirEquilibriumDisplacementVerticalSectionalInjectionAllocationPlanarProductionSystemOptimizationAdjustmentofInjection-ProductionSystemFault Block ReservoirEquilibrium DisplacementVertical Sectional Injection AllocationPlanar Production System OptimizationAdjustment of Injection-Production System

分类号： F42[经济管理—产业经济]