陆梁油田J_2x_4底水油藏数值模拟研究

STUDY ON NUMERICAL SIMULATION OF J_2X_4 RESERVOIR WITH BOTTOM WATER IN LULIANG OILFIELD

陆梁油田西山窑组J2 x4油藏为一低幅度构造、砂泥岩薄互层、油水关系复杂的底水油藏。针对该油藏开发初期含水上升快的现状 ,利用数值模拟方法 ,对合理注采比、合理注水时机、合理射开程度等油藏的合理技术政策进行了深入的研究。模拟结果确定合理注采比为 0 .7,1 .5年后注水和 5 0 %的射开程度可获得较高的采出程度。

The Xishanyao J_2x_4 reservoir in Luliang oilfield is a typical reservoir with bottom water, characterized by low amplitude structure, sand-mud laminated layers and complicated oil-water relationship. To improve the status that the water cut is raising rapidly, at the early stage of development, numerical simulation method is utilized to study the reasonable technical policies, such as ratio of water injection and recovery, timing of water injection and perforating level. The simulation results show that the reasonable injection-production ratio is 0.7, that water should be injected after developing for one and half years, and that 50% perforating level is optimal. Such results have a good guidance for the development of this reservoir.