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随着井网完善程度降低,断块地层能量供应不合理,潜力区地层压降逐年增大,影响了莱36单元的水驱开发效果。通过阐述完善注采井网的必要性和可行性,提出了在对断块油藏特性、注采关系再认识的基础上,通过大修、转注、调剖等手段,完善注采井网,提高水驱控制程度。通过平面上改向注水,纵向上强化潜力层注水,提高莱36单元注水有效波及体积,改善水驱效果。
With the improvement of the well pattern, the energy supply to the fault block is unreasonable, and the pressure drop in the potential area increases year by year, affecting the water flooding development effect of Lai 36 unit. Based on the necessity and feasibility of perfecting the well pattern of injection and production, this paper puts forward that based on the understanding of the characteristics of fault block reservoir and the relationship between injection and production, the well pattern of injection and production well is improved by means of overhaul, transfer injection and profile control Degree of water drive control. Through the direction of the plane to the water injection, vertical reinforcement layer of potential water injection to improve effective flooding Lai Unit 36 volume, improve the water flooding effect.