强边底水油藏水驱开发效果评价

Evaluation of Water Flooding Development of Strong-edge and Bottom Water Reservoir

针对目前水驱开发评价方法主要是评价油田整体开发效果,很难对具体注水井的注水效率进行评价,以及强边底水油藏中油井产水的主要来源等问题。基于井间油水动态的连通性计算模型,结合油田地质参数和实际生产数据进行自动历史拟合。示踪剂分析验证了该模型具有很好的可靠性。采用该模型计算注水井注水劈分系数,确定注采优势通道以及注水井驱油效率。该模型同时也可以计算注水井和边底水对油井产油产水贡献百分比。实例油田应用表明,该模型可靠性很好,与示踪剂测试结果吻合,计算结果能很好地评价注水井的注水效率。

It is very difficult to evaluate the water injection efficiency of the specific injection well and the main source of water production of production wells in the strong edge and bottom water oil reservoir. In view of the current waterflooding development evaluation method is mainly to evaluate the overall development effect of oil field,it is difficult to evaluate the water injection efficiency of a specific injection well,as well as the main source of oil production in strong edge water reservoirs. Tracer analysis shows that the model has good reliability. The model is used to calculate the water injection splitting coefficient and determine the dominant channel of injection and production as well as the efficiency of water injection wells. The model can also calculate the contribution of water injection wells and edge water to the oil production of percentage. The application of this model in oil field shows that the model has good reliability and is in good agreement with the tracer test results,which can well evaluate the water injection efficiency of injection wells.