摘要
为评价特高含水油田井间连通性的大小,针对目前电容电阻模型评价特高含水油田井间连通性不准确的问题,考虑电容电阻模型中采液指数的变化,利用无因次采液指数计算方法,确定了产液量递推式中的时间常数,建立了新的井间动态连通性模型,并利用最优化方法求解得到井间连通系数,将目前电容电阻模型的适用范围扩展到油田整个开发阶段。实例应用表明,改进模型的计算结果与示踪剂结果吻合程度更高,可以用来识别特高含水油田井间连通性。
In view of the inaccuracy of the existing capacitance-resistance model for evaluating the inter-well connectivity of ultra-high water-cut oilfields, considering the variation of the liquid production index in the capacitance-resistance model, the time constant in the reeursive formula of liquid production was determined by using the calculation of dimensionless liquid production index, a new inter-well dynamic connectivity model was established, and the optimal interwell connectivity coefficient was obtained by solving the model, which extends the application of the existing capacitance-resistance model to the whole development stage of the oilfield. The practical application shows that the calculation result of the improved model is in better agreement with the tracer result,and it can be used to identify the inter-well connectivity of ultra-high water cut oilfields.
作者
邹威
窦宏恩
秦国省
孙丽丽
吕考考
ZOU Wei;DOU Hongen;QIN Guosheng;SUN Lili;LYU Kaokao(Research Institute of Petroleum Exploration and Development,CNPC,Beijing 100083,China;School of Energy Resources,China University of Geosciences（Beijing）,Beijing 100083,China)
出处
《西安石油大学学报（自然科学版）》
CAS
北大核心
2018年第6期49-54,共6页
Journal of Xi’an Shiyou University（Natural Science Edition）
基金
国家科技重大专项"老油田二三结合潜力评价和重点区块实验方案研究"(2016ZX05010-005)"
关键词
井间连通性
电容电阻模型
特高含水油田
无因次采液指数
interwell connectivity
capacitance-resistance model
extra-high water-cut oilfield
dimensionless liquid production index
