底水潜山油藏出水规律研究

A STUDY ON WATER PRODUCING RULE OF BURIED HILL RESERVOIR WITH BOTTOM WATER

建立了井组模型 ,研究了布井方式和井距对底水潜山油藏开发过程中油井产水的影响 ;分析了不同注水方式、采液强度、注水和调堵时间情况下油藏开发动态和出水规律 ;综合分析了单井和井组模型的生产特征 ,导出裂缝型潜山油藏含水率上升曲线的函数表达式 ,在统计的基础上 ,利用多元回归分别给出了单井和井组含水率上升曲线系数与影响因素的关系式 ,该式包括了地质及工艺参数 ,并将裂缝和基质的参数分开 ,计算结果将更为准确可靠 。

A well group numerical simulation to naturally fra ctured buried hi ll reservoir was carried out for studying the influence of well pattern and spac e on water producing during development process. Through the sensitivity analyse s of geologic and technology parameters as fracture permeability, occasion water injection and water plugging etc., the main water cut escalating property is co ncluded. According to the comprehensive result of single well and well group mod el, the function form of the relationship between water cut and recovery percent of reserves is found. The relational expressions between the coefficients and r eservoir parameters are given using the method of multivariate regression. These expressions include geologic and technology parameters and separate the fractur e and matrix. Thus its calculation result will be more accurate and reliable.