存在部分连通断层的线性水侵油藏试井解释新模型

被断层隔开油藏中常常含有有限或无限的线性水体,由于断层连通性认识不清使得人们常常对水体的类型判断错误。现有油藏开发人员对存在部分连通断层的油藏试井解释模型研究仅针对均质油藏、复合油藏、双重介质油藏,而并没有对线性水侵油藏进行研究。通过引入界面表皮的概念,将部分连通断层视为一个无限薄的表皮边界,运用渗流力学、数学物理方法、计算数学基础理论,建立了存在部分连通断层的线性水侵油藏试井解释新模型,求得模型的Laplace空间解,利用计算机编程绘制了相应的典型曲线并对曲线的影响因素进行了分析,实例应用效果很好。

NEW WELL TESTING MODEL FOR THE LINEAR WATER INFLUX OIL RESERVOIR WITH PARTIALLY COMMUNICATED FAULTS

There are often the finite or infinite linear water bodies in the oil reservoir which is separated by the fault,because of the unclear understanding of the connectivity of the fault,it is often wrong to judge the types of the water bodies.The current reservoir developers have only aimed at the homogeneous reservoir,composite reservoir and dual-medium reservoir,and there are no researches on the linear water influx reservoir.By introducing the concept of boundary skin,the partially connected faults are regarded as the infinitesimal-thickness skin boundary,the new well testing model for the linear water influx oil reservoir with partially connected fault was established based on the theory of the flow dynamics,mathematical-physical method and basic theory of the computing mathematics,the spacial solutions were sought for the model,and furthermore,with the help of the compiled computer programs,the corresponding typical curves were drawn,and moreover the influencing factors were analyzed.In the end,the model was applied in the practice.