圆形封闭油藏分层合采油井产能优化研究

针对多层圆形封闭非均质油藏多层合采的情形,在前人研究的基础上,给出了在各层供给半径不相等的情况下,油井定产生产或定压生产时的井壁压力、各层层面流量的计算公式和计算方法.通过一个两层油藏的算例,采用Stehfest数值反演方法分别计算了各油层层面流量的变化,并就各层供给半径的大小对油井产能的影响展开分析和讨论,该方法对矿场圆形封闭多层合采油层的配产配注、动态预测以及开发调整具有重要的指导意义.

The Optimized Analysis and Study of the Oil Well Productivity of the Separate Zone Whole Production in Circular Sealed Reservoir of Stratified Layers

Based on the separate zone whole production of the exploitation of circular sealed reservoir,the paper presented the formula and the methods of the wall of a well pressure,flux under the conditions of the constant well bore pressure or constant well bore production and different supply radius.The numerical computation of two layers which is made by Stehfest numerical inversion computed separately the variety of the wall of the well flux and analyzed and discussed different supply radius which influences oil well productivity.The methods can instruct the allocation of production and injection rates,dynamic forecast and development adjustment of the separate zone whole production in circular sealed reservoir of stratified layers.