油井采油指数及地层压力计算新方法  

A New Method of Determining Productivity Index and Reservoir Pressure of Oil Well.

作　　者：张广东[1] 刘建仪[1] 宋阳 杨友国 彭远进[1] 

机构地区：[1]"油气藏地质及开发工程"国家重点实验室.西南石油大学,四川成都610500 [2]中海石油基地集团采油技术服务公司,天津塘沽300452

出　　处：《油气井测试》2006年第3期9-10,13,共3页Well Testing

基　　金：国家自然科学基金项目资助(编号50374057)。

摘　　要：根据拟稳态下流体能量平衡原理,建立了一个新的油井采油指数及地层压力计算的数学模型。新模型将现场地面生产动态数据与地下未知地层参数相关联,建立目标函数,大大提高了模型的实用性。引入非线性最小二乘法原理及最速下降方法,运用VB计算机语言编制相应程序进行求解。通过实例分析表明,模型计算结果与实际测试结果相关性好,取得了良好的效果,可用于生产实践。Based on the theory of energy balance for liquid at pseudo-steady state, the paper establishes a new mathematic method of determining productivity index and reservoir pressure of oil wells that creates the objective function by using correspondence of surface performance data and unknown formation parameters which increases the practicability of the model greatly. The method of fastest optimizing algorithm and nonlinear regression analysis is utilized to seek answer by using VB computer language. Analysis of field examples shows that the result is a reliable which could be used in practice.

关 键 词：采油指数 地层压力 计算 方法 产能测试 拟稳态 

分 类 号：TE271[石油与天然气工程—油气井工程] TE15