低渗透油田油井流入动态曲线特征的仿真研究  

Simulation of Curve Characteristics of Well Inflow Performance Relationship of Low Permeable Oil Field

作　　者：刘东升[1] 董世民[2] 李玉[2] 姜喜明[3] 

机构地区：[1]大庆油田采油四厂,黑龙江大庆163511 [2]燕山大学机械工程学院,河北秦皇岛066004 [3]大庆油田采油六厂,黑龙江大庆163154

出　　处：《系统仿真学报》2007年第18期4302-4304,共3页Journal of System Simulation

基　　金：中国石油天然气股份公司项目(020114-2-1)

摘　　要：假设油井流动系数为二次抛物线函数,建立了包含3个待定系数的新型通用油井流入动态方程。根据3点或更多点稳定工作制度下产量与对应流压的测试数据,建立了确定3个待定系数的非线性代数方程组。新型油井流入动态方程不仅包括了目前所有经典的流入动态方程,而且也包含了具有拐点的流入动态方程。建立了油井流入特性曲线存在拐点的判别条件与最大产量所对应合理流压的计算方法。应用新型油井流入特性曲线指导油井抽汲参数设计,确保油井在合理流压下生产,可以实现油井产量最大化,提高低渗透油田开发的经济效益。The functional relation of flowing coefficient with flowing pressure was described as a parabolic function, and a new type of inflow performance relationship which contained 3 undetermined coefficients was setup, According to test results of three or more than three points of flowing pressure and corresponding liquid output, the regression equations that contained the 3 undetermined coefficients were setup by the least squares method rule, and the undetermined coefficients were solved by the optimization method. The new type of lPR includes both the classical ones that are used at present and a particular type of one that is of inflection point. The relationship equation that is used to distinguish whether or not the inflow performance relationship is of inflection point was established, and the formula of calculating the reasonably flowing pressure at which the liquid output can get the maximal value is setup. When the new 1PR is used to direct the design of suction parameters of rod pumping wells, the oil wells can run at the reasonably flowing pressure and the maximal liquid output, which is of important significance to raising economic effects of low permeability oil field.

关 键 词：低渗透油田 流入动态 曲线特征 拐点 合理流压 最大产量 参数设计 

分 类 号：TE833[石油与天然气工程—油气储运工程]