摘要
大庆长垣扶余致密油层的YP井初期产量递减快,后期产量递减缓慢,常觃产量递减分析方法已不再适用。基于致密油井生产动态特征分析,连续计算各类地层条件和边界条件下的致密油生产数据递减率,根据递减率所呈现的幂律行为廸立幂律指数产量递减模型。对于模型中的初始产量、无穷递减率、初始递减率和递减指数迚行敏感性分析。利用该幂律指数产量递减模型对YP井的产量迚行分析,得到较好的拟合结果,开给出预测产量和最终累计产量。该方法为大庆长垣扶余致密油层油井产量递减分析提供了科学依据。
The initial production of tight oil well YP in Daqing Changyuan Fuyu tight oil layer decreased rapidly,and the production declined slowly in the later stage.The conventional production decline analysis method is not suitable.Based on the production characteristics of tight oil wells,the decline rate of tight oil production data were continuously calculated under various stratum conditions and boundary conditions,and a power law exponential production decline model was established based on the power law behavior presented by the decline rate,the method of power law exponential decline analysis was established.Sensitivity analysis was performed based on initial production,infinite decline rate,initial decline rate,and decline index in the established model.The power law exponential decline model was used to analyze the production of tight oil well YP,and the good matching results were obtained.The production forecast and final cumulative production were carried out.This method provides a scientific basis for the analysis of the production decline of the oil wells in the Fuyu tight reservoir of Daqing Changyuan block.
作者
徐国涵
尹洪军
邢翠巧
XU Guo-han;YIN Hong-jun;XING Cui-qiao(Department of Petroleum Engineering,Northeast Petroleum University,Daqing Heilongjiang 163318,China;Key Laboratory of Enhanced Oil Recovery of Ministry of Education,Northeast Petroleum University,Daqing Heilongjiang 163318,China)
出处
《当代化工》
CAS
2020年第7期1424-1427,共4页
Contemporary Chemical Industry
基金
国家科技重大专项,致密油体积压裂试井方法研究(项目编号:2017ZX05071005)
关键词
致密油井
递减率
产量递减分析
曲线拟合
产量预测
Tight oil well
Decline rate
Production decline analysis
Curve matching
Production prediction
作者简介
徐国涵(1995-),男,河北省沧州市人,硕士研究生,研究方向:油气渗流理论与应用。E-mail:1219973727@qq.com。
