摘要
为预防管道低洼处积液带来的生产安全问题,采用最小压降梯度模型和双流体模型确定临界携液流速,通过单因素实验模拟不同影响因素下的临界携液流速,并通过均匀实验设计获取因素间的交互作用强度,最终利用随机森林模型完成非线性数据回归和现场结果验证。研究结果表明,压力与临界携液流速呈幂函数关系,温度、管径与临界携液流速呈线性正相关,含水率、上倾角与临界携液流速呈对数关系;单因素中上倾角对临界携液流速的影响最大,其次为含水率和系统压力,二次项因素中系统压力和上倾角的交互作用最强;在20口气井集输管道的验证中,随机森林模型的符合率为90%,陈建磊模型、王旭模型的符合率分别为55%、65%,证明了随机森林模型可以用于临界携液流速的预测和判断。
In order to reduce the production safety problems caused by liquid accumulation in low-lying areas of pipelines,the minimum pressure drop gradient model and two-fluid model were used to determine the critical liquid carrying velocity.The critical liquid carrying velocity under different influencing factors was simulated by single-factor experiments,and the interaction intensity between factors was obtained by uniform experimental design.Finally,the random forest model was used to complete nonlinear data regression and field result verification.The results show that the relationship between pressure and critical liquid carrying velocity is a power function;the temperature and pipe diameter are linearly and positively correlated with critical liquid carrying velocity,and the water content and top rade share a logarithmic relationship with critical liquid carrying velocity.In terms of a single factor,the top rade has the greatest influence on the critical liquid carrying velocity,followed by water content and system pressure,and the interaction between system pressure and top rade is the strongest in terms of the quadratic factor.In the verification of gathering and transportation pipelines of 20 gas wells,the coincidence rate of the random forest model is 90%,and the coincidence rates of models by Chen Jianlei and Wang Xu are 55% and 65% respectively,which proves that random forest model can be used to predict and judge the critical liquid carrying velocity.
作者
秦虹
赵紫汐
姚佳杉
许开志
李盼
QIN Hong;ZHAO Zixi;YAO Jiashan;XU Kaizhi;LI Pan(No.1 Oil Production Plant of Huabei Oilfield Company,CNPC,Renqiu 062552,China;No.2 Oil Production Plant of Huabei Oilfield Company,CNPC,Bazhou 065700,China;No.5 Oil Production Plant of Huabei Oilfield Company,CNPC,Xinji 052360,China)
出处
《石油工程建设》
2024年第1期31-37,共7页
Petroleum Engineering Construction
关键词
临界携液流速
最小压降梯度
随机森林
上倾角
OLGA
critical liquid carrying velocity
minimum pressure drop gradient
random forest
top rade
OLGA
