石油钻采工艺2024，Vol.46Issue(5)：569-585,17.DOI:10.13639/j.odpt.202411020
天然气井生产数据修正方法提高环雾流模型临界携液流量预测准确率
Method for correcting production data of natural gas wells to improve the accuracy of predicting the critical liquid carrying capacity of the annular mist flow model
刘楠楠 1曹小建 1折利军 2周明明 2刘伟 1翟晓鹏3
作者信息
- 1. 常州大学石油与天然气工程学院,江苏常州
- 2. 长庆油田分公司第一采油厂采油工艺研究所,陕西延安
- 3. 油气钻采工程湖北省重点实验室(长江大学),湖北武汉
- 折叠
摘要
Abstract
To address the issue of low prediction accuracy in wellbore liquid accumulation,it is crucial to enhance the precision of predicting the critical liquid loading rate in gas wells.This study,based on the annular flow liquid film theory,conducted a force analysis of the gas-liquid two-phase flow in the wellbore and established a critical liquid-carrying flow rate prediction model that comprehensively considers the impact of fluid flow state and liquid film thickness on friction coefficients.The newly developed model was adjusted using actual production data,and the adjustment results were verified with field data from the gas field.The results show that the adjusted model achieved a 100%prediction accuracy for liquid accumulation,with the prediction critical value error reduced to 0.21,a 47.5%reduction in prediction error compared to existing models.Additionally,the new model exhibited the lowest average relative error and root mean square error,improving by 89.7%compared to the prediction effects of existing models.A comprehensive comparison indicates that the new model outperforms other models in terms of prediction accuracy.The method of adjusting the liquid accumulation model with production data compensates for the discrepancies between theoretical models and actual production,enhancing the prediction accuracy and applicability of the model and resolving the challenge of inaccurate prediction of liquid accumulation in natural gas wells.关键词
天然气井/气井积液/临界携液流量/液膜模型/摩擦系数/模型修正/油气资源/工程技术Key words
Anatural gas well/Liquid loading in gas well/Critical liquid carrying flow rate/Liquid film model/Friction coefficient/Model correction/Oil and gas resources/Engineering Technology分类
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刘楠楠,曹小建,折利军,周明明,刘伟,翟晓鹏..天然气井生产数据修正方法提高环雾流模型临界携液流量预测准确率[J].石油钻采工艺,2024,46(5):569-585,17.
