页岩气笼套式节流阀两相流动预测模型生产数据优化  

Production Data Optimization of a Two-phase Flow Prediction Model for Shale Gas Cage Type Throttle Valve

作　　者：于洋 王威林 唐靖然 刘辉 董学莲 王樵渚 YU Yang;WANG Weilin;TANG Jingran;LIU Hui;DONG Xuelian;WANG Qiaozhu(Exploration&Development Research Institute of PetroChina Southwest Oil and Gas Field Company,Chengdu 610017,China;State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu University of Technology,Chengdu 610059,China;State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]中国石油西南油气田公司工程技术研究院,成都610017 [2]成都理工大学油气藏地质及开发工程国家重点实验室,成都610059 [3]西南石油大学油气藏地质及开发工程国家重点实验室,成都610500

出　　处：《机械工程师》2025年第1期73-77,81,共6页Mechanical Engineer

基　　金：四川省重点研发计划(2022YFG0244)。

摘　　要：针对笼套式节流阀两相流动模型数据分析中存在的数据拟合工作量大、精度差等问题,开展了基于现场数据驱动的笼套式节流阀两相流动预测模型研究。通过气液两相嘴流的临界压力比值判断气井的临界状态,根据井口油压、套压、节流阀开度等实际工况的生产数据,提出了多元数据拟合方法并编制专用计算软件,实现了快速计算出等效油嘴直径的功能;建立笼套式结构节流阀的气液两相流动优化模型,预测精度高达85%以上;通过分析临界状态节流阀拟合数据与亚临界状态节流阀拟合数据,掌握笼套式节流阀的气液两相流动规律。该研究结果对改善目前页岩气井的生产与开发效果起着关键性的作用,提高了气田的开发水平,提升了其经济和社会效益。Aiming at the problems of large data fitting workload and poor accuracy in the data analysis of the two-phase flow model of the cage type throttle valve,this paper researches on the two-phase flow prediction model of the cage type throttle valve driven by on-site data.The critical state of a gas well is determined by the critical pressure ratio of the gas-liquid two-phase nozzle flow.Based on production data from actual operating conditions such as wellhead oil pressure,casing pressure,and throttle valve opening,a multivariate data fitting method is proposed and a dedicated calculation software is developed,with which the equivalent nozzle diameter can be calculated quickly.Additionally,an optimization model for the gas-liquid two-phase flow of a cage type throttle valve is established,with a prediction accuracy of over 85%.By analyzing the fitting data of the critical state throttle valve and the sub critical state throttle valve,the gas-liquid two-phase flow law of the cage type throttle valve can be obtained.The research results of this paper play a key role in improving the production and development effectiveness of shale gas wells,improving the development level of gas fields,and enhancing their economic and social benefits.

关 键 词：井下节流技术 笼套式节流阀 等效油嘴模型 多元数据拟合 

分 类 号：TE934[石油与天然气工程—石油机械设备]