Chengcheng Luo, Lirong Gao, Yonghui Liu, Chuan Xie, Changqing Ye, Jianying Yang, Zhongbo Liu
{"title":"A modified model to predict liquid loading in horizontal gas wells","authors":"Chengcheng Luo, Lirong Gao, Yonghui Liu, Chuan Xie, Changqing Ye, Jianying Yang, Zhongbo Liu","doi":"10.1115/1.4062504","DOIUrl":null,"url":null,"abstract":"\n Liquid loading is inevitable during mature gas well production, leading the liquids to accumulating at the bottomhole, leading to additional pressure loss. Accurately predicting the liquid-loading initiation is crucial to gas well production optimization. Significant effects have been made to model liquid loading behavior. However, few mechanistic models are capable of easily and accurately tackling the complicated non-uniform liquid-film distribution in the slanted section of horizontal wells. Based on liquid-film inversion, this study developed a simple and comprehensive model to calculate liquid loading initiation for horizontal gas wells. First, the models for film thickness and critical velocity in the vertical pipe are developed. Then, considering the effect of inclination and velocity difference in liquid film thickness and liquid holdup distribution between vertical and inclined pipes, the relationship in vertical and inclined pipes between liquid holdup, liquid film thickness and angle correction term is established based on the liquid holdup correlation for horizontal and inclined pipes described in the empirical model developed by Beggs and Brill, so that the thickness of film and the corresponding critical velocity at any inclination can be calculated. Finally, the new modified model has been evaluated against both experimental and field measured data set. In comparison to the Luo et al. model, the proposed model has been proven to be simple, accurate and well performed in predicting the liquid accumulation initiation in horizontal wells.","PeriodicalId":15676,"journal":{"name":"Journal of Energy Resources Technology-transactions of The Asme","volume":" ","pages":""},"PeriodicalIF":2.6000,"publicationDate":"2023-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Energy Resources Technology-transactions of The Asme","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1115/1.4062504","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
引用次数: 1
Abstract
Liquid loading is inevitable during mature gas well production, leading the liquids to accumulating at the bottomhole, leading to additional pressure loss. Accurately predicting the liquid-loading initiation is crucial to gas well production optimization. Significant effects have been made to model liquid loading behavior. However, few mechanistic models are capable of easily and accurately tackling the complicated non-uniform liquid-film distribution in the slanted section of horizontal wells. Based on liquid-film inversion, this study developed a simple and comprehensive model to calculate liquid loading initiation for horizontal gas wells. First, the models for film thickness and critical velocity in the vertical pipe are developed. Then, considering the effect of inclination and velocity difference in liquid film thickness and liquid holdup distribution between vertical and inclined pipes, the relationship in vertical and inclined pipes between liquid holdup, liquid film thickness and angle correction term is established based on the liquid holdup correlation for horizontal and inclined pipes described in the empirical model developed by Beggs and Brill, so that the thickness of film and the corresponding critical velocity at any inclination can be calculated. Finally, the new modified model has been evaluated against both experimental and field measured data set. In comparison to the Luo et al. model, the proposed model has been proven to be simple, accurate and well performed in predicting the liquid accumulation initiation in horizontal wells.
期刊介绍:
Specific areas of importance including, but not limited to: Fundamentals of thermodynamics such as energy, entropy and exergy, laws of thermodynamics; Thermoeconomics; Alternative and renewable energy sources; Internal combustion engines; (Geo) thermal energy storage and conversion systems; Fundamental combustion of fuels; Energy resource recovery from biomass and solid wastes; Carbon capture; Land and offshore wells drilling; Production and reservoir engineering;, Economics of energy resource exploitation