首页|Inter-stage performance and energy characteristics analysis of electric submersible pump based on entropy production theory

Inter-stage performance and energy characteristics analysis of electric submersible pump based on entropy production theory

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The electric submersible pump(ESP)is a crucial apparatus utilized for lifting in the oil extraction process.Its lifting capacity is enhanced by the multi-stage tandem structure,but variations in energy charac-teristics and internal flow across stages are also introduced.In this study,the inter-stage variability of energy characteristics in ESP hydraulic systems is investigated through entropy production(EP)analysis,which incorporates numerical simulations and experimental validation.The EP theory facilitates the quantification of energy loss in each computational subdomain at all ESP stages,establishing a corre-lation between microscopic flow structure and energy dissipation within the system.Furthermore,the underlying causes of inter-stage variability in ESP hydraulic systems are examined,and the advantages and disadvantages of applying the EP theory in this context are evaluated.Consistent energy charac-teristics within the ESP,aligned with the distribution of internal flow structure,are provided by the EP theory,as demonstrated by our results.The EP theory also enables the quantitative analysis of internal flow losses and complements existing performance analysis methods to map the internal flow structure to hydraulic losses.Nonetheless,an inconsistency between the energy characterization based on EP theory and the traditional efficiency index when reflecting inter-stage differences is identified.This inconsistency arises from the exclusive focus of the EP theory on flow losses within the flow field,dis-regarding the quantification of external energy input to the flow field.This study provides a reference for the optimization of EP theory in rotating machinery while deeply investigating the energy dissipation characteristics of multistage hydraulic system,which has certain theoretical and practical significance.

Electric submersible pump(ESP)Entropy production theoryEnergy characteristicsInter-stage differences

Hui Wang、Yang Yang、Bin Xi、Wei-Dong Shi、Chuan Wang、Lei-Lei Ji、Xiang-Yu Song、Zhao-Ming He

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College of Hydraulic Science and Engineering,Yangzhou University,Yangzhou 225009,Jiangsu,China

College of Hydraulic Science and Engineering,Yangzhou University,Yangzhou,225009,Jiangsu,China

College of Electrical and Mechanical Engineering,Nanchang Institute of Technology,Nanchang,330044,Jiangxi,China

Zhejiang Zhenxing Petrochemical Machinery Co.,Ltd.,Ruian,325204,Zhejiang,China

College of Mechanical Engineering,Nantong University,Nantong,226019,Jiangsu,China

National Research Center of Pumps,Jiangsu University,Zhenjiang 212013,Jiangsu,China

Department of Mechanical Engineering of Texas Tech University,Lubbock,79411,TX,USA

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中国博士后科学基金中国博士后科学基金Cooperative Research Project of the Ministry of Education's"Chunhui Program"江苏省自然科学基金国家自然科学基金

2023M7329792022TQ0127HZKY20220117BK2022058752309112

2024

10.1016/j.petsci.2023.10.032

石油科学(英文版)
中国石油大学（北京）

石油科学(英文版)

EI
影响因子：0.88
ISSN：1672-5107
年,卷(期)：2024.21(2)
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