Analysis of flow field characteristics of an intermittent high-efficiency downhole gas-liquid separator

Wang Yang; Cai Meng; Xing Lei; Xiao Maolin; Wang Fei; Li Xinya

doi:10.16085/j.issn.1000-6613.2026-0983

您当前的位置：

首页 >

文章列表页 >

Analysis of flow field characteristics of an intermittent high-efficiency downhole gas-liquid separator

更新时间：2026-08-19

- Analysis of flow field characteristics of an intermittent high-efficiency downhole gas-liquid separator
- Chemical Industry and Engineering Progress (2026)
- 作者机构：
  
  1.东北石油大学提高油气采收率教育部重点实验室, 黑龙江，大庆 163318
  2.大庆油田有限责任公司采油工艺研究院, 黑龙江，大庆 16345313
  东北石油大学机械科学与工程学院，黑龙江大庆 163318
  3.中国海洋石油有限公司生产经营部，北京 100010
- 作者简介：
- 基金信息：
- DOI：10.16085/j.issn.1000-6613.2026-0983
  CLC： TQ051.8
- Received：19 June 2026，
  
  Revised：2026-08-12，
  
  Accepted：13 August 2026，
- 稿件说明：
移动端阅览
Wang Yang, Cai Meng, Xing Lei, et al. Analysis of flow field characteristics of an intermittent high-efficiency downhole gas-liquid separator[J/OL]. Chemical Industry and Engineering Progress, 2026.
DOI：

Wang Yang, Cai Meng, Xing Lei, et al. Analysis of flow field characteristics of an intermittent high-efficiency downhole gas-liquid separator[J/OL]. Chemical Industry and Engineering Progress, 2026. DOI： 10.16085/j.issn.1000-6613.2026-0983.

摘要

为进一步提升抽油机井井下间歇抽吸条件下采出泵的运行性能，缓解高含气工况对举升系统的不利影响，基于旋流分离与重力沉降间歇协同原理，提出一种井下气液旋流重力协同式分离器结构。采用数值模拟与室内实验相结合的方法，开展气液比、冲程及冲次等关键参数对气液分离器的影响研究，建立适用于间歇工况的分离效率评价方法，掌握了不同工况参数条件下气液旋流重力协同式分离器的流场分布特性及分离性能变化规律。结果表明：单冲次内流场呈“上冲程旋流分离、下冲程重力沉降”的周期性特征；气液比增大会显著降低分离效率，冲程与冲次增大使分离效率先升后趋于稳定。最佳运行工况为冲程2.7m、冲次8min⁻¹，气液比50∶1，此时数值模拟效率达到最佳值96.4%。数值模拟与实验分离性能的平均误差为1.99%，两者呈现了较好的一致性。研究为井下间歇工况气液分离装备设计优化提供了理论支撑。

Abstract

To further enhance the operational performance of downhole pumps in oil wells under intermittent pumping conditions and to mitigate the adverse effects of high gas content on the artificial lift system

a novel downhole gas-liquid cyclone-gravity co-operative separator was proposed based on intermittent synergistic mechanism of cyclonic separation and gravitational sedimentation. Numerical simulations and laboratory experiments were conducted to investigate the effects of the gas–liquid ratio

stroke length

and pumping speed on the separator performance. An evaluation method for separation efficiency suitable for intermittent operating conditions was established. The flow field distribution characteristics and the variation patterns of separation performance of the downhole gas-liquid cyclone-gravity

-operative separator under different operational parameters were determined. The results indicated that the flow field within a single stroke exhibited a periodic characteristic

dominated

by cyclonic separation during the upstroke and gravitational sedimentation during the down stroke. An increase in the gas-liquid ratio significantly reduced the separation efficiency

while increases in stroke length and stroke frequency caused the separation efficiency to initially rise and then gradually stabilize. The optimal operating conditions were a stroke length of 2.7 m

a stroke frequency of 8 min

-1

and a gas-liquid ratio of 50∶1

under which the numerical simulation indicated a maximum separation efficiency of 96.4%. The average error between the numerical simulation and the experimental results was 1.99%

indicating a high level of agreement. This study provides a theoretical foundation for the design and optimization of gas-liquid separation equipment intended for down hole intermittent operating conditions.

关键词

Keywords

references

刘合 , 郝忠献 , 王连刚 , 等 . 人工举升技术现状与发展趋势 [J ] . 石油学报 , 2015 , 36 ( 11 ): 1441 - 1448 .

Liu H , Hao Z X , Wang L G , et al . Current technical status and development trend of artificial lift [J ] . Acta Petrolei Sinica , 2015 , 36 ( 11 ): 1441 - 1448 .

贾德利 , 刘合 , 裴晓含 , 等 . 游梁式抽油机井井下泵功图测试方法 [J ] . 石油勘探与开发 , 2015 , 42 ( 1 ): 111 - 116 .

Jia D L , Liu H , Pei X H , et al . Test approach of downhole pump diagram for beam bumping wells [J ] . Petroleum Exploration and Development , 2015 , 42 ( 1 ): 111 - 116 .

蒋明虎 , 汪帆 , 邢雷 , 等 . 井下含气对油水分离管柱流场特性及性能影响 [J ] . 化工学报 , 2025 , 76 ( 7 ): 3361 - 3372 .

Jiang M H , Wang F , Xing L , et al . Influence of gas-containing on flow field characteristics and separation performance in oil-water separation string [J ] . CIESC Journal , 2025 , 76 ( 7 ): 3361 - 3372 .

Karacan C Ö . Performance analysis of oil recovery and CO 2 retention in a greenfield residual oil zone: CO 2 -EOR in Tall Cotton Field (Permian Basin, West Texas, USA) [J ] . Carbon Capture Science & Technology , 2025 , 17 : 100544 .

Peng S B , Xu Y , Bai Q . Failure analysis of a horizontal multi-stage centrifugal pump shaft in an oilfield water injection station [J ] . Engineering Failure Analysis , 2026 , 184 : 110367 .

谢川 , 戚志林 , 严文德 , 等 . 致密砂岩产水气井井下节流携液机理及预测新模型 [J ] . 天然气工业 , 2025 , 45 ( 1 ): 105 - 116 .

Xie C , Qi Z L , Yan W D , et al . Liquid-carrying mechanism and a new prediction model of downhole-throttling gas wells with water production in tight sandstone gas reservoirs [J ] . Natural Gas Industry , 2025 , 45 ( 1 ): 105 - 116 .

张才利 , 刘新社 , 杨亚娟 , 等 . 鄂尔多斯盆地长庆油田油气勘探历程与启示 [J ] . 新疆石油地质 , 2021 , 42 ( 3 ): 253 - 263 .

Zhang C L , Liu X S , Yang Y J , et al . Petroleum exploration history and enlightenment of Changqing Oilfield in Ordos Basin [J ] . Xinjiang Petroleum Geology , 2021 , 42 ( 3 ): 253 - 263 .

高忠献 , 闫暄崎 , 朱瑞彬 , 等 . 高含气油井产液量计量技术研究 [J ] . 计量科学与技术 , 2020 , 64 ( 12 ): 26 - 31 .

Gao Z X , Yan X Q , Zhu R B , et al . Research on liquid production measurement technology for high gas bearing oil wells [J ] . Metrology Science and Technology , 2020 , 64 ( 12 ): 26 - 31 .

Zhu Z Y , Kong H L , Zhu Y Y , et al . Withdrawn: Artificial neural networks—Assisted very-high-cycle corrosion fatigue of completion string [J ] . International Journal of Fatigue , 2025 , 193 : 108796 .

Yang J , Zhang C , Li Y F , et al . Theoretical calculation and experimental investigation on vacuum gasification separation of Tin-lead-antimony ternary alloy [J ] . Separation and Purification Technology , 2025 , 378 : 134549 .

Assar M , Asaadian H , Stanko M , et al . A theoretical and experimental investigation of continuous oil–water gravity separation [J ] . Chemical Engineering Science , 2024 , 298 : 120375 .

Mao L Y , Gui N , Sun Y F , et al . Experimental study and analysis of swirling flow regime transition and separation performance for a new cycloidal vane separator at high gas-liquid velocity ratios [J ] . Progress in Nuclear Energy , 2025 , 187 : 105835 .

Zhang X X , Shen J C , He W , et al . Comparative study of a novel liquid–vapour separator incorporated gravitational loop heat pipe against the conventional gravitational straight and loop heat pipes—Part II: Experimental testing and simulation model validation [J ] . Energy Conversion and Management , 2015 , 93 : 228 - 238 .

Liaposchenko O , Pavlenko I , Nastenko O . The model of crossed movement and gas-liquid flow interaction with captured liquid film in the inertial-filtering separation channels [J ] . Separation and Purification Technology , 2017 , 173 : 240 - 243 .

Lin Z D , Wang Y H , Fu Z , et al . Optimization of mechanical properties and finite element simulation analysis of hollow fiber membranes in gas-liquid membrane separation technology [J ] . Desalination , 2025 , 599 : 118456 .

谢向东 , 王晔春 , 王进芝 , 等 . 低入口含气率下柱状旋流器气液分离特性研究 [J ] . 工程热物理学报 , 2021 , 42 ( 11 ): 2873 - 2878 .

Xie X D , Wang Y C , Wang J Z , et al . Gas-liquid separation characteristics in cylindrical cyclone at low inlet void fraction [J ] . Journal of Engineering Thermophysics , 2021 , 42 ( 11 ): 2873 - 2878 .

Wang Y A , Chen J Y , Yue T , et al . Measurement of thickness and analysis on flow characteristics of upper swirling liquid film in gas-liquid cylindrical cyclone [J ] . Experimental Thermal and Fluid Science , 2021 , 123 : 110331 .

金向红 , 金有海 , 王建军 , 等 . 轴流式气液旋流分离器内气相流场的数值研究 [J ] . 高校化学工程学报 , 2009 , 23 ( 5 ): 748 - 755 .

Jin X H , Jin Y H , Wang J J , et al . Numerical simulation of gas-phase flow field in an axial flow type gas-liquid cyclone separator [J ] . Journal of Chemical Engineering of Chinese Universities , 2009 , 23 ( 5 ): 748 - 755 .

杨兆铭 , 陈建磊 , 何利民 , 等 . 水下旋流气液分离器研究进展 [J ] . 油气储运 , 2019 , 38 ( 8 ): 856 - 862 .

Yang Z M , Chen J L , He L M , et al . Research progress of undersea gas-liquid cyclone separator [J ] . Oil & Gas Storage and Transportation , 2019 , 38 ( 8 ): 856 - 862 .

李铁阳 , 王志华 , 戚亚明 , 等 . 基于管柱式气液旋流分离器的井口多管束分离装置结构优化 [J ] . 数学的实践与认识 , 2022 , 52 ( 10 ): 147 - 160 .

Li T Y , Wang Z H , Qi Y M , et al . Structure optimization of wellhead multistage bundle separator based on gas-liquid cylindrical cyclone [J ] . Mathematics in Practice and Theory , 2022 , 52 ( 10 ): 147 - 160 .

刘合 , 高扬 , 裴晓含 , 等 . 旋流式井下油水分离同井注采技术发展现状及展望 [J ] . 石油学报 , 2018 , 39 ( 4 ): 463 - 471 .

Liu H , Gao Y , Pei X H , et al . Progress and prospect of downhole cyclone oil-water separation with single-well injection-production technology [J ] . Acta Petrolei Sinica , 2018 , 39 ( 4 ): 463 - 471 .

郑春峰 , 杨万有 , 孟熙然 , 等 . 海上高含气井新型井下气液分离器设计及性能评价 [J ] . 中国海上油气 , 2020 , 32 ( 6 ): 128 - 135 .

Zheng C F , Yang W Y , Meng X R , et al . Design and performance evaluation of a novel downhole gas-liquid separator for offshore high gas bearing wells [J ] . China Offshore Oil and Gas , 2020 , 32 ( 6 ): 128 - 135 .

王旱祥 , 任京文 , 于长录 , 等 . 天然气水合物举升管气液分离过程数值模拟与方案优选 [J ] . 石油钻采工艺 , 2023 , 45 ( 2 ): 203 - 210 .

Wang H X , Ren J W , Yu C L , et al . Numerical simulation and optimization of gas-liquid separation process in gas hydrate lifting pipe [J ] . Oil Drilling & Production Technology , 2023 , 45 ( 2 ): 203 - 210 .

李佰涛 , 卢昌荣 , 杨皓凯 , 等 . 高含气井机采效能提升技术探索与实践——以华庆油田长6区块为例 [J ] . 石化技术 , 2025 , 32 ( 8 ): 158 - 160 .

Li B T , Lu C R , Yang H K , et al . Exploration and practice of improving mechanical recovery efficiency of gas wells with high water content—Taking Chang 6 block in Huaqing Oilfield as an example [J ] . Petrochemical Industry Technology , 2025 , 32 ( 8 ): 158 - 160 .

杨蕊 , 朱宝锦 , 吕超 , 等 . 脉动条件下旋流场内气液两相流流型及其转变机理 [J ] . 化工学报 , 2022 , 73 ( 10 ): 4389 - 4398 .

Yang R , Zhu B J , Lyu C , et al . Study on flow pattern and transition mechanism of gas-liquid two-phase flow in swirl field under pulsating flow [J ] . CIESC Journal , 2022 , 73 ( 10 ): 4389 - 4398 .

王小兵 , 吕雷纲 , 李森 , 等 . 抽油泵固定凡尔球运动规律的数值模拟 [J ] . 流体机械 , 2021 , 49 ( 3 ): 40 - 45 .

Wang X B , Lyu L G , Li S , et al . Numerical simulation research on the motion law of standing valve ball of oil well pump [J ] . Fluid Machinery , 2021 , 49 ( 3 ): 40 - 45 .

叶卫东 , 史佳豪 , 宋玉杰 , 等 . 抽油泵-气锚组合防气性能仿真分析 [J ] . 中国工程机械学报 , 2022 , 20 ( 5 ): 384 - 389 .

Ye W D , Shi J H , Song Y J , et al . Simulation and analysis of anti-gas performance of pump-air anchor combination [J ] . Chinese Journal of Construction Machinery , 2022 , 20 ( 5 ): 384 - 389 .

练章华 , 安南 , 赵朝阳 , 等 . 基于正交试验的井下气液分离器结构优化设计 [J ] . 石油机械 , 2025 , 53 ( 9 ): 96 - 103 .

Lian Z H , An N , Zhao Z Y , et al . Structural optimization design of downhole gas-liquid separator based on orthogonal experiment [J ] . China Petroleum Machinery , 2025 , 53 ( 9 ): 96 - 103 .

王贺 , 张勇 , 张新成 . 高速聚结型井下气液分离器多参数组合优化设计 [J ] . 石油机械 , 2024 , 52 ( 11 ): 99 - 106 .

Wang H , Zhang Y , Zhang X C . Multi-parameter optimization for high-speed coalescing downhole gas-liquid separator [J ] . China Petroleum Machinery , 2024 , 52 ( 11 ): 99 - 106 .

Su R G , Wang X M , Ma J F , et al . Study on the effect of gas-liquid ratio and crude oil viscosity on the gas separation efficiency of composite gas anchor [J ] . Journal of Physics: Conference Series , 2024 , 2876 ( 1 ): 012042 .

Li C H , Li Z P , Zhang Y Y , et al . Numerical simulation and experimental study of two-phase flow in downhole spiral gas-liquid separator [J ] . Frontiers in Earth Science , 2023 , 11 : 1209743 .

Li D , Cao G S , Bai Y J , et al . Experimental study and numerical simulation on the influence of coating on liquid flow in the center tube of gas anchor [J ] . Energy Sources, Part A: Recovery, Utilization, and Environmental Effects , 2025 , 47 ( 1 ): 2445129 .

张楠 . 井下气液分离器的模拟与优化 [D ] . 成都 : 西南石油大学 , 2015 .

Zhang N . Simulation and optimization of downhole gas-liquid separators [D ] . Chengdu : Southwest Petroleum University , 2015 .

Lan W J , Wang H X , Li Y Q , et al . Numerical and experimental investigation on a downhole gas-liquid separator for natural gas hydrate exploitation [J ] . Journal of Petroleum Science and Engineering , 2022 , 208 : 109743 .

Zeng X B , Zheng C F , Li A , et al . Numerical study on a new separator for downhole gas-liquid separation [J ] . Chemical Engineering Research and Design , 2025 , 214 : 317 - 326 .

韩洪升 , 王庆伟 , 屈成亮 , 等 . 利用气液旋流提高抽油泵泵效的实验研究 [J ] . 科学技术与工程 , 2010 , 10 ( 36 ): 9069 - 9072, 9085 .

Han H S , Wang Q W , Qu C L , et al . The experimental study on improving the pumping efficiency using gas-liquid cyclone [J ] . Science Technology and Engineering , 2010 , 10 ( 36 ): 9069 - 9072, 9085 .

张莹 , 韦乃详 , 刘姝祺 , 等 . 泵外防气装置沉降部分数值模拟 [J ] . 科学技术与工程 , 2010 , 10 ( 29 ): 7259 - 7262, 7285 .

Zhang Y , Wei N X , Liu S Q , et al . Simulating the numerical of subsidence section of the pump external defense installment [J ] . Science Technology and Engineering , 2010 , 10 ( 29 ): 7259 - 7262, 7285 .

李恒岩 . CO 2 驱油井螺旋-重力组合气锚分离特性研究 [D ] . 大庆 : 东北石油大学 , 2024 .

Li H Y . Study on separation characteristics of spiral-gravity combined gas anchors in CO 2 flooding Wells [D ] . Daqing : Northeast Petroleum University , 2024 .

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Optimization of micro-electrolysis pretreatment for fracturing flowback fluids based on improved MOGOA

Liquid film flow and separation characteristics in the swirl separation section of a tubular deliquidiser

Research progress of vortex characteristics of impinging stream reactor

Process parameters optimization for degradation of benzene by non-thermal plasma

Flow field characteristics and particle classification performance of a new cyclonic classifier

Related Author

HU Kexian

HAN Jie

WAN Zhengping

ZHAO Hanlei

FAN Zheng

GE Xiaodong

LI Zhixiao

WANG Sicheng

Related Institution

College of Chemistry and Chemical Engineering, Xi’an Shiyou University

The 10th Oil Production Plant of Changqing Oilfield Branch Company, China National Petroleum Corporation

Technology Monitoring Center of PetroChina Changqing Oilfield Company, China National Petroleum Corporation

Shaanxi Mingze Yisheng Energy Technology Company Limited

Department of Environmental Engineering, Beijing Institute of Petrochemical Technology

Postal code：100011
Tel：010-64519466 Email：hgjz@cip.com.cn
Technical support is provided by Beijing Founder electronics co., LTD 京ICP备12046843号-2 京公网安备11010102001994号
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰