间歇井下气液高效分离器流场特性

王羕; 蔡萌; 邢雷; 肖茂林; 王飞; 李新亚

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

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间歇井下气液高效分离器流场特性

化工过程与装备 | 更新时间：2026-08-19

- 间歇井下气液高效分离器流场特性
- Analysis of flow field characteristics of an intermittent high-efficiency downhole gas-liquid separator
- 化工进展 2026年
- 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：
  
  王羕（1988—），男，博士研究生，高级工程师，研究方向为举升工艺及无杆举升技术研究。E-mail: 736113294@qq.com。
  蔡萌，博士生导师，教授级高工，研究方向为非均相介质分离及举升技术研究。E-mail: caimengdaqing@163.com.。
- 基金信息：
  
  国家自然科学基金(52304064);中国石油科技创新基金(2024DQ02-0102);中国博士后科学基金面上项目(2023M730481)
- DOI：10.16085/j.issn.1000-6613.2026-0983
  中图分类号： TQ051.8
- 收稿：2026-06-19，
  
  修回：2026-08-12，
  
  录用：2026-08-13，
- 稿件说明：
移动端阅览
王羕, 蔡萌, 邢雷, 等. 间歇井下气液高效分离器流场特性[J/OL]. 化工进展, 2026.

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.
王羕, 蔡萌, 邢雷, 等. 间歇井下气液高效分离器流场特性[J/OL]. 化工进展, 2026. DOI： 10.16085/j.issn.1000-6613.2026-0983.

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

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