Structural optimization and performance analysis of de-foaming hydrocyclone for CO<sub>2</sub> flooding produced fluid

XING Lei; HUANG Jun; JIANG Minghu; ZHAO Lixin; LI Xinya; GUAN Shua; GAO Yang

doi:10.11949/0438-1157.20260305

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Structural optimization and performance analysis of de-foaming hydrocyclone for CO₂ flooding produced fluid

更新时间：2026-04-16

- Structural optimization and performance analysis of de-foaming hydrocyclone for CO₂ flooding produced fluid
- CIESC Journal (2026)
- 作者机构：
  
  1.东北石油大学机械科学与工程学院，黑龙江大庆 163318
  2.黑龙江省石油石化多相介质处理及污染防治重点实验室，黑龙江大庆 163318
  3.大庆油田博士后科研工作站，黑龙江大庆 1634584
  4.中国石油天然气股份有限公司勘探开发研究院，北京 100089
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20260305
  CLC：
- Received：11 March 2026，
  
  Revised：2026-04-16，
  
  Accepted：16 April 2026，
- 稿件说明：
移动端阅览
XING Lei, HUANG Jun, JIANG Minghu, et al. Structural optimization and performance analysis of de-foaming hydrocyclone for CO₂ flooding produced fluid[J/OL]. CIESC Journal, 2026. DOI: 10.11949/0438-1157.20260305.
DOI：

XING Lei, HUANG Jun, JIANG Minghu, et al. Structural optimization and performance analysis of de-foaming hydrocyclone for CO₂ flooding produced fluid[J/OL]. CIESC Journal, 2026. DOI: 10.11949/0438-1157.20260305. DOI：

摘要

针对CO

驱采出流体发泡导致气液分离困难的问题，提出了一种适用于CO

与油水混相泡沫消泡-分离的新型气液旋流分离器（de-foaming hydrocyclone

DFHC）。基于计算流体动力学方法，通过Plackett-Burman设计，开展DFHC的结构参数灵敏度分析，确定结构参数对分离性能影响的显著性排序。结合最陡爬坡设计与响应曲面法，建立显著性结构参数与分离效率之间的数学关系模型，进而得出可使分离效率达到最佳值的结构参数匹配方案。并针对优化后的DFHC结构开展不同入口流量、含气量及分流比条件下的分离及消泡性能实验研究，明确其对操作参数的适用范围及消泡-分离的高效性与可行性。结果表明，DFHC显著性结构及对应最佳参数匹配方案为旋流腔长度

= 330 mm，消泡装置长度

= 47 mm，倒锥长度

= 250 mm，旋流腔直径

= 38.5 mm，优化后分离效率由初始结构的74%提升至86.7%。在入口流量为4.4m³/h，含气量为70%，分流比为74%时，分离效率到最高值97.6%，消泡率达到95.8%。实验结果验证了数值模拟方法的准确性及DFHC消泡分离的可行性，研究结果为二氧化碳驱气液分离装备研发及应用提供一定的思路和参考。

Abstract

To address the difficulty in gas- liquid separation caused by foaming in CO

flooding produced fluid

a novel defoaming hydrocyclone (DFHC) suitable for the demulsification and separation of CO

-oil-water miscible foam is proposed. Based on computational fluid dynamics methods

a sensitivity analysis of the DFHC structural parameters was conducted using the Plackett -Burman design to determine the order of significan

ce of structural parameters on separation performance. Combined with the steepest ascent design and response surface methodology

a mathematical model relating the significant structural parameters to separation efficiency was established

thereby obtaining an optimal structural parameter matching scheme that maximizes separation efficiency. Experimental studies on the separation and defoaming performance of the optimized DFHC were carried out under different inlet flow rates

gas contents

and split ratios to clarify its applicable range of operating parameters and the high efficiency and feasibility of defoaming-separation. The results show that the significant structural parameters and the corresponding optimal matching scheme are

=330mm

=47mm

=250mm

=38.5mm

with the separation efficiency improved from 74% of the initial structure to 86.7% after optimization. At an inlet flow rate of 4.4 m³/h

gas content of 70%

and split ratio of 74%

the separation efficiency reached a maximum value of 97.6%

and the defoaming rate reached 95.8%. The experimental results verify the accuracy of the numerical simulation method and the feasibility of DFHC for defoaming and separation

providing insights and references for the development and application of gas-liquid separation equipment in CO

flooding.

关键词

Keywords

references

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⁰

Structural optimization and performance analysis of de-foaming hydrocyclone for CO2 flooding produced fluid

DOI：10.11949/0438-1157.20260305

摘要

Abstract

关键词

Keywords

references

Structural optimization and performance analysis of de-foaming hydrocyclone for CO₂ flooding produced fluid