特种油气藏 ›› 2022, Vol. 29 ›› Issue (4): 156-163.DOI: 10.3969/j.issn.1006-6535.2022.04.022

• 钻采工程 • 上一篇    下一篇

泡沫排水采气井强化排采装置优化设计

黄斌1, 王思琪1, 郭轶闻2, 丁琦3, 张璐1, 唐博强1, 郭伟1, 邹澈1   

  1. 1.东北石油大学,黑龙江 大庆 166318;
    2.揭阳中石油昆仑燃气有限公司,广东 揭阳 515300;
    3.中国石化销售股份有限公司湖北荆州石油分公司,湖北 荆州 434000
  • 收稿日期:2021-10-15 修回日期:2022-03-04 出版日期:2022-08-25 发布日期:2023-01-09
  • 作者简介:黄斌(1982—),男,教授,2004年毕业于东北石油大学石油工程专业,2013年毕业于该校石油与天然气工程专业,获博士学位,现从事化学驱提高油气采收率、油气田采出液处理方面的研究与教学工作。
  • 基金资助:
    国家自然科学基金“活性原油在非均质储层中的自适应控水增油机理”(51574089)

Optimal Design of Improved Drainage and Production Device for Gas Recovery Wells with Foam Drainage

Huang Bin1, Wang Siqi1, Guo Yiwen2, Ding Qi3, Zhang Lu1, Tang Boqiang1, Guo Wei1, Zou Che1   

  1. 1. Northeast Petroleum University, Daqing, Heilongjiang 166318, China;
    2. Jieyang PetroChina Kunlun Gas Co., Ltd., Jieyang, Guangdong 515300, China;
    3. Hubei Jingzhou Petroleum Company, Sinopec Marketing Co., Ltd., Jingzhou, Hubei 434000, China
  • Received:2021-10-15 Revised:2022-03-04 Online:2022-08-25 Published:2023-01-09

摘要: 针对天然气井泡沫排水采气工艺效率低的问题,基于COMSOL软件,建立了井筒内气体-泡沫流耦合模型,对泡沫排水采气井液相滞留器和二次发泡装置进行了优化设计。研究表明:在波浪形滞留器结构中,液相稳定后,不会在气相携带的影响向下运移,体系内产生相对稳定的动态体系,流动阻力相对较低,具有很强的存水能力;气体经过强化发泡结构进入液相时会产生气泡,脉冲梯形发泡器的发泡效果最好。通过泡沫排水采气井强化起泡室内实验,对比分析加入强化排采装置前后井筒内液面高度随时间的变化,验证了强化排采装置的实用性。该强化排采装置可实现高效的泡沫排水采气,对天然气的高效开发具有重要意义。

关键词: 泡沫, 排水采气, 强化发泡, 液相滞留, 天然气

Abstract: To address the problem of low efficiency of foam drainage and gas recovery technology in gas wells, a gas-foam flow coupling model in wellbore was established based on COMSOL software, and a liquid retention device and a secondary foaming device used in gas recovery wells with foam drainage were optimally designed. It was found in the study that in the wave-shaped retention device, the liquid was stabilized and not be carried downwards by gas, resulting in a relatively stable dynamic system with relatively low flow resistance and strong water storage capacity; foams were generated when the gas entered the liquid through the improved foaming structure, and the foaming performance of pulse trapezoidal foaming device was the best. The laboratory tests were conducted in gas recovery wells with foam drainage to compare and analyze the variation of liquid level in the wellbore with time before and after the improved drainage and recovery device was mounted and to verify the practicality of the improved drainage and recovery device. The improved drainage and recovery device can realize efficient foam drainage and gas recovery, with great significance to the efficient development of natural gas.

Key words: foam, gas recovery with water discharge, enhanced foaming, liquid retention, natural gas

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