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日用化学工业（中英文）

日用化学工业（中英文） ›› 2025, Vol. 55 ›› Issue (7): 825-830.doi: 10.3969/j.issn.2097-2806.2025.07.002

• 特邀专稿 • 上一篇    下一篇

适用于川西中浅层气藏的抗凝析油泡排剂研制及室内性能评价

鲁光亮1,唐雷1,田文忠1,李嘉明2,冯玉军2,殷鸿尧2,*()   

  1. 1.中国石油化工股份有限公司 西南油气分公司采气一厂，四川 德阳 618000
    2.四川大学高分子研究所 先进高分子材料全国重点实验室，四川 成都 610065
  • 收稿日期:2024-11-15 出版日期:2025-07-22 发布日期:2025-07-23
  • 基金资助:
    国家科技重大专项(2016ZX05048-004-007);国家自然科学基金(21773161)

Development and laboratory evaluation of anti-condensate oil foaming agent for shallow gas reservoirs in western Sichuan

Guangliang Lu1,Lei Tang1,Wenzhong Tian1,Jiaming Li2,Yujun Feng2,Hongyao Yin2,*()   

  1. 1. West Sichuan Gas Production Plant, Southwest Oil and Gas Company, Sinopec, Deyang, Sichuan 618000, China
    2. National Key Laboratory of Advanced Polymer Materials, Polymer Research Institute, Sichuan University, Chengdu, Sichuan 610065, China
  • Received:2024-11-15 Online:2025-07-22 Published:2025-07-23
  • Contact: *E-mail: hyyin@scu.edu.cn

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摘要： 泡沫排液采气是低压低产气井稳产最经济有效的措施，然而井底积液常伴随凝析油污染，导致常规泡排剂排液效果变差。考察了8种表面活性剂的泡沫性能，探讨了含油量、温度对泡沫性能的影响，优选出抗油性能较好的月桂酰胺丙基甜菜碱（CAB）作为主剂，进一步复配氟碳表面活性剂和稳泡剂研制了新型抗凝析油泡排剂SCU-7。考察了SCU-7的流动性、不同含油量的泡沫性能、模拟井底高温高压下的泡沫性能，探讨了抗油机理。结果表明，在常压60 ℃且含油量为10%时，0.3%的SCU-7在4×104 mg/L模拟盐水中的起泡高度达到167 mm，3 min泡沫高度达到135 mm，15 min携液量达到206 mL，综合性能优异。含油量增加至30%时，泡沫综合性能有一定程度的下降。在高压6 MPa及80，100，120 ℃下，SCU-7都可在模拟盐水中产生致密的泡沫。机理分析认为，CAB在模拟盐水中具有优异的降低表面张力的性能，复配氟碳表面活性剂后，表面张力进一步降低，而稳泡剂可以增强泡沫液膜的强度，提升泡沫性能。因此，SCU-7具有较优异的抗油性能。

关键词: 泡排剂, 表面活性剂, 泡沫性能, 抗凝析油

Abstract:

The foam drainage gas recovery technique in natural gas production is widely recognized as the most cost-effective and efficient method for removing the water accumulated at the well bottom, which is an essential measure to ensure stable production for low-pressure and low-productivity gas wells. However, the bottomhole liquids are often contaminated by condensate oil, resulting in reduced effectiveness of conventional foaming agents. In this work, the foam properties of eight surfactants were investigated and the effects of oil content and temperature on their foam properties were also examined. The zwitterionic surfactant CAB, which demonstrated relatively good resistance to oil, was selected as the primary component of the foaming agent. By combining CAB with a fluorocarbon surfactant and a foam stabilizer, a new anti-condensate oil foaming agent SCU-7 was developed. The flowability, foaming performance at different oil content, and the foaming performance under simulated high-temperature and high-pressure conditions at the bottom were analyzed to explore the anti-oil mechanism of SCU-7. The results showed that, at 60 ℃ under atmospheric pressure, with an oil content of 10%, a concentration of 0.3% SCU-7 achieved the foam height of 167 mm in simulated saline water with total salinity of 4×104 mg/L; the foam height was 135 mm at 3 min; after 15 min, the liquid-carrying capacity was up to 206 mL, demonstrating excellent overall performance. However, when the oil content was increased to 30%, the overall foaming performance declined to some extent. Under high pressure of 6 MPa and at temperatures of 80 ℃, 100 ℃ and 120 ℃, SCU-7 could generate dense foams in simulated saline water. Mechanism analysis indicated that CAB exhibited excellent ability of surface tension reduction in simulated saline water; mixing CAB with fluorocarbon surfactant could further decrease surface tension, while the presence of foam stabilizer could enhance the strength of foam film and thus improve foaming performance. Therefore, SCU-7 demonstrated good foaming performance with improved anti-oil properties.

Key words: foaming agent, surfactant, foaming performance, anti-condensation oil

中图分类号: 

  • TQ423