| 玻璃基质表面的气体润湿性与其表面自由能关系 |
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| 作者姓名： | 张民 蒋官澄 邢晓璇 庞姜涛 孙飞 罗少杰 |
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| 作者单位： | 中国石油大学(北京)石油工程教育部重点实验室;中国石油大学(北京)油气资源与探测国家重点实验室;胜利油田海洋采油厂;长庆油田分公司井下技术作业公司 |
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| 基金项目： | 国家自然科学基金创新研究群体项目(51221003);中国国家杰出青年基金项目(50925414);国家科技重大专项(2011ZX05009-005-03A) |
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| 摘 要： | 针对气相中憎液表面的气体润湿性常常被忽略,但理论和实验证实气体的润湿性并不总是可以被忽略,凝析气藏气体润湿程度对气井产能具有重要影响,根据Owens双液法建立固体表面自由能计算模型,并且结合自定义的气体润湿性参数实现定量表征气体润湿性的大小,导出固体表面的气体润湿性与表面自由能的数学关系式.采用氟碳聚合物(Zonyl8740)实现空气中"空气/水/载玻片"体系载玻片表面的优先气湿,随Zonyl8740质量分数的增大"正十六烷/空气/载玻片"体系载玻片表面的气湿性增强.
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| 关 键 词： | 玻璃基质 气体润湿性 表面自由能 气体润湿性参数 定量评价 |
Relationship between gas wettability of glass matrix surface and its surface free energy |
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| Authors: | ZHANG Min JIANG Guan-cheng XING Xiao-xuan PANG Jiang-tao SUN Fei LUO Shao-jie |
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| Institution: | 1,2(1.MOE Key Laboratory of Petroleum Engineering,China University of Petroleum,Beijing 102249,China;2.State Key Laboratory of Petroleum Resource and Prospecting,China University of Petroleum,Beijing 102249,China;3.Offshore Petroleum Recovery Plant of Shengli Oilfield Branch Company,Dongying,Shandong 257237,China;4.Changqing Downhole Technical Service Company,Xi’an,Shanxi 710018,China) |
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| Abstract: | In gas phase,affinity to air is a typical feature of hydrophobic and oleophobic surface,but frequently it has either been overlooked or not taken into consideration.On the other hand,both theory and experiments indicate that gas-wetness can not be always overlooked and the gas-wet degree affects gas-well production greatly in gas condensate reservoirs.In the study,mathematic model of surface free energy,combined with gas-wet ability parameters was used to characterize quantitative gas-wet degree.And the relationship between gas wettability and surface free energy was established.Furthermore,preferential gas-wettability is realized by use of fluorocarbon polymer(Zonyl8740) in "air/water/glass slide" system in air.While,in this system,with the increase of concentration of Zonyl8740,the gas wettability of glass slide surface is getting stronger. |
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| Keywords: | glass matrix gas wettability surface free energy gas-wet ability parameter quantitative measurement |
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