| 有机缓释微乳酸高效解堵剂的制备及性能研究 |
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| 引用本文： | 何立成,蓝强,黄维安,王雪晨,尚术芳,李秀灵. 有机缓释微乳酸高效解堵剂的制备及性能研究[J]. 钻井液与完井液, 2022, 39(2): 259-264. DOI: 10.12358/j.issn.1001-5620.2022.02.021 |
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| 作者姓名： | 何立成 蓝强 黄维安 王雪晨 尚术芳 李秀灵 |
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| 作者单位： | 1.中石化胜利石油工程有限公司, 山东东营 257001 |
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| 基金项目： | 中石化工程公司课题“有机缓释酸解卡剂的研制与应用”（SG19-78K）和中石化课题“复合盐水微乳液研究与应用”（JP20004）部分研究内容 |
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| 摘 要： | 针对油田常用酸化方法存在酸液剖面不均匀和二次伤害的问题,优选有机酸和无机酸形成复合酸,优选表面活性剂和助表面活性剂,制备出有机缓释酸微乳液,其最优配方为:AQAS∶AEO=1∶1, 正丁醇∶正辛醇 =1∶1,水相∶油相=3∶7,助表面活性剂︰表面活性剂=1∶2,乙酸∶氢氟酸=4∶1。该体系的泥饼清除率超过85%,在低渗岩心中解堵效果显著,其渗透率恢复值超过100%。
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| 关 键 词： | 酸化 有机缓释 微乳酸 泥饼清除 解堵 |
| 收稿时间： | 2021-10-29 |
Preparation and Properties of Slow-release Organic Acid Micro-emulsion with High Efficient Plugging Removal |
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| Affiliation: | 1.Sinopec Shengli Petroleum Engineering Co., Dongying, Shandong 2570012.Drilling fluid technical service centre of Sinopec Shengli Petroleum Engineering Co., Dongying, Shandong 2570173.School of petroleum engineering, China University of Petroleum (East China), Qingdao, Shandong 266580 |
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| Abstract: | In view of the problem of uneven acidizing profile and second damage during the acidification in stimulation, organic acids and inorganic acids were selected to form complex acids, and surfactant and co-surfactant also were optimized to prepare organic slow-release acid micro-emulsion. The formula is: AQAS∶AEO=1∶1, n-butanol: n-octanol =1∶1, water phase: oil phase = 3∶7, co-surfactant∶surfactant =1∶2, acetic acid∶hydrofluoric acid = 4∶1. The mud cake removal rate of the system is more than 85%, the plugging removal effect in the low-permeability core is remarkable, and the permeability recovery value is more than 100%. |
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