| 改性橡碗栲胶高温堵剂的制备 |
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| 引用本文： | 谌凡更,侯玲,马宝歧. 改性橡碗栲胶高温堵剂的制备[J]. 西安石油大学学报(自然科学版), 1990, 0(1) |
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| 作者姓名： | 谌凡更 侯玲 马宝歧 |
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| 作者单位： | 西安石油学院应用化学系，河南石油局采油二厂，西安石油学院应用化学系 |
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| 摘 要： | 橡碗栲胶与苯酚、甲醛等物质反应,其产物可在170～280℃范围内形成凝胶。胶凝时间40分钟到15小时。磺化度较低的栲胶成胶效果较好。栲胶改性反应的最佳配料比为栲胶:苯酚:甲醛(质量)=10:2.8:8。改性物在pH4～9的范围内均可成胶。加入金属离子能显著缩短胶凝时间。凝胶耐酸、碱、盐及高温。该堵剂配方可用于蒸汽采油过程中的地层封堵。
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| 关 键 词： | 栲胶 凝胶 胶凝时间 高温堵剂 |
A High Temperature Plugging Agent Made from Modified Acorn Cup Tannin Extract |
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| Chen Fangeng,Hou Ling,Ma Baoqi. A High Temperature Plugging Agent Made from Modified Acorn Cup Tannin Extract[J]. Journal of Xian Shiyou University, 1990, 0(1) |
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| Authors: | Chen Fangeng Hou Ling Ma Baoqi |
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| Affiliation: | Department of Applied Chemistry |
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| Abstract: | A high temperature plugging agent is prepared by reacting acorn cup tannin extract with phenol and formaldehyde.The modified tannin extract can form gel at temperature 170～280℃ and pH4～9. The gelation time varies from 40 minutes to 15 hours. The experiments indicate that tannin extract with relatively low extent of sulphonation is suitable for gelation.The reactants for preparing modified tannin extract should be in a proper ratio, i.e,tannin extract to phenol to formaldehyde being 10 to 2.8 to 8. The existence of metallic ions can accelerate the process of gelation.The gel is heat resistant. It doesn't dissolve in acid, base or brine. |
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| Keywords: | tannin extract gel gelation time high temperature plugging agent. |
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