一种致密油气藏开采用超临界二氧化碳稠化剂的制备方法

本发明涉及一种致密油气藏开采用超临界二氧化碳稠化剂的制备方法。它能解决常规开采方式对油气储层造成伤害的问题。其技术方案：将瓶放入冰水浴中，向瓶中加入全氟辛基乙醇，再加入甲苯磺酰氯和吡啶，在0-20℃反应3小时，反应结束后加入滤纸，超声波分散1小时，然后去除滤纸，加入稀盐酸洗涤3-5次得中间产物1；然后在另一瓶中加入(N-叔丁氧基羰基)丝氨醇和中间产物1，再加入碳酸钾和N-N-二甲基甲酰胺，升温到40℃反应4小时制得中间产物2；最后加入三氟乙酸和二氯甲烷和中间产物2，在45℃反应2小时，萃取真空干燥后，加入1，6-己二异氰酸酯反应2小时得最终产物。该稠化剂能够增加二氧化碳粘度，可用于压裂改造和化...

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Bibliographic Details
Format Patent
LanguageChinese
Published 12.05.2020
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
ADHESIVES
CHEMISTRY
DYES
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
ORGANIC CHEMISTRY
PAINTS
POLISHES
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Summary:本发明涉及一种致密油气藏开采用超临界二氧化碳稠化剂的制备方法。它能解决常规开采方式对油气储层造成伤害的问题。其技术方案：将瓶放入冰水浴中，向瓶中加入全氟辛基乙醇，再加入甲苯磺酰氯和吡啶，在0-20℃反应3小时，反应结束后加入滤纸，超声波分散1小时，然后去除滤纸，加入稀盐酸洗涤3-5次得中间产物1；然后在另一瓶中加入(N-叔丁氧基羰基)丝氨醇和中间产物1，再加入碳酸钾和N-N-二甲基甲酰胺，升温到40℃反应4小时制得中间产物2；最后加入三氟乙酸和二氯甲烷和中间产物2，在45℃反应2小时，萃取真空干燥后，加入1，6-己二异氰酸酯反应2小时得最终产物。该稠化剂能够增加二氧化碳粘度，可用于压裂改造和化学驱。 The present invention disclosed a method for preparing a thickener for tight oil and gas reservoir, which relieves damages. The technical solution includes the following steps: putting a three-flask in ice; adding perfluoroalkyl alcohol, P-toluenesulfonyl chloride and pyridine; reacting for 3 h at 0-20° C.; adding filter paper; ultrasonic dispersing for 1 h; removing the filter paper; washing the solution for 3-5 times by adding dilute hydrochloric acid to collect the intermediate product (I); adding 1,3-dihydroxy-propane-2-tert-butyl carbamate and the intermediate product (I) in another three-flask; adding potassium carbonate and N,N-dimethylformamide; reacting for 4 h at 40° C. to collect the intermediate pro
Bibliography:Application Number: CN201910737149