Preparation method of clean thickening agent for fracturing
A thickening agent and cleaning technology, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of weak ability to form micelles, weak sand-carrying ability, high production cost, etc., to reduce repulsion, Good for oil displacement and good for environmental protection
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Embodiment 1
[0021] (1) Add α-aminopropanamide into a reaction kettle with a certain amount of water added, heat to 40-60°C, and after α-aminopropanamide is completely melted, add palmitamide, isoamyl alcohol and sorbitol in sequence, Keep the temperature at 60°C for 2 hours;
[0022] (2) Add N,N'-ethylene bisstearamide, stir for 10-30 minutes, and keep the temperature at 60°C;
[0023] (3) Heat up to 70-80°C, add dichloropropanol and o-toluic acid several times, this process is an exothermic reaction, strictly control the feeding speed, cool with water when the temperature is at 70°C, then add some dichloropropanol Propanol and part o-toluic acid, this process is circulated, until dichloropropanol and o-toluic acid are all added in the reactor;
[0024] (4) Keep the heating rate at 30°C / h, raise the temperature to 120°C-130°C, react for 10-12 hours, and start cooling to 50-60°C after the reaction is over;
[0025] (5) Finally, add the remaining isoamyl alcohol, sorbitol and water, stir ...
Embodiment 2
[0027] (1) Add α-aminopropanamide into a reaction kettle with a certain amount of water added, heat to 40-60°C, and after α-aminopropanamide is completely melted, add palmitamide, isoamyl alcohol and sorbitol in sequence, Keep the temperature at 60°C for 2 hours;
[0028] (2) Add N,N'-ethylene bisstearamide, stir for 10-30 minutes, and keep the temperature at 60°C;
[0029] (3) Heat up to 70-80°C, add dichloropropanol and o-toluic acid several times, this process is an exothermic reaction, strictly control the feeding speed, cool with water when the temperature is at 70°C, then add some dichloropropanol Propanol and part o-toluic acid, this process is circulated, until dichloropropanol and o-toluic acid are all added in the reactor;
[0030] (4) Keep the heating rate at 30°C / h, raise the temperature to 120°C-130°C, react for 10-12 hours, and start cooling to 50-60°C after the reaction is over;
[0031] (5) Finally, add the remaining isoamyl alcohol, sorbitol and water, stir ...
Embodiment 3
[0033] (1) Add α-aminopropanamide into a reaction kettle with a certain amount of water added, heat to 40-60°C, and after α-aminopropanamide is completely melted, add palmitamide, isoamyl alcohol and sorbitol in sequence, Keep the temperature at 60°C for 2 hours;
[0034] (2) Add N,N'-ethylene bisstearamide, stir for 10-30 minutes, and keep the temperature at 60°C;
[0035] (3) Heat up to 70-80°C, add dichloropropanol and o-toluic acid several times, this process is an exothermic reaction, strictly control the feeding speed, cool with water when the temperature is at 70°C, then add some dichloropropanol Propanol and part o-toluic acid, this process is circulated, until dichloropropanol and o-toluic acid are all added in the reactor;
[0036] (4) Keep the heating rate at 30°C / h, raise the temperature to 120°C-130°C, react for 10-12 hours, and start cooling to 50-60°C after the reaction is over;
[0037] (5) Finally, add the remaining isoamyl alcohol, sorbitol and water, stir ...
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