Fracturing fluid drag reducer composition
A technology of drag-reducing agent and fracturing fluid, which is applied in the direction of drilling composition, production fluid, wellbore/well components, etc., and can solve the problems of low drag-reducing rate of fracturing fluid composition
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Embodiment 1
[0036] 1. Preparation of fracturing fluid drag reducer composition
[0037] (1) Dissolve 1.0 mol of hexane-based dimethyl tertiary amine and 0.5 mol of 1,2-dibromoethane in 200 ml of ethanol solution, and dropwise add 5 wt% sodium hydroxide aqueous solution to control the pH of the system at 9~ 9.5, react at 65°C for 6 hours. After the reaction was finished, the solvent was evaporated to obtain 0.8mol white solid powder C 6 -2-C 6 .
[0038] (2) Dissolve 0.5mol octylamine polyoxyethylene ether (2) in 200ml benzene, add to the reactor equipped with stirring, reflux device, and water separation device, add 1.0mol powdered sodium hydroxide, alkalinize at 65°C After 2 hours, add 0.6 mol of sodium chloroacetate, reflux for 5 hours, remove the solvent, and recrystallize in ethanol to obtain 0.44 mol of octyl ammonium polyoxyethylene (2) ether carboxylate.
[0039] (3) Put 1 copy of C 6 -2-C 6 Quaternary ammonium salt gemini surfactant, 100 parts octyl ammonium polyoxyethylene ...
Embodiment 2
[0045] 1. Preparation of fracturing fluid drag reducer composition
[0046] (1) Dissolve 1.0 mol of octyl dimethyl tertiary amine and 0.5 mol of 1,3-dibromopropane in 200 ml of ethanol solution, and dropwise add 5 wt% sodium hydroxide aqueous solution to control the pH of the system between 9 and 9.5 In between, react at 65°C for 6 hours. After the reaction was finished, the solvent was evaporated to obtain 0.8mol white solid powder C 8 -3-C 8 .
[0047] (2) Dissolve 0.5mol of dodecylamine polyoxyethylene ether (2) in 200ml of benzene, add to the reactor equipped with stirring, reflux device, and water separation device, add 1.0mol of powdered sodium hydroxide, 65 ℃ alkali After 2 hours, add 0.6 mol of sodium chloroacetate, reflux for 5 hours, remove the solvent, and recrystallize in ethanol to obtain 0.44 mol of octyl ammonium polyoxyethylene (2) ether carboxylate.
[0048] (3) Put 1 copy of C 8 -3-C 8 Quaternary ammonium salt gemini surfactant, 2 parts of lauryl ammoni...
Embodiment 3
[0052] 1. Preparation of fracturing fluid drag reducer composition
[0053] (1) Dissolve 1.0 mol of octyl dimethyl tertiary amine and 0.5 mol of 1,4-dibromobutane in 200 ml of ethanol solution, and dropwise add 5 wt% sodium hydroxide aqueous solution to control the pH of the system at 9 to 9.5 In between, react at 65°C for 6 hours. After the reaction was finished, the solvent was evaporated to obtain 0.8mol white solid powder C 8 -4-C 8 .
[0054] (2) Dissolve 0.5mol hexadecylamine polyoxyethylene ether (2) in 200ml benzene, add to the reactor equipped with stirring, reflux device, and water separation device, add 1.0mol powdered sodium hydroxide, 65 ℃ alkali After 2 hours, add 0.6 mol of sodium chloroacetate, reflux for 5 hours, remove the solvent, and recrystallize in ethanol to obtain 0.44 mol of cetyl ammonium polyoxyethylene (2) ether carboxylate.
[0055] (3) Put 1 copy of C 8 -4-C 8 Quaternary ammonium salt gemini surfactant, 0.5 part cetyl ammonium polyoxyethylen...
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