Nano-foam oil-displacing agent and preparation method thereof
A technology of nano-foam and oil-displacing agent, which is applied in chemical instruments and methods, earth-moving drilling, wellbore/well components, etc. Emulsion stabilization performance, effect of suppressing gas diffusion
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Embodiment 1
[0023] The nano foam oil displacement agent provided by the embodiment of the present invention comprises the following components in weight percentage: 30% of sodium alkylsulfonate, 10% of betaine, 10% of oily nanoparticles, 7% of polyacrylamide, dodecyl Trimethylammonium bromide 1.5%, the balance is water.
[0024] The preparation method of above-mentioned nano foam oil displacement agent comprises the steps:
[0025] (1) Preparation of oily silica particles:
[0026] Disperse the solid paraffin and silicon dioxide particles in water, use a high-speed emulsifier to stir at 300r / min for 4 minutes to emulsify them, cool the emulsion after emulsification, and rinse the solidified paraffin emulsion droplets without adsorbed silicon dioxide particles, Dry the solidified paraffin emulsion in vacuum at a temperature of 60°C, then disperse it into an ethanol solution containing isooctanoic acid, filter out the paraffin emulsion after the reaction, and rinse the surface of the paraf...
Embodiment 2
[0030] The nano-foam oil displacement agent that the embodiment of the present invention provides comprises the following components by weight percentage: 45% of sodium alkylsulfonate, 15% of betaine, 12% of oily silicon dioxide particles, 10% of polyacrylamide, dodecyl Sodium alkylbenzene sulfonate 2%, the balance is water.
[0031] The preparation method of above-mentioned nano foam oil displacement agent comprises the steps:
[0032] (1) Preparation of oily silica particles:
[0033] Disperse solid paraffin and silicon dioxide in water, use a high-speed emulsifier to stir at 400r / min for 5 minutes to emulsify it, cool the emulsion after emulsification, rinse the unadsorbed silicon dioxide particles on the surface of the solidified paraffin emulsion droplet, and put The cured paraffin emulsion drops are vacuum-dried at 70°C, and then dispersed into an ethanol solution containing isooctanoic acid. After the reaction, the paraffin emulsion drops are filtered out, and the surf...
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