Anti-swelling agent and preparation method thereof, and application in water-sensitive glutenite reservoir
A technology of anti-swelling agent and solubilizing agent, which is applied in the direction of chemical instruments and methods, drilling compositions, etc., and can solve problems such as easy blockage of formation channels, reduction of formation permeability, and production reduction of oil wells
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Embodiment 1
[0022] The present embodiment provides an anti-swelling agent, which includes: 10% ethylenediamine hydrochloride, 30% polyaluminum chloride PAC-30, 10% chlorinated Sodium, 5% Octadecyltrimethylammonium Chloride and 45% Water.
[0023] The preparation method of the anti-swelling agent comprises: adding 45g of water, 10g of ethylenediamine hydrochloride, 30g of polyaluminum chloride PAC-30, 5g of octadecyltrimethyl After ammonium chloride was mixed, the temperature was raised to 70° C. for 2 hours, then cooled to room temperature, and 10 g of sodium chloride was added, and the anti-swelling agent was obtained after stirring for 1 hour.
Embodiment 2
[0025] The present embodiment provides an anti-swelling agent, which includes: 15% ethylenediamine hydrochloride, 30% polyaluminum chloride PAC-30, 10% chlorinated Potassium, 5% Alkylphenol Ethoxylates and 40% Water.
[0026] The preparation method of the anti-swelling agent comprises: adding 40 g of water, 15 g of ethylenediamine hydrochloride, 30 g of polyaluminum chloride PAC-30, and 5 g of alkylphenol polyoxyethylene ether into a stirred reactor , after mixing, the temperature was raised to 60° C. for 3 hours, then cooled to room temperature, and 10 g of potassium chloride was added, and the anti-swelling agent was obtained after stirring for 1 hour.
Embodiment 3
[0028] The present embodiment provides an anti-swelling agent, which is 100% by mass, and the anti-swelling agent comprises: 10% polyquaternium-7, 35% polyaluminum chloride PAC-30, 10% chlorinated Potassium, 5% octadecyltrimethylammonium chloride and 40% water.
[0029] The preparation method of the anti-swelling agent comprises: adding 40 g of water, 10 g of polyquaternium-7, 35 g of polyaluminum chloride PAC-30, 5 g of octadecyl trimethyl in a stirred reactor Ammonium chloride, after mixing, the temperature was raised to 90°C for 2 hours, then cooled to room temperature, and 10 g of potassium chloride was added, and the anti-swelling agent was obtained after stirring for 1 hour.
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