A kind of humic acid oil-soluble fluid loss reducer and preparation method thereof
A technology of fluid loss control agent and humic acid, which is applied in the direction of chemical instruments and methods, drilling compositions, etc., to achieve the effects of easy post-processing, environmental protection, and simple operation
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Embodiment 1
[0017] Add 200g of humic acid and 240g of propylene oxide into the container, stir and mix evenly, heat up to 120°C in a closed container, react for 6h, and dry. Add 200 parts of the above-mentioned modified humic acid in the container, take 100 g of octadecylamine and add it to the humic acid, mix the solid grains of the two reactants, stir evenly, put the prepared mixture into the reaction container, and put it in a non-airtight Under certain conditions, after driving oxygen with nitrogen for 30 minutes, seal the reaction vessel, heat the closed reaction vessel to 200°C, and start the reaction between the modified humic acid and the organic amine in the vessel, and react at this temperature for 8 hours. After the reaction product is cooled to room temperature, it is pulverized by a pulverizer and passed through a 60-mesh sieve to obtain the oil-based drilling fluid fluid loss control agent product.
Embodiment 2
[0019] Add 200g of humic acid and 200g of propylene oxide into the container, stir and mix evenly, heat up to 120°C in a closed container, react for 4 hours, and dry. Add 200g of the above-mentioned modified humic acid into the container, take 80g of octadecyltrimethylammonium chloride and add it to the humic acid, mix the solid grains of the two reactants, stir evenly, and put the prepared mixture into the reaction container In the process, under non-airtight conditions, use nitrogen to drive oxygen for 30 minutes, then seal the reaction vessel, and heat the closed reaction vessel to 180°C, so that the modified humic acid and organic amine in the vessel start to react. The reaction was carried out for 10 hours. After the reaction product is cooled to room temperature, it is pulverized by a pulverizer and passed through a 60-mesh sieve to obtain the oil-based drilling fluid fluid loss control agent product.
Embodiment 3
[0021] Add 200g of humic acid and 180g of propylene oxide into the container, stir and mix evenly, heat up to 80°C in a closed container, react for 8 hours, and dry. Add 200 parts of the above-mentioned modified humic acid in the container, take 60g of dodecylamine and add it to the humic acid, mix the solid grains of the two reactants, stir evenly, put the prepared mixture into the reaction container, and put it in a non-closed Under certain conditions, after 30 minutes of oxygen driving with nitrogen, the reaction vessel is sealed, and the closed reaction vessel is heated to 220° C., so that the modified humic acid and organic amine in the vessel start to react, and the reaction is carried out at this temperature for 8 hours. After the reaction product is cooled to room temperature, it is pulverized by a pulverizer and passed through a 60-mesh sieve to obtain the oil-based drilling fluid fluid loss control agent product.
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