A kind of viscosity-increasing and cutting-lifting agent and its preparation method and use
A cutting agent and solvent technology, which is applied in the field of soil-free oil-based drilling fluid viscosity-increasing and shearing agent and its preparation, can solve the problems of insignificant application effect, large filtration loss, low ROP, etc. Enhanced performance of solid phase and formation water pollution, stable system performance, and reduced operating costs
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Embodiment 1
[0028] In a 1000ml four-necked bottle with agitator, heating device, thermometer, dropping funnel and dehydration device, add 336g (0.6mol) of dimer fatty acid and 15% (about 50g) of triethylene glycol of dimer fatty acid quality Monobutyl ether, stir evenly and start heating, put 43.2g (0.42mol) diethylenetriamine into the dropping funnel, under stirring and heating, drop it into the four-necked bottle through the dropping funnel, and heat up after the dropping to 155°C, keep this temperature until no more water comes out, and then continue to react for 15 minutes. After the reaction, cool down to 100°C, add 200ml of xylene, stir evenly and cool down to 60°C to prepare a soil-free oil-based drilling fluid. viscosifying agent.
Embodiment 2
[0030] Add the triethylene glycol monobutyl ether of 336g (0.6mol) dimer fatty acid and 15% (about 50g) of dimer fatty acid quality in the four-neck flask described in embodiment 1, stir and start heating, 49.44 g (0.48mol) diethylenetriamine was put into the dropping funnel, and was added dropwise to the four-necked bottle through the dropping funnel under stirring and heating. Continue to react for 10 minutes after the water is removed. After the reaction, cool down to 100°C, add 200ml of xylene, stir evenly and cool down to 60°C to prepare a viscosity-increasing and shearing agent that can be used for soil-free oil-based drilling fluid.
Embodiment 3
[0032] Add the triethylene glycol monobutyl ether of 17.8% (about 60g) of 336g (0.6mol) dimer fatty acid and fatty acid quality in the four-necked flask described in embodiment 1, stir and start heating, 65.92g ( Put 0.64mol) of diethylenetriamine into the dropping funnel, add it dropwise into the four-necked bottle through the dropping funnel under stirring and heating, and raise the temperature to 155°C after the dropping, keep this temperature until no more water comes out Continue the reaction for another 15 minutes. After the reaction, cool down to 100°C, add 200ml of xylene, stir evenly, and cool down to 60°C to prepare a viscosity-increasing and shearing agent that can be used for soil-free oil-based drilling fluid.
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