Heavy oil viscosity reducer as well as preparation method and application thereof
A heavy oil viscosity reducer and solvent technology, applied in the field of heavy oil viscosity reducer, can solve the problems of difficulty in dissolution, low viscosity reduction rate, failure to meet the requirements of mining and transportation, etc., and achieves improved grafting rate, easy and stable dispersion , the effect of increasing complexity
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[0075] Example 1 Preparation of sample 1
[0076] Step (1) Add 50ml absolute ethanol, 1ml acetic acid, 1ml distilled water, 1ml KH570 (γ-methacryloxypropyltrimethoxysilane) in a 100ml three-necked flask in sequence;
[0077] Step (2) The mixture in step (1) is mechanically stirred at room temperature and hydrolyzed for 2 hours at a stirring speed of 200r / min;
[0078] Step (3) Add 2.5g of nano SiO in step (2) 2 , The temperature was raised to 50°C and reacted for 3h under vigorous stirring.
[0079] Step (4) The reaction product is centrifuged (rotating speed 4000r / min), and washed with absolute ethanol for several times;
[0080] Step (5) Vacuum drying at 30°C for 10 hours to obtain the pre-modified product nano-KH570 / SiO 2 ;
[0081] Step (6) Disperse the pre-modified product in step (5) uniformly in absolute ethanol, add a certain amount of octadecyl methacrylate (SMA) and acrylamide (AM), stir to dissolve, and heat to 80°C ;
[0082] Step (7) After blowing nitrogen for 30 minutes, ad...
Example Embodiment
[0085] Example 2 Preparation of sample 2
[0086] Step (1) Add 50ml absolute ethanol, 1ml acetic acid, 1ml distilled water, 1ml KH570 (γ-methacryloxypropyltrimethoxysilane) in a 100ml three-necked flask in sequence;
[0087] Step (2) The mixture in step (1) is mechanically stirred at room temperature and hydrolyzed for 2 hours at a stirring speed of 500r / min;
[0088] Step (3) Add 2.5g of nano SiO in step (2) 2 , The temperature was raised to 50°C and reacted for 3h under vigorous stirring.
[0089] Step (4) The reaction product is centrifuged (rotating speed 4000r / min), and washed with absolute ethanol for several times;
[0090] Step (5) Vacuum drying at 30°C for 10 hours to obtain the pre-modified product nano-KH570 / SiO 2 ;
[0091] Step (6) Disperse the pre-modified product in step (5) uniformly in absolute ethanol, add a certain amount of octadecyl methacrylate (SMA) and acrylamide (AM), stir to dissolve, and heat to 80°C ;
[0092] Step (7) After blowing nitrogen for 30 minutes, ad...
Example Embodiment
[0095] Example 3 Preparation of sample 3
[0096] Other operations are the same as in Example 1, the difference is that the silane coupling agent used in step (1) is vinyl triethoxy silane; the final product nano PSMA-AM / SiO is obtained 2 Composite material viscosity reducer, marked as sample 3.
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