Oil field crude oil pour point depressant and preparing method thereof
A crude oil pour point depressant and oil field technology, which is applied in mechanical equipment, gas/liquid distribution and storage, pipeline systems, etc., can solve the problem of large pour point depressant range, small dosing amount, and unsatisfactory crude oil pour point depressant in offshore oilfields, etc. problem, to achieve the effect of enhanced shear resistance, simple process, and easy control of the reaction process
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Example Embodiment
[0042] Example 1:
[0043] (1) First mix 296.5g of hexadecyl acrylate, 518.2g of 2-perfluorooctyl ethyl acrylate, and 1222.1g of xylene (the ratio of the amount of hexadecyl acrylate to perfluorooctyl ethyl acrylate is 1:1), heat up to 60℃, stir for 1h;
[0044] (2) Add 52.1g of styrene (the ratio of hexadecyl acrylate to styrene is 2:1), turn on the nitrogen protection, increase the temperature to 85°C, and add dropwise toluene containing 3.5g of benzoyl peroxide Solution, after 12 hours of reaction, product A is obtained;
[0045] (3) Mix 1% of the product A's mass of poly-α-olefin and 5% of the A's mass of ethylene-vinyl acetate copolymer with A, and stir evenly to obtain a pour point depressant for oil field crude oil.
Example Embodiment
[0046] Example 2:
[0047] (1) First mix 268.4g of tetradecyl acrylate, 106g of 2-perfluorobutylethyl acrylate, and 374.4g of trimethylbenzene (the ratio of tetradecyl acrylate to perfluorobutylethyl acrylate is 3 :1), heat up to 50℃, stir for 1h;
[0048] (2) Add 104.2g of styrene (the ratio of tetradecyl acrylate to styrene is 1:1), turn on the nitrogen protection, heat up to 60°C, and dropwise add 1.2g of azobisisobutyronitrile Xylene solution, after 7 hours of reaction, product A is obtained;
[0049] (3) Mix 5% of the product A's mass of poly-α-olefin and 1% of the A's mass of acrylate-maleic anhydride copolymer with A, and stir evenly to obtain a pour point depressant for oil field crude oil.
Example Embodiment
[0050] Example 3:
[0051] (1) First mix 324.5g of octadecyl acrylate, 83.6g of 2-perfluorohexylethyl acrylate, and 705.8g of benzene (the ratio of the amount of octadecyl acrylate to perfluorohexylethyl acrylate is 5:1 ), warm up to 70°C and stir for 1.5h;
[0052] (2) Add 26.1g of styrene (the ratio of octadecyl acrylate to styrene is 4:1), turn on the nitrogen protection, heat up to 110°C, and add 1.4g of benzoyl peroxide-containing diesel oil dropwise Solution, after 10 hours of reaction, product A is obtained;
[0053] (3) Mix 2% of the mass of product A with poly-α-olefin and 4% of the mass of A's methacrylate-maleic anhydride copolymer with A, and stir evenly to obtain a pour point depressant for oil field crude oil.
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