Heavy oil viscosity reducer as well as preparation method and application thereof
A heavy oil viscosity reducer and heavy oil technology, applied in chemical instruments and methods, earth drilling, production fluids, etc., can solve the problem of low viscosity reduction rate, achieve low oil-water interfacial tension, good solubility, and wide application range wide effect
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[0029] The present invention also provides a preparation method of the thick oil viscosity reducer described in the above technical scheme, which includes the following steps:
[0030] Combine dodecyl dimethyl benzyl ammonium chloride, isopropanol, nonylphenol polyoxyethylene ether, ethylene glycol monobutyl ether, disodium ethylenediaminetetraacetic acid, polyoxyethylene octylphenol ether and Water is mixed to obtain thick oil viscosity reducer.
[0031] In the present invention, the mixing sequence is preferably: dissolve disodium ethylenediaminetetraacetate and polyoxyethylene octyl phenol ether in water, and add isopropanol, nonylphenol polyoxyethylene ether, ethyl acetate in sequence. Glycol monobutyl ether, dodecyl dimethyl benzyl ammonium chloride.
[0032] The present invention does not have special restrictions on the mixing method, as long as the conventional mixing method in the field can be used, such as stirring. In the present invention, there is no special limitation...
Example Embodiment
[0044] Example 1
[0045] A heavy oil viscosity reducer is composed of 2.5% dodecyl dimethyl benzyl ammonium chloride, 3.4% isopropanol, 6.7% nonylphenol polyoxyethylene ether, and ethylene glycol monobutyl ether. 2.32%, ethylenediaminetetraacetic acid disodium 3%, polyoxyethylene octyl phenol ether 4% and the balance water.
[0046] First dissolve ethylenediaminetetraacetic acid disodium and polyoxyethylene octyl phenol ether in water, and then add isopropanol, nonylphenol polyoxyethylene ether, ethylene glycol monobutyl ether, dodecyl dimethyl ether in sequence Benzyl ammonium chloride, stir evenly to obtain thick oil viscosity reducer.
[0047] Refer to Table 1 for the viscosity reduction test evaluation results of the prepared heavy oil viscosity reducer under the condition of heavy oil viscosity of 1200 mPa·S; refer to Table 2 to Table 5 for the evaluation results of viscosity reduction test under the condition of heavy oil viscosity of 50000 mPa·S.
Example Embodiment
[0048] Example 2
[0049] A thick oil viscosity reducer is composed of: lauryl dimethyl benzyl ammonium chloride 6.5%, isopropanol 2.4%, nonylphenol polyoxyethylene ether 0.315%, and ethylene glycol monobutyl ether. 5.81%, disodium ethylenediaminetetraacetic acid 1%, polyoxyethylene octyl phenol ether 7% and the balance water.
[0050] First dissolve ethylenediaminetetraacetic acid disodium and polyoxyethylene octyl phenol ether in water, and then add isopropanol, nonylphenol polyoxyethylene ether, ethylene glycol monobutyl ether, dodecyl dimethyl ether in sequence Benzyl ammonium chloride, stir evenly to obtain thick oil viscosity reducer.
[0051] Refer to Table 1 for the viscosity reduction test evaluation results of the prepared heavy oil viscosity reducer under the condition of heavy oil viscosity of 1200 mPa·S; refer to Table 2 to Table 5 for the evaluation results of viscosity reduction test under the condition of heavy oil viscosity of 50000 mPa·S.
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