Crude oil pour-point-reducing and viscosity-reducing nanometer base material compound, preparation method thereof and crude oil
A crude oil pour point depressant and crude oil pour point depressant technology, applied in mechanical equipment, pipeline systems, gas/liquid distribution and storage, etc., can solve the problem of increased wax deposition in the pipeline, no pour point depressant found, and the timeliness cannot meet the pipeline requirements. Safe operating conditions, etc.
Inactive Publication Date: 2014-11-19
PETROCHINA CO LTD
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However, there are also the following disadvantages: first, the pour point depressant is targeted, and different types of pour point depressants are suitable for different crude oils. So far, no ideal pour point depressant has been found for Daqing oil; The impact of denaturation is relatively large, and there is a deterioration area of temperature rise; third, the timeliness of dynamic and static stability of waxy crude oil after comprehensive treatment cannot meet the safe operation conditions of the pipeline; fourth, the addition of pour point depressant leads to an increase in the amount of wax deposition in the pipeline
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[0014] In order to deeply understand the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0015] The weight ratio of each component of the crude oil point-point depressant and viscosity-reducing nano-substrate composite provided by the invention is that the range of surface-modified crude oil point-point depressant nano-scale substrate: compound is 10:1~1:10, Among them, the surface-modified crude oil point depressant is obtained by grafting polar groups onto the surface of inorganic nanoparticles, and the compound is selected from ethylene vinyl acetate, maleic anhydride-methacrylate-vinyl acetate ternary Copolymers, phenol, naphthalene.
[0016] Crude oil pour point and viscosity reducing nano base material compound provided by the present invention Daqing crude oil treatment temperature is 58 ℃ ~ 65 ℃, and the dosage is 50 g / t ~ 100 g / t The freezing point of the treated crud...
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The invention discloses a crude oil pour-point-reducing and viscosity-reducing nanometer base material compound, a preparation method thereof and crude oil, and belongs to the technical field of crude oil pour point reducers. The compound comprises surface-modified crude oil pour point reducer nanometer base materials and a compound body; the weight ratio of the surface-modified crude oil pour point reducer nanometer base materials to the compound body is 10:1-1:10; surface-modified crude oil pour point reducers are obtained by grafting polar groups to surfaces of inorganic nanometer particles; and the compound body is selected from ethylene vinyl acetate, maleic anhydride- metacrylic acid ester- vinyl acetate terpolymer, phenol and naphthaline. The invention also provides two preparation methods for the compound. 50g / t-100g / t of the crude oil pour-point-reducing and viscosity-reducing nanometer base material compound is added in the crude oil. The compound, the preparation method thereof and the crude oil can meet technical requirements on application of crude oil in Daqing under the condition of full delivery.
Description
technical field [0001] The invention relates to the technical field of crude oil pour point depressant, in particular to a crude oil pour point depressant and viscosity-reducing nano-substrate composite and a preparation method thereof. Background technique [0002] The crude oil point depressant technology first began in 1931. The commonly used crude oil point depressants mainly include the following types: ethylene-vinyl acetate copolymer and its derivatives, (meth)acrylic acid higher alcohol ester polymer and its derivatives. Derivatives, styrene-maleic anhydride-higher alcohol acrylate copolymer and its derivatives, higher alcohol acrylate-maleic anhydride-vinyl acetate copolymer and its derivatives. These pour point depressants have good pour point depressing effects in waxy crude oil, and play an important role in the transportation process of waxy crude oil in my country. However, there are also the following disadvantages: first, the pour point depressant is targete...
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IPC IPC(8): F17D1/16
Inventor 张冬敏刘广文欧阳欣支树洁李其抚霍连风张立新熊辉徐波
Owner PETROCHINA CO LTD