Nano-composite material high-wax thick oil pour point-depressing and viscosity-reducing agent and preparation method thereof

A nano-composite material and viscosity reducing agent technology, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of poor low temperature fluidity of heavy oil, and achieve simple and easy control of production process, lower freezing point and good effect. Effect

Active Publication Date: 2020-03-27
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a nanocomposite high-wax heavy oil pour point and viscosity reducer and a preparation method thereof. Improve the low-temperature fluidity of crude oil, the producti

Method used

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  • Nano-composite material high-wax thick oil pour point-depressing and viscosity-reducing agent and preparation method thereof
  • Nano-composite material high-wax thick oil pour point-depressing and viscosity-reducing agent and preparation method thereof
  • Nano-composite material high-wax thick oil pour point-depressing and viscosity-reducing agent and preparation method thereof

Examples

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Embodiment 1

[0031] A preparation method of a nanocomposite high-wax heavy oil pour point and viscosity reducer, comprising the following steps:

[0032] (1) Add 1mL of KH570 into a mixed solvent of absolute ethanol and distilled water at a volume ratio of 50:1 and stir to dissolve, then add 2.5g of nano-silica, stir and dissolve, then stir and react in a constant temperature oil bath at 80°C for 3 hours, Then centrifuge in sequence, wash with absolute ethanol for 5 times, and dry at 65°C for 12 hours to obtain modified nano-silica;

[0033] (2) Add stearyl methacrylate, maleic anhydride, styrene, and acrylamide to xylene at a molar ratio of 3:1:2:0.5, and then add the modified nano Silica 2.5g, stir and heat to 60°C, then heat up to 80°C for 30min and react for 3h, finally add excess ethanol for precipitation, filter and dry at 60°C to constant weight to obtain nanocomposite material with high waxy consistency Oil pour point and viscosity reducer.

Embodiment 2

[0035] A preparation method of a nanocomposite high-wax heavy oil pour point and viscosity reducer, comprising the following steps:

[0036] (1) Add 1mL of KH570 into a mixed solvent of absolute ethanol and distilled water at a volume ratio of 50:1 and stir to dissolve, then add 2.5g of nano-silica, stir and dissolve, then stir and react in a constant temperature oil bath at 80°C for 3 hours, Then centrifuge in sequence, wash with absolute ethanol for 5 times, and dry at 65°C for 12 hours to obtain modified nano-silica;

[0037] (2) Add stearyl methacrylate, maleic anhydride, styrene, and acrylamide into xylene at a molar ratio of 5:1:2:0.5, and then add the modified nano Silica 2.5g, stirred and heated to 60°C, then heated to 80°C for 2-4 hours after 30 minutes, finally added excess ethanol for precipitation, filtered and dried at 60°C to constant weight to obtain a nanocomposite material with high Pour point and viscosity depressant for waxy thick oil.

Embodiment 3

[0039] A preparation method of a nanocomposite high-wax heavy oil pour point and viscosity reducer, comprising the following steps:

[0040] (1) Add 1mL of KH570 into a mixed solvent of absolute ethanol and distilled water at a volume ratio of 50:1 and stir to dissolve, then add 2.5g of nano-silica, stir and dissolve, then stir and react in a constant temperature oil bath at 80°C for 3 hours, Then centrifuge in sequence, wash with absolute ethanol for 5 times, and dry at 65°C for 12 hours to obtain modified nano-silica;

[0041] (2) Add octadecyl methacrylate, maleic anhydride, styrene, and acrylamide into xylene at a molar ratio of 8:1:2:0.5, and then add the modified nano Silica 2.5g, stirred and heated to 60°C, then heated to 80°C for 2-4 hours after 30 minutes, finally added excess ethanol for precipitation, filtered and dried at 60°C to constant weight to obtain a nanocomposite material with high Pour point and viscosity depressant for waxy thick oil.

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Abstract

The invention provides a nano-composite material high-wax thick oil pour point-depressing and viscosity-reducing agent and a preparation method thereof. The pour point-depressing and viscosity-reducing agent comprises nano-silica, a silane coupling agent, octadecyl methacrylate, maleic anhydride, styrene and acrylamide; a mass/volume ratio of the nano-silica to the silane coupling agent is (2-3):1g/mL, and a molar ratio of octadecyl methacrylate to maleic anhydride to styrene to acrylamide is (3-8):1:2:1; and a mole/volume ratio of octadecyl methacrylate to the silane coupling agent is (3-8):1 mol/mL. The invention also provides a preparation method of the pour point-depressing and viscosity-reducing agent. The pour point-depressing and viscosity-reducing agent has the advantages of pourpoint depressing and viscosity reducing effects, good effects, improvement of the low-temperature fluidity of crude oil, simple and easily controlled production processes, effectiveness in solving ofthe problems that a pour point depressant and a viscosity reducer cannot be considered at the same time and the low-temperature fluidity of thickened oil is poor, and wide application prospect.

Description

technical field [0001] The invention relates to the technical field of pour point depressant and its preparation, in particular to a nanocomposite material high wax heavy oil pour point and viscosity depressant and a preparation method thereof. Background technique [0002] With the continuous exploitation of oil resources, the reserves of light crude oil are rapidly decreasing, and unconventional oil and gas resources such as heavy oil have attracted more and more attention. Heavy oil is an important part of the world's oil and gas resources. The complex composition makes the density, viscosity, and freezing point of heavy oil much higher than that of light crude oil. At room temperature, heavy oil is solidified and has extremely poor fluidity. Therefore, there are great problems in the exploitation and transportation of heavy oil. How to effectively transport heavy oil with high viscosity and high freezing point is an important problem that the petrochemical industry urge...

Claims

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Application Information

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IPC IPC(8): C09K8/588C08F220/18C08F222/08C08F212/08C08F220/56
CPCC09K8/588C08F220/18C09K2208/10
Inventor 毛金成亢智杨小江林冲毛金桦
Owner SOUTHWEST PETROLEUM UNIV
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