Viscosity reducing corrosion inhibitor for viscous oil mining, gathering and transportation and preparation method thereof

A corrosion inhibitor and viscosity-reducing technology, applied in chemical instruments and methods, earthwork drilling, mechanical equipment, etc., can solve the problems of high cost of corrosion-resistant pipes, inability to meet production needs, and rarity, so as to save thin oil consumption, Good viscosity reduction and easy operation

Active Publication Date: 2018-06-15
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the actual application process, the cost of corrosion-resistant pipes is high, pitting corrosion and pitting corrosion will still occur, and the strength can no longer meet the production needs within the safe service life
Although corrosion inhibitors are commonly used, corrosion inhibitors that are resistant to high temperatures in high salinity environments are still rare

Method used

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  • Viscosity reducing corrosion inhibitor for viscous oil mining, gathering and transportation and preparation method thereof
  • Viscosity reducing corrosion inhibitor for viscous oil mining, gathering and transportation and preparation method thereof
  • Viscosity reducing corrosion inhibitor for viscous oil mining, gathering and transportation and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The viscosity-reducing corrosion inhibitor for heavy oil mining and transportation in this embodiment consists of: 5 g of methacrylate-styrene-acrylamide terpolymer, 1.0 g of potassium tridecyl cumene sulfonate, fluorine-containing sunflower Acid imidazoline 1.5g, 100# industrial white oil 92.5g.

[0049] The viscosity reducing corrosion inhibitor of the present embodiment is prepared by the following method:

[0050] 1) Weigh 92.5g of industrial white oil, 5g of methacrylate-styrene-acrylamide terpolymer, 1.5g of fluorine-containing imidazoline decanoate, and 1g of potassium tridecylcumene sulfonate, and put Put it into the reaction kettle, stir evenly, so that the components in the composition are fully mixed, the temperature is controlled at 75°C, the stirring speed is 1500rpm, and the stirring time is 3h;

[0051] 2) After the reaction is over, the material is left to stand in the reactor and cooled until it is cooled to room temperature, and the obtained material ...

Embodiment 2

[0053] The composition of the viscosity-reducing corrosion inhibitor for heavy oil mining and transportation in this embodiment: 7 g of maleic anhydride-vinyl acetate-butyl acrylate copolymer, 0.8 g of sodium pentadecyl cumene sulfonate, and 2 g of imidazoline laurate , 100# industrial white oil 91.2g.

[0054] The viscosity reducing corrosion inhibitor of the present embodiment is prepared by the following method:

[0055] 1) Weigh 91.2g of industrial white oil, 7g of maleic anhydride-vinyl acetate-butyl acrylate copolymer, 2g of imidazoline laurate, and 0.8g of sodium pentadecylcumene sulfonate, and put them into a reaction kettle , stirring evenly, so that the components in the composition are fully mixed, the temperature is controlled at 80°C, the stirring speed is 1500rpm, and the stirring time is 3h;

[0056] 2) After the reaction, the material was left to stand and cooled in the reactor until it was cooled to room temperature, and the obtained material was recorded as ...

Embodiment 3

[0058] The composition of the viscosity-reducing corrosion inhibitor for heavy oil mining and transportation in this embodiment: 8 g of maleic anhydride-vinyl acetate-butyl acrylate copolymer, 1.5 g of sodium nonadecyl aryl sulfonate, 2 g of imidazoline oleate, Cottonseed oil crude oil 88.5g.

[0059] The viscosity reducing corrosion inhibitor of the present embodiment is prepared by the following method:

[0060] 1) Weigh 88.5g cottonseed oil crude oil, 8g maleic anhydride-vinyl acetate-butyl acrylate copolymer, 2g oleic acid imidazoline, 1.5g sodium nonadecyl aryl sulfonate, and put them into the reaction kettle , stirring evenly, so that the components in the composition are fully mixed, the temperature is controlled at 90°C, the stirring speed is 1500rpm, and the stirring time is 2h;

[0061] 2) After the reaction, the material was left to stand and cooled in the reactor until it was cooled to room temperature, and the obtained material was recorded as Viscosity Reducing ...

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Abstract

The invention provides a viscosity reducing corrosion inhibitor for viscous oil mining, gathering and transportation. The viscosity reducing corrosion inhibitor comprises the following components in percent by weight: 5 to 8.5 percent of weak polar polymer, 0.5 to 1.5 percent of alkylaryl sulfonate, 1 to 2 percent of imidazoline derivate, and 88 to 93.5 percent of an organic solvent, wherein the sum of the weight of all the components of the viscosity reducing corrosion inhibitor is 100 percent. The invention further provides a preparation method of the viscosity reducing corrosion inhibitor.The method comprises the following steps: adding the weak polar polymer, alkylaryl sulfonate, imidazoline derivate and organic solvent into a reaction kettle, and uniformly stirring to ensure that allthe components are sufficiently mixed; then performing cooling, so as to obtain the viscosity reducing corrosion inhibitor. The viscosity reducing corrosion inhibitor has the efficacy of reducing viscosity and inhibiting corrosion, can obviously reduce the viscosity of viscous oil and slows down pipeline corrosion.

Description

technical field [0001] The invention belongs to the field of oil field exploitation, in particular, the invention relates to a viscosity-reducing and corrosion-inhibiting agent for heavy oil exploitation, gathering and transportation and a preparation method thereof. Background technique [0002] Heavy oil refers to crude oil with a viscosity greater than 50mPa.s at the reservoir temperature. According to the viscosity, heavy oil can be further divided into ordinary heavy oil (50-10000mPa.s), extra heavy oil (10000-50000mPa.s), super heavy oil ( 50000mPa.s or more). Worldwide, heavy oil reserves are equivalent to ordinary crude oil, and heavy oil accounts for about 56% of crude oil reserves in my country, which is an important resource. Due to the high content of colloid and asphaltene in heavy oil, high viscosity and poor fluidity, it is difficult to mine and the recovery factor is low. Ultra-deep heavy oil refers to heavy oil reservoirs with a reservoir depth of more tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/54C09K8/035F17D1/16
CPCC09K8/035C09K8/54C09K2208/32F17D1/16
Inventor 杨祖国赵海洋高秋英王雷任波刘磊曹畅程仲富范伟东邢钰
Owner CHINA PETROLEUM & CHEM CORP
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