Catalysis and emulsification composite viscosity reducer for steam injection recovery of thick oil and preparation method of catalysis and emulsification composite viscosity reducer

A technology of emulsification viscosity reduction and steam injection, which is applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of high density, difficult flow, inconvenient mining, etc., and achieve the effect of wide range and good viscosity reduction effect

Inactive Publication Date: 2014-12-10
NABAI KECHUANG BEIJING TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Heavy oil is an important part of the world's oil and gas resources. It is characterized by hig

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] Example 1

[0022] In this embodiment, 0.05 g of nickel acetylacetonate, 0.06 g of sodium dodecylbenzene sulfonate, and 30 g of water. The specific preparation process is as follows: first dissolve the hydrothermal cracking catalyst nickel acetylacetonate with a small amount of water; then add the emulsifying viscosity reducer sodium dodecylbenzene sulfonate at room temperature, make up the remaining amount of water, mix and stir evenly to obtain the The invented viscosity reducer is added to a high-temperature and high-pressure reactor containing 70g of heavy oil, and after sealing, the temperature is raised to 200°C and kept at a constant temperature for 18 hours, and then the reactor is cooled to room temperature to measure the viscosity of the heavy oil. The rate of viscosity reduction is 98.9% measured by experiment.

[0023] The nickel acetylacetonate in this embodiment is prepared from acetylacetone, nickel chloride and sodium hydroxide as raw materials. Under stirr...

Example Embodiment

[0024] Example 2

[0025] In this embodiment, the nickel acetylacetonate is 0.08 g, the sodium dodecylbenzene sulfonate is 0.07 g, and the water is 30 g. The specific preparation process is as follows: first dissolve the hydrothermal cracking catalyst nickel acetylacetonate with a small amount of water; then add the emulsifying viscosity reducer sodium dodecylbenzene sulfonate at room temperature, make up the remaining amount of water, mix and stir evenly to obtain the The invented viscosity reducer is added to a high-temperature and high-pressure reactor containing 70g of heavy oil, and after sealing, the temperature is raised to 200°C and kept at a constant temperature for 18 hours, and then the reactor is cooled to room temperature to measure the viscosity of the heavy oil. According to the experiment, the viscosity reduction rate is 99.3%.

[0026] The nickel acetylacetonate in this embodiment is prepared from acetylacetone, nickel chloride and sodium hydroxide as raw material...

Example Embodiment

[0027] Example 3

[0028] In this embodiment, 0.1 g of nickel acetylacetonate, 0.09 g of sodium dodecylbenzene sulfonate, and 30 g of water are used. The specific preparation process is as follows: first dissolve the hydrothermal cracking catalyst nickel acetylacetonate with a small amount of water; then add the emulsifying viscosity reducer sodium dodecylbenzene sulfonate at room temperature, make up the remaining amount of water, mix and stir evenly to obtain the The invented viscosity reducer is added to a high-temperature and high-pressure reactor containing 70g of heavy oil, and after sealing, the temperature is raised to 200°C and kept at a constant temperature for 18 hours, and then the reactor is cooled to room temperature to measure the viscosity of the heavy oil. The rate of viscosity reduction is 99.6% measured by experiment.

[0029] The nickel acetylacetonate in this embodiment is prepared from acetylacetone, nickel chloride and sodium hydroxide as raw materials. Und...

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PUM

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Abstract

The invention relates to a catalysis and emulsification composite viscosity reducer for steam injection recovery of thick oil and a preparation method of the catalysis and emulsification composite viscosity reducer. A thick oil catalysis viscosity reduction technology and a thick oil emulsification viscosity reduction technology are combined, and the catalysis and emulsification composite viscosity reducer is suitable for underground steam injection recovery of thick oil or super thick oil and is prepared by compounding acetylacetone nickel serving as a catalyst and sodium dodecyl benzene sulfonate serving as an emulsifier. The catalysis and emulsification composite viscosity reducer comprises the components in percentage by mass: 0.1-0.5% of acetylacetone nickel, 0.1-0.3% of sodium dodecyl benzene sulfonate and the balance of water. The composite viscosity reducer provided by the invention is not only good in viscosity reducing effect, but also wider in application range and better in effect even at a relatively low temperature through compounding. If the composite viscosity reducer provided by the invention reacts with the thick oil at the temperature of 200 DEG C for 18h, the viscosity of the thick oil can be reduced from 218284mPa.s to 3095mPa.s, and the viscosity reduction rate is up to more than 98.5%.

Description

technical field [0001] The invention relates to a composite catalyzed emulsified viscosity reducer for steam injection exploitation of heavy oil and a preparation method thereof, belonging to the chemical field of petroleum exploitation. Background technique [0002] Heavy oil is an important part of the world's oil and gas resources. It is characterized by high density, high freezing point, high viscosity, and difficult flow, making it inconvenient to exploit. Therefore, in order to increase the recovery of crude oil, reducing the freezing point and viscosity of high-condensation and high-viscosity crude oil and improving its fluidity are the keys to solving the problem of heavy oil production and transportation. [0003] Canadian scientists Hyne and others first proposed the concept of hydrothermal cracking reaction in 1983. They found that heavy oil in oil sands undergoes a series of reactions such as desulfurization, dehydrogenation, hydrogenation, ring opening, and wate...

Claims

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Application Information

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IPC IPC(8): C09K8/592
CPCC09K8/592
Inventor 陈启华肖贤明陈启文
Owner NABAI KECHUANG BEIJING TECH DEV
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