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Composite catalysis emulsification viscosity reducer used for viscous oil recovery adopting steam injection and preparation method thereof

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: 2011-07-20
SHANGHAI UNIV
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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 high density, high freezing point, high viscosity, and difficult flow, making it inconvenient to exploit.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 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, and then get the The invented viscosity reducer is added to a high-temperature and high-pressure reaction vessel 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 reaction vessel is cooled to room temperature to measure the viscosity of the heavy oil. According to the experiment, the viscosity reduction rate is 98.9%.

[0022] The nickel acetylacetonate in this embodiment is prepared from acetylacetone, nickel chloride and sodium hydroxide as raw materials. Under ...

Embodiment 2

[0024] 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. The rate of viscosity reduction is 99.3% measured by experiment.

[0025] The nickel acetylacetonate in this embodiment is prepared from acetylacetone, nickel chloride and sodium hydroxide as raw materials. At room temperatu...

Embodiment 3

[0027] In this embodiment, 0.1 g of nickel acetylacetonate, 0.09 g of sodium dodecylbenzene sulfonate, and 30 g of water are taken. 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, and then get the The invented viscosity reducer is added to a high-temperature and high-pressure reaction vessel 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 reaction vessel is cooled to room temperature to measure the viscosity of the heavy oil. According to the experiment, the viscosity reduction rate is 99.6%.

[0028] The nickel acetylacetonate in this embodiment is prepared from acetylacetone, nickel chloride and sodium hydroxide as raw materials...

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Abstract

The invention relates to a composite catalysis emulsification viscosity reducer used for the viscous oil recovery adopting steam injection and a preparation method thereof. The viscosity reducer combines the viscous oil catalytic viscosity reduction technology and the emulsification viscosity reduction technology, is suitable for the underground viscous oil or super viscous oil recovery adopting steam injection and is complexed by using nickel acetylacetonate as catalyst and sodium dodecyl benzene sulfonate as emulsifier. The viscosity reducer comprises the following components by weight percent: 0.1-0.5% of nickel acetylacetonate, 0.1-0.3% of sodium dodecyl benzene sulfonate and the balance water. The viscosity reducer is a composite viscosity reducer and has good viscosity reduction effect; and through complexing, the application range of the viscosity reducer becomes wider and the viscosity reducer has better effect under lower temperature. Tests prove that after the composite viscosity reducer reacts with viscous oil at 200 DEG C for 18h, the viscosity of viscous 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 catalytic emulsification viscosity reducer for heavy oil steam injection exploitation. At the same time, the invention also relates to a preparation method of a composite catalytic emulsification viscosity reducer for heavy oil steam injection exploitation, which belongs to petroleum exploitation chemistry field. Background technique [0002] Heavy oil is an important part of the world's oil and gas resources. High density, high freezing point, high viscosity, and difficulty in flowing are the outstanding characteristics of heavy oil resources and are not convenient for exploitation. Therefore, in order to increase the amount of crude oil produced, reduce the pour point and viscosity of high-pour-point and high-viscosity crude oil, and improve its fluidity is the key to solving the problem of heavy oil exploitation and transportation. [0003] Canadian scientist Hyne and others first proposed the concept of hydrothermal c...

Claims

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Application Information

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IPC IPC(8): C09K8/592C09K8/584
Inventor 杨勇陈启华梁欣相明辉
Owner SHANGHAI UNIV
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