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Active catalytic viscosity reducer for viscous oil recovery, and preparation method and application thereof

A technology for catalytic viscosity reduction and catalyst, applied in chemical instruments and methods, preparation of organic compounds, preparation of ethers, etc., can solve problems such as poor viscosity reduction effect of viscosity reducers, and achieve good viscosity reduction effect and improved viscosity reduction rate. Effect

Active Publication Date: 2015-08-12
YANGTZE UNIVERSITY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides an active catalytic viscosity reducer for heavy oil development and its preparation method and application, which overcomes the above-mentioned deficiencies in the prior art, and can effectively Solve the problem of poor viscosity reduction effect of existing viscosity reducers

Method used

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  • Active catalytic viscosity reducer for viscous oil recovery, and preparation method and application thereof

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Embodiment 1

[0017] Embodiment 1, the active type catalytic viscosity reducer is used for the development of heavy oil, and the general structural formula is: [R-O-(EO) m CH 2 CO 2 ] 2 M, wherein, R is a linear or branched alkyl group with 12 to 18 carbon atoms, EO is an oxyethylene group, m is the number of oxyethylene, and m is an integer between 2 and 6; M is a nickel ion or a manganese ion Or copper ions or zinc ions.

Embodiment 2

[0018] Example 2, the heavy oil is obtained by the following preparation method using an active catalytic viscosity reducer: in the first step, add a long-chain fatty alcohol and a catalyst in the reactor and mix evenly, and the catalyst is 0.3 to Add in 1% amount, after adding long-chain fatty alcohol and catalyst, N 2 Purge the reactor to replace the air and evacuate it. Under an absolute pressure of 5kPa to 30kPa, add 2mol to 6mol of ethylene oxide to 1mol of long-chain fatty alcohol, and feed ethylene oxide into the reactor and mix well. Stir the reaction at a temperature of 120°C to 140°C for 4h to 8h, and the fatty alcohol ether is obtained after the reaction; in the second step, based on 0.1moL of fatty alcohol ether, take 0.1moL of fatty alcohol ether and put it in a container, add 20mL to 40mL of iso Propanol or absolute ethanol, 0.20moL to 0.26moL sodium hydroxide stirred reaction for 0.5h to 3h, 0.1moL to 0.13moL chloroacetic acid was made into a chloroacetic aci...

Embodiment 3

[0019] Example 3, the heavy oil is obtained by the following preparation method using an active catalytic viscosity reducer: in the first step, add a long-chain fatty alcohol and a catalyst in the reactor and mix evenly, and the catalyst is 0.3 or Add in 1% amount, after adding long-chain fatty alcohol and catalyst, N 2 Purge the reactor to replace the air and evacuate it. Under the absolute pressure of 5kPa or 30kPa, add 2mol or 6moL of ethylene oxide to 1mol of long-chain fatty alcohol, feed ethylene oxide into the reactor and mix evenly. Stir the reaction at 120°C or 140°C for 4h or 8h, and obtain fatty alcohol ether after the reaction; in the second step, take 0.1moL fatty alcohol ether into the container, add 20mL or 40mL iso Propanol or absolute ethanol, 0.20moL or 0.26moL sodium hydroxide stirred reaction for 0.5h or 3h, 0.1moL or 0.13moL chloroacetic acid was made into a 20% or 50% mass percentage of chloroacetic acid aqueous solution, after stirring the reaction, add...

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Abstract

The invention relates to the technical filed of viscosity reducers, and relates to an active catalytic viscosity reducer for viscous oil recovery, and a preparation method and an application thereof. The structural general formula of the active catalytic viscosity reducer for viscous oil recovery is [R-O-(EO)mCH2CO2]2M, wherein R is a C12-18 linear or branched alkyl group, EO is an oxyethylene group, m is the number of the oxyethylene group, and m is an integer between 2 and 6; and M is a nickel ion or a manganese ion or a copper ion or a zinc ion. The viscosity reduction rate of the active catalytic viscosity reducer for viscous oil recovery obtained in the invention is greatly higher than that of viscosity reducers in the prior art, so the viscosity reduction effect of the active catalytic viscosity reducer for viscous oil recovery is good; and the active catalytic viscosity reducer for viscous oil recovery is suitable for viscosity reduction of stratum of well steam injection wells, and is also suitable for high temperature steam catalytic oil displacement.

Description

technical field [0001] The invention relates to the technical field of viscosity reducers, and relates to an active catalytic viscosity reducer for heavy oil development and its preparation method and application. Background technique [0002] Due to the high content of colloidal asphaltene in heavy oil, it has high viscosity, high density and poor fluidity, which brings great difficulties to its exploitation and transportation. At present, the main methods of heavy oil production are thin oil blending, emulsification and viscosity reduction, and thermal extraction. Thin oil blending and emulsification viscosity reduction are mainly used for wellbore viscosity reduction. For ultra-heavy oil and extra-heavy oil, steam huff and puff or Steam flooding is carried out, although the method of injecting heat medium can reduce the viscosity of crude oil, but after a short period of production after steam injection, the formation temperature will drop greatly, and the viscosity of he...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/592C07C51/41C07C59/125
CPCC07C41/03C07C51/367C07C51/412C09K8/592C07C59/125C07C43/11
Inventor 郑延成朱伽周爱莲王亮
Owner YANGTZE UNIVERSITY
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