Thickened oil viscosity reducer and application thereof

A technology of viscosity reducer and heavy oil, applied in wellbore/well components, production fluids, iron-organic compounds, etc., can solve the problems of poor viscosity reduction effect of viscosity reducer

Active Publication Date: 2021-08-24
YANGTZE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the above technical deficiencies, provide a thick oil viscosity reducer and its application

Method used

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  • Thickened oil viscosity reducer and application thereof
  • Thickened oil viscosity reducer and application thereof
  • Thickened oil viscosity reducer and application thereof

Examples

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Effect test

Embodiment 1

[0031] This embodiment proposes a viscous reducer for heavy oil, which includes the following components based on mass percentage: azacarbene iron 8wt%, oxidant tert-butyl hydroperoxide 15wt%, hydrogen donor methanol 3wt%, phosphoric acid 5wt%, The mixture of emulsifier Tween 20 and Span 20 is 0.5wt%, alkali sodium hydroxide is 1wt%, and the rest is solvent benzene, the total is 100%; the mass ratio of Tween 20 and Span 20 is 0.12:1.

Embodiment 2

[0033] This embodiment proposes a thick oil viscosity reducer, which includes the following components according to the mass percentage: azacarbene iron 10wt%, oxidizing agent KIO 4 30 wt%, hydrogen donor ethanol 5wt%, phosphoric acid 6wt%, emulsifier Tween 20 and Span 20 mixture 0.8wt%, alkali sodium hydroxide 1.2wt%, the rest is solvent toluene, 100% in total; of which Tween The mass ratio of 20 and Span 20 is 0.15:1.

Embodiment 3

[0035] This embodiment proposes a thick oil viscosity reducer, which includes the following components according to the mass percentage: azacarbene iron 5wt%, oxidant KMnO 4 20 wt%, hydrogen donor methanol 1wt%, phosphoric acid 10wt%, emulsifier Tween 20 1wt%, alkali sodium hydroxide 1wt%, and the rest is solvent xylene, 100% in total.

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Abstract

The invention discloses a thickened oil viscosity reducer and an application thereof, and belongs to the technical field of viscosity reduction exploitation of thickened oil. The thickened oil viscosity reducer comprises the following components in percentage by mass: 5-10 wt% of N-heterocyclic carbene iron, 15-30 wt% of an oxidant, 1-5 wt% of a hydrogen donor, 5-10 wt% of phosphoric acid, 0.5-1 wt% of an emulsifier, 1-1.5 wt% of an alkali and the balance being a solvent, wherein the total percentage is 100%. The invention further discloses an application of the thickened oil viscosity reducer in degradation of thickened oil. According to the viscosity reducer provided by the invention, the proportion of heavy components converted into light components is increased while the viscosity reduction rate is increased.

Description

technical field [0001] The invention relates to the technical field of viscosity-reducing exploitation of heavy oil, in particular to a viscosity-reducing agent for heavy oil and its application. Background technique [0002] The characteristics of heavy oil, such as high viscosity, high freezing point and poor fluidity in the formation, make it difficult to effectively recover by conventional methods. At present, heavy oil recovery technology mainly includes cold recovery technology, thermal recovery technology and composite recovery technology combining cold recovery and thermal recovery. Among these mining technologies, steam injection-based thermal recovery technology is the most widely used. [0003] In order to ensure the safety of the air injection oil recovery process and improve the economics of the oil recovery process, the research group of Southwest Petroleum University proposed the low-temperature catalytic oxidation oil recovery technology of air injection in ...

Claims

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Application Information

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IPC IPC(8): C09K8/58C09K8/592C07F15/02E21B43/22
CPCC09K8/58C09K8/592C07F15/02E21B43/16
Inventor 颜学敏吴配月杨欢李颢马兆菲程仲富邓飞
Owner YANGTZE UNIVERSITY
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