A kind of heavy oil viscosity reducer and its application

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

Active Publication Date: 2022-07-12
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, and solve the technical problem in the prior art that the viscosity reduction effect of the viscosity reducer is not good when the temperature is low

Method used

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  • A kind of heavy oil viscosity reducer and its application
  • A kind of heavy oil viscosity reducer and its application
  • A kind of heavy oil viscosity reducer and its application

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Embodiment 1

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

Embodiment 2

[0033] The present embodiment proposes a viscosity reducer for heavy oil, which is calculated by mass percentage and includes the following components: azacarbene iron 10wt%, oxidant 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, total 100%; The mass ratio of 20 and Span 20 is 0.15:1.

Embodiment 3

[0035] The present embodiment proposes a viscosity reducer for heavy oil, which is calculated by mass percentage and includes the following components: azacarbene iron 5wt%, oxidant KMnO 4 20 wt %, hydrogen donor methanol 1 wt %, phosphoric acid 10 wt %, emulsifier Tween 20 1 wt %, alkali sodium hydroxide 1 wt %, and the rest are solvent xylene, totaling 100%.

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Abstract

The invention discloses a heavy oil viscosity reducer and an application thereof, belonging to the technical field of heavy oil viscosity reduction and exploitation. The viscosity reducer for heavy oil, calculated by mass percentage, includes the following components: azacarbene iron 5-10wt%, oxidant 15-30wt%, hydrogen donor 1-5wt%, phosphoric acid 5-10wt%, emulsifier 0.5-wt% 1wt%, base 1‑1.5%, and the rest are solvent, totaling 100%. The present invention also includes the application of the above-mentioned heavy oil viscosity reducer in degrading heavy oil. The viscosity reducing agent proposed by the invention can improve the viscosity reduction rate and at the same time increase the proportion of heavy components converted into light components.

Description

technical field [0001] The invention relates to the technical field of viscosity reduction and exploitation of heavy oil, in particular to a heavy oil viscosity reducer 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 use conventional methods for effective recovery. At present, the 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, thermal recovery technology based on steam injection is the most widely used. [0003] In order to ensure the safety in the process of air injection oil recovery and improve the economy of the oil recovery process, the research group of Southwest Petroleum University proposed the low temperature catalytic oxidation oil recovery technology of air injecti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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