A preparation method of a heavy oil viscosity-reducing and production-increasing agent, a heavy oil viscosity-reducing and production-increasing agent and its application

A technology for reducing viscosity and heavy oil, applied in chemical instruments and methods, production fluids, earthwork drilling, etc. Simple preparation method

Active Publication Date: 2022-05-27
INST OF RESOURCES UTILIZATION & RARE EARTH DEV GUANGDONG ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the production cost of the common heavy oil viscosity-reducing and enhancing-recovery agents is relatively high, which increases the cost of oil recovery and correspondingly reduces the economic benefits. Therefore, the development of low-cost heavy-oil viscosity-reducing and enhancing-recovery agents will be of great significance to the recovery of heavy oil

Method used

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  • A preparation method of a heavy oil viscosity-reducing and production-increasing agent, a heavy oil viscosity-reducing and production-increasing agent and its application
  • A preparation method of a heavy oil viscosity-reducing and production-increasing agent, a heavy oil viscosity-reducing and production-increasing agent and its application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The viscosity-reducing and recovery-increasing agent for heavy oil provided by the present embodiment is obtained through the following steps:

[0042] In the reactor, add 20kg of water, then add 10kg of lignin, and stir to obtain an aqueous lignin solution;

[0043] Add 0.5 kg of 95 mass % sulfuric acid and 0.5 kg of 60 mass % nitric acid to the above lignin aqueous solution, and stir and react at 100° C. for 2 h;

[0044] Then add 1kg of diol and 1kg of acetaldehyde, and continue to react for 2h under stirring at 100°C;

[0045] Then continue to add 1kg of sodium hydroxide and 0.5kg of sodium carbonate, stir evenly, then add 1kg of ethylenediamine, and continue to react at 100°C for 2h;

[0046] Cool to 60°C, continue to add 1 kg of fatty alcohol polyoxyethylene alcohol sodium sulfate, 0.5 kg of fatty alcohol polyoxyethylene ether and 0.5 kg of fatty acid potassium, and continue stirring for 2 hours.

[0047] The obtained self-emulsifying viscosity-reducing and reco...

Embodiment 2

[0050] The viscosity-reducing and recovery-increasing agent for heavy oil provided by the present embodiment is obtained through the following steps:

[0051] In the reactor, add 20kg of water, then add 10kg of lignin, and stir to obtain an aqueous lignin solution;

[0052] To the above lignin aqueous solution, 0.5 kg of 95 mass % sulfuric acid and 0.5 kg of 60 mass % nitric acid were added, and the reaction was stirred at 100° C. for 2 h;

[0053] Then add 1kg of diol and 1kg of acetaldehyde, and continue to react for 2h under stirring at 100°C;

[0054] Then continue to add 1kg sodium hydroxide and 0.5kg sodium carbonate, stir evenly;

[0055] Cool to 60°C, continue to add 1 kg of fatty alcohol polyoxyethylene alcohol sodium sulfate, 0.5 kg of fatty alcohol polyoxyethylene ether and 0.5 kg of fatty acid potassium, continue to stir for 2 hours, and after cooling, the heavy oil self-emulsifying viscosity reducing and recovery enhancing agent is obtained.

[0056] The obtaine...

Embodiment 3

[0058] The viscosity-reducing and recovery-increasing agent for heavy oil provided by the present embodiment is obtained through the following steps:

[0059] In the reactor, add 20kg of water, then add 10kg of lignin, and stir to obtain an aqueous lignin solution;

[0060] To the above lignin aqueous solution, 0.5 kg of 95 mass % sulfuric acid and 0.5 kg of 60 mass % nitric acid were added, and the reaction was stirred at 100° C. for 2 h;

[0061] Then continue to add 1kg of sodium hydroxide and 0.5kg of sodium carbonate, stir evenly, then add 1kg of ethylenediamine, and continue to react at 100°C for 2h;

[0062] Cool to 60°C, continue to add 1 kg of fatty alcohol polyoxyethylene alcohol sodium sulfate, 0.5 kg of fatty alcohol polyoxyethylene ether and 0.5 kg of fatty acid potassium, continue to stir for 2 hours, and after cooling, the heavy oil self-emulsifying viscosity reducing and recovery enhancing agent is obtained.

[0063] The obtained self-emulsifying viscosity-red...

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Abstract

The invention relates to the technical field of heavy oil production enhancement, and specifically discloses a preparation method of a heavy oil viscosity reduction and production enhancement agent and the prepared heavy oil viscosity reduction and production enhancement agent. The method provided by the present invention for producing heavy oil self-emulsifying viscosity reducing agent by using lignin firstly carries out oxidative sulfonation modification of lignin, and then reacts with aldehyde and phenol for modification; after the reaction is completed, it is neutralized with alkali, And add amine for modification treatment, then add co-emulsifier and stir to mix. The preparation method of the invention is simple, the source of raw materials is wide and cheap, and there is no waste. According to the test, it has good self-emulsifying performance and stable emulsion for heavy oil, and has good high temperature resistance performance, and there is no obvious attenuation at 200 °C.

Description

technical field [0001] The invention relates to the technical field of heavy oil production enhancement, in particular to a preparation method of a heavy oil viscosity reducing and recovery increasing agent, the prepared heavy oil viscosity reducing and recovery increasing agent, and applications. Background technique [0002] With the rapid development of the world economy and the reduction of conventional oil reserves, heavy oil with huge exploration potential and broad development prospects has become one of the important energy resources that has attracted much attention in the 21st century. The geological reserves of heavy oil in the world are currently about more than 1 trillion tons. The geological reserves of heavy oil, conventional crude oil and natural gas account for 53%, 25% and 22% of the total oil and gas resources, respectively. The geological reserves of heavy oil are equivalent to conventional oil and gas. The sum of reserves is abundant. With the advent of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/584E21B43/22C08H7/00
CPCC09K8/584E21B43/16C08H6/00
Inventor 王在华张军冯嘉颖刘牡丹刘建国
Owner INST OF RESOURCES UTILIZATION & RARE EARTH DEV GUANGDONG ACAD OF SCI
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