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Preparation method of thick oil viscosity reduction and production increase agent, thick oil viscosity reduction and production increase agent and application of thick oil viscosity reduction and production increase agent

A heavy oil and viscosity-reducing technology, which is applied in chemical instruments and methods, production fluids, earth drilling and production, etc., can solve the problems of reducing economic benefits, increasing oil production costs, and high production costs, so as to improve economic benefits, reduce production costs, The effect of simple preparation method

Active Publication Date: 2021-03-16
INST OF RESOURCES COMPREHENSIVE UTILIZATION 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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  • Preparation method of thick oil viscosity reduction and production increase agent, thick oil viscosity reduction and production increase agent and application of thick oil viscosity reduction and production increase agent
  • Preparation method of thick oil viscosity reduction and production increase agent, thick oil viscosity reduction and production increase agent and application of thick oil viscosity reduction and production increase agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The heavy oil viscosity reducing and increasing recovery agent provided in this example is prepared through the following steps:

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

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

[0044] Then add 1kg hydroquinone and 1kg acetaldehyde, and stir at 100°C to continue the reaction for 2h;

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

[0046] Cool down 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 stirring for 2 hours, and after cooling, a viscous oil self-emulsifying visco...

Embodiment 2

[0050] The heavy oil viscosity reducing and increasing recovery agent provided in this example is prepared through the following steps:

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

[0052] Add 0.5 kg of 95% by mass sulfuric acid and 0.5 kg of 60% by mass nitric acid to the above lignin aqueous solution, and stir and react at 100° C. for 2 h;

[0053] Then add 1kg hydroquinone and 1kg acetaldehyde, and stir at 100°C to continue the reaction for 2h;

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

[0055] Cool down 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 stirring for 2 hours, and after cooling, a viscous oil self-emulsifying viscosity reducing agent is obtained.

[0056] Take the obtained thick oil self-emulsifying viscosity...

Embodiment 3

[0058] The heavy oil viscosity reducing and increasing recovery agent provided in this example is prepared through the following steps:

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

[0060] Add 0.5 kg of 95% by mass sulfuric acid and 0.5 kg of 60% by mass nitric acid to the above lignin aqueous solution, and stir and react 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 stir at 100°C to continue the reaction for 2h;

[0062] Cool down 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 stirring for 2 hours, and after cooling, a viscous oil self-emulsifying viscosity reducing agent is obtained.

[0063] Take the obtained thick oil self-emulsifying viscosity-reducing vi...

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Abstract

The invention relates to the technical field of thickened oil production increase, and particularly discloses a preparation method of a thickened oil viscosity-reducing and production-increasing agentand the prepared thickened oil viscosity-reducing and production-increasing agent. The invention provides a method for producing a thickened oil self-emulsifying viscosity-reducing production-increasing agent by using lignin, which comprises the following steps: carrying out oxidative sulfonation modification on lignin, and reacting the modified lignin with aldehyde and phenol to modify; after the reaction is finished, performing neutralizing with alkali, adding amine for modification treatment, then adding a co-emulsifier, and performing stirring and uniform mixing to obtain the product. Thepreparation method is simple, raw materials are wide in source and low in price, and waste is avoided. Tests show that the thick oil viscosity reduction and production increase agent has good self-emulsifying performance on heavy oil, is stable in emulsion and good in high-temperature resistance, and is not obviously attenuated at 200 DEG 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 reduction and production enhancement agent, the prepared heavy oil viscosity reduction and production enhancement agent and its application. Background technique [0002] With the rapid development of the world economy and the decrease of conventional oil reserves, heavy oil, which has 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 reserves of oil and gas resources respectively. The geological reserves of heavy oil are equivalent to conventional oil and gas The sum of the reserves, t...

Claims

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Application Information

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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 COMPREHENSIVE UTILIZATION GUANGDONG ACAD OF SCI
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