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ASP ternary composite oil displacement agent replacing inorganic base with polyether amine and preparation method thereof

A ternary compound and polyether amine technology, applied in the direction of drilling compositions, chemical instruments and methods, etc., can solve problems that do not conform to the development concept of green chemistry, toxicity, etc., achieve low toxicity, inhibit dispersion, and protect formation rocks structure effect

Active Publication Date: 2019-11-08
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The ethanolamine flooding system overcomes the problems of clay dispersion, viscosity, and viscoelasticity reduction, but it has certain toxicity and does not conform to the development concept of green chemistry

Method used

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  • ASP ternary composite oil displacement agent replacing inorganic base with polyether amine and preparation method thereof
  • ASP ternary composite oil displacement agent replacing inorganic base with polyether amine and preparation method thereof
  • ASP ternary composite oil displacement agent replacing inorganic base with polyether amine and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Based on 100 parts by weight, weigh 0.1 part of polyetheramine D230, 0.2 part of petroleum sulfonate, 0.1 part of polyacrylamide, and the rest is water. Dissolve polyacrylamide in water, set the speed of magnetic stirring at 800-1000 rpm, and stir for 24 hours. After the polyacrylamide is fully stretched and the viscosity of the polyacrylamide aqueous solution is uniform, the polyacrylamide aqueous solution mother liquor is obtained. . Add polyetheramine or inorganic base and surfactant to the polymer aqueous solution mother liquor, set the stirring speed at 100-200 rpm, and mix for 1-2 hours to obtain the ASP ternary compound containing organic base polyetheramine D230 oil repellant.

[0028] The ASP three-component oil displacement agent prepared by polyetheramine D230 was used for crude oil emulsification experiment. as attached figure 1 As shown in (a), the organic base polyetheramine D230 system can emulsify crude oil well after five times of simulated emulsific...

Embodiment 2

[0033] Based on 100 parts by weight, respectively weigh 2 parts of polyetheramine D400, 5 parts of sodium dodecylsulfonate, 0.05 part of polyacrylamide, and the remaining content is water. Dissolve polyacrylamide in water, set the speed of magnetic stirring at 800-1000 rpm, and stir for 24 hours. After the polyacrylamide is fully stretched and the viscosity of the polyacrylamide aqueous solution is uniform, the polyacrylamide aqueous solution mother liquor is obtained. . Add polyetheramine D400 and surfactant to the polymer aqueous solution mother liquor, set the stirring speed at 100-200 rpm, and mix for 1-2 hours to obtain the ASP three-component composite flooding oil containing organic base polyetheramine D400 agent.

[0034] The ASP three-component oil displacement agent prepared by polyetheramine D400 was used for crude oil emulsification experiment. Such as figure 1 As shown in (b), the organic base polyetheramine D400 system can emulsify crude oil well after five ti...

Embodiment 3

[0039] Based on 100 parts by weight, respectively weigh 5 parts of polyetheramine T403, 2 parts of sodium dodecylbenzenesulfonate, 0.01 part of polyacrylamide, and the remaining content is water. Dissolve polyacrylamide in water, set the speed of magnetic stirring at 800-1000 rpm, and stir for 24 hours. After the polyacrylamide is fully stretched and the viscosity of the polyacrylamide aqueous solution is uniform, the polyacrylamide aqueous solution mother liquor is obtained. . Add polyetheramine T403 and surfactant to the polymer aqueous solution mother liquor, set the stirring speed at 100-200 rpm, and mix for 1-2 hours to obtain ASP three-component composite flooding containing organic base polyetheramine T403. Oil agent.

[0040] The ASP three-component oil displacement agent prepared by polyetheramine T403 was used for crude oil emulsification experiment. Such as figure 1 As shown in (c), the organic base polyetheramine T403 system can emulsify crude oil well after fiv...

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Abstract

The invention relates to an ASP ternary composite oil displacing agent with polyether amine instead of inorganic base and a preparation method of the ASP ternary composite oil displacing agent. The preparation method comprises the following steps: in 100 parts by weight, weighing 0.1-5 parts of polyether amine, 0.2-5 parts of surfactant, 0.01-0.1 part of polymer and the balance of water; dissolving the polymer in the water, and stirring, so that the form of the polymer is fully extended to obtain an aqueous polymer solution with uniform viscosity, wherein the aqueous polymer solution is takenas a mother solution; adding polyether amine and the surfactant into the mother solution, stirring and mixing to obtain the ASP ternary composite oil displacing agent containing organic base polyetheramine. Organic base polyether amine is utilized for replacing the common inorganic base in a traditional oil displacing agent, so that a stratum rock structure can be effectively protected, the dispersion of clay particles in an entry well fluid is inhibited, the influence to viscosity and viscoelasticity of an oil displacing system is little, the added organic base reacts with acidic materials such as naphthenic acid in crude oil to generate a surface active material synergetic with the additional surfactant, and oil-water interfacial tension can be reduced to ultra-low.

Description

technical field [0001] The invention relates to an ASP composite oil flooding system using polyetheramine instead of inorganic alkali and a preparation method thereof, belonging to the field of oil field chemistry. Background technique [0002] Petroleum is a kind of mineral fluid stored in the ground, and it is an indispensable energy source for the world's industrialization process. In recent decades, human demand for oil has increased exponentially. Especially in my country, on the one hand, due to the rapid development of the national economy, the growth rate of oil demand is greater than ever before; , it is becoming more and more difficult to exploit oil, the rate of decline in production is gradually increasing, and the reserves of reserve resources are seriously insufficient. On the whole, the contradiction between supply and demand is becoming increasingly prominent. [0003] In order to alleviate the increasingly prominent contradiction between supply and demand, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/58
CPCC09K8/58
Inventor 孙德军胡润涛王增资冯宗涛
Owner SHANDONG UNIV