Composite oil displacement agent

A technology for compound oil displacement and glycerin, which is applied in drilling compositions, chemical instruments and methods, etc., can solve the problems of temperature resistance, poor interfacial stability, and insignificant viscosity reduction effect of heavy oil, and achieves high self-strength. , the effect of improving microscopic oil displacement efficiency and good mechanical properties

Inactive Publication Date: 2020-04-17
常州五荣化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a composite oil-displacing agent in view of the shortcomings of commonly used oil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] The preparation method of the composite flooding base material includes the following steps:

[0030] (1) Take 12-20 parts of diatomaceous earth, 4-8 parts of dimer fatty acid, 3-6 parts of hydroquinone, and 5-9 parts of phthalic anhydride at 30~45℃ by mass parts , 30~50 parts of 1,2-propanediol are sealed and mixed in the reactor, protected by nitrogen, heated to 150~170℃, kept and stirred for 25~45min, cooled to 110~130℃, add 4~8% diatomaceous earth The maleic anhydride is heated and mixed for 20-40min, heated to 160-170℃, vacuumed for 2~4h, and the reaction material is obtained. According to mass parts, take 25~45 parts of reaction material and 2~5 parts of terephthalic acid Phenol, 5~8 parts of styrene, 3~7 parts of acrylic acid, 0.1~0.3 parts of catalyst, 18~37 parts of methyl ethyl ketone peroxide are mixed in the reactor, at 35~50℃, magnetic stirring at 350~550r / min for 1~3h , Raise the temperature to 70~85℃, keep it for 2~4h, get the treatment material

[0031] (2)...

Example Embodiment

[0034] Example 1

[0035] Auxiliary materials: Mix starch and silica according to the mass ratio of 2:1 to obtain auxiliary materials.

[0036] Additives: Mix ethyl acetate, glyceryl triphosphate, and magnesium stearate at a mass ratio of 1:3:0.1 to obtain additives.

[0037] Catalyst: Mix naphthenic cobalt and ferrocene at a mass ratio of 3:1 to obtain a catalyst.

[0038] Modified fiber material: Take 10 parts of bamboo nano cellulose, 0.2 part of silane coupling agent KH-550, 1 part of potassium bromide, 35 parts of 15% acetic acid solution by mass, and mix and stir for 35 minutes. Filter, collect the filter residue and dry at 65°C to obtain the modified fiber material.

[0039] Emulsifier: Mix Tween-80 and Span-40 according to the mass ratio of 4:3 to obtain the emulsifier.

[0040] Monomer liquid: Take 7 parts of acrylic acid, 5 parts of methyl methacrylate, 10 parts of acryloxybutyl sulfonic acid, 30 parts of 15% NaOH solution and mix by mass parts to obtain the monomer liquid.

[...

Example Embodiment

[0047] Example 2

[0048] Excipients: Mix starch and silicon dioxide according to a mass ratio of 5:1 to obtain auxiliary materials.

[0049] Additives: Mix ethyl acetate, glyceryl triphosphate, and magnesium stearate at a mass ratio of 1:7:0.1 to obtain additives.

[0050] Catalyst: Mix naphthenic cobalt and ferrocene at a mass ratio of 7:1 to obtain a catalyst.

[0051] Modified fiber material: Take 15 parts of bamboo nano cellulose, 0.5 part of silane coupling agent KH-550, 2 parts of potassium bromide, 50 parts of 15% acetic acid solution by mass, and mix and stir for 60 minutes. Filter, collect the filter residue and dry at 80°C to obtain the modified fiber material.

[0052] Emulsifier: Mix Tween-80 and Span-40 at a mass ratio of 7:3 to obtain an emulsifier.

[0053] Monomer liquid: Take 13 parts of acrylic acid, 9 parts of methyl methacrylate, 15 parts of acryloxybutyl sulfonic acid, 50 parts of 15% NaOH solution and mix by mass parts to obtain a monomer liquid.

[0054] Regulator...

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PUM

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Abstract

The invention relates to a composite oil displacement agent, and belongs to the technical field of crude oil exploitation. Through in-situ polymerization and mechanical blending of diatomite and dimerfatty acid, an adsorption effect on oily components is provided, molecular chain movement is weakened, the stability in the oil displacement process is improved, the temperature resistance and interface stability of the oil displacement agent can be effectively improved, and the viscosity of thickened oil is reduced; lignite and metakaolin are treated, a mixed monomer is grafted, the interfacialtension between the oil displacement agent and crude oil is reduced through the synergistic effect of various raw materials, and the oil washing capacity of the oil displacement agent is improved. According to the invention, the defects of poor temperature resistance, poor interface stability and the like of a conventional common oil displacement agent are overcome, and the problem of unobvious viscosity reduction effect on thickened oil is solved.

Description

technical field [0001] The invention relates to a composite oil displacement agent, which belongs to the technical field of crude oil exploitation. Background technique [0002] In recent years, with the increasing demand for oil and the decreasing production of conventional crude oil, the development of heavy oil is deepening year by year. In order to improve heavy oil recovery, steam flooding has become a large-scale industrial application of heavy oil thermal recovery technology at home and abroad. The characteristics of heavy oil reservoirs such as deep burial, high steam injection pressure, low dryness, and wide hot water area have seriously affected the oil displacement effect of steam flooding. The application effect of steam flooding has achieved the goal of greatly increasing the recovery factor. The development of steam flooding requires high temperature resistance of the oil displacement agent. The temperature range of the steam sweep zone is 100°C-220°C, and th...

Claims

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Application Information

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IPC IPC(8): C09K8/588
CPCC09K8/588
Inventor 林正脉
Owner 常州五荣化工有限公司
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