A kind of preparation method of amphiphilic graphene type oil displacement material

A graphene and oil displacement technology, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve problems affecting oil displacement effect, poor coalescence stability, affecting graphene interface properties, etc.

Active Publication Date: 2022-07-19
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the strong π-π and hydrophobic interactions between graphene particles, the coalescence stability between graphene particles is poor, and graphene particles gradually coalesce under long-term storage or high temperature and high salt conditions. Form larger particles and cause sedimentation, which will significantly affect the interfacial properties of graphene, thereby affecting its oil displacement effect

Method used

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  • A kind of preparation method of amphiphilic graphene type oil displacement material
  • A kind of preparation method of amphiphilic graphene type oil displacement material
  • A kind of preparation method of amphiphilic graphene type oil displacement material

Examples

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specific Embodiment approach

[0031] The experimental methods used in the following examples are conventional methods unless otherwise specified.

[0032] The graphene oxide used in the following examples is an industrial sample produced by Shanghai Yaotian New Material Technology Co., Ltd., and other materials, reagents, etc., can be obtained from commercial sources unless otherwise specified.

[0033] The present invention will be further described below with reference to specific embodiments, but the protection scope of the present invention is not limited thereto.

Embodiment 1

[0035] 5g hexadecylamine is added to 75g kerosene to obtain oil phase, 1g graphene oxide (particle size is 600nm), 7g hydrophilic modifier A (m is 3) are added in 250g deionized water to obtain water phase, oil phase, The water phase was added to a four-neck glass bottle equipped with a stirrer, a nitrogen pipe, a spherical condenser and a thermometer, the stirring speed was controlled at 700 rpm, nitrogen was introduced for 30 min, and 0.5 g of cerium ammonium nitrate and 0.2 g of ethylenediaminetetraacetic acid were added. Disodium, the reaction temperature is controlled at 30°C, and the reaction time is 24h, the product is centrifuged, washed with ethanol, dried and pulverized to obtain an amphiphilic graphene oil-displacing agent.

Embodiment 2

[0037] As described in Example 1, except that the hydrophobic modifier is octadecylamine.

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Abstract

The invention relates to a preparation method of an amphiphilic graphene-type oil displacement material, belonging to the technical field of oilfield chemistry. The Janus amphiphilic nano-graphene material was prepared by asymmetric modification of graphene oxide by interface reaction method; among them, the hydrophobic side modification was realized by the reaction between long-chain organic amines and epoxy groups on the surface of graphene oxide, and the hydrophilic side The modification is achieved by the grafting reaction on the surface of graphene oxide using cerium salts as initiators and compounds containing polyoxyethylene segments as monomers. This nano-graphene oil displacement material has the advantages of low dispersion difficulty, good salt and temperature resistance, excellent long-term dispersion stability, small dosage, and good oil displacement effect, and can be used as oil displacement agent for high temperature and high salt reservoirs.

Description

technical field [0001] The invention relates to a preparation method of an amphiphilic graphene-type oil displacement material, belonging to the technical field of oilfield chemistry. Background technique [0002] Petroleum is one of the most important basic energy sources and raw materials for industrial production and people's lives. Its exploitation and utilization play an important role in the development of modern society. At present, due to the limitation of domestic oil geological reserves and development difficulty, my country's crude oil supply is heavily dependent on imports, which threatens national energy security. Improving crude oil recovery through innovative technological means is one of the important ways to ensure national energy security. Traditional chemical flooding technologies, including polymer flooding, surfactant flooding, compound flooding, etc., have been widely used and achieved certain results. However, in the application process, various chemic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F292/00C08F216/18C08F220/28C09K8/58
CPCC08F292/00C09K8/58C09K2208/10C08F216/18C08F220/286
Inventor 王佳吕开河曹杰孙明波陈英鹏徐国彬王新铭石春晓
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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