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Temperature-responsive self-lubricating hydrogel profile control agent and preparation method thereof

A hydrogel profile control agent and temperature-responsive technology, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of poor deep profile control effect and low water flooding wave efficiency, and achieve strong temperature resistance , The preparation method is simple, the effect of high plugging strength

Active Publication Date: 2020-08-14
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a method for preparing a temperature-responsive self-lubricating hydrogel profile control agent, which can make the gel profile control agent have good temperature resistance and self-lubricating performance at the same time, thereby solving the problem of gel profile control. Due to the high frictional resistance of the profiling agent in the high temperature reservoir, the deep profile control effect is poor and the water drive sweep efficiency is low

Method used

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  • Temperature-responsive self-lubricating hydrogel profile control agent and preparation method thereof
  • Temperature-responsive self-lubricating hydrogel profile control agent and preparation method thereof
  • Temperature-responsive self-lubricating hydrogel profile control agent and preparation method thereof

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Effect test

Embodiment 1

[0052] The experimental steps for the preparation of temperature-responsive self-lubricating hydrogel profile control agent are as follows:

[0053] (1) At 70°C±10°C, 0.3g polyacrylamide (PAM, Shanghai Macklin Biochemical Technology Co., Ltd.), 0.5g furfurylamine-bisphenol A diglycidyl ether oligomer (FA-BGPP, self-made) , 0.1g hexamethylenetetramine-hydroquinone crosslinking agent (HMTA-HQ, self-made) and 0.01g N,N'-(4,4'-methylenediphenyl)bismaleimide Amine (BM, Shanghai Macklin Biochemical Technology Co., Ltd.) was added into 100 mL of water and stirred to dissolve to obtain a reaction liquid.

[0054] (2) Stir the reaction solution at a stirring rate of 500rpm until the polymer in it swells evenly to obtain a sol, and then seal the sol and place it in an oven at 70°C±10°C for 48 hours to obtain a temperature-responsive self-lubricating Hydrogel profile control agent PAFB-1.

Embodiment 2

[0056] The experimental steps for the preparation of temperature-responsive self-lubricating hydrogel profile control agent are as follows:

[0057] (1) At 70°C±10°C, 0.5g polyacrylamide (PAM, Shanghai Macklin Biochemical Technology Co., Ltd.), 0.7g furfurylamine-bisphenol A diglycidyl ether oligomer (FA-BGPP, self-made) , 0.3g hexamethylenetetramine-hydroquinone (HMTA-HQ, homemade) and 0.03g N,N'-(4,4'-methylenediphenyl) bismaleimide (BM , Shanghai McLean Biochemical Technology Co., Ltd.) was added into 100 mL of water and stirred to dissolve to obtain a reaction solution.

[0058] (2) Stir the reaction solution at a stirring rate of 500rpm until the polymer in it swells evenly to obtain a sol, and then seal the sol and place it in an oven at 70°C±10°C for 48 hours to obtain a temperature-responsive self-lubricating Hydrogel profile control agent PAFB-2.

Embodiment 3

[0060] The experimental steps for the preparation of temperature-responsive self-lubricating hydrogel profile control agent are as follows:

[0061] (1) At 70°C±10°C, 0.7g polyacrylamide (PAM, Shanghai Macklin Biochemical Technology Co., Ltd.), 0.9g furfurylamine-bisphenol A diglycidyl ether oligomer (FA-BGPP, self-made) , 0.5g hexamethylenetetramine-hydroquinone (HMTA-HQ, homemade) and 0.05g N,N'-(4,4'-methylenediphenyl)bismaleimide (BM , Shanghai McLean Biochemical Technology Co., Ltd.) was added into 100 mL of water and stirred to dissolve to obtain a reaction solution.

[0062] (2) Stir the reaction solution at a stirring rate of 500rpm until the polymer in it swells evenly to obtain a sol, and then seal the sol and place it in an oven at 70°C±10°C for 48 hours to obtain a temperature-responsive self-lubricating Hydrogel profile control agent PAFB-3.

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Abstract

The invention discloses a temperature-responsive self-lubricating hydrogel profile control agent and a preparation method thereof. By a one-pot process, in a water environment, a hydrophilic polymer matrix undergoes an amide-hydroxyl dehydration condensation chemical cross-linking reaction under the action of a cross-linking agent A to generate a high-strength temperature-resistant polymer network, meanwhile, the furfuryl amine-bisphenol A diglycidyl ether oligomer undergoes a Diels-Alder chemical cross-linking reaction under the action of a cross-linking agent B to generate a dynamic covalentnetwork, and the two networks are compounded to generate the temperature-responsive self-lubricating hydrogel profile control agent. The profile control agent has good temperature resistance and self-lubricating performance at the same time, and therefore the problems that the gel profile control agent is poor in deep profile control effect and low in water flooding sweep efficiency due to high friction resistance in a high-temperature oil reservoir are solved.

Description

technical field [0001] The invention belongs to the field of petroleum exploitation, and relates to a temperature-responsive self-lubricating hydrogel profile control agent and a preparation method and application thereof. Background technique [0002] Reservoir heterogeneity is one of the main reasons restricting its water flooding efficiency. With the prolongation of the water flooding time, the crude oil in the shallow formation is gradually displaced, and the permeability of the formation increases significantly, forming a high permeability layer, resulting in a larger gap in permeability between formations at different depths, and the subsequent water flow often passes through the high permeability layer. Layer formation channeling, seriously restricting the effect of oil recovery enhancement. To solve this problem, researchers have developed a variety of materials to seal the high-permeability layer, among which gel is the most cost-effective. At present, the commonl...

Claims

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Application Information

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IPC IPC(8): C09K8/512C09K8/88C08J3/075C08J3/24C08L33/26C08L63/02
CPCC09K8/512C09K8/5086C09K8/887C09K8/885C08J3/075C08J3/246C09K2208/28C08J2333/26C08J2463/02
Inventor 张淮浩柏永青练越王大为侯双月赵静
Owner YANGZHOU UNIV
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