Resin plugging agent based on emulsion deformation, preparation method and applicationof resin plugging agent

An emulsion and resin technology, applied in chemical instruments and methods, drilling compositions, etc., can solve problems such as high viscosity, poor injection performance, and limited resin application.

Pending Publication Date: 2021-01-22
XI'AN PETROLEUM UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when resin is used as a profile control agent, due to its high viscosity and poor injection performance, the application of resin as a profile control agent is severely limited.
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Method used

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Examples

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Embodiment 1

[0048] 1. This embodiment relates to a resin plugging agent based on an emulsion modification, which consists of an epoxy resin system, an emulsifier system and a brine system;

[0049] Wherein: each component is formed by following weight percentage:

[0050] Epoxy resin system 40%;

[0051] Emulsifier system 10%;

[0052] Saline system 50%.

[0053] 1. Epoxy resin system

[0054] The epoxy resin system is composed of epoxy resin and high-temperature curing agent, wherein the epoxy resin is epoxy resin E44, its mass accounts for 85% of the epoxy resin system, and the high-temperature curing agent is methyl tetrahydrophthalic anhydride and 2,4, 6-tris(dimethylaminomethyl)-phenol, methyltetrahydrophthalic anhydride accounts for 12%-14% of epoxy resin system, 2,4,6-tris(dimethylaminomethyl)-phenol accounts for ring 1%-3% of oxygen resin system.

[0055] In this example, 34 g of epoxy resin, 5.6 g of methyltetrahydrophthalic anhydride, and 0.4 g of 2,4,6-tris(dimethylaminome...

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PUM

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Abstract

The invention provides a resin plugging agent based on emulsion deformation and a preparation method and application of the resin plugging agent. The resin plugging agent comprises an epoxy resin system, an emulsifier system and a saline water system, 40% of an epoxy resin system; 10% of an emulsifier system; brine system 50%. The invention also relates to a preparation method and application of the resin plugging agent. The resin profile control system based on emulsion deformation is used for profile control operation of fractured reservoirs. The invention has the following advantages: at room temperature, the system is a stable resin-in-water emulsion, has low viscosity, and has good injectivity; at a high temperature, the system is reversed into a water-in-resin emulsion, and the curedsystem has high overall strength and a good profile control effect.

Description

technical field [0001] The invention relates to the field of oilfield chemistry; in particular, it relates to a resin plugging agent based on emulsion modification, a preparation method and application. Background technique [0002] During the development of fractured reservoirs, injected water tends to creep in along the fractures, resulting in ineffective water injection. Therefore, profile control operations are required. [0003] Resin profile control agent has the advantage of high strength, and it is an excellent profile control agent for channels that require high-strength profile control agent. [0004] However, when the resin is used as a profile control agent, due to its high viscosity and poor injection performance, the application of the resin as a profile control agent is severely limited. In addition, due to the high price of resin, the cost of simply using resin as a profile control agent is high. The above two aspects seriously limit the field application ...

Claims

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Application Information

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IPC IPC(8): C09K8/508
CPCC09K8/5086
Inventor 王洋杨江李冉秦文龙何延龙景成王小香
Owner XI'AN PETROLEUM UNIVERSITY
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