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Curable proppant as well as preparation method and application thereof

A proppant and curing agent technology, applied in chemical instruments and methods, earthwork drilling, wellbore/well components, etc., can solve the problem of no consolidation strength of phenolic resin coated sand, proppant regurgitation injection well injection capacity, The proppant is not resistant to alkali and other problems, and achieves the effect of excellent storage stability, easy acquisition and strong alkali resistance

Active Publication Date: 2019-08-02
BEIJING QISINTAL NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the technical problems existing in the prior art, for example, the existing proppant is not alkali-resistant, and it is easy to cause problems such as no consolidation strength of the phenolic resin coated sand, regurgitation of the proppant, and decline in the injection capacity of the injection well. The present invention first Provides a curable proppant

Method used

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  • Curable proppant as well as preparation method and application thereof
  • Curable proppant as well as preparation method and application thereof
  • Curable proppant as well as preparation method and application thereof

Examples

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no. 1 approach

[0030] A first embodiment of the present invention provides a curable proppant. The curable proppant includes pre-cured membrane proppant, liquid epoxy resin A, latent curing agent, filler and flow modifier; wherein,

[0031] Based on the total weight of the pre-cured membrane proppant, the addition of the liquid epoxy resin A is 2%-6%; the addition of the latent curing agent is 0.2%-1.8%; The added amount of the filler is 10%-30%; the added amount of the flow modifier is 0.1%-1%.

[0032] The curable proppant of the present invention not only can be solidified in strong alkali liquid, has high consolidation strength, but also has good fluidity of particles and stable storage.

[0033]

[0034] The pre-cured film-coated proppant of the present invention is preferably a particle in which the aggregate is pre-cured and film-coated by using epoxy resin B, a coupling agent and a pre-curing agent. in particular:

[0035] aggregate

[0036] The aggregate in the pre-cured mem...

no. 2 approach

[0063] A second embodiment of the present invention provides a method for preparing a curable proppant according to the first embodiment of the present invention, which includes a step of mixing components of the curable proppant.

[0064] Specifically, the preparation method of the curable proppant comprises the following steps:

[0065] Step 1, taking the pre-cured coating proppant, liquid epoxy resin A and latent curing agent and mixing and curing to obtain a cured product;

[0066] Step 2, adding fillers and flow modifiers to the cured product and then dispersing to obtain a curable proppant.

[0067] Further, the preparation method of the curable proppant comprises the following steps:

[0068] Step 1. Mix the pre-cured film proppant, liquid epoxy resin A and latent curing agent at a temperature below 50°C, and stir for 30±10 seconds to cure to obtain a cured product;

[0069] Step 2, adding a filler and a flow modifier to the cured product and then dispersing to obtain...

no. 3 approach

[0074] The third embodiment of the present invention provides an application of the curable proppant according to the first embodiment or the curable proppant prepared according to the preparation method of the second embodiment in ASP flooding.

[0075] The curable proppant of the present invention can be solidified in a strong alkali liquid, has high consolidation strength, good fluidity of particles, stable storage, etc., and is suitable for ASP flooding.

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Abstract

The invention provides a curable proppant as well as a preparation method and an application thereof. The curable proppant comprises a precured film coating proppant, liquid epoxy resin A, a latent curing agent, filler and a flow modifier, wherein in terms of total weight of the precured film coating proppant, the adding amount of the liquid epoxy resin A is 2%-6%, the adding amount of the latentcuring agent is 0.2%-1.8%, the adding amount of the filler is 10%-30%, and the adding amount of the flow modifier is 0.1%-1%. The curable proppant is high in storage stability and alkali resistance, and can be solidified in a strong alkaline solution, for example, the curable proppant can be solidified in a sodium hydroxide solution with mass concentration of 1.5% at the temperature of 40 DEG C orabove, and the solidification strength is higher than 5 MPa.

Description

technical field [0001] The invention relates to a curable proppant and its preparation method and application, in particular to a curable proppant for ASP flooding, which belongs to the technical field of tertiary oil recovery. Background technique [0002] Petroleum is a kind of mineral fluid stored in the ground, and it is an indispensable energy source for the development of industrialization. At present, most of my country's main oilfields have entered the period of high water-cut exploitation, the difficulty of oil exploitation is becoming more and more difficult, the rate of decline in production is gradually increasing, and the contradiction between supply and demand is becoming increasingly prominent. In order to alleviate the increasingly prominent contradiction between supply and demand, people use various methods to improve the recovery rate of existing oil fields. In recent years, it has been found that the ASP flooding technology containing alkali, surfactant a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/80C08G59/50C08G59/68
CPCC09K8/805C08G59/5033C08G59/686
Inventor 张伟民蒙传幼陈丽杨雪芹马永宇
Owner BEIJING QISINTAL NEW MATERIAL