Preparation method of plugging agent

A leak-stopping agent and a technology for preparation steps, which are applied in the field of preparation of leak-stopping agents, can solve problems such as the inability to further improve the plugging effect of the leak-stopping agent, poor compressive strength, etc., and achieve enhanced connection force, improved leak-stopping performance, The effect of improving the compressive strength

Pending Publication Date: 2018-11-27
宣伟(南通)涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main technical problem to be solved by the present invention is: Aiming at the problems that the traditional leak-stopping agent can’

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example 1

[0021] Mix gum arabic powder and water at a mass ratio of 1:22, and add sludge with 3.0 times the mass of gum arabic powder and emulsifier with 0.5 times the mass of gum arabic to the mixture of gum arabic powder and water, at a temperature of 55°C After stirring and mixing for 80 minutes at a speed of 600r / min, a gum arabic emulsion was obtained; the gelatin and water were mixed in a beaker at a mass ratio of 4:20, and glycerin 2 times the mass of the gelatin was added to the beaker. After stirring and mixing for 60 minutes under the condition of 50°C and rotating speed of 500r / min, the gelatin solution was obtained. The gelatin solution and the gum arabic emulsion were mixed in a flask at a mass ratio of 2:1, and 0.2 times the mass of the gelatin solution was added to the flask. The organic bentonite was stirred and mixed for 40 minutes at a temperature of 50°C and a rotational speed of 400r / min, and then calcined with 20% acetic acid to adjust the pH of the ...

Example Embodiment

[0022] Example 2

[0023] Mix gum arabic powder and water at a mass ratio of 1:22, and add sludge with 3.0 times the mass of gum arabic powder and emulsifier with 0.5 times the mass of gum arabic to the mixture of gum arabic powder and water, at a temperature of 55°C , After stirring and mixing for 80 minutes at a speed of 600r / min, a gum arabic emulsion was obtained; the sodium silicate solution with a mass fraction of 12% and a polyvinyl alcohol solution with a mass fraction of 12% were mixed with three mouths at a mass ratio of 1:4 Add a 12% sodium silicate solution with a mass fraction of an emulsifier 0.2 times the mass to a three-necked flask. After stirring and mixing for 50 minutes at a temperature of 65°C and a rotational speed of 800r / min, the sodium silicate polymer is obtained. Vinyl alcohol mixture, sodium silicate polyvinyl alcohol mixture and initiator are mixed in a four-necked flask at a mass ratio of 15:1, and a polyvinyl alcohol mixed solution of 0.8 times the ...

Example Embodiment

[0024] Example 3

[0025] Mix gum arabic powder and water at a mass ratio of 1:22, and add sludge with 3.0 times the mass of gum arabic powder and emulsifier with 0.5 times the mass of gum arabic to the mixture of gum arabic powder and water, at a temperature of 55°C After stirring and mixing for 80 minutes at a speed of 600r / min, a gum arabic emulsion was obtained; the gelatin and water were mixed in a beaker at a mass ratio of 4:20, and glycerin 2 times the mass of the gelatin was added to the beaker. After stirring and mixing for 60 minutes under the condition of 50°C and rotating speed of 500r / min, the gelatin solution was obtained. The gelatin solution and the gum arabic emulsion were mixed in a flask at a mass ratio of 2:1, and 0.2 times the mass of the gelatin solution was added to the flask. The organic bentonite was stirred and mixed for 40 minutes at a temperature of 50°C and a rotational speed of 400r / min, and then calcined with 20% acetic acid to adjust the pH of the ...

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Abstract

The invention discloses a preparation method of a plugging agent and belongs to the technical field of high molecular materials. The preparation method comprises the following steps: mixing a modifiedpolyvinyl alcohol mixture and borax according to the mass ratio ranging from (100 to 1) to (100 to 2); adding a mixed treatment agent which is 0.05 to 0.06 time of the modified polyvinyl alcohol mixture in mass, and a plasticizer which is 0.01 to 0.03 time of the modified polyvinyl alcohol mixture in mass; after stirring and mixing, obtaining a plugging agent blank; drying the plugging agent blank until the weight is constant; crushing to obtain a pre-treated plugging agent blank; mixing the pre-treated plugging agent blank and water-absorption resin according to the mass ratio ranging from (30 to 1) to (40 to 1); adding an additive which is 0.3 to 0.5 time of the pre-treated plugging agent blank in mass; and stirring and mixing to obtain the plugging agent. The plugging agent disclosed by the invention has excellent plugging effect and compression strength.

Description

technical field [0001] The invention discloses a preparation method of a plugging agent, which belongs to the technical field of polymer materials. Background technique [0002] Large cracks, karst caves, sand egg layers and formations containing dynamic water are often encountered in geological drilling. Quick-setting cement slurry or mortar plugging and bridge plugging are often used for plugging of drilling losses in these formations, but cement or mortar The slurry is easy to separate, and the slurry is often rejected due to the blockage of the slurry inlet channel, or the slurry part of the slurry diffuses too far, resulting in waste, and sometimes the treated pores are not fully filled. In addition, quick-setting cement slurry or mortar cannot be accumulated in high-speed dynamic water in formations containing dynamic water, and the water-separating property is very large, and the stability is not good so that plugging cannot be performed. During the process of bridge...

Claims

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Application Information

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IPC IPC(8): C09K8/467
CPCC09K8/426C09K8/467
Inventor 胡莉刘侠朱东东
Owner 宣伟(南通)涂料有限公司
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