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Plugging light sand and preparation method thereof

A technology of light sand and silica sand, which is applied in the field of plugging, can solve the problems of not being able to gel quickly and the swelling ratio is small, and achieve the effects of saving resources, increasing the swelling ratio, and shortening the curing time

Pending Publication Date: 2021-03-02
DONGYING HUIYOU GASOLINEEUM NEW TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a plugging light sand and its preparation method to solve the problem that the light sand obtained in the prior art has a small swelling ratio and cannot gel quickly when used in the plugging field

Method used

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  • Plugging light sand and preparation method thereof
  • Plugging light sand and preparation method thereof
  • Plugging light sand and preparation method thereof

Examples

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preparation example Construction

[0028] The preparation method of the described plugging lightweight sand comprises the following steps:

[0029] (1) Construction waste is obtained by crushing waste construction aerated concrete to particles with a particle size of ≤6 mm;

[0030] (2) Cement, silica sand, diatomaceous earth, sodium fluoride, polystyrene butadiene copolymer, potassium bicarbonate, lauroyl peroxide, trimethylolpropane tris (3- aziridinyl propionic acid ester) after stirring for 5-8min at a rotating speed of 100-200r / min, the shell powder material is made;

[0031] (3) Pre-absorbing the construction waste prepared in step (1) until the water content is 14%-18%, put it into a ball forming pan, roll continuously in the ball forming pan, and spray 7-11 parts by weight of acrylic acid emulsion to make After the particle surface is wetted, evenly sprinkle the shell powder material prepared in step (2) into the ball forming area to form spherical particles;

[0032] (4) After the spherical particles...

Embodiment 1

[0035] A plugging lightweight sand: the inner core is construction waste, and the construction waste is obtained by crushing construction waste aerated concrete, and the inner core is wrapped with a 0.05mm thick shell material, and the shell material is The unit is parts by weight, including the following raw materials: 12 parts of cement, 7 parts of silica sand, 1 part of diatomaceous earth, 4 parts of sodium fluoride, 3 parts of polystyrene butadiene copolymer, 7 parts of potassium bicarbonate, laurel peroxide Acyl 0.2 part, trimethylolpropane tris (3- aziridinyl propionate) 0.3 part; The described silicon-containing sand is river sand, and the particle size of the silicon-containing sand is 7-28 μm;

[0036] The preparation method of the described plugging lightweight sand comprises the following steps:

[0037] (1) Construction waste is obtained by crushing construction waste aerated concrete to particles with a particle size of ≤5.3mm;

[0038] (2) Cement, silica sand, d...

Embodiment 2

[0042] A plugging lightweight sand: the inner core is construction waste, and the construction waste is obtained by crushing construction waste aerated concrete, and the inner core is wrapped with a 0.08mm thick shell material, and the shell material is The unit is parts by weight, including the following raw materials: 16 parts of cement, 10 parts of silica-containing sand, 2 parts of diatomaceous earth, 5 parts of sodium fluoride, 4 parts of polystyrene butadiene copolymer, 8 parts of potassium bicarbonate, laurel peroxide Acyl 0.3 part, trimethylolpropane tris (3- aziridinyl propionate) 0.4 part; The described silicon-containing sand is Jiangsha, and the particle size of the silicon-containing sand is 4-32 μm;

[0043] The preparation method of the described plugging lightweight sand comprises the following steps:

[0044] (1) Construction waste is obtained by crushing waste construction aerated concrete to particles with a particle size ≤ 5.8mm;

[0045] (2) Cement, silic...

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Abstract

The invention discloses a plugging light sand. An inner core is made of construction waste, a layer of shell material wraps the outer portion of the inner core, and the shell material comprises the following raw materials in parts by weight: 10-20 parts of cement, 6-13 parts of silicon-containing sand, 1-3 parts of diatomite, 4-6 parts of sodium fluoride, 2-5 parts of polystyrene-butadiene copolymer, 7-10 parts of potassium bicarbonate, 0.2-0.4 part of lauroyl peroxide and 0.3-0.5 part of trimethylolpropane tris(3-aziridinylpropanoate). The plugging light sand is prepared by preparing construction waste, preparing an outer shell powder material, preparing spherical particles, and carrying out autoclaved curing and the like. The plugging light sand is extremely high in swelling ratio, rapidgelatinization can be achieved, and the plugging effect is improved.

Description

technical field [0001] The invention belongs to the technical field of plugging, and in particular relates to a plugging light sand and a preparation method thereof. Background technique [0002] With the rapid development of society, traffic engineering is developing rapidly, the pace of infrastructure construction continues to accelerate, and projects such as railways, tunnels, highways, and mines are increasing. Especially with the vigorous implementation of the 21st Century Maritime Silk Road, the eastern coastal areas of my country have put forward a huge demand for intercity and interprovincial transportation construction. As of the end of 2018, the number of road and railway tunnels built in my country exceeded 30,000, with a total mileage of over 35,000 km. In addition, there are 5,289km of tunnels under construction in my country, and more than 28,000km of tunnels are planned. However, my country's terrain is complex and changeable, and construction often passes t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B20/10
CPCC04B20/1077C04B18/16C04B20/1066C04B20/1055C04B20/1033C04B20/1022
Inventor 张宁曾才敏张晔桐
Owner DONGYING HUIYOU GASOLINEEUM NEW TECH DEV
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