High-strength coated quartz sand, and preparation technology and preparation device thereof

A quartz sand and high-strength technology, which is applied in the fields of mining fluids, wellbore/well components, earthwork drilling, etc., can solve the problems of short shelf life of coated sand products, low strength of quartz sand, high manufacturing cost, etc., and is easy to promote and use, high degree of automation and low maintenance cost
CN109852369AInactive Publication Date: 2019-06-07河南祥盛陶粒有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
河南祥盛陶粒有限公司
Publication Date
2019-06-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a high-strength coated quartz sand, and a preparation technology and a preparation device thereof. The high-strength coated quartz sand comprises, by weight, 70-120 parts of quartz sands, 10-50 parts of mixed resin, 10-15 parts of ultra-short glass fiber powder, 5-10 parts of a curing agent, 1-10 parts of organosilane and 0.5-1 part of a lubricant. The quartz sands are chemically treated during preparation to change the surface roughness, and a coupling agent is added to enhance the interfacial bonding strength between a coating layer and the quartz sands through chemical bonds; a plurality of resins are combined in proportion, and are combined with the alkali-free ultra-short glass fiber powder to further enhance the strength of the resin, so the strength of the coated sand is enhanced; the lubricant can avoid the adhesion between sand bodies in order to keep particles from sticking to each other; and the raw materials are easy to obtain and are cheap, the technology is simple, and the prepared coated sand has good sphericity and high strength, and is easy to promote and use.
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Description

technical field

[0001] The invention belongs to the technical field of film-coated proppants, and in particular relates to a preparation technology for manufacturing high-strength film-coated quartz sand with low-cost materials. Background technique

[0002] In the deep mining of oil and natural gas, during the fracturing construction process, it is necessary to use proppant and high-pressure solution to enter the formation to fill in the rock fractures, so that the rock fractures around the wellbore continue to open, forming a channel with high-level flow capability so that oil and gas products can be smoothly pass. With the development of the domestic economy, oil and gas exploration technology is gradually mature, and the demand for proppant is also increasing. Therefore, the industry of fracturing proppant is also gradually developed, but overall, the export volume is still smaller than the import volume. And the products are mainly concentrated in low-end products with...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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