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A kind of carbon-based proppant and preparation method thereof

A proppant and carbon-based technology, applied in chemical instruments and methods, earthwork drilling, mining fluids, etc., can solve the problems of low strength, high energy consumption of proppant, complicated manufacturing process, etc., and achieve high temperature resistance and long-term diversion performance , Improve the anti-breaking ability, and the effect of easy access to raw materials

Active Publication Date: 2016-01-20
XINJIANG ZHUNDONG GASOLINEEUM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The price of natural proppant is low, but due to the limitations of natural materials, it has high density, low strength, poor chemical inertness, and poor conductivity
Compared with natural proppant, ceramsite proppant has higher strength, better chemical inertness, and better flow conductivity, but has the disadvantages of high density and high requirements for sand-carrying fluid
Coated proppants are particles coated with one or more layers of resin. Compared with uncoated proppants, they have the advantages of high strength, good chemical inertness, good conductivity and low density, but the production process is complicated and the cost is high.
[0004] Chinese Patent Application No. 200710188410.3 discloses the preparation method and preparation process of low-density proppants, which can overcome the large energy consumption in existing proppants, the overall construction cost is also high or the phenomenon of proppant spit out or fracture emptying is not easy to occur, but the strength low deformation

Method used

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  • A kind of carbon-based proppant and preparation method thereof
  • A kind of carbon-based proppant and preparation method thereof
  • A kind of carbon-based proppant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] Step 1: Crushing and sieving the coke powder to obtain aggregates with a particle size of 106-425 μm;

[0071] Step 2: Put the aggregate into the impregnation kettle, heat to 100°C, vacuumize for 2 hours, and the vacuum degree is 8000Pa;

[0072] Step 3: Add asphalt and modifier in proportion to the preparation kettle, stir, heat to 120°C, and stay for 1 hour to make modified asphalt;

[0073] Step 4: Add the modified asphalt to the impregnation tank in proportion, and discharge the modified asphalt after impregnation to obtain the impregnating material;

[0074] Step 5: Cool the impregnation material, add a release agent at the same temperature, the weight ratio of the release agent to the impregnation material is 1:1, perform the isolation process, start stirring, cool after the stirring is completed, discharge the release agent, and obtain raw meal particles;

[0075] Step 6: Put the raw material granules in a curing furnace to dry and solidify in the air under norm...

Embodiment 2

[0078] Step 1: Sieve the coal semi-coke to obtain aggregates with a particle size of 106-425 μm;

[0079] Step 2: Add the aggregate to the impregnation kettle, heat to 116°C, vacuumize for 1.2h, and the vacuum degree is 980Pa;

[0080] Step 3: Add asphalt and modifier in proportion to the preparation kettle, stir, heat to 125°C, and stay for 0.5h to make modified asphalt;

[0081] Step 4: Add the modified asphalt to the impregnation tank in proportion, and discharge the modified asphalt after impregnation to obtain the impregnating material;

[0082] Step 5: Cool the impregnation material, add a release agent at the same temperature, the weight ratio of the release agent to the impregnation material is 2:1, perform the isolation process, start stirring, cool after the stirring is completed, discharge the release agent, and obtain raw meal particles;

[0083] Step 6: Put the raw material granules in a curing furnace to dry and solidify in the air under normal pressure to sligh...

Embodiment 3

[0086] Step 1: Crushing and sieving coke powder and coal semi-coke to obtain aggregates with a particle size of 425-850 μm;

[0087] Step 2: Put the aggregate into the impregnation kettle, heat to 130°C, vacuumize for 1.2h, and the vacuum degree is 2580Pa;

[0088] Step 3: Add asphalt and modifier in proportion to the preparation kettle, stir, heat to 140°C, and stay for 0.6h to make modified asphalt;

[0089] Step 4: Add the modified asphalt to the impregnation tank in proportion, and discharge the modified asphalt after impregnation to obtain the impregnating material;

[0090] Step 5: Cool the impregnation material, add a release agent at the same temperature, the weight ratio of the release agent to the impregnation material is 1.2:1, perform the isolation process, start stirring, cool after the stirring is completed, discharge the release agent, and obtain raw meal particles;

[0091] Step 6: Put the raw material granules in a curing furnace to dry and solidify in the ai...

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Abstract

The invention relates to a carbon-based proppant, specifically a C / C composite material with coke as a reinforcement and asphalt as a matrix precursor; the technical problem to be solved is to provide a low-density , high strength, wear resistance, high temperature resistance, good chemical inertness and good flow conductivity proppant, and provide the preparation method of the proppant at the same time; the technical scheme adopted is coke? 25-45%, modified asphalt 55-75%, the finished product is obtained through impregnation, isolation, curing and firing; the invention is widely used in the field of proppant technology.

Description

technical field [0001] The invention relates to a carbon-based proppant, in particular to a carbon-based proppant of a C / C composite material with coke as a reinforcement and asphalt as a matrix precursor. Background technique [0002] During the extraction of oil, natural gas and coalbed methane, the solid particles used to prop up the fractures of downhole rock formations are called proppants. In 1947, the hydraulic fracturing technology was successfully tested in the United States. The sand of the Arkansas River was used as the first solid particle to prop up rock formation fractures, which laid the foundation for the use of proppants in the exploitation of oil, natural gas and coalbed methane. In the long-term practice of fracturing formations, people have realized that the ideal proppant should have the following characteristics: (1) low density; (2) high strength; (3) good chemical inertness; (4) good conductivity; (5) ) cost-effective. In the 1950s and 1960s, metal ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/80C04B26/26
CPCC04B35/622C04B35/83C09K8/80
Inventor 史万年刘潮林源
Owner XINJIANG ZHUNDONG GASOLINEEUM TECH
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