Ultra-light ceramsite proppant for clear water fracturing or water-free fracturing, and preparation method thereof

A technology of ultra-light pottery and proppant, which is applied in the direction of chemical instruments and methods, earthwork drilling, and drilling compositions, etc. It can solve the problems of high proppant density, reduce production costs and achieve comprehensive utilization

Inactive Publication Date: 2017-09-12
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an ultra-light ceramsite proppant for clear water fracturing or waterless fracturing and its preparation method to solve the technical problem of high density of existing proppant

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] First, 250g of low-grade bauxite, 45g of micro-silicon, and 5g of manganese oxide were mixed evenly, granulated, hot plasma shaped, sintered in a tunnel kiln at a high temperature of 1200 degrees for 2 hours, and sieved to obtain an ultra-light ceramsite proppant. The apparent density of ultra-light ceramsite proppant is 1.38g / cm 3 , The bearing strength is 69MPa.

Embodiment 2

[0022] First, 250g of low-grade bauxite, 45g of feldspar, and 5g of manganese carbonate are mixed evenly, granulated, hot plasma shaped, sintered at a high temperature of 1500 degrees in a tunnel kiln for 2 hours, and sieved to obtain an ultra-light ceramsite proppant. The apparent density of ultra-light ceramsite proppant is 1.66g / cm 3 , The bearing strength is 69MPa.

Embodiment 3

[0024] First, mix 250g of low-grade bauxite, 45g of diatomite, and 5g of manganese hydroxide evenly, granulate, heat plasma to shape, sinter at 1300°C for 2 hours in a tunnel kiln, and sieve to obtain ultra-light ceramsite proppant. The apparent density of ultra-light ceramsite proppant is 1.54g / cm 3 , The bearing strength is 69MPa.

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Abstract

The invention discloses an ultra-light ceramsite proppant for clear water fracturing or water-free fracturing, and a preparation method thereof, and belongs to the technical field of shale gas fracturing. According to the present invention, the preparation method of present invention is different from the existing proppant preparation method; the technical route comprises material preparation, granulation, high temperature molding, and late-stage high temperature sintering; the product visual density is 1.0-1.7 g/cm<3>, and the bearing strength is more than 52 MPa; the main phase components comprise a corundum phase, a mullite phase and a glass phase; the product is suitable for clear water fracturing or water-free fracturing of shale gas, can effectively reduce the fracturing operating cost, can completely use the oil-gas production capacity, and can substantially improve the whole fracturing effect; and the used main raw material is the low-grade bauxite, such that the production cost can be effectively reduced, and the comprehensive utilization of low-grade bauxite can be achieved.

Description

technical field [0001] The invention belongs to the technical field of shale gas fracturing proppant, and relates to an ultra-light ceramsite proppant applied to clear water fracturing or waterless fracturing and a preparation method thereof. Background technique [0002] At this stage, the true density of proppants used in shale gas development is generally higher than 2.40g / cm 3 However, the linear glue with good sand-carrying performance and the effective carrying of slick water are required to enter the fractures in the formation far from the wellbore, which is still difficult to meet the technical requirements of shale gas fracturing with clean water and waterless fracturing. At present, in shale gas fracturing construction, the high density of the above-mentioned proppant makes it have higher requirements for fracturing machinery and supporting equipment, and stronger requirements for sand-carrying ability and fracture-making ability of fracturing fluid. Larger volume...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/80E21B43/267
CPCC09K8/805E21B43/267
Inventor 袁方利范俊梅赵佩辰孙志强
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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