Preparation and Mechanisms of Proppant for Coal Bed Fracturing

DU Jie; TANG Yibo; WANG Junfeng; XUE Sheng

Safety in Coal Mines > 2018 > 49(10): 5-8,12.

DU Jie, TANG Yibo, WANG Junfeng, XUE Sheng. Preparation and Mechanisms of Proppant for Coal Bed Fracturing[J]. Safety in Coal Mines, 2018, 49(10): 5-8,12.

Citation:

DU Jie, TANG Yibo, WANG Junfeng, XUE Sheng. Preparation and Mechanisms of Proppant for Coal Bed Fracturing[J]. Safety in Coal Mines, 2018, 49(10): 5-8,12.

Citation:

DU Jie, TANG Yibo, WANG Junfeng, XUE Sheng. Preparation and Mechanisms of Proppant for Coal Bed Fracturing[J]. Safety in Coal Mines, 2018, 49(10): 5-8,12.

Preparation and Mechanisms of Proppant for Coal Bed Fracturing

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Published Date: October 19, 2018

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Abstract

According to high temperature sintering technology under normal pressure, ceramsite proppant for coal bed fracturing was successfully fabricated by using the secondary bauxite and industrial waste fly ash, coal gangue as raw material at sintering temperature of 1 250 ℃ to 1 450 ℃, and then it was precured with resin coating. The effects of different raw material ratios and resin coating on the performance ceramsite proppant were investigated. The XRD, SEM and broken rate were used to study the phase composition and the microstructure of the ceramsite proppant sintered at various temperature. When the bauxite addition is 40%, fly ash is 20% and coal gangue is 40% and the sintering temperature is 1 350 ℃, the results show that the bulk density of the prepared ceramsite proppant is 1.37 g/cm³, the apparent density is 2.63 g/cm³, and the crushing ratio under the pressure of 35 MPa is 6.98%, after coating with resin, the strength is further enhanced, and the breakage rate is as low as 2.23%.
- coal bed fracturing,
- ceramic proppant,
- industrial waste,
- sintering temperature,
- resin coating,
- coalbed methane development

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