Permeability Improvement Technology of Directional Hydraulic Fracturing in Low Permeability

Xue Xi Chen; Rui Qing Bi; Wen Guang Jin; Yong Xu

doi:10.4028/www.scientific.net/AMM.599-601.385

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 599-601Permeability Improvement Technology of Directional...

Permeability Improvement Technology of Directional Hydraulic Fracturing in Low Permeability

Abstract:

According to the conventional fracturing could easily lead to the local stress concentration of coal, the effect of pressure relief and permeability improvement is not ideal. The mechanism of directional hydraulic fracturing is analyzed and the parameters such as the layout of directional hole, the fracturing hole sealing, the minimum cracking pressure are discussed, then the field application tests are carried out. The results show that the directional hydraulic fracturing effect is better than that of ordinary fracturing hole and the maximum concentration and the average drainage scalar is respectively 3.75 times and 4 times of the ordinary hole pumping gas fracturing effects. The effect of permeability improvement is remarkable.

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Periodical:

Applied Mechanics and Materials (Volumes 599-601)

Pages:

385-390

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.599-601.385

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Online since:

August 2014

Authors:

Xue Xi Chen*, Rui Qing Bi, Wen Guang Jin, Yong Xu

Keywords:

Directional Hydraulic Fracturing, Gas Extraction, Low Permeability Coal Seam, Permeability Improvement Technology

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* - Corresponding Author

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