Open AccessApplication research on hydraulic fracturing of cross-layer drilling in Sijiazhuang Coal Mine
Author(s) -
Zhuangzhuang Yao
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/692/4/042012
Subject(s) - hydraulic fracturing , petroleum engineering , coal , permeability (electromagnetism) , coal mining , drilling , geology , extraction (chemistry) , fracturing fluid , geotechnical engineering , mining engineering , engineering , waste management , mechanical engineering , chemistry , chromatography , membrane , biology , genetics
The No.15 coal seam of Sijiazhuang Coal Mine belongs to high gas and low permeability coal seam. Hydraulic fracturing, as a technical measure for outburst prevention, is more and more widely used in high gas outburst mines. The influence of hydraulic fracturing high-pressure water on stress and displacement of roadway is analyzed, and the feasibility of hydraulic fracturing is verified. The industrial test of hydraulic fracturing through layers was carried out and the effect of gas extraction was investigated. The average concentration and pure volume of gas extraction unit in the fracturing area were 3.1 times and 5.7 times of those in the non fracturing area, respectively, which verified the permeability increasing effect of hydraulic fracturing measures. Through fracturing test, the extraction effect has been significantly improved. This paper provides important theoretical support and practical basis for hydraulic fracturing under similar conditions.