DOI: 10.11799/ce202412048
Study on fractures distribution pattern in coal seam hydraulic fracturing based on micro-rupture energy scanning
ZHAO Jinbin
ZHANG Junsong
CHENG Zhiheng
ZHAO Yulong
LIU Hongtai
JI Changjiang
Abstract：The effect of fracture propagation and fracturing reconstruction in coal reservoir hydraulic fracturing is related to various factors such as the properties of coal reservoir and construction parameters.The mechanical parameters of 3#coal seam in Zhengzhuang area were obtained by modern testing methods,the geological model was established using Fracpro PT platform,and the hydraulic fracturing numerical simulation of ZH-SB-2 coal-bed gas well was carried out.The fractures of three ZH-SB-1,ZH-SB-2 and ZH-SB-3 coalbed methane wells were monitored by Microseismic fracture scanning.The results indicate that the main crack is not simply a main line,but presents a stepped and"jumping"extension;Part of the high fracture points after fracturing are concentrated near the fracturing point,while the other part is concentrated in the"elliptical"area formed from the wellhead as the origin;When the injection volume of fracturing fluid increases,the high fracture points within the"elliptical"range become denser,while the length of fracturing fractures does not show significant changes;With the change of displacement and liquid volume,the seam height has significantly increased.
Keywords：hydraulic fracturingfracture monitoringnumerical simulationmicro-rupture energy scanning
Publication Date：2024-12-31
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 97-103 )