Application of natural gas development based on hydraulic fracturing crack propagation law
In order to further explore the precautions for natural gas resource exploitation in the tight sandstone geological environment,taking a natural gas field in a tight sandstone geological environment in a certain area of southwest China as a research case,the ABAQUS numerical simulation analysis software was applied,and combined previous geological exploration data to carry out a detailed modeling a-nalysis.The focus was on exploring the application of horizontal well segmented fracturing technology for mining,the possible impact of two key indicators,hydraulic fracture length and segment spacing,on the mining efficiency.The results show that in the actual mining process,the induced stress difference at the shaft wall should be controlled to avoid being too large or too small.Therefore,it is also necessary to a-void the values of hydraulic fracture length and segment spacing being too low or too high.Relatively speaking,controlling the length of hy-draulic fractures within the range of 100-200 m and the segment spacing within the range of 50-100 m is beneficial for the generation of complex fractures in tight sandstone geological environments,at this time,it is also relatively advantageous for mining work.
hydraulic fracturingcrack propagation lawnatural gas development
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