Research Study on the influence of Natural Cracks on Hydraulic Crack Propagation in Coal and Rock Mass

Farzand Ali, Liang Wei Guo
2020 Zenodo  
With the aim of study how natural fractures affect the extension and morphology of hydraulic fracture in coal and rock mass, the effect features were studied about natural fracture on hydraulic fracture extension and morphology using specimens made of similar materials that containing artificial present fracture as the research objects and indoor simulation equipment's, injecting fracturing fluids on fixed displacement and based on analyzing the fracturing curves. The study had shown that: the
more » ... ad shown that: the initiation pressure reduced because of the existence of natural fractures in coal and rock mass,the hydraulic fracture morphology presented three cases: that were the hydraulic fracture spread along natural fracture surface,stopping or continuing to spread after bypassing the natural fracture. This study has some theoretical guidance on the determination of the extraction range and yield prediction of coalbed methane through research.
doi:10.5281/zenodo.3738772 fatcat:zq34ikt4xjd67dbblawbmpzc5i