Taking the hydro out of hydrofracturing: Application of ultra-light weight proppants to cryogenic liquid nitrogen as a fracturing fluid
DOI :
https://doi.org/10.18192/osurj.v1i1.3711Résumé
Au cours de la dernière décennie, la fracturation hydraulique a rapidement gagné en popularité dans le monde entier, devenant la principale méthode d’extraction du gaz naturel aux États-Unis. Cependant, cette pratique reste controversée en raison de sa contribution aux émissions de gaz à effet de serre et à la contamination de l’eau douce utilisée dans les fluides de fracturation. Bien que des fluides de fracturation sans eau aient été mis au point, y compris ceux utilisant du N2, du CO2, de l’huile et de l’alcool, leur application a été limitée en grande partie en raison de la réduction du pouvoir de fracturation. Des études récentes ont démontré que l’azote cryogénique peut s’avérer une alternative viable, si cette question est
correctement traitée. L’ajout d’agents de soutènement durables et légers est un moyen d’augmenter le pouvoir de fracturation. Cette étude a pour but d’étudier l’effet de l’ajout d’un agent de soutènement sur les capacités de fracturation de l’azote cryogénique. Trois agents de soutènement ultra-légers seront combinés avec de l’azote liquide et le pouvoir de fracturation sera mesuré à l’aide de tests de résistance triaxiaux. Cette approche novatrice n’a pas encore été explorée et ouvrira davantage de pistes de recherche sur la fracturation durable et efficace à l’aide d’azote cryogénique.
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