Method for fracturing rock multi-directionally and device for fracturing rock multi-directionally

Abstract

A method for fracturing a rock multi-directionally includes: a borehole formation step of forming a borehole in a rock; a first fluid introduction step of introducing a first fluid to the borehole; a second fluid introduction pressurization fracturing step of introducing and pressurizing a second fluid to the borehole to generate a fractured portion around the borehole, and allowing the first fluid to close the fractured portion; and a pressurization fracturing step of continuously introducing and pressurizing the second fluid to the borehole even after the fractured portion is generated, and generating a fractured portion in a direction different from the fractured portion of the rock.

1 . A method for fracturing a rock multi-directionally, the method comprising:
 a borehole formation step of forming a borehole in a rock;   a first fluid introduction step of introducing a first fluid to the borehole;   a second fluid introduction pressurization fracturing step of introducing and pressurizing a second fluid to the borehole to generate a fractured portion around the borehole, and allowing the first fluid to close the fractured portion; and   a pressurization fracturing step of continuously introducing and pressurizing the second fluid to the borehole even after the fractured portion is generated, and generating a fractured portion in a direction different from the fractured portion of the rock.   
     
     
         2 . The method for fracturing a rock multi-directionally according to  claim 1 , wherein
 the first fluid is a functional fluid.   
     
     
         3 . The method for fracturing a rock multi-directionally according to  claim 1 , wherein
 the pressurization fracturing step is repeated a plurality of times.   
     
     
         4 . A device for fracturing a rock multi-directionally, the device comprising:
 a drilling unit configured to drill a borehole in the rock;   a fluid introduction pressurization unit configured to introduce and pressurize a first fluid and a second fluid into the borehole; and   a control unit for the fluid introduction pressurization unit configured to continuously operate the fluid introduction pressurization unit even after a fractured portion is generated around the borehole of the rock by the fluid introduction pressurization unit and perform control to repeat fracturing around the borehole of the rock.   
     
     
         5 . The device for fracturing a rock multi-directionally according to  claim 4 , wherein
 the first fluid is a functional fluid.