EP 0108519 A2 19840516 - Method and apparatus for fracturing rock.
Title (en)
Method and apparatus for fracturing rock.
Title (de)
Verfahren und Vorrichtung zum Brechen des Gesteins.
Title (fr)
Procédé et dispositif pour fracturer la roche.
Publication
Application
Priority
US 43377282 A 19821012
Abstract (en)
A method of fracturing rock includes the steps of drilling a hole into the rock required to be fractured, modifying the shape of the hole, and rapidly pressurizing the modified hole to initiate and propagate cracking to a free surface of the rock. Apparatus for accomplishing the method includes two variations of apparatus for allowing very rapid injection of a pressurized liquid into a hole.
IPC 1-7
IPC 8 full level
E21C 37/06 (2006.01); E21B 43/26 (2006.01); E21C 37/12 (2006.01)
CPC (source: EP)
E21C 37/12 (2013.01)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0108519 A2 19840516; EP 0108519 A3 19851204; AU 1997583 A 19840419; JP S59130999 A 19840727; NO 833683 L 19840413; ZA 837482 B 19850227
DOCDB simple family (application)
EP 83306141 A 19831011; AU 1997583 A 19831007; JP 19060183 A 19831012; NO 833683 A 19831010; ZA 837482 A 19831006