EP 0108519 A3 19851204 - METHOD AND APPARATUS FOR FRACTURING ROCK
Title (en)
METHOD AND APPARATUS FOR FRACTURING ROCK
Publication
Application
Priority
US 43377282 A 19821012
Abstract (en)
[origin: EP0108519A2] 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)
Citation (search report)
- [X] US 3507540 A 19700421 - SILVERMAN DANIEL
- [Y] US 4047580 A 19770913 - YAHIRO TERUO, et al
- [A] US 4050529 A 19770927 - TAGIROV KURBAN MAGOMEDOVICH, et al
- [A] GB 1033062 A 19660615 - HEDWIG BEUKENBERG, et al
- [A] GB 897879 A 19620530 - HUGH WOOD AND COMPANY LTD
- [XP] US 4394051 A 19830719 - OUDENHOVEN MARTIN S
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