05363927 is referenced by 67 patents and cites 25 patents.

A process and apparatus for high pressure drilling are disclosed. The apparatus comprises an essentially solid drill head with horizontally extendable nozzle arms hingedly connected by shear pins thereto. Flow of high pressure fluid both extends the nozzle arms and flows through the nozzle arms, thereby fracturing and shearing material surrounding the drill head. Cessation of fluid flow returns the arms to the vertical position.

Title
Apparatus and method for hydraulic drilling
Application Number
8/127690
Publication Number
5363927
Application Date
September 27, 1993
Publication Date
November 15, 1994
Inventor
Robert C Frank
4705 Caspian St., Farmington, 87402
NM, US
Agent
Jeffrey D Myers
Deborah A Peacock
Donovan F Duggan
IPC
E21B 10/60
E21B 7/18
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