Hydraulic piston-effect method and apparatus for forming a...

Details Hydraulic piston-effect method and apparatus for forming a... Hydraulic piston-effect method and apparatus for forming a...

E - Fixed Constructions

21

B

255/11

E21B 7/18 (2006.01) E21B 7/06 (2006.01) E21B 17/042 (2006.01) E21B 17/07 (2006.01) E21B 36/00 (2006.01) E21B 43/28 (2006.01) E21B 44/00 (2006.01)

Patent

CA 1214768

Abstract of the Disclosure Apparatus for forming a bore hole in an underground formation including a guide pipe with a fluid seal and a tube sealed with the seal and terminating in a drillhead with at least one fluid exit port. The tube moves out the exit end of the guide pipe into the formation under hydraulic pressure applied against the drillhead. Preferably, the bottom of the guide tube includes a whipstock to turn the drillhead, from a vertical to a horizontal direction, to form a radial.

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