Boring or penetrating the earth – Processes – Boring with specific fluid
Reexamination Certificate
2005-07-26
2005-07-26
Bagnell, David (Department: 3672)
Boring or penetrating the earth
Processes
Boring with specific fluid
C166S055200, C166S298000, C175S075000, C175S320000, C175S424000
Reexamination Certificate
active
06920945
ABSTRACT:
A method for facilitating horizontal drilling by positioning in a well casing a shoe defining a passageway extending from an upper opening in the shoe through the shoe to a side opening in the shoe. A rod is connected, through at least one block and pin assembly operative as a universal joint, to a casing mill end, and inserted into the well casing and through the passageway in the shoe until the casing mill end substantially abuts the well casing. The rod and casing mill end are then rotated until the casing mill end substantially forms a perforation in the well casing. The rod and casing mill end are then withdrawn from the well casing, and a nozzle attached to the end of a flexible hose is extended through the passageway to the perforation. Fluid is then ejected from the nozzle and impinges and erodes subterranean formation material.
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Belew Barry
Belew David A.
Bagnell David
Gay Jennifer H
Lateral Technologies International, L.L.C.
Stone, Jr. Jack D.
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