Boring or penetrating the earth – Processes – Boring with specific fluid
Reexamination Certificate
2006-02-01
2009-06-02
Bagnell, David J (Department: 3676)
Boring or penetrating the earth
Processes
Boring with specific fluid
C175S424000, C138S125000
Reexamination Certificate
active
07540339
ABSTRACT:
A sleeved hose assembly for lateral jet drilling through an ultra-short radius curve. The sleeved hose assembly includes a wire-wound high-pressure hose inserted inside a reinforcing sleeve. In general, wire-wound high-pressure hoses exhibit transverse moduli that are insufficient to resist buckling forces encountered during lateral drilling. A sleeve is selected to encompass a wire-wound high-pressure hose and to exhibit a transverse stiffness sufficient to prevent the combination of the wire-wound high-pressure hose and the sleeve (i.e., a “sleeved hose assembly”) from buckling during lateral drilling. Also disclosed are a method for drilling a lateral borehole using such a sleeved hose assembly, and a method for drilling an ultra-short radius curve using such a sleeved hose assembly. In a particularly preferred exemplary embodiment, the sleeve includes a fiber reinforced epoxy composite having a transverse modulus of about 10 GPa.
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Parker Hannifin Corporation. “Polyflex Hose Products.” Catalog 4900 USA, Jun. 2003. Page B13 and p. B125.
Anderson Ronald M.
Bagnell David J
Fuller Robert E
Tempress Technologies, Inc.
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