Boring or penetrating the earth – Automatic control – In response to drilling fluid circulation
Reexamination Certificate
2005-01-11
2005-01-11
Bagnell, David (Department: 3672)
Boring or penetrating the earth
Automatic control
In response to drilling fluid circulation
C175S061000, C175S076000, C175S325100, C175S391000, C175S099000, C175S062000, C175S215000, C166S312000, C166S050000, C138S108000
Reexamination Certificate
active
06840337
ABSTRACT:
An apparatus and method for removing cuttings in a deviated borehole using drilling fluids. The apparatus includes a pipe string and a bottom hole assembly having a down hole motor and bit for drilling the borehole. The pipe string has one end attached to the bottom hole assembly and does not rotate during drilling. The apparatus and methods raise at least a portion of the pipe string in the deviated borehole to remove cuttings from underneath the pipe string portion.
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Coats E. Alan
Crook Ron
Estep James
Laursen Patrick
Morgan Rickey L.
Bagnell David
Conley & Rose, P.C.
Halliburton Energy Service,s Inc.
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