Wells – Conduit wall or specific conduit end structure – Downhole coupling or connector
Reexamination Certificate
2007-09-27
2010-11-02
Stephenson, Daniel P (Department: 3676)
Wells
Conduit wall or specific conduit end structure
Downhole coupling or connector
C439S191000
Reexamination Certificate
active
07823639
ABSTRACT:
A structure for wired drill pipe includes a pipe joint having a pin end and a box end. The pin end and box end each have threads for engagement with corresponding threads on a respective box and pin of an adjacent pipe joint. A longitudinal end of the threads on the pin and on the box include at least in an internal shoulder for engagement with a corresponding internal shoulder on an adjacent box or pin. The internal shoulder of each of the pin and the box includes a groove around a circumference thereof for retaining a communication device therein. An external flank of the groove on the pin, and a corresponding surface of the box include deflection resistance feature.
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International Search Report and Written Opinion Dated Apr. 2, 2009 for Appl. No. PCT/US2008/075720; (12 p.).
Conley & Rose, P.C.
IntelliServ LLC
Stephenson Daniel P
LandOfFree
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