Wells – Processes – With indicating – testing – measuring or locating
Reexamination Certificate
2006-12-07
2009-08-04
Dang, Hoang (Department: 3672)
Wells
Processes
With indicating, testing, measuring or locating
C166S066000, C166S077510, C166S380000, C029S407030
Reexamination Certificate
active
07568522
ABSTRACT:
The present invention generally provides methods and apparatus for connecting threaded members while ensuring that a proper connection is made, particularly for premium grade connections. In one embodiment, a method of connecting threaded tubular members for use in a wellbore or a riser system is provided. The method includes the acts of operating a power drive unit, thereby rotating a first threaded tubular member relative to a second threaded tubular member; measuring the rotation of the first threaded tubular member; and compensating the rotation measurement by subtracting a deflection of at least one of: the power drive unit, and one of the tubular members.
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EP Extended Search Report, Application No. 07250115.8, Dated May 15, 2007.
Boutwell Doyle
Dauphine Aaron
Newman John
Ruark Graham
Dang Hoang
Patterson & Sheridan L.L.P.
Weatherford / Lamb, Inc.
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