Wells – Processes – Assembling well part
Reexamination Certificate
2011-03-22
2011-03-22
Thompson, Kenneth (Department: 3672)
Wells
Processes
Assembling well part
C166S085100
Reexamination Certificate
active
07909105
ABSTRACT:
An assembly for connecting a drilling adapter to a wellhead comprising external threads on an end portion thereof.
REFERENCES:
patent: 3759453 (1973-09-01), Johnson
patent: 4690220 (1987-09-01), Braddick
patent: 6092596 (2000-07-01), Van Bilderbeek
patent: 2005/0092496 (2005-05-01), Duhn et al.
“Specification for Independent Wellhead Equipment”, APSI Specification 11IW, First Edition, Jun. 2000, pp. 1-4, 15-17.
“Quick Lock Drilling Flange”, www.wellheadinc., pp. 1-3, Jun. 29, 2007.
Borak, Jr. Eugene A.
Dach, Jr. Anton J.
Huynh Vanson
Bracewell & Giuliani
Thompson Kenneth
Vetcogray Inc.
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