Wells – Processes – Assembling well part
Reexamination Certificate
2011-03-29
2011-03-29
Thompson, Kenneth (Department: 3672)
Wells
Processes
Assembling well part
C166S242600, C166S344000, C166S345000, C166S359000, C285S082000, C285S922000
Reexamination Certificate
active
07913767
ABSTRACT:
A technique for securing drilling riser joints in a drilling riser string is presented. The drilling riser joints have a tubular housing that has a box configuration on one end and a pin configuration on the other end. The drilling riser string is assembled by connecting the pin end of one drilling riser joint to the box end of an adjoining drilling riser joint. A moveable ring is used to connect adjoining drilling riser joints. The moveable ring is used to drive a fastener of one drilling riser joint against the adjoining drilling riser joint. The moveable ring is driven axially from a position where the fastener is not engaged against the adjoining drilling riser joint to a position where the fastener is engaged against the adjoining drilling riser joint. A latch is used to prevent the moveable ring from moving inadvertently from the second position.
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Larson Eric D.
Stringfellow Rick L.
Trenholme Richard T.
Loikith Catherine
Thompson Kenneth
Vetco Gray Inc.
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