Pipes and tubular conduits – With flow regulators and/or baffles – Flow facilitating
Reexamination Certificate
2004-04-28
2008-12-30
Hook, James F (Department: 3754)
Pipes and tubular conduits
With flow regulators and/or baffles
Flow facilitating
C138S042000
Reexamination Certificate
active
07469720
ABSTRACT:
Methods and apparatus for use within a production pipeline or other flowbore to reduce fluid pressure and regulate fluid flow while minimizing erosion effects caused by particulate matter in the fluid, wherein varying geometries with respect to multiple components within a choke valve are utilized to effectuate multiple changes in fluid flow direction, causing a fluid pressure drop at each directional change.
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Richter, R: “Hochverschleissfeste Stellventile” VGB Kraftwerkstechnik, VGB Kraftwerkstechnik GMBH, Essen, De, vol. 77, No. 6, Jun. 1, 1997, pp. 476-480, XP000656701.
ISSN: 0372-0575, Figure 2 (Translation of relevant portions of reference included).
Brinkley Jimmy
McCulloch Stephen
Bracewell & Giuliani LLP
Hook James F
Wood Group Pressure Control Limited
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