Pipes and tubular conduits – With pressure compensators – Variable capacity chambers
Reexamination Certificate
2005-04-05
2005-04-05
Hook, James (Department: 3754)
Pipes and tubular conduits
With pressure compensators
Variable capacity chambers
C175S135000
Reexamination Certificate
active
06874540
ABSTRACT:
A pulsation dampener apparatus and method for dampening pulses within a fluid flow line during well drilling operations. The pulsation dampener apparatus comprises a cylindrical body having an annular chamber, a piston slidably disposed within the annular chamber, a gas column within the annular chamber and a means of communicating pulses from the fluid flow line to the piston. The piston is operated against the gas column to dampen the pulses within the fluid flow line.
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Hook James
Smith International Inc.
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