Wells – Processes – Assembling well part
Reexamination Certificate
2011-01-25
2011-01-25
Neuder, William P (Department: 3672)
Wells
Processes
Assembling well part
C166S084100, C166S068500, C277S329000
Reexamination Certificate
active
07874369
ABSTRACT:
The present invention relates to a split seal for a progressive cavity pump (PCP) drive head stuffing box. In one embodiment, a mechanical seal assembly for a pump is provided. The mechanical seal assembly includes a seal housing; first and second semi-annular mechanical seals, each at least partially disposed in the seal housing bore, and a seal sleeve rotatable relative to the seal housing; third and fourth semi-annular mechanical seals, each disposed at least partially in the seal sleeve bore, at least one of the third and fourth seals rotationally coupled to the seal sleeve; and one or more biasing members biasing the mechanical seals into engagement.
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Lane William C.
Parker Charles D.
Andrews David
Neuder William P
Patterson & Sheridan LLP
Weatherford / Lamb, Inc.
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