Wells – Processes – Assembling well part
Reexamination Certificate
2005-08-24
2008-12-16
Gay, Jennifer H (Department: 3676)
Wells
Processes
Assembling well part
C166S085400, C251S001300
Reexamination Certificate
active
07464765
ABSTRACT:
An improved ram inner seal assembly used in ram-type BOPs is disclosed. The disclosed invention provides an inner guide seal assembly that comprises a specially shaped guide body and a separate sealing element. When the ram-type BOP is closed, two opposing rams move toward one another, and the inner guide seal assembly guides a wireline (or other tubular) toward the center of the vertical bore through the BOP. The inner guide seal assembly's proximity to the ram body's centerline axis helps ensure that a positive seal is formed and that no damage occurs to the device in the central bore of the BOP. The separate, specially-shaped sealing element can be easily inserted into and removed from the guide body of the inner guide seal assembly for easy replacement.
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Cordova Noe Tony
Ghansyam Haresh
Gilleylen Russell C.
Hiebeler Harry P.
Isaacks C. Steven
Fuller Robert E
Gay Jennifer H
Howrey LLP
National-Oilwell DHT, L.P.
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