Wells – Processes – Assembling well part
Reexamination Certificate
2006-04-25
2006-04-25
Dang, Hoang (Department: 3672)
Wells
Processes
Assembling well part
C166S085400, C166S096100
Reexamination Certificate
active
07032677
ABSTRACT:
A lockdown flange for use with an independent screwed wellhead includes an annular body having a center passageway with an internal diameter at least as large as a passageway through the wellhead. The lock down flange may be used to construct a multi-lock adapter for connecting a high pressure valve, a blowout preventer or a well stimulation tool to the independent screwed wellhead. The lockdown flange ensures that stress on connection points to the screwed independent wellhead due to elevated fluid pressures used for well stimulation procedures does not exceed engineered specifications.
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Dallas L. Murray
McGuire Bob
Dang Hoang
H W CES International
Nelson Mullins Riley & Scarborough LLP
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