Wells – Above ground apparatus – Inner member anchor or seal with lateral port
Patent
1995-01-17
1996-11-26
Dang, Hoang C.
Wells
Above ground apparatus
Inner member anchor or seal with lateral port
166 7514, 166 841, 166 951, E21B 3304
Patent
active
055775560
ABSTRACT:
A simple one piece device, herein referred to as an unitary diversionary-tubing hanger, or UDTH, for attachment to a wellhead that functions as a tubing hanger, a diverter of flow from the vertical to the horizontal or visa versa, and a securing device for a removable vertical seal plug and a recoverable emergency energizable vertical rod seal. The UDTH simplifies wellhead completion by eliminating all valves in the vertical string. The UDTH can be landed directly in some wellheads. The UDTH also simplifies remedial treatment of the wellhead and can be installed or removed from most wellheads in less than one hour. The UDTH can also pass through a blowout protector attached to a wellhead. A recoverable energizable vertical rod seal, installable in the vertical passageway of the UDTH, provides an emergency pump rod seal in a wellhead completed for rod pumping, both reciprocating and rotating. The pump rod seal has a member which seal it against the vertical passageway in the UDTH, a resilient member which can be energized to seal around the pump rod when leakage occurs, while allowing the pumping to continue.
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Dang Hoang C.
Logan F. Eugene
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