Subsea wellhead equipment
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 29, 2003
Grant Date -
Jan 30, 2003
app pub date -
Jun 24, 2002
filing date -
Jun 25, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A wellhead apparatus which includes a spool for use in a horizontal tree and having a vertical bore therethrough, and a tubing hanger adapted to be lowered into and landed within the bore of the spool to suspend a tubing string on the lower end of the tubing hanger within the wellbore. The spool has a radial opening therethrough to receive a bellows which forms a fluid passageway removably mounted within the opening by means of a flange on the outer end of the bellows releasably connected to the outer side of the spool. The tubing hanger has an opening therethrough which includes a lateral portion connecting with its outer diameter and a vertical portion leading to a pressure responsive operator for a tubing safety valve. The passageways have seal surfaces on their opposing ends, and the end of the stem is engaged by the seal surface of the bellows to open the poppet as the hanger is lowered. An insert within the lateral portion of the hanger opening has a bore which forms a fluid passageway adapted to be opened and closed by a poppet valve mounted on a stem.
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