TUBING HEAD SPOOL ACTUATION THROUGH LANDING STRING
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United States of America Patent
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Issued Date -
Jan 22, 2015
app pub date -
Jul 22, 2013
filing date -
Jul 22, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A landing string for landing a tubing hanger in a tubing spool has flow lines for actuating annulus access valves. A tubing string depends from the tubing hanger, and projects into a wellbore lined with casing when the tubing hanger is landed. Piping outside of the tubing spool connects to a bore formed through the tubing spool to provide access to an annulus between the tubing string and casing. The annulus access valve is in the flow line to control flow to the annulus. The valve is driven by an actuator that is operated by fluid in a flow line ported through the landing string, and in communication with the tubing spool when the tubing hanger is landed.
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