US 11,988,062 B2
Coiled piston assembly
Richard M. Murphy, Houston, TX (US)
Filed by FMC Technologies, Inc., Houston, TX (US)
Filed on Apr. 22, 2022, as Appl. No. 17/727,467.
Application 17/727,467 is a continuation of application No. 16/606,679, granted, now 11,332,995, previously published as PCT/US2017/036722, filed on Jun. 9, 2017.
Prior Publication US 2022/0243550 A1, Aug. 4, 2022
Int. Cl. E21B 33/04 (2006.01); E21B 33/035 (2006.01); E21B 33/043 (2006.01)
CPC E21B 33/0415 (2013.01) [E21B 33/0355 (2013.01); E21B 33/043 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method for installing a tubing hanger in a wellhead, comprising:
positioning the tubing hanger within a bore of the wellhead, the wellhead having a first tubing hanger lockdown feature within the bore;
engaging a second tubing hanger lockdown feature of the tubing hanger with the first tubing hanger lockdown feature to thereby lock the tubing hanger in position in the wellhead;
with the second tubing hanger lockdown feature engaged with the first tubing hanger lockdown feature, adjusting an axial position of a downward facing load shoulder of the tubing hanger at least until the downward facing load shoulder contacts a seat positioned in the wellhead;
wherein after the axial position of the downward facing load shoulder is adjusted, engagement of the first and second tubing hanger lockdown features prevents the tubing hanger from moving vertically upward relative to the wellhead.