US 12,006,792 B2
Snub friendly wellhead hanger
Brandon Blake Shirley, Cypress, TX (US); and Juan Carlos Gonzalez, Houston, TX (US)
Assigned to Cameron International Corporation, Houston, TX (US)
Filed by Cameron International Corporation, Houston, TX (US)
Filed on Jun. 2, 2023, as Appl. No. 18/328,002.
Application 18/328,002 is a continuation of application No. 17/390,387, filed on Jul. 30, 2021, granted, now 11,719,073.
Claims priority of provisional application 62/706,086, filed on Jul. 31, 2020.
Prior Publication US 2023/0304381 A1, Sep. 28, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. E21B 23/02 (2006.01); E21B 21/08 (2006.01); E21B 34/14 (2006.01)
CPC E21B 34/14 (2013.01) [E21B 21/08 (2013.01); E21B 23/02 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A snubbing method comprising:
snubbing a tubing hanger into a wellhead housing from a snubbing unit, wherein snubbing the tubing hanger into the wellhead housing includes:
lowering the tubing hanger into a bore of the wellhead housing under pressure with an obstruction installed in a bore of the tubing hanger to block fluid communication through the bore of the tubing hanger;
allowing fluid in the bore of the wellhead housing to pass along an exterior of the tubing hanger due to an annular gap between the exterior of the tubing hanger and an interior surface of the wellhead housing to balance fluid pressure above and below the tubing hanger as the tubing hanger is lowered into the bore of the wellhead housing; and
positioning the tubing hanger at a location in the bore of the wellhead housing; and
elastically deforming the wellhead housing to grip and secure the tubing hanger at the location in the bore of the wellhead housing.