E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/64
E21B 33/12 (2006.01) E21B 33/068 (2006.01) E21B 33/128 (2006.01)
Patent
CA 1292676
ABSTRACT OF THE DISCLOSURE An expanding nipple, externally mounted packer has a body which mounts onto a stack of blowout preventers or a casing head and tubing spool or the like. The body contains an external locking mechanism and the upper ends of a pair of concentric mandrels which are lowered into the well casing, through the blowout preventer stack or other configuration of well head equipment. The outer mandrel has a deformable seal on its lower end and the inner mandrel has an expander on its lower end. Piston means on the inner mandrel responsive to hydraulic pressure, raises the inner mandrel with respect to the outer mandrel so that the expander forces the seal outwards against the casing wall. The locking mechanism allows the seal to be locked in place. The hydraulic pressure on the piston is reversed to unseal the nipple.
581963
Gowling Lafleur Henderson Llp
Mcleod Roderick D.
LandOfFree
Well casing packers does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Well casing packers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Well casing packers will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1178828