Seal adaptor alignment means and landing tool and method

Wells – Valves – closures or changeable restrictors

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Details

166 85, 285 18, 285DIG15, E21B 3303, E21B 2300

Patent

active

040893774

ABSTRACT:
An adaptor means for aligning two members to be connected in coaxial, sealed relationship in which the adaptor means includes an adaptor body member having an inner central portion with a throughbore and of preselected length, at least two-part cylindrical or arcuate segments spaced radially outwardly of said inner portion and in concentric relation thereto, said arcuate segments having a length greater than the length of the inner portion; and tubular nipple members carried in passageways in said body member, said tubular members having a length not greater than the length of the inner portion or the segments and lying on a radian between a segment and the inner portion. The arcuate segments each subtend a different angle and are slidably, precisely received in corresponding arcuate recesses provided on a mandrel end of a well tool for precise alignment of the tubular nipple member with a passageway in the well tool. A landing tool and landing technique for locating a tubing hanger in a wellhead assembly in a precise position whereby said seal adaptor means may be properly aligned and mated with said tubing hanger. A landing tool and landing technique in which a tubing hanger is supported above its landed position while being angularly oriented, and when once oriented is lowered into landed position without turning or loss of such angular orientation.

REFERENCES:
patent: 3096135 (1963-07-01), Feustel et al.
patent: 3194588 (1965-07-01), Buckey et al.
patent: 3551005 (1969-04-01), Brun
patent: 3807497 (1974-04-01), Baugh

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