Wells – Processes – Placing or shifting well part
Patent
1980-10-31
1982-10-12
Novosad, Stephen J.
Wells
Processes
Placing or shifting well part
166113, 166123, 166182, 166208, 166387, 285142, E21B 2302, E21B 2306, E21B 3303
Patent
active
043534201
ABSTRACT:
A well apparatus and method of running same, which apparatus includes a hanger body with a downwardly facing external shoulder adapted to land on a wellhead housing landing seat and having an external flow passage therearound for flow of fluids past the landing shoulder and around the exterior of the hanger body; a packer assembly adapted to seal against the interior of the wellhead housing and against a seal surface on the hanger body with an actuating sleeve surrounding a mandrel, which sleeve is adapted to move to set the packing ring and includes means holding the sleeve against inadvertent setting and means holding the packer assembly in set position, together with a running tool which is releasably engaged to the hanger body and to the packer assembly so that on seating of the hanger body, the running tool may be released from the hanger body to move the packer assembly into sealing engagement with the hanger body and with the interior of the wellhead housing. The method includes the steps of securing the casing hanger and packer assembly on the running tool, lowering the running tool on a string to land the hanger on the landing seat, submitting the hanger in landed position, releasing the running tool from the hanger and picking up the running string and circulating to clean the upper portion of the casing hanger and packing assembly and interior of the well housing, lowering the running string to set the packer, closing the blowout preventer rams to pressure the annulus above the packer, test the effectiveness of the packer seal and recovering the running tool if the seal is satisfactory.
REFERENCES:
patent: 3468559 (1969-09-01), Ahlstone
patent: 3543847 (1970-12-01), Haeber
patent: 3871449 (1975-03-01), Ahlstone
patent: 3888306 (1975-06-01), Wetzel
patent: 3897823 (1975-08-01), Ahlstone
patent: 3913670 (1975-10-01), Ahlstone
patent: 3924678 (1975-12-01), Ahlstone
patent: 3924679 (1975-12-01), Jansen, Jr.
patent: 3933202 (1976-01-01), Ahlstone
patent: 4069865 (1978-01-01), Gazda et al.
Cameron Iron Works, Inc.
Novosad Stephen J.
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