Wellhead assembly

Details Wellhead assembly Wellhead assembly

1982-03-15

1985-05-07

Callaghan, Thomas F.

Pipe joints or couplings

Pipe to discreet nipple or sleeve to plate

Nipple sealed to plate

285142, F16L 700

Patent

active

045154007

ABSTRACT:
A wellhead assembly with an increased through bore for passing slightly oversized drill bits therethrough with a substantially reduced landing shoulder, and an improved landing assembly which transfers a portion of the stresses through the energizing ring and support ring into the wellhead body along the straight bore above said landing shoulder.

REFERENCES:
patent: 2937891 (1960-05-01), Gressel
patent: 3114566 (1963-12-01), Coberly et al.
patent: 3367002 (1968-02-01), Johnson
patent: 3438654 (1969-04-01), Jackson, Jr. et al.
patent: 3684016 (1972-08-01), Hull et al.
patent: 4056272 (1977-11-01), Morrill
patent: 4295665 (1981-10-01), Pierce
patent: 4346919 (1982-08-01), Morrill
patent: 4455040 (1984-06-01), Shinn

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