Method for drilling wellbores from an offshore platform

Details Method for drilling wellbores from an offshore platform Method for drilling wellbores from an offshore platform

1980-05-05

1981-12-15

Novosad, Stephen J.

Wells

Submerged well

Means removably connected to permanent well structure

166350, 166354, 166362, 166366, 175 8, E21B 7132, E21B 4301, E21B 43013

Patent

active

043054684

ABSTRACT:
A method for drilling wellbores from an offshore platform to penetrate a subterranean formation using a combination of surface drilling techniques and subsea drilling techniques to achieve an improved effectiveness by avoiding the necessity for large conduits communicating the ocean floor and the offshore platform.

REFERENCES:
patent: 3414067 (1968-12-01), Bauer et al.
patent: 3459259 (1969-08-01), Matthews
patent: 3618661 (1971-11-01), Peterman
patent: 3934528 (1976-01-01), Horton et al.
patent: 3988898 (1976-11-01), McDonald
patent: 4192383 (1980-03-01), Kirkland

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