Disconnectable riser for deep water operation

Details Disconnectable riser for deep water operation Disconnectable riser for deep water operation

1977-10-14

1980-11-18

Purser, Ernest R.

Boring or penetrating the earth

Boring a submerged formation

166350, 166359, E21B 7128

Patent

active

042340470

ABSTRACT:
An offshore marine structure for drilling wells into the ocean floor including a floating vessel which carries the necessary drilling equipment. A riser which extends from the vessel to a well head at the ocean floor, encloses a drill string and permits circulation of the drilling mud and fluids. The riser is comprised of at least two detachably connectable segments, one of which can be moved with the floating vessel, while the other remains buoyantly in place until such time as the two segments are reconnected.

REFERENCES:
patent: 2512783 (1950-06-01), Tucker
patent: 3196958 (1965-07-01), Travers et al.
patent: 3336572 (1967-08-01), Paull et al.
patent: 3424241 (1969-01-01), Triplett
patent: 3855656 (1974-12-01), Blenkarn
patent: 3999617 (1976-12-01), Ilfrey et al.
patent: 4047579 (1977-09-01), Wilckens et al.
patent: 4063602 (1977-12-01), Howell et al.

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