Marine structure and method of drilling a hole by means of said

Details Marine structure and method of drilling a hole by means of said Marine structure and method of drilling a hole by means of said

1977-08-01

1979-01-16

Purser, Ernest R.

Boring or penetrating the earth

Boring a submerged formation

Boring from nonbuoyant support

175 72, 166335, 175 66, E21B 1502, E21B 718

Patent

active

041344618

ABSTRACT:
A bottom-positioned well drilling platform is provided with an enclosure in the lower part thereof which forms a chamber into which returning drilling mud and cuttings can be discharged. A pump and separate return line raise the mud alone from the chamber to the top of the platform while the cuttings remain in the chamber.

REFERENCES:
patent: 2482788 (1949-09-01), Moon
patent: 2684575 (1954-07-01), Pryor et al.
patent: 2923531 (1960-02-01), Bauer et al.
patent: 3603409 (1971-09-01), Watkins
patent: 3657895 (1972-04-01), Phelps
patent: 4063602 (1976-11-01), Howell et al.

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