Subsea drilling cuttings collector and method of drilling

Details Subsea drilling cuttings collector and method of drilling Subsea drilling cuttings collector and method of drilling

1992-08-11

1994-02-08

Bagnell, David J.

Boring or penetrating the earth

Boring a submerged formation

175161, 175209, E21B 712, E21B 1701

Patent

active

052842134

ABSTRACT:
A cuttings collector will collect cuttings generated while drilling through conductor pipe for the first string of casing. The cuttings collector has a riser that secures to the exterior of an outer wellhead housing. A cage surrounds the riser. Ports at the upper end of the riser allow cuttings to flow out the riser and back down into the cage. A funnel guide locates at the upper end of the riser to guide the drill bit and the lower end of the first string of the casing. The running tool for the first string of casing lands an inner wellhead housing in the outer wellhead housing and simultaneously engages the cuttings collector to retrieve it. Cuttings from the collector will be dumped from the cuttings collector near the surface. The cuttings collector telescopes from an extended to a collapsed position for storage.

REFERENCES:
patent: 4060140 (1977-11-01), Barrington
patent: 4220207 (1980-09-01), Allen
patent: 5188180 (1993-02-01), Jennings

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