Method for forming an underground cavity

Details Method for forming an underground cavity Method for forming an underground cavity

1975-07-01

1977-10-25

Purser, Ernest R.

Boring or penetrating the earth

Boring a submerged formation

175171, 175213, E21B 712

Patent

active

040552241

ABSTRACT:
A caisson and connecting conductor pipe sections are lowered to a predetermined position on the ocean underwater floor. A drill stem having a combined drilling and reaming tool is positioned within the conductor pipe and caisson. Drilling mud is reversed-circulated through the annular space between the conductor pipe and caisson and the drill stem, the drilling mud returning through the drill stem. The tool mounted on the drill stem is utilized to drill to a predetermined depth whereupon one or more reaming arms open outward from the tool and are rotated, thereby cutting out a volume of the ocean floor within which the caisson may be positioned.

REFERENCES:
patent: 987266 (1911-03-01), Smith
patent: 1665795 (1928-04-01), Sipe
patent: 2076379 (1937-04-01), Marsden
patent: 3063500 (1962-11-01), Logan
patent: 3262508 (1966-07-01), Price
patent: 3380256 (1968-04-01), Rebikoff
patent: 3648788 (1972-03-01), McKinney
patent: 3677113 (1972-07-01), Bowles
patent: 3757876 (1973-09-01), Pereau

Affiliated with

Also associated with

Rating

Method for forming an underground cavity does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for forming an underground cavity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for forming an underground cavity will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-119079