Offshore drilling of large diameter holes in rock formations

Details Offshore drilling of large diameter holes in rock formations Offshore drilling of large diameter holes in rock formations

1981-04-30

1983-11-15

Purser, Ernest R.

Boring or penetrating the earth

Boring a submerged formation

Boring from nonbuoyant support

E21B 7136

Patent

active

044150458

ABSTRACT:
A drilling rig comprises a platform (10) supported above a sea surface (14) by legs which extend to the sea bottom (16). A drill guide (30) of rigid open framework construction extends down from the platform to the sea bottom. The drill guide is only minimally affected by turbulent sea conditions because of its open framework construction. A hardenable substance such as concrete (54) is poured into a flexible bag (50) at the lower end of the drill guide to form a solid structure conforming to the uneven sea bottom and having a substantially flat upper surface. Drilling takes place through the hardenable substance and into the underlying sea bottom.

REFERENCES:
patent: 3955372 (1976-05-01), Pogonowski et al.
patent: 4220421 (1980-09-01), Thorne
patent: 4269544 (1981-05-01), Rusche
patent: 4323118 (1982-04-01), Bergmann
Floating Rigs Build Piers, by H. K. Glidden, Roads & Streets, Feb. 1965.

Affiliated with

Also associated with

Rating

Offshore drilling of large diameter holes in rock formations does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Offshore drilling of large diameter holes in rock formations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Offshore drilling of large diameter holes in rock formations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-155247