Construction and use of subsea bore holes

Details Construction and use of subsea bore holes Construction and use of subsea bore holes

1987-03-12

1989-03-28

Taylor, Dennis L.

Hydraulic and earth engineering

Soil remediation

In situ contaminant removal or stabilization

405195, 405210, 405227, B09B 100

Patent

active

048158941

ABSTRACT:
It is proposed to construct a large diameter subsea bore hole (e.g. about 10 to 50 meters in diameter) provided with a stable wall by a method which comprises drilling a number of bore holes around the circumference of a ring of large diameter, supplying to the ring bore holes material to locally stabilize the surrounding geologic formations, and forming a central bore hole, or shaft, within the perimeter of the ring by drilling and reaming or by excavation. The ring bore holes and locally stabilized geologic formations form a stable wall of large diameter for the central bore hole shaft. It is contemplated that a large diameter subsea bore hole of the type described above could be used for the safe emplacement and disposal beneath the seabed of a large waste job object such as the shielded reactor core of a decommissioned nuclear submarine, or of other waste objects containing radioactive material.

REFERENCES:
patent: 367547 (1887-08-01), Poetsch
patent: 371389 (1889-10-01), Smith
patent: 736308 (1903-08-01), Sooysmith
patent: 3271962 (1966-09-01), Dahms et al.
patent: 3754403 (1973-08-01), Mott et al.
patent: 3999395 (1976-12-01), Broms et al.
patent: 4187039 (1980-02-01), Jahns et al.
patent: 4597444 (1986-07-01), Hutchinson
patent: 4618286 (1986-10-01), Michel et al.

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