Hybrid coiled tubing/conventional drilling unit

Boring or penetrating the earth – With above-ground means to feed tool

Patent

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166 772, E21B 3300

Patent

active

058425306

ABSTRACT:
There is described an apparatus for the drilling and servicing of bore holes in the earth, comprising a first sub-assembly adapted for the drilling and servicing of bore holes using jointed and coiled tubing, a second sub-assembly adapted for the drilling and servicing of bore holes using a continuous length of coiled tubing, and a platform adapted to support the first and second sub-assemblies thereon.

REFERENCES:
patent: 3516183 (1970-06-01), Serota
patent: 5103912 (1992-04-01), Flint
patent: 5215151 (1993-06-01), Smith et al.
patent: 5244046 (1993-09-01), Council et al.
patent: 5411085 (1995-05-01), Moore et al.
patent: 5454419 (1995-10-01), Vloedman

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