Stabilizer for single or dual tube drilling

Details Stabilizer for single or dual tube drilling Stabilizer for single or dual tube drilling

1976-03-08

1978-01-31

Purser, Ernest R.

Boring or penetrating the earth

With tool shaft detail

Shaft carried guide or protector

308 4A, E21B 1710

Patent

active

040711013

ABSTRACT:
A stabilizer for use with a string of single tube or dual concentric drill pipe above a bit having analogous tubular members adapted for fluid tight interconnection with the pipes of said string to provide a conduit for drilling fluid. A stabilizer means encircles the stabilizer body and is adapted to contact the hole wall. The stabilizer means includes a sleeve bearing mounted to rotate with respect to the stabilizer body and a stabilizer sleeve mounted stationary on the sleeve bearing. A port means in the stabilizer body provides fluid communication between the drilling fluid conduit and the stabilizer sleeve and/or thrust bearing. An exit port means in the lower end of the stabilizer means provides fluid communication between the stabilizer sleeve bearing and the outside of the stabilizer.

REFERENCES:
patent: 790330 (1905-05-01), Terry
patent: 2072320 (1937-03-01), Thomas
patent: 2696367 (1954-12-01), Robishaw
patent: 2850264 (1958-09-01), Grable
patent: 3104134 (1963-09-01), Nielsen et al.
patent: 3109501 (1963-11-01), Pugh
patent: 3208539 (1965-09-01), Henderson
patent: 3400773 (1968-09-01), Tiraspolsky et al.
patent: 3503461 (1970-03-01), Shirley

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