Stabilizer sleeve for drill string

Details Stabilizer sleeve for drill string Stabilizer sleeve for drill string

1987-08-27

1989-04-25

Dang, Hoang C.

Boring or penetrating the earth

With tool shaft detail

Helix or helically arranged structure

175324, 175325, E21B 1710, E21B 2100

Patent

active

048238910

ABSTRACT:
A drill string stabilizer includes a cylindrical sleeve 11 coaxially surrounding a central tubular element 10 and fixed thereto by a plurality of helical blades 17 extending between the facing surfaces of the sleeve and the element. Converging truncated cones 13, 16 are provided on both ends of the sleeve. The upwardly flowing drilling mud establishes an annular fluid bearing between the sleeve and the borehole, while the helical blades implement a pumping function to enhance the discharge of the mud and cuttings.

REFERENCES:
patent: 1616666 (1927-02-01), Nebergall
patent: 1721004 (1929-07-01), Debose
patent: 1767198 (1930-06-01), Baker
patent: 2021451 (1935-11-01), Johnson
patent: 2602512 (1952-07-01), Baker
patent: 2776111 (1957-01-01), Vance
patent: 4583603 (1986-04-01), Dorleans et al.

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