Boring or penetrating the earth – With tool shaft detail
Patent
1989-05-26
1990-07-10
Kisliuk, Bruce M.
Boring or penetrating the earth
With tool shaft detail
175321, 138113, 138114, 2851331, 2851332, 285134, E21B 1718
Patent
active
049400983
ABSTRACT:
A reverse circulation drill rod of the dual tube type having a pin and box at opposite ends with a floating inner tube concentrically situated, the inner tube permitted longitudinal freedom of movement. A plurality of inwardly protruding radial directed lands adapted to encompass and align the inner tube are contained within each box and pin. Compression springs attached to the inner tube residing interiorly to the outer tube provide the longitudinal freedom of movement within limits. As the sections of drill rod are assembled vertically during operation, freedom of lengthwise movement by the inner tube allows stacking of the inner tubes in order that a seal be achieved between the square ends of each inner tube section. Compressed air or liquid is forced down the cylindrical space annulus formed between the outer tube and the inner tube, and drill bit grindings or rock fragments, together with the fluid, is brought to the ground surface in the conduit provided by the inner tube for simultaneous analysis.
REFERENCES:
patent: 1547461 (1925-07-01), Steele
patent: 2786652 (1957-03-01), Wells
patent: 2849214 (1958-08-01), Hall
patent: 3077358 (1963-02-01), Costa
patent: 3280925 (1966-10-01), Becker et al.
patent: 3297100 (1967-01-01), Crews
patent: 3489436 (1970-01-01), McClure
patent: 3552779 (1971-01-01), Henderson
patent: 3664441 (1972-05-01), Carey
patent: 3664443 (1972-05-01), Campbell
patent: 3786878 (1974-01-01), Chapman
patent: 3807514 (1974-04-01), Murrell
patent: 3998479 (1976-12-01), Bishop
patent: 4012061 (1977-03-01), Olson
patent: 4067596 (1978-01-01), Kellner et al.
patent: 4691790 (1987-09-01), Reichman et al.
Kisliuk Bruce M.
McClanahan J. Michael
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