Drill pipes for rotary-vibratory drills

Details Drill pipes for rotary-vibratory drills Drill pipes for rotary-vibratory drills

1990-10-31

1992-02-11

Kisliuk, Bruce M.

Boring or penetrating the earth

With tool shaft detail

285286, 285330, E21B 1700, F16L 1302

Patent

active

050868543

ABSTRACT:
A drill pipe for combination rotary-vibratory drills. The pipe includes an elongated pipe member and a connector for connecting the drill pipe to another drill pipe. The connector includes a threaded member at one end of the pipe member. The connector and pipe member have overlapping portions. The portion of one of the members has a plurality of circumferentially spaced-apart slots which are generally aligned axially with the pipe member, and welds along the slots securing the pipe member and connection member together.

REFERENCES:
patent: 1260690 (1918-03-01), Liady
patent: 1293871 (1919-02-01), Murray
patent: 1515355 (1924-11-01), Mitchell
patent: 1700319 (1929-01-01), Kjekstad
patent: 1853549 (1932-04-01), Clark
patent: 1993269 (1935-03-01), Fletcher
patent: 2034808 (1936-03-01), Graham
patent: 2132575 (1938-10-01), Moise
patent: 2152076 (1939-03-01), Menough
patent: 2711912 (1955-06-01), Boice
patent: 3512811 (1970-05-01), Bardgette et al.
patent: 4099745 (1978-07-01), Cobbs
patent: 4735444 (1988-04-01), Skipper

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