Lightweight drill rod

Details Lightweight drill rod Lightweight drill rod

1979-05-24

1980-12-23

Callaghan, Thomas F.

Pipe joints or couplings

With means blocking release of holding means

Key or pin

285333, F16L 1500

Patent

active

042406528

ABSTRACT:
Described is an improved lightweight section of drill rod which is adapted to be coupled with like sections of drill rod in making up a drill string for use with oil well drilling rigs or the like. This drill rod comprises a length of hollow cylindrical aluminum pipe with steel tool joints threaded into the ends thereof. Dowel pins are used to permanently and securely attach the tool joints to the pipe ends.

REFERENCES:
patent: 1287431 (1918-12-01), Quarles et al.
patent: 1344774 (1920-06-01), Stafford
patent: 2073093 (1937-03-01), Brantly
patent: 2992021 (1961-07-01), Nay
patent: 3126214 (1964-03-01), Wong et al.
patent: 3667784 (1972-06-01), Hokanson et al.

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