Drill string joint

Details Drill string joint Drill string joint

1983-08-22

1984-11-13

Kundrat, Andrew V.

Pipe joints or couplings

Particular interface

Interlocked or overlapped

403334, F16L 2500

Patent

active

044821735

ABSTRACT:
A drill string joint of the type shown and described in Rassieur U.S. Pat. No. Re. 26,938, in which the coupling surfaces are tapered.

REFERENCES:
patent: Re26938 (1970-08-01), Rassieur
patent: 1542266 (1925-06-01), Palmer et al.
patent: 2463124 (1949-03-01), Sims

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