Assembly for drill pipes
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United States of America Patent
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-
Mar 4, 2003
Grant Date -
N/A
app pub date -
Nov 30, 2000
filing date -
Apr 14, 1998
priority date (Note) -
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status (Latency Note)
Importance
Abstract
In an assembly for cylindrical drill pipes made for the transport of different kinds of fluids, a combined flange assembly can combine the functions and can be assembled under low time consumption and at low cost. Drill rods are connected by axially directed bolts inserted in the outer wall of a first drill rod (1) and extending axially past the end of the first drill rod (1) into internally threaded blind holes (21, 22) in the next drill rod to be connected to the first drill rod. Each terminal surface of a drill rod is made with arrangements (13-17, 23-27) for at least one coupling plug (31, 33) for the transport of different kinds of fluids in the drill string.
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