Drill pipe assembly
OwnerJames W. Breihaninventor
Life of this patent
Estimating the term…
Abstract
A drill pipe assembly having an elongate tubular pipe section with a first end and a second end, a first threaded tool joint having an outer surface and being attached to the first end of the pipe section, a second threaded tool joint having an outer surface and being attached to the second end of the pipe section, one of the first and second tool joints having at least one radially outwardly facing annular groove formed in the outer surface thereof and a ring of elastomeric material received in the groove, the ring having a radially inner surface and a radially outer surface, the ring preferably having an index signifying a characteristic of the drill pipe.
Claims22
A drill pipe assembly comprising:
- an elongate, tubular pipe section having a first end and a second end;
- a first, threaded tool joint having an outer surface and being attached to said first end of said pipe section;
- a second, threaded tool joint having an outer surface and being attached to said second end of said pipe section;
- at least one of said first and second tool joints having at least one radially outwardly facing, annular groove formed in the outer surface thereof;
- a ring of elastomeric material received in said at least one groove;
- and
- an index on said ring.
A drill pipe assembly comprising:
- an elongate, tubular pipe section having a first end and a second end;
- a first, threaded tool joint having an outer surface and being attached to said first end of said pipe section;
- a second, threaded tool joint having an outer surface and being attached to said second end of said pipe section;
- at least one of said first and second tool joints having at least one radially outwardly facing, annular groove formed in the outer surface thereof;
- and
- a ring of elastomeric material received in and substantially filling said at least one groove.
Dependencies are inferred from the claim text.