?Made from
AISI?***5H alloy steel and fully heat
treated, all its physical properties conform to the latest API
Spec7. Heavy drill pipe is the transition section between ordinary
kelly and drill collar. It can relieve the stress concentration of
the combination of drill collar and kelly during the transition.
Besides, it can provide drill pressure and reduce the linked area
of drill stem and side wall, as well as wear rate of OD. There is
an upset section in the middle of drill pipe. The drill pipe and
joint are welded with cemented carbidehardbanding, which can
efficiently keep the pipe from wearing. HWDP can replace drill
collar and solve series of problems appearing in the vertical well
of softer geological structure. Its advantages are as
follows:
?
Reducing torque in high-rpm or deep
drilling.
Bring along the drill collar of stem
within less time.
Reducing the tiresome damage of
tool-joint connection.
Easy for the stem?s handling and
operating
Helpful for keeping the direction of
directional well
? Our IHWDP, Shanxi Weigao Integral
Heavy Weight Drill Pipe is welded with standard hardbanding on the
two ends? joints and middle-upset section. Both pin and box end
have one 4? hardbanding (one 1? hardbanding on *8shoulders of the
box end can be added according to customers? requirement) and the
middle-upset section has one 3? hardbanding. The sickness of
hardbanding is within 1/8? of the abutting surface (it can be
increased if needed).
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