Description
Hanlinsky Tungsten carbide core bits is suitable to mudstone,
shale, backfill stratum formation and clay, especially for soft
formations, the complicated formations which need mud to protect
borehole wall and formations in which the bit easily gets adhered
by debris.
Characteristics
This bit uses eight-square, special exploration T. C., arranged by
steps. Helical strengthening bars are used along steel body for
protection, prolonging both steel body life and bit life.
The helix direction is right, and during drilling into the soft
formation in which there is pretty much rock powder, the mud brings
out rock powder along the helical gutter. The gutter has a function
of discharging debris in single direction, which obviously improves
the debris discharging, raises drilling speed and prolongs bit
life.
T. C. Core bit uses seismic grade tungsten-carbide as the cutting
media. Tungsten-carbide does not possess the hardness of diamond
and as such has a limited as a core drilling cutting media.
Tungsten-carbide bits are however a very cost effective means of
drilling softer unconsolidated formations.