Medium To Hard Formation Impregnated Diamond Core Drill Bit bq nq
Impregnated diamond bits have the widest range of application. They
are the most commonly useful bits from medium to super hard
formations in the mineral exploration industry. The hardness and
abrasive of the rock formation are the key factors to determine the
diamond specifications, concentration and matrix hardness.
Toothed bits can get higher drilling efficiency when it is drilling
at dense or abrasive stratum with lower drilling speed and
pressure. It was especially effective at coal formation , using
toothed bits can get better water flowing and drilling footage
Nowadays , impregnated diamond bits have been widely used in
wire-line drilling series .
C Series(same as Q Series):
T2 Series: T2 46,T2 56,T2 66,T2 76,T2 86,T2 101
T6 Series: T6 76,T6 86,T6 101,T6 116,T6 131,T6 146, T6S 101
T Series: T36,T46,T56,T66,T76,T86
Z Series: Z46,Z56,Z66,Z76,Z86,Z101,Z116,Z131,Z146
B Series: B36,B46,B56,B66,B76,B86,B101,B116,B131,B146
WF Series: HWF,PWF,SWF,UWF,ZWF
WT Series: RWT,EWT,AWT,BWT,NWT,HWT
WM Series: EWM,AWM,BWM,NWM
WG Series: EWG,AWG,BWG,NWG,HWG
|Size||Outside Diameter||Inside Diameter|
Impregnated Bit Maxtri Height :
Standard Impregnated Bits are available with different Matrix
Height: 6mm 8mm 9mm 10mm 12mm 14mm generally , 6mm height is
recommended for conventional bits ;8mm or higher are recommeded for
wireline bit .
Diaond bits crown shap and applications:
Flat : applicable to drilling different levels of hardness or
abrasive formation , generally for single and dual tube drill bits.
Semi-round:good distribution of the diamond at bit face, adapt to a
small broken or loose formation ,applicable to drilling medium-hard
and hard formation .
Ladder:applicable to drilling medium –hard, broken or iterbedded
formations, hole deviation can be prevented .
Serrated: applicable to drilling hard and dense formation ,
enhancing drilling rate.
Ladder serrated: applicable to medium –hard, have good stability
during the drilling .
Gear Type: applicable to harder or dense formations, enhancing
drilling rate .
Bottom Jetting : applicable to drilling sedimentary or metamorphic
formations which containning more power ,high coring recovery rate
and avoid excessive washout of core.
Waterway Configurations :
Standar Type (no discharge hole) : waterway without discharge hole
is the standard type ,applied in many normal formations.
Wide Type : this waterways is wider than the standard type ,
applied in formations in which there is much rock debris, eg clay,
shale ,coal gangue, etc
Turbo Type : it is suitable for relatively hard fractured
formations or hard competent formations .
Wide Turbo Type :suitable for medium hard fractured formations
where there is much slurry and rock debris.
Round Face Discharge Hole Type: it is suitable for triple core
barrels, to improve recovery rate . it reduces the flushing fluid’s
erosion against the core during drilling
Slot Face Discharge Hole Type : it is offen adopted in PDC bit ,
TSP Bit and has bigger flow capacity ,which minimizes the
occurrence of discharge hole blockage . it is suitable for drilling
in fractured formations where there is much flushing fluid and rock
Trapezoid type :
It is suitable for the core bits with a thick matrx; it
faclilitates debris removal and flow capacity and make the bit wear
out evenly .