China PDC Bits Matrix Body 8 3 4′′

Product specification
Number of blade
7
Cutter size (mm)
16MM
Nozzle QTY Type
7NZ
Gauge length
2.5"
Junk slot area(in^2)
20.0
Connection
4-1/2"API Reg
Make up Torque(KN. M)
49.6-51.4
Operating parameters
Rotary speed(rpm)
60-350
Weight on bit(KN)
13-115
Max wob(KN)
115
Flow rate (lps)
28-70
Applications and features
Applications
Recommended Formation: Soft to Medium hard formation with low compressive strength interbedded with hard layers. Rock type: Clay stone., Marl. Lignite. Sandstone. Tuff.
Features
The type is a matrix body PDC bit with 7 curved blades and medium short parabolic profile Force-balance design and Low

ROLLER
CONE BITS
ROLLER CONE BIT
(M/H)
FORMATION
HARDNESS
FORMATION
ROCK TYPE
COMPRESS
STRENGTH
WEM
OBM
111/124
15-30
18-33
Very
soft
soft formation with sticky layers and low compressive strength
clay,silts,
sands
<25 MPa
116/137
437
9-15
12-18
soft
soft formation with low compressive strength and high drill ability
claystone,marl,
lignite,tuff,
sandstone
25-50 MPa
126/139
517/527
4.5-9
6-12
Medium
soft
soft to medium formation with low compressive strength interb dded with hard layers
claystone,marl
lignite,sandstone
silts anhydrrites
tuff
50-75 MPa
211/217
517/537
2.5-6
3-6
Medium
medium to hard formation with high compressive strength and small abrasive layers
mudstone ,
limstone,
anhydrites,
sandstone
75-100 MPa
211/236
537/617
1.5-2.5
1.5-3
Medium
hard
hard and dense formation with very high compressive strength but non-abrasive
limestone,
anhydrites,
dolomite
100-120MPa
311/347
627/637
1-1.5
1-1.5
Hard
hard and dense formation with very high compressive strength and some abrasive layer
shale,sandstone
,siliceous,
siltstone
100-200MPa
637 /737 /837
1
1
Very
hard
extremely hard and abrasive formtions
quartzite, lgneous ,rocks
>200MPa