API factory of rock roller cones bits IADC437 8.5″ for drilling
Product Description
Metal Face sealed TCI Drill Bit IADC437 8 1/2" (215mm or 216mm) is for soft formation well drilling.
1>8 1/2"(215mm or 216mm) is a regular size in deep well drilling like oil and gas well drilling, and it is also a regular size in horizontal directional pilot hole drilling.
The thread connection is 4 1/2 API REG PIN.
Product Specification
|
Basical Specification |
|
|
Size of Rock Bit |
8.5 inches |
|
215.90 mm |
|
|
Bit Type |
TCI Tricone Bit |
|
Thread Connection |
4 1/2 API REG PIN |
|
IADC Code |
IADC 437G |
|
Bearing Type |
Journal Sealed Bearing with Gauge Protection |
|
Bearing Seal |
Elastomer/Rubber |
|
Heel Protection |
Available |
|
Shirttail Protection |
Available |
|
Circulation Type |
Mud Circulation |
|
Drilling Condition |
Rotary drilling,high temp drilling,deep drilling,motor drilling |
|
Total Teeth Count |
80 |
|
Gage Row Teeth Count |
33 |
|
Number of Gage Rows |
3 |
|
Number of Inner Rows |
7 |
|
Jounal Angle |
33° |
|
Offset |
8 |
|
Operating Parameters |
|
|
WOB (Weight On Bit) |
17,077-49,883 lbs |
|
76-222KN |
|
|
RPM(r/min) |
300~60 |
|
Recommended upper torque |
16.3-21.7KN.M |
|
Formation |
Soft formation of low crushing resistance and high drillability. |












