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. |