Basical Specification | |
Size of Rock Bit | 8 1/2 inches |
215.9 mm | |
Bit Type | Tungsten Carbide Insert (TCI) bit |
Thread Connection | 4 1/2 API REG PIN |
IADC Code | IADC617G |
Bearing Type | Journal Bearing |
Bearing Seal | Metal sealed/Rubber sealed |
Heel Protection | Available |
Shirttail Protection | Available |
Circulation Type | Mud Circulation |
Drilling Condition | Rotary drilling,high temp drilling,deep drilling,motor drilling |
Total Teeth Count | 138 |
Gage Row Teeth Count | 45 |
Number of Gage Rows | 3 |
Number of Inner Rows | 10 |
Jounal Angle | 36° |
Offset | 3 |
Operating Parameters | |
WOB (Weight On Bit) | 24,268-53254 lbs |
108-237KN | |
RPM(r/min) | 300~60 |
Recommended upper torque | 16.3KN.M-21.7KN.M |
Formation | Soft formation of low crushing resistance and high drillability. |
Model | Steel tooth bit & TCI Bit |
IADC CODE | 111,114,115,116,117,121,124,125,126,127,131,135,136,137,214,216,217 225,226,226,235,237,314,315,316,317,325,326,327,335,336,337,347 |
417,427,437,517,527,537,617,627,637,737,837,832,415,425,435,445 525,625,635,412,415,416,422,425,427,435,436,446 447,516,526,532,535,536,537,542,545,547,615,622,632,635 642,645,715,722,725,732,735,742,745,825,832,835,845 | |
available sizes: | From 2 7/8 to 26"Larger sizes for hole opener bit ,reamer bit |
advantage | most favourable price and best qualtity |
bearing type: | Sealed bearing and non-sealed bearingHJ(metal sealed journal bearing) HA (rubber sealed journal bearingAircooled bearing type |
Formation or layer | soft ,medium soft ,hard,medium hard,very hard formation |
Button size (extra features) | Button bit,saw teeth 1) Y-Conical teeth 2) X-Chisel teeth 3) K- wide teeth 4) G- Gague protection |
Material | Alloy steel ,carbide |
Application | Petroleum & gas ,water well ,mining and tectonic industries ,oil field, construction, geothermal, directional boring, and underground foundation work. |