1.Advantages of our tricone bits
(1) strong resistance to abrasion and impact resistance.
(2)Cutter's quality performance is good.
(3)Long work life.
(4)Stocks adequate, time delivery.
(5)Rich experience in drill bit.
(6)High quality, competitive price
2.detailed description of the tricone bits
Available sizes: | 4 5/8"(118mm), 5 7/8"(149mm), 6"(152mm), 6 1/2"(165mm), 6 5/8"(168mm), 7 1/2"(190mm), 7 7/8"(200mm), 8 1/2"(215.9mm), 9 1/2"(241mm), 9 5/8"(245mm), 11 5/8"(295mm), 12 1/4"(311mm), 13 5/8"(346mm), 14 3/4"(374mm), 15 1/2"(394mm) 16"(406mm), 17 1/2"(445mm), 18"(457mm), 26"(660mm) |
Model NO. | 437,447,517,527,537,547,617,637,737 |
IADC code | 116,117,126,127,136,137,216,217,316,317,346,347 |
RPM(r/min) | 140~60 |
WOB(KN/mm) | 0.35~1.0 |
Thread Connection | 7 5/8 reg pin |
Bearing type | Sealed bearing and non-sealed bearing HJ(metal sealed journal bearing) HA(rubber sealed journal bearing) Aircooled bearing type |
Applicable Formations | Soft formations with low compressive strength and high drillability, such as mudstone, gypsum, salt, soft limestone, etc |
Circulation system | Mud pump |
Material | Alloy steel, carbide |
Delivery terms | By sea or by air |
Application | Petroleum and gas, water well, mining and tectonic industries, oil field, construction, geothermal, directional boring and underground foundation work |
Export Markets | North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe |
Product Description
1. Cutting Structure
In response to the characteristics that inserts in different areas on the cone have different cutting actions, conical inserts are placed in permanent contact area and wedge inserts are placed in alternative contact area so that the drilling efficiency is greatly improved. Wear resistance of cutting structure is enhanced by setting diamond inserts in the permanent contact area of the cone where inserts are severely worn. Tungsten carbide inserts are placed on cone top face to protect cone body from abrasive erosion.
2. Gauge Structure
With active cutting gauge protection inserts on bit body, the bit has good gauge protection and up drill capability.
3. Bearing Structure
High precision journal bearing. Balls lock the cone. Hardface heard bearing surface. Cone bearing inlaid with friction-reducing alloy. Abrasion resistance and seizure resistance of the bearing are improved. Compared with three cone bit, the leg bearing is bigger, so it can receive higher WOB and high reliability.
