Cemented Carbide API 3 1/2 Rotary Drilling Bit For Well Drilling
Rotary drill bits
Our rotary drilling bits includes geometries and cemented carbide
grades for different surface and compressive strengths,
abrasiveness, massiveness and homogeneity of rock as well as for
various penetration rates and capabilities and characteristics of
the drill rig. Innovative bearing technology and improved geometry,
materials and machining methods provide longer bearing life.
Products Parameters:
Bit Size | 139.7mm/ 5 1/2 inch (Outside Diameter) |
Thread Connection | 3 1/2REG API pin |
IADC CODE | IADC code 517 |
Bearing type | Journal sealed bearing bit with gauge protection |
WOB(KN/MM) | 0.37~1.05 |
Rotary speed | Operating Speed 80 rpm |
Make up torque | 28,000 - 32,000 ft-lbs |
RPM(r / min ) | 120~50 |
| Weight | 17.00kg |
Tooth Type | TCI bit |
Formation | Low compressive strength, high drill-ability and soft formation,
like shale, clay, sandstone, soft limestone,salt rock, etc. |
API Type | API 7-1 |
Structural features of tricone bit
1.Cutting structure this type tricone bits:
The durability of premium tungsten carbide insert is improved with
new formulas and new techniques
for insert bit.
2.Gauge structure this type tricone bits:
Multiple gaugeprotection with gauge trimmers on the heel of cone,
tungsten carbide inserts and
hardfacing on the shirttail increases gauge holding capability and bearing life.
3.Bearing structure of this type tricone bits:
High precision bearing with two thrust faces. Ball lock the cone.
Hardfaced head bearing surface.
Cone bearing inlaid with frictionreducing alloy and then silverplated. Abrasion
resistance and seizure resistance of the bearing are improved.
4.Seal and Lubrication of this type tricone bits:
Premium Oring, optimal seal compression and curved seal structure
can enhance the seal
performance.
5.Product Application this type tricone bits:
It can receive high WOB in the conventional drilling. It is
suitable for various formations by matching
cutting structure with different tooth shape, tooth density and tooth
exposure height.
Advantage of TCI tricone bit:
1. High-strength, high flexibility, high temperature and high wear
resistance.
2. High-precision metal seal.
3. Locking roller ball, to adapt to high-speed.
4. The use of high strength high toughness carbide teeth.
5. Hours in the rotary cone bit with the impact, crushing and
shearing the role of broken rock.
6. Cone bit to adapt to the soft, medium and hard of various strata.
7. Reasonable price and long working life.
Specifications
IADC code (the main) | 417 427 437 517 527 537 617 627 637 737 837 832 415 425 435 445 525 625 635 416 427 436 446 447 516 526 536 535 537 547 |
| Available size | From 2 7/8” to 26” Larger sizes for hole opener bit,reamer bit |
| Bearing type | Sealed bearing and non-sealed bearing HJ(metal sealed journal bearing) HA(rubber sealed journal bearing) aircooled bearing type |
| Formation or layer | Soft, medium soft, hard, medium hard, very hard formation |
Button size (extra fratures) | Button bit,saw steel 1) Y-Conical teeth 2) X- chisel teeth 3) K- wide teeth 4) G- Gauge protection |
| Material | Tungsten Carbide |
| Delivery terms | By sea or by air |
| Application | Petroleum & gas,water well, mining and tectonic industries,oil
field,construction,geothermal,directional boring,and underground
foundation work |
| Packing | wooden case |
| Payment Term | T/T(30% downpayment and 70%balance before shipping.) |
| MOQ | 1 Piece |
| Supply Ability | 1000 Pieces/month |
| Delivery Time | within 10-15 work days |
