API 17 1/2" IADC 517 Tricone Roller Cone Drill Bit for HDD Well Drilling 17 1/2" 517 manufacturer from China Hebei Goldman Petroleum Machinery Co., Ltd

API 17 1/2" IADC 517 Tricone Roller Cone Drill Bit for HDD Well Drilling

Price:	870.0 USD
Payment Terms:	T/T,L/C,WU
Place of Origin:	Hebei, China (Mainland)


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Product Detail

Model No.: 17 1/2" 517

Workpiece and Weight: Instrument Machine Tool

tricone bit: drag bit

Processing: Milling Machine

Brand Name: goldman

pdc bit: rock bit

We specialize ourselves in researching and production of rock drilling bits, mainly including tricone bits, PDC bits, drag bits, HDD hole opener

Product Description

What is the feature of rock bit?

1.The strength and wear resistance of inserts are improve by using carbide inserts with high strengthand high wear resistance.

2.Surface of the high precision bearing heat treated by using advanced heat treatment process to improve the load capacity and service life of the bearing.

3.The service life of the bearing is further extended by adopting harder and mort wear resistant material for thrust bearing.

4. Preventing reflux structure has dual function, it can avoid air counterflow and dust entering into bearing when the air-compressor stop working accidentally, and separate air and water in order to avoid water entering into bearing when it works normally to prolong the life of bearing.

5.This series oil well rock bit use Sealed roller bearing structure. With rollers arranged in grooves recessed in the cone body, the size of the bearing journal is increased.

6.Thrust bearing surfaces are hardfaced and treated with friction reducing technology.

7.This series oil well rock bit use Journal bearing. Hardfaced head bearing surface. Cone bearing inlaid with friction reducing alloy and then silver-plated. The load capacity and seizure resistance of the bearing is greatly improved.

What is the advantage of rock bit?

1. It can recycle; it just consume one third of its lifespan in oil exploration process.

2. It can withstand high wob under the conventional drilling rate.

What is the parameters of rock bit?

Size		Type
In	mm	Type
8 1/2	215.9	SVT437G SVT4 Drill bit size ,type recommended parameter 47G SVT517G SVT527G SVT537G SVT547G SVT617G
9 1/2	241.3	SVT437G SVT447G SVT517G SVT527G SVT537G SVT547G SVT617G
12 1/2	311.1	SVT437G SVT447G SVT517G SVT527G SVT537G SVT547G SVT617G
IADC	Parameters	Apply to formation

Rock and many different kinds of earning, broad scope, from soft to hard strata have a corresponding bit types to choose from, in practice the drilling operation, according to the nature of the drilled formation, chooses the appropriate type of bit, in order to obtain high mechanical drilling rate and drilling footage.

IADC	Parameters		Apply to formation

	Bit pressure(KN/mm)	Rotate speed (r/mm)
437 447	0.35~0.9	240~70	Low compressive strength and high drill ability of extremely soft stratum, such as clay, shale, gypsum and halite, soft shale, soft limestone
517 527	0.35~1.0	220~60	Low compressive strength and high drill ability of soft stratum, such as clay, shale, gypsum and halite, soft shale, soft limestone
537 547	0.45~1.0	220~50	Low compressive strength and high drill ability of extremely soft stratum, such as clay, shale, gypsum and halite, soft shale, soft limestone
617	0.45~1.0	200~50	Hard strata with high compressive strength, such as abrasive shale, limestone, sandstone, dolomite and anhydrite marble