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Durable Tricone Rock Bit / Hard Rock Drill Bits 12 1/4" FG615G For Well Drilling

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China FLRT Bit certification
China FLRT Bit certification
Good result of the FLRT natural diamond drill bit. Thank you.

—— Bryan

We have ordered the tricone bits to drill shallow oil well and some times make hdd hole openers. The quality is good

—— Petter

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Durable Tricone Rock Bit / Hard Rock Drill Bits 12 1/4" FG615G For Well Drilling

Durable Tricone Rock Bit / Hard Rock Drill Bits 12 1/4" FG615G For Well Drilling
Durable Tricone Rock Bit / Hard Rock Drill Bits 12 1/4" FG615G For Well Drilling

Large Image :  Durable Tricone Rock Bit / Hard Rock Drill Bits 12 1/4" FG615G For Well Drilling

Product Details:
Place of Origin: China
Brand Name: FLRT
Certification: API-7-1, ISO 9001:2008
Model Number: 12 1/4" FG615G
Payment & Shipping Terms:
Minimum Order Quantity: 20pcs
Packaging Details: plywood box / iron box
Delivery Time: 5~45 workdays
Supply Ability: 300pcs per quarter
Detailed Product Description
Bearing Type: Sealed Roller Cutting Material: TCI
Standard: API-7-1, ISO 9001:2008 Series: Rock Roller Bits
IADC: 615 FG: FLRT Sealed Roller Bearing Type
Formation: Hard
High Light:

hard rock drill bits

,

water well drill bits

12 1/4" FG615G , Tricone Rock Bit , Well Drilling Bit , Hard Formation , TCI Bit

 

 

RECOMMENDED DRILLING PARAMETERS FOR APPLICATION

 

Types & IADC Code 415

435

445

515

525

535

545

615

625

635
WOB KN/mm(Bit Dia.) 0.35~0.95 0.35~0.95 0.4~0.7 0.4~0.7 0.45~1.1 0.5~1.2
Lb/in. (Bit Dia.) 2000~5428 2000~5428 2285~4000 2285~4000 2571~6285 2857~6857
Rotation Speed (Rpm) 150~60 150~60 140~80 120~80 110~60 100~50
 

 

 

ROLLER CONE BIT CONE DESIGN

 

In some formations, it is advantageous to design the cones and their configuration so that they do not rotate evenly but that they slip during rotation. This Cone slippage, as it is called, allows a rock bit to drill using a scraping action, as well as the normal grinding or crushing action.

 

Cone slippage can be designed into the bit in two ways. Since cones have two profiles: the inner and the outer cone profile, a cone removed from the bit and placed on a horizontal surface can take up two positions . It may either roll about the heel cone or the nose cone. When the cone is mounted on a journal it is forced to rotate around the centre of the bit. This “unnatural” turning motion forces the inner cone to scrape and the outer cone to gouge. Gouging and scraping help to break up the rock in a soft formation but are not so effective in harder formations, where teeth wear is excessive.

 

Cone slippage can also be attained by offsetting the axes of the cones. This is often used in soft formation bits . To achieve an offset the journals must be angled slightly away from the centre. Hard formation bits have little or no offset to minimise slippage and rely on grinding and crushing action alone.

 

Contact Details
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Tel: +8613693012264

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