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12 1/4 Inch TCI Tricone Drill Bit Water Well , Geothermal Hole Drilling

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China ROSCHEN GROUP certification
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12 1/4 Inch TCI Tricone Drill Bit Water Well , Geothermal Hole Drilling

12 1/4 Inch TCI Tricone Drill Bit Water Well , Geothermal Hole Drilling
12 1/4 Inch TCI Tricone Drill Bit Water Well , Geothermal Hole Drilling 12 1/4 Inch TCI Tricone Drill Bit Water Well , Geothermal Hole Drilling 12 1/4 Inch TCI Tricone Drill Bit Water Well , Geothermal Hole Drilling 12 1/4 Inch TCI Tricone Drill Bit Water Well , Geothermal Hole Drilling

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Product Details:

Place of Origin: China
Brand Name: ROSCHEN
Certification: ISO,CE
Model Number: 2'~12'

Payment & Shipping Terms:

Minimum Order Quantity: 1~5 piece
Price: Negotiate
Packaging Details: Carton
Supply Ability: 800 pieces
Detailed Product Description
Sale: China Bit Sale Supplier: China Rock Bit Supplier
Name: Tricone Drill Bit Bit: Bits Germany
Type: Tricone Drill Bit Wiki Item No: China Drill Bits Sets
Origin: China Tricone Drill Bit Item: Tci Tricone Bit
Cone Bit: Roller Cone Bit
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12 1/4 inch TCI tricone bit, tricone bit, drill bit water well, geothermal hole drilling 



1.  Horizontal well drilling technology is improved continuously, in which extended reach well drilling technology and multilateral well drilling technology have been developed rapidly. 

2.  Our factory follows improvement of drilling technology tightly, and has developed new type of TD high speed motor bit suitable for directional well and horizontal well successfully.

3.  Work of bit in directional well and horizontal well has been changed greatly compare with which in straight well, new type of TD high speed motor bit has the advantages of applying for high rotary speed, strong gage protection ability and stability, high reliability, well hydraulic effect and long service life.

4. Others specify 
Working condition of the bit in directional and horizontal drilling applications is quite different than in vertical well drilling .our factory’s new TD series motor bit features high RPM, Better gage protection and stability ,higher reliability, excellent hydraulic effect and longer working life etc.TD bit is suitable for drilling at 90~300 RPM and is the ideal choice for directional ,horizontal and horizontal multilateral well drilling applications.


The size range of TD series bit is from 7 7/8 to 12 1/4 inch ,and IADC varies from 117 to 647. for example:8 1/2TD517X.  



Tricone bit IADC code and tricone parameters , please refer:


First Digit  
1 STEEL TOOTH BITS for Soft Formation
Bits that feature long, widely spaced teeth, to drill soft formation such as shales, soft sandstone, clay and all unconsolidated formations.
IADC CODES 111 - 126 - 134
2 STEEL TOOTH BITS for Medium Formation
With medium length teeth, closer spaces, to drill unconsolidated limestones, medium sandstones, clay, marls.
IADC CODES 211 - 224 - 234
3 STEEL TOOTH BITS for Hard Formation
With short, closely spaced teeth with tungsten carbide hardfacing, for hard and abrasive formations such as sandstones, dolomite, hard limestone and granite.
IADC CODES 311 - 314 - 321
4 TCI BITS for Soft - Medium Soft formations
5 Features large chisel-shaped tungsten carbide inserts to provide the highest penetration rates in the softest formations such as shales, clays, limestone and sands.
  IADC CODES 437 - 517 - 527
6 TCI BITS for Medium Hard - Hard formations
Effective in a variety of formations with higher compressive strength such as hard limestone, sandstone, dolomite and other formations with high abrasive quality, hard streaks and broken formations.
IADC CODES 617 - 627 - 637
7 TCI BITS for Hard and abrasive formations
8 With hemispherical tungsten carbide inserts. To optimize penetration rate in hard and abrasive formations such as granites, basalts, quartzite and chert. Drilling weight of 3 ± 4 tons per inch of diameter should be applied.
  IADC CODES 732 - 737 - 837
Second Digit FORMATION
1 1, 2, 3 and 4 are further breakdown of formation with 1 being the softest and 4 the hardest.
1 Standard open bearing roller bit
2 Standard open bearing roller bit, air-cooled
3 Standard open bearing roller bit with gauge protection which is defined as carbide inserts in the heel of the cone
4 Sealed roller bearing bit
5 Sealed roller bearing bit with gauge protection
6 Journal sealed bearing bit
7 Journal sealed bearing bit with gauge protection


12 1/4 Inch TCI Tricone Drill Bit Water Well , Geothermal Hole Drilling 0


A Air Application
R Reinforced Welds
C Center Jet
S Standard Steel Tooth
D Deviation Control
X Chisel Insert
E Extended Jet
Y Conical Insert
G Extra Gage Protection
Z Other Insert Shape
J Jet Deflection



2 1/2" to 2 3/4" inclusive A - AW Rod
2 7/8" to 3 3/8" inclusive N4 Rod
3 1/2" to 4 1/2" inclusive 2 3/8" API
4 5/8" to 5" inclusive 2 7/8" API
5 1/8" to 7 3/8" inclusive 3 1/2" API
7 1/2" to 9 3/8" inclusive 4 1/2" API
9 1/2" to 14 3/8" inclusive 6 5/8" API
14 1/2" to 18 1/2" inclusive 6 5/8" API or 7 5/8" API
18 5/8" to 26" inclusive 7 5/8" API or 8 5/8" API
27" and larger 8 5/8" API
*Tricone bits are available with alternative connection sizes on request.



Q1. Whether accept customized according to customers' requirements ?

A: Yes, We accept customized, no matter how much is the purchase quantity

Q2. Can I expect a quality products?

A: Yes. All our activities are accredited to ISO 9001:2008 and API, both in products and services, at the same time, mature production technology ensuring the quality satisfy international request.

Q3. About lead time and shipping time?

A: The lead time depend on quantity of order. Usually shipped by sea, small order or urgent order we can send you by air after received your agreement.
According the distance from china to your port, usually from China to European about 25 days. To West of American 20 days.

Q4. What is your trade terms?

A: We offer EXW, FOB, CFR, CIF, DDU.

Q5. What is your payment terms and method?

A: Our payment terms: normally 30% deposit, balance 70% before shipment.

Our payment method, we accept T/T, L/C.


For more information please contact:





WeChat: +86-137 6419 5009 ; +86-135 8585 5390


WhatsApp: +86-137 6419 5009 ; +86-135 8585 5390


Email: roschen@roschen.com ; roschen@roschen.net


Website: http://www.roschen.net ; http://www.roschen.cn

http://www.roschen.com ; http://www.roschengroup.com




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Contact Person: Mr. PHIGER

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