PDC Drill Bit 3 Wings 215mm with API 3 1/2 Reg Pin Geological Exploration

• Customization: Available
• Customized: Customized
• Standard: DIN, JIS, AISI, API
• Model NO.: 215mm 8.5 inches PDC
• Length: Taper-length
• Type: Core Drill Bit
• Material: Diamond
• Usage: Well Drilling, PCB Drilling, Metal Drilling, Masonry Drilling
• Warranty: 1 Year
• Weight: 90kgs
• Video Outgoing-Inspection: Provided
• Machinery Test Report: Provided
• Condition: Brand New
• Bearing Type: Sealed Journal Bearing Bit
• Gauge Protection: Available
• Body Material: Steel Body
• Extra Gage Protection: Available
• Cutter Size: 13/16/19mm
• MOQ: 1 PC
• Certification: API & ISO
• Processing Type: Forging
• Advantage: Wear Resistant, High Performance
• Application: Oil/Gas/Geothermal/Mining/Geological Survey, HDD...
• Transport Package: Plywood Case
• Specification: 55*25*25cm
• Trademark: Far Eastern Drilling
• Origin: China
• HS Code: 84314300
• Production Capacity: 100, 000PCS/Year

Product Description

Far Eastern Drilling are API (API-7-1 & API Spec Q1) factory specializes in drill bits, such as PDC Bit,Tricone bit,Hybrid Bit,HDD Hole Opener,Foundation Roller Cone Bits and related drilling tools,application fields includes for oil well drilling, gas well drilling, geothermal well drilling, mining, geological survey, hydrographic survey, water well drilling, HDD pipelines installation projects, foundation rock piling projects. 

 3-wing PDC drill bit with a diameter of 215mm (approximately 8.5 inches) and an API 3 1/2 Reg Pin connection offers specific advantages for geological exploration, tailored to its design, size, and connection type. 

The 3-wing (or 3-blade) configuration distributes cutting forces evenly across the bit, reducing torque fluctuations and minimizing the risk of bit whirl or uneven wear. This stability is critical for maintaining a straight borehole trajectory in layered or heterogeneous sediments (common in geological surveys).

The wide spacing between wings creates large flow channels for drilling fluid, enhancing cuttings evacuation. This is vital in soft to medium-hard formations (e.g., clay, sandstone, shale) where rapid removal of cuttings prevents borehole collapse or stuck pipe.

The symmetrical design produces a consistent borehole diameter, which is essential for collecting intact core samples and ensuring accurate logging (e.g., resistivity or gamma ray measurements).

 

PDC Cutters • Hardness and Precision: The polycrystalline diamond compacts (PDC cutters) shear rock efficiently, preserving core integrity in sedimentary basins. Unlike tricone bits (which crush rock), PDC cutters leave minimal fracturing around the core, ideal for geological analysis (e.g., stratigraphic dating or mineral composition studies). • Low Abrasion in Non-Hard Formations: In typical geological exploration targets (e.g., unconsolidated sediments, coal seams, or weak metamorphic rocks), PDC cutters resist wear better than milled-tooth tricone bits, extending bit life during long coring runs. 

 

Specifications of PDC Bit
Model:   5-26 5 7/8,6,6 1/2,8 1/2,9 1/2,9 5/8, 9 7/8, 12 1/4 ,etc
Rock Sample	Formations Description	Compressive Strength PSI	IADC Type
Clay, Salt stone,Sandstone	Very soft: Soft formation with low sticky layers and low compressive                    strength	<4000	M/S112~M/S223
Claystone ,Marl,Lignite, Sandstone	Soft: Soft formation with low compressive strength and good drillability	<8000	M/S222~M/S333
Claystone,Marl,Lignite Sandstone,Anhydrite,Tuff	Medium Soft: Soft formation with low compressive sth interbedded with hard layers	<12000	M/S323~M/S433
Mudstone,Limestone, Anhydrite,Calcareous,  Sandstone,Shale	Medium: Medium hard to hard formation with high compressive strength and thin abrasive layers	<16000	M333~M443
Limestone,Anhydrite, Dolomite	Medium hard: Hard and compact formation with very high compressive strength but no abrasive layers	<24000	M432~M444
Calcareous shale, Siliceous,Sandstone Siltstone	Hard :Hard and compact formation with very high compressive strength but no abrasive layers	<32000	M611-M734
Quartzite,Lgneous rock	Very hard: Extremely hard and abrasive formation	>3200	M711-M844

 

Steel Body	Sutable for soft to medium hard chunks of homogeneous formation and hard and abrasive high formation.
Matrix Body	Suitable for more harder information.
13X8mm	The smallest cutter and more blades suitable  for  the  hardest rock information , then the biggest cutter gets the fastest speed .
13X19mm
16X13mm
19X13mm

 

Bit Size		Pinconnection	Make-up Torque
INCH		INCH	Kft.lbs	KN.m
3 3/4- 4 1/2		2 3/8 REG	1.8-3.1	2.4-3.7
4 17/82-5		2 7/8 REG	3.2-4.8	4.2-6.9
5 1/32-7 3/8		3 1/2 REG	5.2-8.0	7.1-11.5
7 13/32-9 3/8		4 1/2 REG	12.6-18.2	17.0-26.4
9 18/82-14 1/2		6 5/8 REG	37.7-39.1	50.3-57.5
14 9/16-18 1/2		7 5/8 REG	48.3-60.9	65.5-86.1

 

FAQ
1. How to get an exact quotation?
Answer: Please send us detailed information as below:
-Tricone bits(Diameter, IADC code)
-PDC bits(Matrix or Steel body, blades quantity, cutter size, etc)
-Hole opener(Diameter, size of pilot hole, hardness of rocks, thread connection of your drill pipe, etc.)
-Roller cutters(Diameter of cones, model number, etc.)
-Core barrel(Diameter, quantity of cutters, connection, etc.)
A simple way is sending us photos .
Besides above, if possible please provide more information as below:
Drilling depth in vertical well drilling, Drilling length in HDD, hardness of rocks, Capacity of drill rigs, application(oil/gas well drilling, or water well drilling, or HDD, or foundation).
Incoterm: FOB or CIF or CFR, by plane or ship, port of destination/discharge.
The more information provided, the more exact quotation will be offered.
2. What is the quality control for your products?
Answer: All of our production are in lines of API rules and ISO9001:2015 strictly, from signing contract , to raw materials, to each production processes, to product finish, to after-sale service, each processes and sections are in accordant with standard.
3. About lead time,payment terms, delivery ?
Answer: We always have regular models available in stock, prompt delivery is one of our advantages. Mass production depends on quantity of order.
We accept all regular payment terms including L/C, T/T, etc.
We are near from Beijing airport and Tianjin(Xingang) seaport, transportation from our factory to Beijing or Tianjin only takes one day, fast and very economical inland charges.
4. What is the history of Far Eastern ?
Answer: The drilling bits business was started at year 2003 only for China domestic requirement, the name Far Eastern  was started from year 2009, now Far Eastern has exported to more than 35 countries and areas.
5. Do you have Referenced Letters /Recommendation Letters from old customers?
Answer: Yes, we have many referenced letters/recommendation letters issued by old customers who would like to share our stories.