Rock Drilling Tool 12 1/4 Inch PDC Diamond Drilling Reamer Bit

• Customization: Available
• Customized: Customized
• Standard: API
• Model NO.: PDC Bit
• Length: Stub-length
• Type: Center Drill Bit
• Material: Diamond
• Usage: Well Drilling
• Name: PDC Bit or PDC Drill Bit or Rock Bit
• Model: Rock Bit or Drill Bit
• Application: Oil or Water or Mining Drilling Well
• Bit Body Type: Steel Body or Matrix Body
• Transport Package: Wooden Box
• Specification: TCI
• Trademark: EGT
• Origin: China
• HS Code: 8207191000
• Production Capacity: 5000 PCS
• Package Size: 400.00cm * 400.00cm * 800.00cm
• Package Gross Weight: 120.000kg

Product Description

  

1. Product Overview

The PDC Hole Reamer (Polycrystalline Diamond Compact Reamer) is a high-efficiency tool for oil and gas drilling, horizontal directional drilling (HDD), and borehole enlargement. Key functions include:

• Enlarging wellbore diameters in soft to medium-hard formations to optimize wellbore stability4.
• Minimizing surface disruption in trenchless drilling applications, particularly in complex geological conditions5.
• Utilizing PDC cutters for enhanced wear resistance, cutting efficiency, and tool longevity

2. Structural Design
Critical design features include:
 

• Materials & Manufacturing:
  • Main body forged from AISI 4145H alloy steel for high strength and fatigue resistance4.
  • Spiral blades or wings to reduce torque fluctuations and improve stability during reaming
  •  
• Functional Components:
  • Tapered/straight-body design for centralized alignment and symmetrical hole enlargement
  • Replaceable nozzles to maintain cutter cleanliness and prevent cuttings accumulation
  • Multi-wing configurations for efficient rock fragmentation in hard formations

3. Application Scenarios

• Formation Adaptability:
  • Soft formations (clay, loose shale): Spiral blades facilitate rapid cuttings removal, minimizing balling risks47.
  • Medium-hard formations (dense shale, limestone): PDC cutters combined with high-pressure jets ensure effective rock breaking47.
• Operational Modes:
  • Inline connection with drill bits for simultaneous drilling and reaming4.
  • Configurable for pull reaming (post-drilling) or push reaming (during drilling)

4. Technical Parameters

Parameter	Typical Value/Range	Source
Outer Diameter	16-17.5 inches (406-445 mm)	57
Cutter Size	13-16 mm PDC cutters	47
Connection Thread	API standards (e.g., NC50)	5
Nozzle Flow Area	12 cm² (optimal efficiency)	7

 

5. Operational Guidelines

• Matching Requirements:
  • Select blade count and cutter density based on hole size, formation hardness, and drilling fluid properties
  • Prioritize high-pressure jet nozzles in sticky formations to prevent cutter fouling
• Maintenance:
  • Regularly inspect PDC cutters for wear to avoid reaming deviations
  • Clean internal flow channels post-operation to prevent clogging

6. Typical Models

• S423 Series 5-Wing Reamer: Designed for HDD hard-rock formations, supports 17.5-inch hole enlargement with self-cleaning flow channels.
• Spiral Blade Reamer: Ideal for soft-to-medium formations, compatible with push/pull reaming modes.

 

 

 

 F.A.Q
 

Q: Are your company trading company or manufacture factory :
A: We are profession manufacture with over +20 experience
 
Q: Accepted  Payment Terms:
A: T/T, L/C,  Paypal, Western Union, etc.
 
Q: Guarantee and Warranty of Quality:
A: We are API&ISO certified factory, we have one integral set of system to control quality in production and make after-sale service.
 
Q: Referenced Letters:
A: We have many Referenced Letter issued by our customers from many countries for checking our quality and service.
 
Q: Can I visit your factory online?
A: Yes, we can show our workshop, warehouse, offices online by WeChat , Whatsapp or Skype