4-Blade Spiral PDC Reamer

4145H Steel Body 4-Blade Spiral PDC Reamer for Stable Hole Enlargement

Product Overview & Description

The 4-Blade Spiral PDC Reamer from CZDRILL is a hole enlargement tool designed for reaming pilot holes to the required final borehole diameter. It is suitable for horizontal directional drilling (HDD), water well drilling, pile foundation work, and selected engineering drilling applications.

Built with a high-strength 4145H steel body, four spiral blades, and premium PDC cutting elements, the 4-Blade Spiral PDC Reamer provides increased cutter coverage and a balanced reaming structure. The spiral blade design helps guide cuttings movement during reaming, while the reamer diameter, pilot connection, rear connection, and cutter layout can be customized according to project requirements.

Key Features & Advantages

• Four Spiral Blade Structure: The four-blade layout provides increased cutter coverage and a balanced cutting structure for hole enlargement.
• 4145H Steel Body: The high-strength steel body provides a durable platform for the reaming structure and PDC cutters.
• Premium PDC Cutters: PDC cutting elements provide continuous shearing action in suitable drilling formations.
• Spiral Cutting Layout: The spiral blades are designed to support cuttings movement during the reaming process.
• Custom Diameter Options: Reamer diameter can be produced according to the required final borehole size.
• Flexible Connection Options: Pilot and back connections can be matched to the customer’s drill string and rig system.

Applicable Formations & Applications

The 4-Blade Spiral PDC Reamer can be configured for selected soft to medium-hard formations. Final reamer selection should be based on pilot-hole diameter, target hole diameter, formation hardness, abrasiveness, drilling fluid, pullback force, torque capacity, and drilling method.

• Suitable Formations: Clay, loess, silt, mudstone, shale, soft to medium sandstone, weathered rock, and selected alternating strata.
• Horizontal Directional Drilling: Used for pilot-hole enlargement in HDD pipeline and utility installation projects.
• Water Well Drilling: Suitable for selected water well borehole enlargement applications.
• Foundation Drilling: Used for selected pile foundation and construction drilling projects.
• Engineering Drilling: Applicable to borehole enlargement for general engineering and geotechnical work.

Technical Specifications

Technical Parameter	Specification / Option
Product Name	4-Blade Spiral PDC Reamer
Product Type	Spiral Blade PDC Hole Reamer
Body Material	4145H Steel Body
Blade Quantity	4 Spiral Blades
Cutting Elements	Premium PDC Cutters
Reaming Function	Pilot Hole Enlargement
Reamer Diameter	Customizable according to required final hole size
Connection Type	Pilot and back connections configurable
Applications	HDD, water wells, foundations, and engineering drilling

4-Blade Spiral PDC Reamer vs. 3-Blade Spiral PDC Reamer

Feature	CZDRILL 4-Blade Spiral PDC Reamer	3-Blade Spiral PDC Reamer
Blade Quantity	Four spiral blades	Three spiral blades
Cutter Coverage	Higher cutter coverage across the reaming surface	Wider spacing between cutting blades
Cutting Stability	Designed for stable reaming in suitable conditions	Designed for efficient cutting clearance
Cuttings Movement	Spiral layout designed to assist cuttings movement	Spiral layout designed to assist cuttings movement
Customization	Diameter, connections, and cutter layout configurable	Diameter, connections, and cutter layout configurable

Industry Standard Reference

CZDRILL can match the reamer connection to your drill string and HDD or drilling system. For relevant drilling-industry connection requirements, please refer to applicable API standards before ordering.

Related Products

Explore more borehole enlargement tools in our PDC Hole Reamers category, including fixed plate and pilot-guided PDC reamers.

Frequently Asked Questions

Q1: What is a 4-blade spiral PDC reamer?

A: A 4-blade spiral PDC reamer is a hole enlargement tool used after a pilot hole has been drilled. It uses four spiral blades with PDC cutters to enlarge the borehole to the required final diameter.

Q2: Why choose four blades?

A: A four-blade structure provides increased cutter coverage and a balanced cutting layout. The appropriate blade quantity should be selected according to formation conditions, hole size, and drilling parameters.

Q3: Can the reamer diameter and connection be customized?

A: Yes. CZDRILL can customize the reamer diameter, pilot connection, rear connection, cutter layout, and blade configuration according to your drilling project.

Q4: What information is needed for a quotation?

A: Please provide the pilot-hole diameter, target hole diameter, formation details, drilling rig type, connection requirements, and application. CZDRILL will recommend a suitable reamer configuration.

Request a PDC Reamer Quotation

Contact CZDRILL for a 4-Blade Spiral PDC Reamer quotation. Send your pilot-hole size, target diameter, formation details, connection type, and drilling application for a suitable technical recommendation.