Five-Blade Curved PDC Drill Bit - Drilling Bits - Chenghu...

Five-Blade Curved PDC Drill Bit

Size: 6″–12-1/4″
Diameter: 152–311 mm
Structure: Five-Blade Curved Profile
PDC Cutters: 1613 / 1308 / 1005
Body: Steel Body
Connection: 89 / 3-1/2 / 4-1/2 / Custom
Customization: Cutter Layout / Connection / Bit Size

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Description

Product Snapshot

Five-Blade PDC Oilfield Drill Bit

Five-Blade PDC Oilfield Drill Bit features a robust steel-body construction and curved five-blade cutting profile for stable drilling and efficient formation cutting. The five-blade curved cutting structure distributes drilling loads across multiple blades, helping improve bit stability and cutter engagement during operation.

Multiple PDC cutter sizes, including 1613, 1308 and 1005, can be combined according to bit diameter and drilling requirements. Standard sizes range from 6 inch to 12-1/4 inch, with customized thread connections available.

Size 6″–12-1/4″	Diameter 152–311 mm	Structure Five-Blade Curved Profile
PDC Cutters 1613 / 1308 / 1005	Body Steel Body	Connection 89 / 3-1/2 / 4-1/2 / Custom

Customization

Cutter Layout / Connection / Bit Size

Key Features

Built for stable rotary drilling

Six design advantages behind the Five-Blade PDC Oilfield Drill Bit.

01 / 06

Five-Blade Cutting Structure

Five blades provide multiple cutting contact points for balanced drilling and stable load distribution.

02 / 06

Curved Blade Profile

The curved blade geometry helps maintain smooth cutter engagement and efficient formation removal.

03 / 06

Heavy-Duty Steel Body

Robust steel-body construction provides high structural strength for demanding rotary drilling applications.

04 / 06

Multiple PDC Cutter Sizes

1613, 1308 and 1005 PDC cutters can be combined according to drilling requirements.

05 / 06

Large Diameter Range

Available from 152 mm to 311 mm, covering common oilfield sizes from 6 inch to 12-1/4 inch.

06 / 06

Customized Connections

Different thread connections and bit structures can be manufactured according to drilling equipment.

Applications & Formation Selection

Designed for oilfield rotary drilling

This five-blade PDC drill bit is designed for oilfield rotary drilling, petroleum drilling, oil and gas well drilling, large-diameter rotary drilling and customized drilling projects. Final bit configuration should be selected according to formation characteristics, drilling parameters and rig requirements.

01 Oilfield Rotary Drilling Stable cutting and load distribution for oilfield rotary drilling operations.	02 Oil & Gas Well Drilling Designed for petroleum and oil and gas well drilling projects.
03 Large-Diameter Rotary Drilling Suitable for large-diameter rotary drilling projects up to 12-1/4 inch.	04 Customized Drilling Projects Cutter layout, connection and bit size can be adapted to specific project needs.

Formation Selection

The suitable formation range depends on the following factors. Different cutter configurations can be selected according to actual formation conditions.

PDC Cutter Grade	Cutter Size	Cutter Exposure	Blade Geometry
Formation Hardness	Formation Abrasiveness	Drilling Parameters	Rig Requirements

⚠️ Note: Final bit configuration should be selected according to formation characteristics, drilling parameters and rig requirements. Please contact our engineers for formation-specific recommendations.

Multi-Size PDC Cutter Configuration

Three PDC cutter sizes working together

A key feature of this bit is the combination of different PDC cutter sizes — 1613, 1308 and 1005 — working together across the five-blade structure.

1613 Cutters Primary Cutting Elements Used as major cutting elements on the primary blade structure.	1308 Cutters Secondary Cutting & Support Used as secondary cutting and support elements according to blade layout.	1005 Cutters Auxiliary & Protective Used in auxiliary cutting and protective positions depending on bit design.
Customized Layout Customized Cutter Layout Cutter quantity, size, position and grade can be adjusted according to bit diameter and drilling conditions.

Technical Specifications

Standard sizes and PDC cutter configurations

Standard sizes from 6 inch to 12-1/4 inch. Customized bit sizes, cutter layouts and connections are available on request.

Nominal Size	Diameter	Connection Options	PDC Cutter Configuration
6 in	152 mm	89 / 3-1/2 / 4-1/2 / Custom	20 PCS / 1613 + 26 PCS / 1308 + 25 PCS / 1005
6-1/2 in	165 mm	89 / 3-1/2 / 4-1/2 / Custom	18 PCS / 1613 + 29 PCS / 1308 + 25 PCS / 1005
7-1/2 in	190 mm	89 / 3-1/2 / 4-1/2 / Custom	26 PCS / 1613 + 27 PCS / 1308 + 25 PCS / 1005
8-1/2 in	216 mm	89 / 3-1/2 / 4-1/2 / Custom	23 PCS / 1613 + 33 PCS / 1308 + 25 PCS / 1005
9-1/2 in	241 mm	89 / 3-1/2 / 4-1/2 / Custom	31 PCS / 1613 + 31 PCS / 1308 + 25 PCS / 1005
10-5/8 in	269 mm	89 / 3-1/2 / 4-1/2 / Custom	37 PCS / 1613 + 31 PCS / 1308 + 25 PCS / 1005
12-1/4 in	311 mm	89 / 3-1/2 / 4-1/2 / Custom	44 PCS / 1613 + 34 PCS / 1308 + 25 PCS / 1005

Available Configuration Grades

H2 Grade

Standard Heavy-Duty

Standard heavy-duty configuration for general project requirements.

H3 Grade

Enhanced Configuration

Enhanced configuration for projects requiring upgraded cutter and structural performance.

Available Sizes

Standard inch sizes with millimeter equivalents

Standard inch sizes are listed for oilfield drilling customers. Customized diameters are available on request.

6 in 152 mm	6-1/2 in 165 mm	7-1/2 in 190 mm	8-1/2 in 216 mm
9-1/2 in 241 mm	10-5/8 in 269 mm	12-1/4 in 311 mm	Custom On Request

How to Select

How to select the right five-blade PDC drill bit

To recommend a suitable configuration, please provide the following information. Our engineers will respond with a factory quotation within 24 hours.

01 Required Bit Size 6 / 6-1/2 / 7-1/2 / 8-1/2 / 9-1/2 / 10-5/8 / 12-1/4 inch	02 Rock Formation Please provide formation type, hardness and abrasiveness.	03 Drilling Application Oilfield / petroleum / rotary drilling
04 Connection Requirement 89 / 3-1/2 / 4-1/2 or customized	05 Drilling Rig Information Please provide rig model and drilling parameters for configuration matching.	06 Cutter Grade or Existing Bit Spec Required cutter grade or existing bit specification.

Factory Customization

Customized five-blade PDC drill bit solutions

Every oilfield drilling project is different. Chenghui Drilling customizes each bit based on your project data — from blade geometry to thread connection.

Formation type, drilling rig, drilling parameters and required penetration rate all affect drill bit performance. Our engineering team works with your technical data to recommend the most suitable PDC cutter configuration and blade structure.

— Bit Diameter	— Blade Geometry
— PDC Cutter Size	— Cutter Quantity
— Cutter Arrangement	— Cutter Grade
— Gauge Structure	— Thread Connection
— Steel Body Design	— OEM Marking & Packaging

CNC machining of five-blade PDC oilfield drill bit

Five-blade PDC oilfield drill bit welding and assembly process

About Chenghui Drilling

Professional drilling tools manufacturer in China

Chenghui Drilling Co., Ltd. specializes in the design, production and supply of PDC drill bits, tricone drill bits, DTH drilling tools and related drilling equipment for customers worldwide.

Every drill bit is manufactured and inspected in our own factory, ensuring stable quality, competitive pricing and reliable delivery for international drilling contractors and distributors.

Supply Mode Factory Direct	Производство In-House
Service OEM / ODM	Market Global Export

Chenghui Drilling Tools production workshop

Get In Touch

Need a customized Five-Blade PDC Oilfield Drill Bit?

Share your drilling requirements with our engineers. We will recommend a suitable PDC cutter configuration and blade structure, and provide a factory quotation within 24 hours.

1. Required Bit Size	2. Rock Formation
3. Drilling Application	4. Connection Requirement

📩 Request Quote
Contact Engineer

FAQ

1
What is a Five-Blade PDC Drill Bit?
+

A Five-Blade PDC Drill Bit is a steel-body rotary drilling bit designed with five curved blades and multiple PDC cutters. The structure helps improve cutting stability, load distribution and drilling performance in oilfield and other rotary drilling applications.

2
What sizes are available?
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Standard sizes include 6", 6-1/2", 7-1/2", 8-1/2", 9-1/2", 10-5/8" and 12-1/4", corresponding to approximately 152–311 mm.

3
What PDC cutter sizes are used?
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Depending on the bit size and configuration, the bit can use a combination of 1613, 1308 and 1005 PDC cutters. Cutter quantity and layout can be customized according to drilling requirements.

4
What thread connections are available?
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Common connection options include 89, 3-1/2 and 4-1/2, with customized thread connections available according to the drilling rig, drill string or project requirements.

5
Can you customize the Five-Blade PDC Drill Bit?
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Yes. We can customize bit diameter, blade geometry, PDC cutter size, cutter quantity, cutter arrangement, cutter grade, gauge structure, thread connection, steel body design, marking and packaging according to your drilling conditions.

Downloads

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Five-Blade Curved PDC Drill Bit