8-1/2 Inch PDC Drill Bit Steel Body IADC S323 For Oil Gas Drilling

PDC Drill Bit 8-1/2 inch S323 Diamond Drilling Tool

1 . Descriptions:

The 8-1/2 Inch PDC Drill Bit (Steel Body, IADC S323) is engineered for high-efficiency drilling in medium-hard to hard formations with moderate abrasive characteristics. Its steel body construction offers superior resistance to impact and fatigue, making it ideal for oil and gas drilling operations, including vertical, directional, and horizontal wells. This bit is specifically designed to deliver faster penetration rates and extended downhole life, reducing overall drilling costs. Target customers include drilling contractors, oilfield service companies, and E&P operators seeking reliable, cost-effective PDC technology for challenging downhole environments.

2. Specification:

3. Applications

• Oil & gas well drilling (onshore & offshore)

• Medium-hard to hard formations (e.g., sandstone, limestone, shale)

• Directional & horizontal drilling

• Deviated well sections with moderate abrasive layers

• Deep well drilling with high impact loads

4. Product Introduction

PDC Bit profile 

Profile shape is one of the most important characteristics of fixed-cutter bits, having direct influence on possibilities for cutter placement and densities and on hydraulic layouts. Profile also affects: Bit stability

Drill Bit PDC Cutters

Polycrystalline Diamond Composite (PDC) cutters are the main point of contact for a drill bit. PDC bits remove the rock mainly by shearing.

The PDC cutters are exposed to a lot of heating and cooling down the well, a very challenging environment.

PDC cutters that have lower thermal degradation and more thermal stability generally achieve higher ROP and increased wear resistance. So, optimizing the cutter is important.

Drill Bit Nozzles

PDC Drill bit nozzles help clear the cutting area and cool the Polycrystalline Diamond Composite (PDC) cutters.

Effective placement of these nozzles along with the angle they are set at plays a critical role on how efficient the drill bit performs.

Fluid channels also complement nozzle placement to improve the clearing of cuttings.

Steel Body PDC Bits

Steel body of PDC Drill Bit  is the opposite of matrix body. It can of withstanding high impact loads, but is softer and lacks protective features. The strength and ductility of steel give steel-bit bodies high impact resistance.

Steel bodies are considerably stronger than matrix bodies.

A beneficial feature of steel bits is that they can easily be rebuilt a number of times because worn or damaged cutters can be replaced rather easily. This is a particular advantage for operators in low-cost drilling environments.

Polycrystalline diamond compact (PDC) drill bits are different than roller cones drill Bit ; Becuase  they are one piece bodies with no moving parts. The fixed-cutters shred the rock, so the bit is able to operate with higher rotation speeds more efficiently in consolidated formations.

5. Why Choose Us

• Factory Background: Over 20 years of experience in PDC bit design and manufacturing, with an annual output of more than 2,000 drill bits.

• OEM/ODM Capabilities: Full customization available for bit profile, cutter layout, nozzle configuration, and connection types.

• International Standards: Products are designed and tested in accordance with API Spec 7-1 and ISO 9001:2015 quality management systems.

• Quality Control: 100% inspection of cutter attachment, body integrity, and pressure testing before shipment.

• Technical Support: Engineering team available for bit selection, hydraulic optimization, and post-run analysis.

6. FAQ

Q1: What formations is this IADC S323 steel body PDC bit suitable for?
A: It is optimized for medium-hard to hard formations with moderate abrasiveness, such as dense shale, limestone, and sandstone. The S323 IADC code indicates a steel-body bit designed for high impact resistance in harder rocks.

Q2: Can I use this bit with a rotary steerable system (RSS)?
A: Yes, the 8-1/2" steel body design is compatible with most RSS and mud motor assemblies. Please provide your bottom hole assembly (BHA) details for confirmation.

Q3: What is the lead time for OEM/ODM orders?
A: Standard bit: 10–15 days. OEM (custom cutter layout, gauge protection, or branding): 30–40 days, depending on specifications.

Q4: How do you ensure the cutter attachment quality?
A: All cutters are brazed under controlled temperature and inspected via ultrasonic testing. We also conduct pull-off tests per batch to verify attachment strength meets API standards.

Q5: What is the recommended make-up torque for 4-1/2" REG connection?
A: Recommended make-up torque is 16–22 KN·m. Please follow your specific BHA torque guidelines and use proper thread compound.

Q6: Do you provide after-sales failure analysis?
A: Yes. We offer free post-run dull grading and failure analysis reports. This helps optimize bit selection and drilling parameters for your next run.