Case Study: 130 PDC Drill Bits Delivered to Major Distributor in Minas Gerais, Brazil – High‑Density Sandstone Drilling Performance (September 6, 2025)

On September 6, 2025, we supplied 130 pieces of four‑wing arc‑angle 1613 PDC drill bits to a major regional distributor in Minas Gerais, Brazil.

The drill bits were deployed in high‑density sandstone formations containing quartz, a challenging geological environment known for rapid cutter wear and low penetration rates. This case demonstrates not only drilling performance stability, but also how technical alignment with a professional distributor leads to long‑term market cooperation.

Drilling site in Minas Gerais – high‑density sandstone formation

Why This Project Matters

Minas Gerais is one of Brazil’s most important regions for mining and geological operations. Formations in this area often include:

• High‑density compact sandstone
• Quartz‑rich abrasive layers
• Strong compressive resistance
• High cutter impact stress

Many drilling contractors in this region face rapid PDC cutter chipping and edge damage due to quartz content. This is exactly where this project began.

Initial Communication: A Technically Experienced Buyer

Unlike small buyers focused mainly on price, this distributor approached us with highly specific questions:

• What is the impact resistance level of 1613 cutters?
• How does arc‑angle wing design reduce vibration?
• How is cutter exposure optimized for quartz‑rich sandstone?
• Can batch consistency be guaranteed across four different sizes?

Their biggest concern was not penetration speed alone. It was cutter durability in quartz‑bearing formations.

For a regional distributor, product stability directly affects market trust.

Technical Matching: Why 1613 Petroleum‑Grade PDC Cutters After analyzing formation data, we recommended: 1613 petroleum‑grade PDC composite cutters Four‑wing arc‑angle structure Balanced cutter distribution Reinforced gauge protection Why 1613? Because this cutter specification offers: Strong wear resistance Enhanced impact tolerance Stable cutting edge retention Suitable performance in abrasive sandstone with quartz The arc‑angle wing design helps: Reduce torque fluctuation Improve load distribution Stabilize drilling trajectory

1613 PDC drill bit with four‑wing arc‑angle design

Order Confirmation: Multi‑Size Batch Stability

The order included four sizes: 113mm, 133mm, 153mm, 171mm – total 130 PCS.

Before confirming the order, the distributor requested:

• Manufacturing tolerance details
• Cutter welding quality explanation
• Inspection process overview
• Packaging reinforcement for international transport

We provided:

• Batch inspection reports
• Cutter brazing procedure explanation
• Structural design diagrams
• Production timeline transparency

After internal evaluation, the distributor finalized the order.

Field Performance in High‑Density Sandstone

Once deployed on‑site in Minas Gerais, the bits entered high‑density sandstone layers containing quartz inclusions.

Reported drilling data:

• Penetration rate: approximately 0.7 meters per hour
• Stable torque response
• Smooth drilling progression
• No abnormal vibration

Most importantly: “The formation density is extremely high, but currently the bits show no visible wear.”

In quartz‑bearing sandstone, early cutter damage is common. The absence of abnormal wear indicates:

• Effective cutter quality
• Proper structural balance
• Adequate impact resistance

For high‑density formations, stability is more important than aggressive speed.

Real Feedback from the Distributor

The distributor summarized their satisfaction in three areas:

1. Cutter Durability: Quartz‑rich formations did not cause early chipping or edge failure.
2. Structural Stability: Four‑wing arc‑angle design reduced vibration during operation.
3. Market Confidence: Stable performance allows the distributor to promote the product confidently to local contractors.

They also indicated interest in expanding future orders depending on continued field performance.

Technical Summary