High-Energy Rubber Rotating Casing Saver Sub: Dual-Action Protection for Drilling Operations
Solve Critical Drilling Challenges
Metal-to-Casing Abrasion causes:
-$250K-$1M/well casing replacement costs
-34% drill string failure risk in ERD wells
-HSE incidents from worn casing leaks
Excessive Torque leads to:
⛔ ROP reduction >30% in lateral sections
⛔ Stuck pipe events costing $120K/day
How Our Technology Works
Dual-Function Mechanical Design
Component | Role | Innovation |
Viscoelastic Rubber Sleeve | Absorbs lateral loads | Self-lubricating polymer (0.08 CoF) |
Precision Mandrel | Transfers rotation | Hardened 4140 steel + WC coating |
Bearing Interface | Enables 360° rotation | 250 RPM continuous operation |
→ Converts destructive friction into rotational energy
→ Creates buffer zone between tool joints & casing
Quantifiable Operational Benefits
✅ Casing Integrity Protection
Reduce wear rates by ≥80% (API TR 7PER15K verified)
Extend casing life through 3+ wells
✅ Drilling Efficiency Boost
Lower surface torque 18-25%
Enable higher RPM in curves (dogleg severity ≤8°/100ft)
✅ Cost & Risk Reduction
Save $150K-$400K/well on premature casing replacement
Decrease stuck pipe risk by 40%
Technical Specifications
◆ Connections: API NC46-NC77, 6-5/8" REG-7-5/8" REG
◆ Temp Rating: -40°C to 175°C (H₂S/CO₂ resistant)
◆ Max OD/ID: 12.25"/3.25"
◆ Load Capacity:
Axial Static: 800,000 lbf
Dynamic Side Load: 45,000 lbf
◆ Certifications: ISO 10407-2, API Q1
Ideal Applications
Shale Gas Horizontals: Protect production casing in 10,000ft laterals
Deepwater Wells: Mitigate wear in riser-critical zones
Salt Dome Drilling: Prevent casing wear in corrosive formations
Geothermal Projects: High-temp operation to 175°C
