Performance indicators: parameter value
Bending stiffness: ≥1800 kN·m/rad (ISO 10407)
Surface hardness: HRC 58-62 (tungsten carbide wear-resistant belt)
Dynamic balance accuracy: G2.5 grade (ISO 1940)
Wear-resistant belt thickness: ≥8mm (replaceable design)
Quick change support: yes (API REG threaded interface)
Base material: high-strength alloy forged steel (AISI4140)
The stabilizer bar is the directional control core of the drill string system of the raise boring rig. It suppresses the vibration of the drill string and ensures the vertical drilling accuracy through the well wall contact support. Looking stabilizer bar defines new industry standards in terms of anti-eccentric wear, structural reliability and adaptability to complex formations.
Optimized support wing design: three wings are arranged in 120° equal parts, the contact area is increased by 40%, and the well inclination control accuracy is ≤0.5°/30m;
Low resistance flow channel: spiral chip guide grooves reduce annular pressure loss, and the mud return speed is >0.8m/s.
Modular wear-resistant system: replaceable tungsten carbide strips (hardness HRA 89) reduce maintenance costs by 50%;
Anti-fatigue body: integral forging + surface shot peening, resistance to alternating bending load ≥ 10^7 cycles.
Anti-stuck structure: Conical end design (15° guide angle), reduces the risk of stuck in the crushing zone by 70%;
Vibration and noise reduction characteristics: Built-in rubber damping ring, absorbs >30% of lateral vibration energy (ISO 10816 standard).
Control the rotation speed <80 RPM, and rotate the wear-resistant belt position every 100 hours.
Hard rock formation: short airfoil (wing width/well diameter ratio = 0.75), strip tungsten carbide.
Soft rock formation: long airfoil (wing width/well diameter ratio = 0.85), grid embedded alloy.
Broken zone: spiral wing structure + shock-absorbing joint, full surface coating.
High-angle well: non-rotating stabilizer wing + roller assistance, carbide roller.
