Product highlights:
➤ Heavy Debris Solution: Catches junks too heavy for fluid circulation (e.g., carbide teeth, bearings, bit fragments).
➤ Wellbore Guardian: Prevents debris settlement at bottom hole, protecting drill bits & BHA.
➤ Optimized Fluid Dynamics: Patented swirl-flow design maximizes junk capture efficiency.
➤ Rig-Ready Robustness:Forged alloy construction for extreme downhole conditions.
➤ Critical Fishing Tool: Integrates seamlessly with fishing tools assemblies for complex recovery ops.
Overview of Junk Sub：
The Junk Sub is a mission-critical oil tool engineered to clean wellbores by capturing heavy debris that conventional fluid circulation cannot remove. Its innovative dual-diameter design features:
- An enlarged external bowl that restricts annular flow, directing 90%+ fluid through the cup.
- A wider mandrel diameter at the cup mouth creating accelerated swirl flow.
- A sudden capacity reduction at the base generating a vortex effect.
This hydrodynamic system forces heavy objects (e.g., drill bit fragments, carbide teeth, bearings) to drop into the cup for retrieval, ensuring a clean bottom hole and protecting downhole assets.
Advantages of Junk Sub：
1. Drill Bit & BHA Protection:
- Extends drill bit service life by eliminating abrasive junk at well bottom.
- Prevents catastrophic damage to drilling tools from unexpected debris impacts.
2. Superior Debris Capture:
- Targets metal fragments 10-50x heavier than fluid-circulatable particles.
- Proven effectiveness in high-risk scenarios: lost cones, bearing failures, milled cuttings.
3. Operational Efficiency:
- Reduces non-productive time (NPT) by eliminating trips for junk-related failures.
- Integrates with standard fishing tools strings for seamless intervention.
4. Engineered Reliability:
- High-yield steel construction withstands 20,000+ psi wellbore pressures.
- Minimal pressure drop design maintains mud circulation integrity.
Technical parameters and customization options：
Why choose our Junk Sub?
Professional oil tools manufacturer, strictly following API standards.
Junk Sub adopts precision machining to ensure high-precision matching.
Customized service to meet the needs of different drilling conditions.
Global oil field application verification, reliability and durability are highly recognized.
