NQ Non-Diamond Blank Reaming Shell for Core Drilling
NQ non-diamond blank reaming shell designed to support drill-string alignment and maintain borehole clearance behind the core bit. Confirm exact core-system dimensions before ordering.
NQ Blank Reaming Shell for Borehole Gauge and Drill-String Stability
This non-diamond NQ reaming shell is a steel blank / support component intended to follow the core bit, help maintain borehole gauge and stabilize the core-drilling assembly. It is not a cutting bit and does not replace a diamond or PCD reaming shell where active reaming is required.
Maintains Assembly Alignment
The cylindrical shell supports drill-string guidance behind the core bit.
Protects Borehole Gauge
Correct matching helps maintain clearance for core-barrel movement and retrieval.
Non-Diamond Blank Design
Suitable when a steel blank/support shell is specified; active abrasive reaming requires a diamond/PCD version.
Actual Product Views
Technical Specifications
| Product type | NQ non-diamond blank reaming shell / stabilizing shell |
|---|---|
| Function | Follows the core bit to support alignment, maintain clearance and stabilize the drilling assembly |
| Material | Machined steel body without diamond cutting surface |
| System compatibility | NQ and project-specific core-drilling assemblies; exact dimensions must be confirmed |
| Important limitation | This non-diamond version is not intended to replace an active diamond/PCD reaming shell in abrasive or hard-rock reaming |
| Inspection points | Outer diameter/gauge, thread condition, body wear, deformation and compatibility with the bit/core barrel |
| Available options | Current selectable models are shown above; BQ/HQ/PQ or custom versions require confirmation |
| Customization | Gauge dimensions, overall length, thread, body geometry and packaging |
Selection and Operating Guidance
Recommended when
- A steel blank/support shell is specified for the drilling assembly.
- Borehole clearance and drill-string stability need to be maintained.
- The exact NQ/core-barrel dimensions can be confirmed.
Confirm before ordering
- Core system standard and mating thread
- Required outside diameter, length and gauge tolerance
- Whether active diamond/PCD reaming is required for the formation
Performance depends on formation, rig parameters, flushing and operating practice. Final configuration should be confirmed by the technical team.
Fast Quote Checklist
Send diameter, thread/connection, formation description, target depth, rig model, flushing method and quantity. Photos or geological reports improve configuration accuracy.
Hunan FengSu Drill Bit Co., Ltd. has 5 independent workshops and hundreds of employees. It has cooperated with China University of Geosciences and hired dozens of professors and doctors to research the ultra-wear-resistant material, with over 50 applications for patents. It's the manufacture of drill bit products which are efficient and strong enough to meet varied drilling requirements like natural gas, oil, coal exploration, geological exploration, and water wells. Certainly, our products will work perfectly under all kinds of rock environments. Adhering to the concept of unremitting technological innovation, strict quality control, and guaranteeing the reliability and professionalism in the products that we offer.
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