EN
HTW Thin-wall Diamond Reaming Shell
HTW reaming Shell tool belongs to the TW series of wireline core extraction large-diameter diamond reaming tools. It is designed for deep holes (≤ 2200m), hard rock / highly abrasive strata, and high load conditions. It is the core diameter maintenance tool for deep exploration of metal mines, deep geothermal wells, hydrological deep wells, and large-scale engineering surveys.
English name: HTW Reaming Shell / TW-H Reamer / Impregnated Diamond Reamer
System: TW series (BTW/NTW/HTW) wireline core, DCDMA standard
Compatible drilling tools: HTW wireline core double/ triple pipe, HQ drill pipe (φ89mm), HTW drill bit (φ95.9mm)
Core functions: Large-diameter precise wellbore protection, strong steering support and anti-slip, stable bore wall, protecting deep drilling tools and core tubes
Outer diameter: 95.9mm
Minimum Order Quantity: 1 PCS
Description
HTW reaming Shell tool belongs to the TW series of wireline core extraction large-diameter diamond reaming tools. It is designed for deep holes (≤ 2200m), hard rock / highly abrasive strata, and high load conditions. It is the core diameter maintenance tool for deep exploration of metal mines, deep geothermal wells, hydrological deep wells, and large-scale engineering surveys.
English name: HTW Reaming Shell / TW-H Reamer / Impregnated Diamond Reamer
Compatible drilling tools: HTW wireline core double/ triple pipe, HQ drill pipe, HTW drill bit
Minimum Order Quantity: 1 PCS
Structure and Materials (Deep Hole Heavy-duty Reinforcement)
1.Ultra-high-strength alloy matrix: 40CrNiMoA forged + quenched and tempered, thick-walled with high rigidity, extremely strong against torsion / vibration / fatigue, suitable for 2200m deep hole high torque, high pressure working conditions.
2. Super wear-resistant matrix formulation: coarse-grained tungsten carbide + high-cobalt binder phase, with a temperature resistance of 1100℃, high hardness and good toughness, resistant to cracking and erosion in hard rock / strong grinding formations.
3. Diamond working layer (exclusive for deep hole hard rock):
Inlaid diamond (standard): High-strength coarse-grained diamond, single drill length 3000–3500 meters, pure drilling time 280 hours +, preferred for hard rock / crushing / strong grinding formations.
PCD reinforced type: PCD + TC composite teeth embedded in the pilot section of the pilot diameter, life increased by 40%, suitable for extremely hard rock, quartz sandstone, and strong grinding layers.
Surface-set natural diamond (fast type): Large-grain natural diamond, fast drill length, smooth chip removal, efficient deep hole drilling in medium-hard intact formations.
Large-flow spiral water channel: 5 spiral ribs + wide and deep water channel + diversion slope, large water flow area, resistance drop 35%+, rapid chip removal under high flow rate in deep hole, anti-mud packing, anti-stuck drill.
Core advantages (compared with NTW/BTW)
1.Deep hole without diameter reduction: φ96mm precisely maintains diameter, with a three-layer combined diameter maintenance structure, maintaining diameter throughout 2200m, sufficient gap for changing drill bits, and no stuck drill.
2. Strong steering and control of inclination: five pads + extended guiding section, suppressing the swinging of large-diameter drilling tools, hole inclination control ≤ 0.5°/100m, suitable for deep hole directional drilling.
3. Long service life in hard rock: single shaft advance length 3500m +, pure drilling time 300 hours +, stable lifespan in crushing zones and abrasive layers.
4. Deep hole efficient chip removal: large spiral water channel design, smooth water flow, thorough chip removal, reducing the risks of deep hole sticking and burying drill bits.
5. Heavy load protection for drill tools: sharing the radial wear of deep drilling tools, extending the lifespan of HTW outer pipe and HQ drill rods, and reducing the overall cost of deep hole drilling.
Related products
