HQ ZT950 Steel Wireline Drill Rod Pipe 89*5.6mm

HQ Wireline drill pipe rod is the core tool for core sampling drilling in geological exploration, connecting the drilling rig with the diamond drill bit, transmitting torque and drilling pressure, and providing a passage for the inner pipe assembly. Compared with global mainstream products, the drill pipe body specification is 89*5.6mm, suitable for deep-hole drilling up to 1800m. It is widely used in geological exploration, engineering geological survey, deep mining drilling, mineral exploration, etc.

Pipe body: Seamless pipe made of high-strength ZT950 steel, overall quenching and tempering, straightness ≤ 1mm/m, high coaxiality, strong resistance to bending and torsion.

Thread: Thread quenched and tempered, anti-sticking, wear-resistant, easy to tighten and loosen.

Joint: Self-connecting overall structure, no welding, high strength, good stability.

Matching tools: HQ diamond drill bit, inner pipe assembly, fishing tool, internal chamber of the winch, puller, etc

Deep hole efficient drilling: No need to lift the drill to retrieve the inner pipe core, the time for raising and lowering the drill is reduced by 60% or more. The efficiency of deep holes of 2000 meters or more is significantly superior to that of conventional drill pipes.

High core recovery rate: The inner pipe quickly collects the core, reducing erosion and collapse. The recovery rate for fractured / weak formations is ≥95%, meeting the sampling standards for deep exploration.

Long service life, low consumption and cost reduction: Reducing the lifting of the drill and the sweeping of the hole, the wear of the threads and drill bits is reduced; the service life of high-strength material is extended by 30% or more, and the overall cost of deep holes is more favorable.

Stable and safe deep hole drilling: High rigidity + less lifting of the drill, reducing disturbance of the hole wall and the risks of hole collapse and stuck drill; compatible with deep hole flushing fluid circulation, the pressure is more stable.

Multi-functional compatibility: Adequate inner diameter, allowing the placement of inclinometer and fishing tools, supporting drill while measuring inclination and handling well accidents within the hole.

Geological exploration, deep drilling, coal fields / oil and gas, engineering surveying, hydrology / geothermal energy

High-strength deep hole-specific alloy: Made of high-quality ZT950 steel, with overall quenching and tempering + surface hardening of the joint thread. The tensile and torsional strength is approximately 40% higher than NQ, suitable for 2500-meter deep hole heavy-duty working conditions.

Strengthened thread design: After hardening treatment, it prevents seizing and is resistant to wear, significantly reducing the risk of deep hole thread sticking.

High coaxiality and rigidity: Full-length precise straightening + CNC processing, with coaxiality ≤ 0.3 mm/m and straightness ≤ 1 mm/m; the pipe body has a thicker wall and greater rigidity, suppressing the bending of deep hole drilling and improving the stability of the hole wall.

Drilling tools compatible: HQ dual-tube coring assembly, HQ diamond drill bit, HQ enlarger, HQ retrieval tool

Drilling rigs compatible: XY-5, HY-8 etc. deep core drilling rigs

Length selection: For ≤ 1000 meters, choose 1.5 meters; for ≥ 1000 meters deep holes, choose 3.0 meters, to improve efficiency

1.Always use thread lubricant: It can reduce surface wear during the threading and disassembly process, metal powder fills the contact area between the threads, improving the sealing performance of the drill rod and enhancing the connection rigidity of the threads.

2. Check for wear: When the outer diameter of the joint or the pipe body wears more than 1mm (for the QA series, it is 1.5mm), replacement is necessary.

3. Prevent thread deformation: Use wrench for threading and disassembly of the drill rod to avoid using a sledgehammer to strike; it is necessary to straighten the drill rod and gently interlock to prevent thread damage and avoid causing sticking or leakage.

4. Avoid oversize construction: During construction, strictly follow the process gradation.

5. Do not use for hole opening: When using drill rod to open a hole.

6. Choose the appropriate drilling pressure: Prevent the drill rod from bending and deforming due to excessive drilling pressure.

Q1: The models of deep hole drilling equipment and associated drilling tools are diverse. How is the universality of HQ drill rods?
A: Strictly following the DCDMA international standard, it can perfectly match the entire set of accessories such as HQ drill bits, reaming tools, core sampling assemblies, and fishing tools of the same series. It is compatible with mainstream deep hole core drilling rigs like XY-5 and CSK-1000, and no equipment modification is required.

Q2: During construction, operations such as in-cave measurement of inclination, well failure rescue, etc. are needed. Can this drill rod meet the requirements?
A: The internal diameter is sufficient, and it can directly lower measurement instruments, fishing tools, etc. as auxiliary equipment. It integrates drilling, sampling, in-cave monitoring, and fault handling functions, and is fully functional.

Q3: The load of 1500–2500 meters is extremely heavy. The strength and torsional resistance of conventional drill rods are insufficient. How should the type be selected?
A: Specifically designed for deep hole heavy-load conditions, its tensile and torsional strength are superior to those of conventional medium and shallow-hole drill rods. It can stably withstand the load of deep-hole operations within 2500 meters and is the main drill rod for deep mineral resources, geothermal energy, and scientific drilling.