HQ LEFT HAND MALE PENCILE TAP WITH BW CONNECTION
HQ Rod Recovery Tap – High-Strength Case-Hardened Fishing Tool for Diamond Core Drilling Operations
The HQ Rod Recovery Tap is a heavy-duty, case-hardened emergency fishing tool specifically designed for diamond core drilling and mineral exploration. Engineered to retrieve stuck or lost HQ and HRQ drill rods from boreholes, this precision tool features self-tapping threads and parallel walls that provide a full-penetration grip inside the rod — ensuring secure recovery with minimal slippage or thread damage.
Built for durability, strength, and field reliability, the HQ recovery tap minimizes equipment loss, downtime, and operational costs during drilling interruptions. It is compatible with BQ, NQ, PQ, and other wireline drilling systems, and is available in both right-hand and left-hand thread versions to suit varying drilling configurations.
Whether drilling in hard, fractured rock formations or deep exploration holes, the HQ recovery tap offers unmatched performance, making it a critical tool for professional drilling contractors and exploration companies worldwide.
Description
Key Features and Specifications
🔩 Design:
The HQ recovery tap is manufactured with parallel walls and precision self-tapping threads that ensure full-depth engagement with the interior of stuck HQ or HRQ rods. This design guarantees firm gripping, reliable torque transfer, and extended tool life under heavy drilling conditions.
🔄 Thread Direction:
Standard models feature right-hand threads, which are ideal for most core drilling setups. Left-hand thread versions are available upon request for reverse rotation drilling or special recovery operations.
📏 Size Range:
Designed for rods in the 66–90 mm diameter range, conforming to GSZ-H or equivalent international standards for HQ wireline drilling equipment.
🧱 Material:
Manufactured from high-quality alloy steel and case-hardened to a surface hardness of 50–55 HRC, offering excellent wear resistance, strength, and toughness to handle the stresses of downhole recovery operations.
🧰 Standardization:
The HQ recovery tap is part of a standardized series that includes BQ, NQ, HQ, and PQ sizes, ensuring full compatibility with global core drilling systems and accessories.
🔗 Connection:
Connects easily to BW rod pins or other drill string components via a standard adapter sub, allowing quick integration into existing drill setups for efficient extraction.
🧩 Types:
Available in both male (external thread) and female (internal or bell tap) designs to suit specific rod recovery scenarios and drilling configurations.
🪓 Application and Importance
🔧 Core Drilling Recovery:
The HQ rod recovery tap is an essential emergency tool in diamond core drilling for retrieving stuck or lost HQ drill rods, core barrels, or other downhole components — ensuring that drilling operations continue without costly delays.
⚙️ Operational Flexibility:
With availability in right-hand and left-hand threads and multiple connection options, this tool adapts easily to different drilling environments, formations, and recovery challenges.
💰 Minimizing Downtime & Costs:
By providing fast, secure, and efficient rod recovery, the HQ recovery tap reduces operational downtime, prevents equipment loss, and significantly lowers maintenance and replacement costs — ensuring uninterrupted drilling progress and productivity.
📋 Summary Table
| Feature | Description |
|---|---|
| Purpose | Retrieve stuck or lost HQ drill rods |
| Thread Type | Right-hand (Left-hand available) |
| Size Range | 66–90 mm (GSZ-H standard) |
| Material | High-quality alloy steel, case-hardened (50–55 HRC) |
| Standard Sizes | BQ, NQ, HQ, PQ |
| Connection | Adapter sub to BW/NW rod pins |
| Types Available | Male (external), Female (internal/bell tap) |
