What is the Usage and Maintenance Guide for Drill String Strong Magnetic Tools ?

I. Usage Instructions 

1. Pre-Operation Inspection

- Ensure the magnet surface is free of cracks, rust, or oil contamination.

- Check threaded connections for integrity to prevent downhole detachment.

- Verify magnetic strength (e.g., using a Gauss meter) to confirm it meets operational requirements.

2. Downhole Operation

- Lower the drill string slowly to the target depth, avoiding sudden impacts against the wellbore or fish.

- When approaching metal debris, rotate the drill string at low RPM (≤30) to enhance magnetic attraction.

- Retrieve the string smoothly after adsorption to prevent losing captured debris.

3. Applicable Scenarios

- Primarily used for retrieving ferromagnetic materials (e.g., bit fragments, casing chips). Not suitable for non-magnetic metals (e.g., copper, aluminum).

- Recommended for vertical or low-angle wells; in high-angle wells, use with a centralizer.

II. Maintenance & Care Guidelines

1. Cleaning

- Clean the magnet surface immediately after use with diesel or a specialized solvent to remove metal shavings and drilling mud.

- Avoid scraping the magnet with sharp tools to prevent magnetic degradation.

2. Demagnetization Prevention

- Store away from strong magnetic fields (e.g., motors, welding machines).

- Separate multiple magnets with non-magnetic spacers (e.g., wooden blocks) to avoid collisions.

3. Regular Inspection

- Measure magnetic flux every 3 months; return for recharging if strength drops by >15%.

- Check sealing rings for wear (prevents fluid ingress and corrosion).

4. Storage Requirements

- Store in a dry environment (humidity ≤60%, temperature -20°C to 50°C).

- Apply anti-rust grease and wrap in moisture-proof paper for long-term storage.

III. Troubleshooting 

- Weak Adsorption: Clean the magnet or recharge if demagnetized.

- Thread Damage: Do not force connections; repair or replace damaged parts.

- Fishing Failure: Confirm if the fish is ferromagnetic; switch to alternative tools (e.g., junk baskets) if needed.

For specific operational parameters (e.g., load capacity, temperature limits by model), provide the tool model or well conditions for further guidance.

Junnie Liu

Mobile/Whatsapp:+0086-158 7765 8727
Email: landrill@landrilltools.com