The YTQC Type String Magnetic is specially engineered for downhole fishing and milling operations where metal debris recovery is required during the milling process. Unlike conventional debris recovery methods that require separate clean-out runs after milling, this tool allows simultaneous milling and magnetic debris collection in a single operation.
During operation, metal debris generated at the bottom hole is circulated by drilling fluid flow and attracted to the tool’s high-strength magnetic body. The collected ferrous particles are retained on the magnetic surface and retrieved together with the drill string when pulled out of the well.
This continuous debris collection capability helps maintain bottom hole cleanliness throughout the milling process, reducing risks associated with loose metal debris remaining in the wellbore.
Manufactured with durable downhole-grade materials and designed for compatibility with standard junk mills, the YTQC String Magnetic provides reliable performance in demanding drilling and fishing environments.
Key Features
-
High-strength magnetic assembly
-
Simultaneous milling and debris collection
-
Durable heavy-duty downhole construction
-
Compatible with standard junk mills
-
Continuous bottom hole cleaning capability
-
Efficient ferrous debris recovery
-
Reliable performance in severe well conditions
-
Designed for repeated fishing and milling operations
Applications
-
Downhole Fishing Operations
-
Milling Operations
-
Bottom Hole Clean-Out
-
Ferrous Debris Recovery
-
Drill String Clean-Out
-
Junk Recovery Operations
-
Workover & Well Intervention
-
Milling Debris Management
Working Principle
During milling and fishing operations, metal debris generated at the bottom of the well is circulated by drilling fluid flow. Under the influence of the tool’s high-strength magnetic field, ferrous debris is attracted and retained on the magnetic body of the drill string. The debris is then retrieved to surface together with the tool assembly, allowing continuous bottom hole cleaning throughout the milling operation.
Advantages
-
Eliminates separate debris recovery trips
-
Improves operational efficiency
-
Reduces non-productive time (NPT)
-
Continuous wellbore clean-out during milling
-
Strong magnetic holding capability
-
Reliable debris recovery performance
-
Enhances downhole operational safety
-
Suitable for various casing sizes and milling applications
