Watermelon Mills

Driscoil Equipment supplies Watermelon Mills for demanding downhole milling, reaming and well-intervention operations. The tool is designed with a large-diameter, watermelon-shaped cutting body to provide full-gauge contact and efficient removal of restrictions, scale, cement and metal obstructions in the wellbore.

Technical Specifications

Parameter Typical / Available Specification

Equipment Type Watermelon Mill / String Mill

Primary Application Downhole milling and reaming

Operation Rotary

Cutting Profile Watermelon-shaped, full-gauge profile

Cutting Material Tungsten carbide / premium hardfacing

Body Material High-strength alloy steel

Tool Connection API / NC / customer-specified connection

Nominal Size Application-specific

Outside Diameter Available in multiple OD configurations

Bore / ID Application-specific

Length Dependent on tool size and configuration

Cutting Structure Longitudinal carbide or hardfaced cutting strips

Circulation Through-body / circulation ports, configuration dependent

Rotation Right-hand rotary operation, application dependent

Operating RPM Dependent on formation, material and tool diameter

Make-Up Torque Connection and size dependent

Fishing Compatibility Can be configured for fishing and milling assemblies

Hardfacing Tungsten-carbide options available

Temperature Rating Well-condition dependent

Pressure Rating Well and connection dependent

Inspection Visual, dimensional and NDT inspection available

Customization OD, ID, connection, cutting profile and hardfacing