Taper Mills Crossover taper mills utilize the smaller diameter, lower-mill end to enter a collapsed section of casing. Then, through a combination of spudding, rotating action, the carbide covered reamer-edges mill away the undersized section to full mill diameter. The taper mill is equally effective for deburring whipstock windows. Available in OD’s from 3 ¼” to 12 ½” and in 16” to 54” lengths. The cutting surface is covered with cutting grade tungsten carbide in a nickel-silver matrix. This results in a sturdy, impact resistant tool. The cutting surface is self-sharpening for maximum useful life. The circulation ports are designed to efficiently remove the cuttings while cooling the cutting surfaces. Crossover mills are simple and easy to use. Tag the fish and pick up 2-3 feet. Rotate at 80-120 RPM and lower slowly to contact fish. Continue rotating and apply approximately 2000# per inch of mill diameter. For example, an 8 ¼”OD mill would run with 2,000 x 8.25 = 16,500#. Please note that varying weight and rotary speed may improve results.
Junk Mills Rugged Crossover junk mills make milling jobs easy even when cutting the toughest fish such as alloy-steel packers, squeeze tools, perforating guns, drill pipe, tool joints, reamer blades, and rock bits. Crossover junk mills are available concave, convex, or flat bottom in various combinations of fishing necks and stabilizers. Any specific length neck, stabilizer, or combination of both may also be ordered. Available in all sizes with 4 to 8 blades in 10” to 64 lengths. The cutting surface is covered with cutting grade tungsten carbide in a nickel-silver matrix. This results in a sturdy, impact resistant tool. The cutting surface is self-sharpening for maximum useful life. The circulation ports are designed to efficiently remove the cuttings while cooling and cutting surfaces. Crossover mills are simple and easy to use. Tag the fish and pick up 2-3 feet. Rotate at 80-120 RPM and lower slowly to contact fish. Continue rotating and apply approximately 2000# per inch of mill diameter. For example, an 8 ¼ “ OD mill would run with 2,000 x 8.25= 16,500#. Please note that varying weigh and rotary speed may improve results.
Pilot Mills Crossover pilot mills mill casing, liners, rotary shoes or large ID tubing at rates of up to 15ft./hr. Kulstrite covered blades are flat or slightly concave with self-sharpening features for longer life between dressings. They are available in all sizes.
Round-Nose Mills A 60 degree included taper on these short taper mills and Kulstrite covered spiraled reamer edges dress or clean out belled casing and liner, and require less weight and torque to do the job. Available in all sizes and in 16” to 34” lengths.
Skirted Mills Crossover junk mills are available with a skirt or guide sleeve to align the mill with the fish and keep it from rotating off the fish. Used when the top of the fish is split or distorted, the skirt or guide provides directionally stable cutting action and eliminates the possibility of casing damage. Available in all sizes.
Impact Mills Crossover impact mills are specifically designed to withstand the hammering action necessary to bust up rock bit cones. The large circulation ports provide circulation for both cutting removal and cooling. Available in all sizes.
When ordering mills or requesting a quote, please specify: OD of cutting edge OD of body Length Connection Application for which mill is to be used