Mike- Henson Bits
Sometimes a different mill design can make all the difference to a job’s success. Reservoir Group Well Intervention Services offers a variety of specially-designed mills to solve challenging down-hole milling issues.

Full Body Aardvark Mills are ideal for drilling high pressure/ multiple plugs and cemented pipe.

Carbide Buttons range in size from 5/ 16" to 1/2"

Bit Size Range: 1-3/4" to 8-3/4" OD in 1/8" increments

Circulations Ports available in 5/16" for down-hole motors. and 1-1/4" for reverse-circulating applications

Custom Sizes also available with minimal lead time



Full Body Chomps mills are idea in applications that involve milling cast iron and other metal, or combination of cement and cast iron.

Carbide Buttons range in size from 5/16" to 1/2"

Bit Size Range: 1-3/4" to 8-3/4"OD in 1/8" increments

Circulation Ports available in 5/16" for down-hole motors. and 1-1/4" for reverse-circulating applications

Custom Sizes also available with minimal lead time



FBCS Hurricane mills are recommended for milling cement and metal/ composite plugs

Compact Dome Carbide Inserts

Mill sizes from 1-3/4” to 6-7/8” OD in 1/8” increments

1 / 2” Circulation ports for down-hole motor applications or standard circulating

Bodies Manufactured from 4140 HT Steel

Custom Sizes also available with minimal lead time





FB1CS Hurricane Mills are recommended for milling cement and composite plugs.

Compact Dome and Chisel Carbide Inserts

Mill sizes from 1-3/4” to 6-7/8” OD in 1/8” increments

1 / 2” Circulation ports for down-hole motor applications or standard circulating

Bodies Manufactured from 4140 HT Steel

Custom Sizes also available with minimal lead time



Full Body Bear Claw Mills are ideal for milling cement. Not recommended for milling metal

Carbide Buttons range in size from 5 / 16” to 1 / 2”

Bit Size Range: 1-3/4” to 8-3/4” OD in 1/8” increments

Circulation Ports available in 5/16” for down-hole motors, and 1-1/4” for reverse-circulating applications

Custom Sizes also available with minimal lead time



Full Body PDC (Polycrystalline Diamond Compact) Mills are ideal for milling extremely hard and abrasive materials

Uses range from hard cement, sand, and Barium scale

Bit Size Range: 1-3/4” to 8-3/4” OD in 1/8” increments

Circulation Ports available in 5/16” for down-hole motors, and 1-1/4” for reverse-circulating applications

Bodies Manufactured from 4140 HT Steel

Custom Sizes also available with minimal lead time