Click on the image to check the artwork
Drilling Tool
Luhai non-magnetic drill collars are made from non-magnetic materials with low-magnetic permeability. API monogram, serial number, OD,ID, type and size of connections are stamped on recessed mill flats.
Magnetic Properties of Non-magnetic Drill Collar
When MPS=1×105/4πA/m
Relative magnetic permeabilityμr≤1.1010
Magnetic Field Gradient△B≤0.05μT
NON-MAGNETIC DRILL COLLAR