Magnetic assembly for use with a downhole casing perforator

Magnetic casing depth marker

Magnetic field enhancement for use in passive ranging

Magnetic hammer

Magnetic junk sub for oil wells and the like

Magnetic measurements while rotating

Magnetic particle separator for an abrasive jetting system

Magnetic ranging and controlled earth borehole drilling

Magnetic ranging while drilling parallel wells

Magnetic ranging whle drilling using an electric dipole...

Magnetic sensor system useful for detecting tool joints in a...

Magnetic signalling in pipelines

Magnetic slip retention for downhole tool

Magnetic susceptibility mud log

Magnetically activated well tool

Magnetization of target well casing string tubulars for...

Magnetization of target well casing string tubulars for...

Magnetized drive fluids

Magnetorheological fluid apparatus, especially adapted for...

Main bore isolation assembly for multi-lateral use