Oil & GasImprove exploration & extraction productivity

Arnold’s high performance magnets and magnetic subsystems are capable of handling the most demanding environmental conditions, both on and off shore and from shallow wells to geothermal depths. Our design engineers are experts in designing both permanent magnet and electromagnetic components and systems optimized for this demanding application.

We provide high quality assemblies and magnets for applications such as down-hole power generation, steering and torque applications, NMR exploration tools, PM pumping technology, down-hole cleaning tools, casing collar locator applications, and above-ground MFL inspection technologies. Read more about our RECOMA samarium cobalt.


RECOMA® Samarium Cobalt Grades 18-35E

Neodymium Iron Boron

Moly Permalloy
Gauges: 0.062" (1.57mm) to 0.000125" (0.0032mm)
Widths: 2.5" (65.5mm) to 0.032" (0.813mm)

Arnokrome - 2
Gauges: 0.062" (1.57mm) to 0.000125" (.0032mm)
Widths: 2.5" (65.5mm) to 0.032" (0.813mm)


  • Artificial Lift Magnets and Assemblies
  • Drive Couplings
  • Down-hole Power Generation
  • Nuclear Magnetic Resonance Assemblies
  • Debris Collection
  • Position Sensors

Artificial Lift Systems
Artificial lift is a process used on oil wells to increase pressure within the reservoir and encourage oil to the surface. When the natural drive energy of the reservoir is not strong enough to push the oil to the surface, artificial lift is employed to recover more production. Arnold Magnetic Technologies plays an important role in Artificial Lift by offering power dense RECOMA Samarium Cobalt magnet material to operate in down-hole conditions up to 350 degrees Celsius.

Drive Couplings
Arnold builds driver and follower assemblies using both co-axial and face-to-face designs. Co-axial is often used for magnetic pump couplings where the use of a rotating mechanical seal is prohibitive and the application will have minimal misalignment between the driver and follower halves. Face-to-face couplings are used in applications where misalignment between coupling halves may be unavoidable.

Magnetic materials include RECOMA SmCo, and Neodymium-Iron-Boron (Neo). SmCo excels at higher temperatures and can be used up to 500 ºC. 

Arnold is also capable of optimizing the mechanical design through 2D & 3D FEA modeling.

Down-hole Power Generation
Our specialty is highly engineered assemblies designed to tight magnetic and dimensional specifications for demanding applications. Whether your requirement calls for sleeved rotors or specially shaped and fabricated magnets, Arnold can assist in your product build.

MFL Assemblies/ Pipeline Inspection Gauges
The safety and efficiency of long transferring pipelines is essential. Over time, the pipeline may experience corrosion, erosion, abrasion, and other damage, resulting in dangerous leakage situations. Erosion degree, flaw size and the area of defects can be located by the MFL’s sensor array.

NMR/MRI Assemblies
NMR measures geological core samples to determine critical pore and fluid properties. RECOMA SmCo assemblies are used to evaluate the quantity of fluid in rock and sedimentary strata through borehole data acquisition. Generally considered a low field NMR spectrometer, the instruments are used for nuclear magnetic resonance analysis of the boreholes to estimate permeability from pore size distribution, measure rock porosity and identify pore fluids (water, oil, gas, etc.).

Debris Collection
Debris collection is a critical aspect of wellbore drilling operations and subsequent hole clearage. High strength, rare earth magnets found in magnetic extraction assemblies maximizes wellbore production by removing high volume ferrous debris.

Position Sensing Magnets
From geophones to casing collar locators, we are experts in PM sensing applications.