Assemblies for the Oil & Gas Industry

Product Discussion

The Oil & Gas industry utilizes many devices containing magnets and magnetic materials.

Magnetic Torque Transfer

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 Ferrite (Ceramic), Neodymium-Iron-Boron (Neo), and Samarium Cobalt (SmCo). SmCo excels at higher temperatures and can be used up 500 ºC. Neo magnets provide stronger torque coupling at temperatures below 150 ºC with the additional advantage of lower cost. Ferrite magnets are the lowest cost option but suffer from large change is magnetic strength as temperature changes.

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

PIG's (Pipeline Inspection Gauges) or MFL

Arnold has constructed a variety of assemblies used in PIG's and Smart PIG's for magnetic flux leakage (MFL) detection.

Downhole Power Generation

Arnold manufactures a diverse range of permanent magnet rotor assemblies for use in downhole power generators. 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.  

Debris and Chip Collection

Our magnet fabrication capabilities allow us to manufacture magnets and magnetic assemblies for use in debris collection during wellbore drilling operations and subsequent hole clearage. 

NMR (Nuclear Magnetic Resonance)

Arnold has produced magnetic assemblies featuring Recoma samarium cobalt for use in borehole data acquisition in rock and sedimentary strata. 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.).