Lubricity Evaluation Monitor - OFI Testing Equipment, Inc.

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Lubricity Evaluation Monitor

Lubricity Evaluation Monitor

The Lubricity Evaluation Monitor (LEM) is a laboratory device designed to evaluate lubricants by direct comparison. It determines the coefficient of friction between an interchangeable wellbore sample (casing, formation, sandstone, etc.) pressed against a rotating steel bob while immersed in a circulating cup of test fluid.


  • Pneumatic ram applies side load pushing the bob against the sample
  • Periodic refresh of test fluid by pulling bob away from sample at definable intervals
  • Clamp allows samples of casing, formation, sandstone, etc. to be tested in the same fixture
  • Computerized data acquisition and control
  • Software
    - Operator inputs rotational speed, side load, and refresh period
    - Test archive provides access to historical data
    - Graphs rotational speed (RPM), torque (in-lb), side load (lb), and coefficient of friction with respect to time


  • Sample cup capacity: 350 mL
  • Range of Mud Weights: 0.83 - 18.0 lbs
  • Torque Transducer Maximum Range: 100 lbf-in
  • Torque Resolution: +/- 0.1% of full scale combined
  • Maximum Side Load: 60 lbf
  • Maximum Rotational Speed: 200 RPM
  • Speed of Circulating Pump: 20 - 500 RPM
  • Calibration: Coefficient of Friction of Water = .32 - .36
  • Test Cell Material: Acrylic
  • Bob Material: 4140 Steel - Rockwell Hardness of 37


  • Electrical Supply: 220 Volts
  • Air Supply: 60 - 100 PSI

Part Number

  • #113-00

Contact us for Price:

In Stock: Out Of Stock
Lead Time: 120 Days

Instruction Manual:


Brand: OFI Testing Equipment, Inc.
Product Code: 113-00

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