Lubricity Tester  Model EP-212

The lubricity test is designed to simulate the torque and drag produced by a given drilling fluid down-hole.

The Model EP-212   Lubricity Tester is a high-quality instrument designed to measure the lubricating quality of drilling fluids, provide data to evaluate the type and quantity of lubricating additives that may be required, and predict wear rates of mechanical parts in known fluid systems.

EP tests are performed by applying a measured force with a torque arm to a torque-sensitive, rotating bearing cup. This provides a means of testing lubrication under extreme pressure conditions and produces an indication of the film strength of the fluid being tested.

The problem of reduction of friction between the drill string and the borehole requires a different simulation. The more common lubricity test measures fluid resistance (lubricating character) between two hardened steel moving surfaces at a hundred pounds force (which translates into a 5,000 to 10,000 psig (34,470 to 68,940 kPa) pressure on the intermediate fluid film). During the lubricity test, a steel block is pressed against a rotating steel ring. Load in inch-pounds is read directly from the dial on the torque arm.

EP/Lubricity Tester capabilities:

Measure the lubricating quality of drilling fluids

Provide data to evaluate the type and quantity of lubricating additives that may be required

Predict wear rates of mechanical parts in known fluid systems

Measure of friction is a requirement for the determination of the film strength of a lubricant, for bit bearing wear, as is obtained in EP test and for the determination of torque or drag of the drill pipe as determined in the lubricity test.

EP (Extreme Pressure Test)

This test produces an indication of the film strength of the fluid being tested by applying a measured force to a torque-sensitive bearing cup with the torque arm. The EP test is typically run at a high shear rate, 1,000 RPM, with fluid pressures ranging from 5,000 to 100,000 PSI between the steel surfaces.

Lubricity (Surface to Surface Drag Test)

The more common lubricity test measures fluid resistance of various lubricating additives. For the standard lubricity coefficient test, 150 in-pounds of force (the equivalent of 5,000 to 10,000 PSI pressure on the intermediate fluid) is applied between two hardened steel surfaces, a block, and a ring rotating at 60 RPM.

Features and Specifications

• Digital  Control - The digital control board provides more accurate data than  older, analog methods.

• User-Friendly  Interface - The simple, intuitive interface makes testing quick and  easy.  Functions include pre-set speeds (60, 200, 600, and 1000 RPM), manual speed control, and torque zeroing.

• Maximum  Speed - 1,000 RPM

• Maximum  Torque - 600 inch-pounds

Parts & Accessories

EP/Lubricity Tester, 230 Volt

Calibrated Ring & Block Pair

EP Test Ring

EP Test Block

Lubricity Test Ring

Lubricity Test Block