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Stirred Fluid Loss Tester

#120-70 - 115-Volt

#120-70-1 - 230-Volt

Successfully cementing the casing string of an oil or gas well is highly dependent upon the characteristics of the cement slurry. Properties that should be considered include consistency, density, the ability to quickly develop compressive strength, rheological properties, and filtration control. Well cements that have poor filtration control can lead to a complete failure of the cementing operation. In addition, the invasion of filtrates into producing zones causes formation damage, which can greatly reduce the production potential of the reservoir. Developing cement slurries that have minimal filtration loss prevents expensive remedial cementing operations and reduces formation damage. The OFITE Stirred Fluid Loss Tester provides a reliable means of determining the fluid loss characteristics of a well cement.

Method of Operation:

A cement slurry is poured into the test cell, which is then placed into the heating jacket. The gear drive system is connected to the agitation paddle, which is dimensionally equivalent to an atmospheric consistometer paddle. The desired test temperature is maintained by a digital PID temperature controller, while the necessary pressure is applied to the cell to prevent evaporation of the liquid phase. When conditioning the cement in accordance to API Specification 10 guidelines, the paddle is rotated at 150 RPM for 20 minutes. Once the cement is conditioned, the test cell is rotated 180 degrees and the desired differential pressure is applied to the cell. The filtrate is collected in a back pressure receiver for 30 minutes. The API defines fluid loss as the volume (cc) of filtrate that is collected during this 30-minute interval.

Features and Specifications:

Maximum pressure of 2,000 PSI
Maximum temperature of 400°F
Temperature is maintained by PID temperature controller
Variable paddle rotation speed (5 to 200 RPM)
Filtration portion of cell is dimensionally equivalent to an API approved HTHP test cell

Instrument Requirements:

115-Volt, 60 Hz, 18-Amp power source
230-Volt, 50 Hz, 10-Amp power source

Crated Size: 38" × 26" × 34" (97 × 66 × 86 cm)
Crated Weight: 220 lb (998 kg)