Complete rheology as well as API and HTHP filtrate analysis can also be conducted by lab personnel in a short period of time. The Fann Model 75 Automatic High Pressure, High Temperature (HTHP) Viscometer uses a newly designed proprietary software for fully automatic control for Pressure, Temperature, and Motor Speed, as well as full manipulation of data for final presentation. The instrument measures rheologies to a maximum of 20,000 psi and 500 F. It allows consistent results and more reliable data due to integrated control of temperature, pressure and motor speed.
Fann 75The Fann 75 replaces the FANN 50 (capable of measuring viscosity at up to 500 degrees and 500 psi) with a computerized instrument capable of measuring viscosity at up to 500 degrees and 20,000 psi. The Fann 75 is fully integrated with a personal computer for real time readout and digital data recording. Output can be documented with an onboard graphic display, or exported to other software applications for research and well analysis. This can be an invaluable tool in deeper projects at elevated temperatures and pressures, especially when utilizing oil muds. The ability to measure and record viscosities and gel strengths on a regular basis at bottom hole temperatures and pressures can mean the difference between success and failure. We also have a Malvern Microsizer laser particle size analyzer for solids particle size analysis, an Extreme Pressure Lubricity Meter and a Dynamic HTHP Filter Press.
Specialized HTHP equipment is available to measure filtrate up to 400 F. This includes dynamic properties where the fluid and cake are dynamically stirred. Computer aided hot rolling aging ovens are available to test muds for prolonged exposure to heat.
Lab EquipmentParticle size analysis is important to the long term effects on drilling fluids. Measurements by outside labs take days or weeks and are costly. GEO has purchased a desktop unit from Malvern with a stable single lens optics system. This allows quick setup and ease of measurement of drilling fluids. The unit is operated through a PC shared with the Fann 75. It generates a variety of reports and graphs allowing detailed analysis of the particle size distribution. Measurements are made from 300 to 0.3 microns.
In addition to the above every day duties that are performed in the laboratory, some of the other responsibilities and tests that are routinely carried out are: corrosion coupon analysis, pilot testing, evaluating new products, etc.