Capabilities:

Reservoir Testing

Reservoir permeability is often just as important as coal thickness and gas content. CGT offers state-of-the-art Reservoir Transient Testing of coals and shales, with techniques based on specific needs of the exploration program, including:

• Drill Stem Testing (openhole during drilling);
• Injection/Falloff Testing (openhole or cased hole);
• Interference Testing (multi-well test for directional perm. & compressibility).
• Long-Term Production/Shut-In Testing (on stimulated or unstimulated wells)

CGT owns all the equipment needed for conducting Injection/Falloff tests in water-saturated wells. This hydrology equipment includes:

• Inflatable Packers for straddling zones with diameters up to 11” (280 mm);
• Low-Rate, High-Pressure Injection Pump with rates from 0.1 to 10 lpm;
• Downhole, Surface-Readout Pressure Gauge with automatic data logging.

Acquired data is analyzed with state-of-the-art software for modern derivative analysis or based on classical methods.