Gas Migration Analyzer Apparatus
TG-7200 Gas Migration Analyzer to realistically simulate gas migration scenarios of varying severity.
Model TG-7200 Gas Migration Analyzer is a precision instrument that measures four key aspects of oil-well cement: (a) its susceptibility to gas migration;
(b) its degree of hydration;
(c) its shrinkage during curing;
(d) the gas permeability of the cement.
Model TG-7200 is a closed system in which nitrogen gas is injected into the bottom of a cement slurry at any time during its hydration (setting). The cement’s susceptibility to gas migration is determined by whether or not the nitrogen gas injection pressure is transmitted up through the column of cement to the opposite (top) side of the cement sample where the pore pressure is measured.
Gas migration will result in the pore pressure of the sample rising and possibly becoming and/or remaining equal to the gas injection pressure. If no gas migration occurs, the pore pressure will continue to drop (due to the shrinkage and loss of fluid communication through the sample) during hydration, possibly continuing to reach a vacuum.
Model TG-7200 is designed to be as easy to use as possible. The instrument’s software controls, records and displays all test measurements in real time.
Test conditions, including the static gel strength profile of the cement, are easily programmed and controlled through this system. As the system is designed to avoid line plugging, clean-up after testing is both quick and easy.
Temperature Range 20-163ºC
Pressures Maximum 1000 psi
PressureMeasurementAccuracy 0.2%ofFullScale
PressureMeasurementResolution 0.25psi
PressureControlAccuracy ±10-20psi
CementTemperatureandCabinetTemperature
Measurement Accuracy ±0.5°C
Measurement Resolution0.1°C
Oven Temperature
Measurement Accuracy ±1°C
Measurement Resolution0.1°C
Temperature Control Stability ±0.5°
GasInjectionFlowRate 0 – 5 sccm of nitrogen
Confining Flow Rate 0-5sccmofnitrogen
FlowRateMeasurementAccuracy
1.2 %ofFull Scale(±0.06sccm)
FlowRateMeasurementResolution 0.01 sccm
CellVolumes
Cementsample417cm3 Accumulator 100 cm3
Utilities
Water
20-80psi Air
20-160psi
Nitrogen
1000-3000psi
Power Supply
220VAC±10%,50/60 Hz
Dimensions
90x110x75cm
Temperature Range Ambientto325ºF(163ºC) Pressures Maximum 1000 psi / 6.9 MPa
PressureMeasurementAccuracy
0.2%ofFullScale
PressureMeasurementResolution
0.25psi/1.7kPa
PressureControlAccuracy
±10-20psi/70-140kPa
CementTemperatureandCabinetTemperature
Measurement Accuracy ±0.5°C Measurement Resolution0.1°C Oven TemperatureMeasurement Accuracy ±1°C Measurement Resolution0.1°C Temperature Control Stability
±0.5°
GasInjectionFlowRate 0 – 5 sccm of nitrogen Confining Flow Rate
0-5sccmofnitrogen
FlowRateMeasurementAccuracy
1.2 %ofFull Scale(±0.06sccm)
FlowRateMeasurementResolution
0.01 sccm
CellVolumes
Cementsample417cm3 Accumulator 100 cm3 Utilities
Water
20-80psi/140–550kPa Air
20-160psi/140—1100kPa
Nitrogen
1000-3000psi/7-21MPa
Power Supply
220VAC±15%,50/60 Hz,10A 1-phase
PhysicalDimensions
Dimensions(hxwxd)
92x112x74cm Weight
1000lb/450kg