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.

Specifications

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  

Specifications

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