Gas/Oil Equilibrium Devices

Multi-Stage Separator Apparatus

Manufacturer: Vinci Technologies
Model Number: MSSA

This equipment is designed to simulate a full-scale field separation unit. It is used to determine the optimum conditions of separation by calculating the changes in formation volume factor and gas-oil ratios with changes in separator pressure and temperature. A reservoir fluid sample is brought at its bubble point pressure and reservoir temperature in a PVT cell. A known volume of this sample is then transferred into the separator cell at separator conditions of pressure and temperature. As a result of these thermodynamic changes, gases evolve from the liquids. The volumes of liquid and gas are measured at the separator conditions and the gas released is also measured by a gasometer at standard conditions. The separator test is usually carried out at a number of separator pressures in order to determine the optimum field separator conditions. The final step is carried out at atmospheric pressure. The main parameters which are determined by the experiments include the formation volume factor, the separator volume factor and the solution gas-oil ratio.



Bubblepoint Pressure Apparatus

Manufacturer: Vinci Technologies
Model Number: BPP70 Series

Surface liquid samples are validated in the PVT lab by measuring the sample’s bubblepoint pressure in particular. One of the most important quality checks performed on such samples consists in verifying that the measured bubblepoint pressure matches the pressure of the separator recorded during the sampling operations. The BPP 70 apparatus has been designed to measure the bubblepoint pressure of separator oil at separator temperature. A flash liberation test is performed on the homogenised sample to determine the bubblepoint pressure by analysing the recorded pressure-volume response at separator temperature. The apparatus can be configured with one or three sample cells.



Gas-Oil Ratio Apparatus

Manufacturer: Vinci Technologies
Model Number: GOR

The purpose of the GOR apparatus is to flash pressurised liquids and measure the gas oil ratio at equilibrium conditions. The liberated gas is measured with the gasometer at ambient conditions while the dead oil flashed is determined by gravity technique. The GOR apparatus features the capability of recirculating the evolved gas back through the on board high pressure oil pycnometer and gas pycnometer. This recirculation ensures vapor liquid equilibrium and allows the operator easy access to representative homogeneous samples of atmospheric pressure vapour and liquids. The establishment of equilibrium is essential for high pressure volatile liquids such as those encountered in reservoir fluid studies.



Equilibrium Flash Separator Apparatus

Manufacturer: Vinci Technologies
Model Number: EFSA

Designed to flash pressurised liquids and measure the gas oil ratio at equilibrium conditions. The liberated gas is measured with the gasometer at ambient conditions while the liquid is read in a sample graduated burette. It is based on two stage system with first stage at maximum pressure of 500 psi and second at atmospheric pressure. It consists of a precision bore, high pressure Pyrex cylinder of 40 cc capacity with stainless steel closures on both ends, pressure gauge, back pressure regulator, valves and tubing. All components are assembles on a metal panel.