Phase behaviour of hydrocarbon systems has a central place in the understanding of oil recovery process, along with the fluid flow properties. The volumes and composition of liquid and gas at different temperature and pressure affect hydrocarbon recovery through miscibility, liquid dropout in condensates, phase volumes, etc. Also solid hydrocarbon phases, such as asphaltenes and waxes, may influence oil recovery through well productivity and separation processes.
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pVT laboratory
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pVT and phase behaviour
- Miscibility studies
- pVTx studies
- Asphaltene precipitation
- Diffusion
- Light scattering and pendant drop measurements of interfacial tension (ultralow IFT)
Laboratory equipment (working conditions up to 1400 bar/210°C):
- automated Jeffri pVT-cell
- cells for HPHT studies
- automated slim tube apparatus
- IFT cells (pendant drop, laser light scattering)
- diffusion cell (temperature- and compositional gradients)
- rolling ball viscometer
- gas and liquid chromatography, densitometers, molecular weight, etc.
