Measurement of the trapped water can give information past water
conditions in the subsurface. Resistivity from oil-water
inclusions (ROI™) CSIRO's ROI™ technique has many advantages for
the petroleum industry. 13 December 2005 | Updated 14 October
2011 Resistivity from oil-water inclusions (ROI™) is a technique
used to determine water saturation in oil reservoirs. The
advantages of using ROI™ are: it excludes fluid contamination
from filtrate it excludes spurious resistivities from
groundwater flows water resistivities can be obtained in areas
where water samples cannot be taken. CSIRO uses ROI™ to observe:
Background and technical information In the ROI™ technique
inclusions of oil and water are frozen and the melting
temperature of the water part is measured to determine the
resistivity of water in the reservoir at the time of
accumulation of oil. Resistivity from oil-water inclusions is a
technique used to determine water saturation in oil reservoirs.
Depending on the age and fill history of hydrocarbons