A Basic Primer on Hydrocarbon and Water Saturation (Sh-Sw)
Автор: Alan Foum Geophysicist
Загружено: 2024-05-09
Просмотров: 2185
Hydrocarbon Saturation is a major factor in the Volumetric equation
The pores are filled with fluid wither brine water, oil, natural gas or non hydrocarbon gases
The proportion of hydrocarbons in the pores is the hydrocarbon saturation, Sh
The portion of water in the pores is the water saturation, Sw
Sh = (1-Sw)
Higher Sh means that the pores contain more hydrocarbon
Water saturation is averaged for each layer in basic volumetrics
Water saturation in static models is generally modelled using saturation height functions for each rock type
In dynamic models water saturation changes with production – this can be history matched with data measurements – e.g. TDT logs
Water saturation is not measured by borehole logs directly but is calculated from other measurements
Water saturation is related to porosity and permeability – lower porosity rocks will have higher water saturations
Want to know more – then follow Steve Cuddy on LinkedIn
Also AAPG wiki and SPE Petro wiki
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