Ratios and Contacts

Engineers love to speak in terms of ratios – dimensionless, if possible.

Some of the ratios mentioned most often are:

GOR = gas/oil ratio

SOR = steam/oil ratio

WOR = water/oil ratio

Note that a backslash (/) is used – not a hyphen – without any spaces between the words.

The same sort of construction is used for the various fluid interfaces in a reservoir:

GOC = gas/oil contact

OWC = oil/water contact

I like to tell people that my technical writing has a high beef/bologna ratio. That usually makes them smile.

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