Total Producing Oil/Gas Ratio

A typical problem that often arises in the engineering of gas-condensate reservoirs is that all the data required to calculate well stream gas volumes and well stream specific gravity are not available and must be estimated. In practice, we often report only the first-stage-separator GOR (relative to stock-tank-oil volume) and gas specific gravity.

To calculate the well stream gas specific gravity, the total producing OGR is needed to be calculated.

Reference: Phase Behavior, Curtis H. Whitson and Michael R. Brule