How do you calculate Gas to Oil Ratio for a well test?

To calculate the Gas to Oil Ratio (GOR) for a well test, divide the volume of gas produced by the volume of oil produced during the same time period. The formula is GOR = Volume of Gas (usually in standard cubic feet) / Volume of Oil (usually in barrels). This ratio helps assess the productivity and efficiency of a well, indicating the relationship between gas and oil output. It's important to ensure both volumes are measured over the same time frame for accurate results.