This tool is employed to determine the proportion of gas produced relative to the amount of oil extracted in a well. The resultant value, typically expressed in standard cubic feet of gas per barrel of oil (scf/bbl), is a critical parameter in reservoir characterization and production optimization. For example, a high value may indicate the presence of a gas cap or free gas in the reservoir, while a low value could suggest a heavy oil reservoir with limited associated gas.
The calculation of this ratio is vital for several reasons. It provides insights into reservoir drive mechanisms, aids in predicting well performance, and informs decisions related to artificial lift requirements and surface facilities design. Historically, understanding this relationship has been essential for efficient hydrocarbon extraction and minimizing waste. Changes in this ratio over time can signal reservoir depletion or indicate the need for enhanced oil recovery techniques.