Introduction
Decline curve analysis, introduced in the 1940s, is one of the most popular methods to date for evaluating the future production potential of oil and gas wells. The original objective was to help with economics (its merit was not technical)
Oil and gas reserves can be estimated by identifying and extrapolating the decline characteristics of wells in a field. The methodology is intuitive, and currently used to evaluate the future production potential of wells in both conventional and unconventional reservoirs based on current trends.