What is the comprehensive decline rate?

Refers to the rate of change or decline of oil and gas production per unit time in an old well.

The comprehensive decline rate only talks about old wells, not new wells, that is, considering the comprehensive decline of production of old wells and various stimulation measures. In the production management of oil and gas fields, the comprehensive decline rate is defined as the difference between the output of oil and gas fields or oil and gas wells at the end of the stage (excluding the increased output of new wells) and the output at the beginning of the stage divided by the output at the beginning of the stage. It reflects the comprehensive decline of actual production under the conditions of old wells and various stimulation measures in oil and gas fields.