In this paper we describe two possible use cases of well productivity estimation obtained during the reservoir drilling process. The first concerns estimating a minimum and maximum value for the remaining reservoir footage that is required (beyond bit position) to achieve a target Productivity Index for the well. Thus the only criterion is well productivity not cost. The second concerns deciding within a pre-defined window the termination point of the well based on operator's cost-benefit criteria. The paper emphasizes description of use-case rather than description of the detailed methodology for obtaining these estimates. This is because feedback is required from teams involved in planning and execution of development wells on realistic and worthwhile use-cases, before deciding which option for productivity estimation is most appropriate and most efficient. In this paper, we present a basic method and simple examples based on synthetic data and mathematical solutions available in the literature. We place this in the context of reservoir drilling operations and decision-making.

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