Publications

This paper presents a way to predict gas well performance in a naturally fractured reef limestone reservoir using a single point test and without pseudo pressure function based on real reservoir data. Deliverability is calculated by building dual porosity reservoir models for both shape factors of Gilman and Kazemi, and Warren and Root, enriched with reservoir characteristics (flow properties) based on petroleum engineering references. Inflow Performance Relationships (IPR) from hypothetic models are then compiled to formulate the present and future dimensionless IPR equations. Due to the fact that the results show that present and future IPRs have the same trend in dimensionless form, to calculate the present and future IPR can be done using the same proposed equation. Dimensionless IPR for naturally fractured gas well reservoirs is “Vogel-like with quadratic equation in form of Pwf/Pr=f(Q/Qmax). In order to make this approach more practical the equation has been presented in the form of Q/Qmax=f(Pwf/Pr).