Analytical development of a dynamic IPR for transient two-phase flow in reservoirs

Document Type

Conference Proceeding

Publication Date

1-1-2017

Abstract

This work presents a new Inflow Performance Relationship (IPR) for transient two-phase flow in reservoirs. This relationship is called Dynamic IPR and it accounts for the flow dynamics at the near-wellbore region and provides a simple but robust solution for transient simulations of two-phase flow reservoirs. The Two-Phase Dynamic IPR not only couples the wellbore bottomhole flowing pressure with oil and gas flow rates, but it also provides the pressure profile within the reservoir. Commercial software are capable of coupling discretized reservoir simulators to wellbore models; however, these are computationally more expensive and complex than the Dynamic IPR. The use of conventional IPRs, on the other hand, is simple and straightforward, but they cannot account for the wellbore-reservoir dynamic, making them inaccurate in fully transient models. The proposed Dynamic IPR is validated against the results from a state-of-the-art reservoir simulator using finite element methods. The Dynamic IPR shows an agreement of ±8% with results from the discretized reservoir simulator.

Publication Source (Journal or Book title)

Proceedings - SPE Annual Technical Conference and Exhibition

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