Abstract
Reservoir deliverability is defined as the oil or gas production rate achievable from a reservoir at a given bottom-hole pressure. It is a major factor affecting well deliverability. Reservoir deliverability determines types of completion and artificial lift methods to be used. This chapter presents and illustrates various mathematical models for estimating deliverability of oil and gas reservoirs penetrated by different types of wells including vertical, horizontal, multilateral, fractured, and multistage fractured wells. Production engineers should make selections of the models based on the best estimate of his/her reservoir conditions, i.e., flow regime and pressure level. The selected models should be validated with actual well production rate and bottom-hole pressure. At least one test point is required to validate a straight-line (single-liquid flow) inflow performance relationship (IPR) model. At least two test points are required to validate a curve (single-gas flow or two-phase flow) IPR model.
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