DOI: 10.5176/2251-3566_L318.324
Authors: Osamah Alomair1 and Mohamed El Aily
Abstract: Crude oil production system and maximizing hydrocarbon liquid recovery both are very essential to achieve good separation between gas and liquid. The aim of this study is to present an accurate methodology for optimizing separator pressures in the crude oil
production unit. The new proposed methodology determines the optimum pressures of separators in different stages of separation and consequently optimizes the operating conditions. This paper presents a new model to estimate Optimum separator pressure for crude oil reservoirs as a function of routinely measured reservoir composition and reservoir temperature. The new model was proposed based on field and laboratory analysis data of 34 oil reservoirs representing different oil reservoirs and wide range of oil properties and reservoir temperatures. Statistical error analysis was used to determine the accuracy of the model. The evaluation shows that the correlation coefficient and an average relative error are of 97 % and 0.29 % respectively. In addition, results of the proposed model were compared with Soave Redlich Kwong equation of state (SRK-EOS) and Peng Robinson equation of state (PR-EOS) and ensured its success for capturing the physical trend of oil reservoirs, and consequently is considered a very reliable one for petroleum industry.
Keywords: Oil reservoir, Optimum separator pressure, Modeling, Equation of state
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