A robust fully compositional approach to integrated production modeling asset for heavy and high viscosity oil using the example of a field in the south of the Perm region
UDC: 622.276.3
DOI: -
Authors:
VELASQUEZ CARLOS A.
1,
KOZLOVA ALENA O.1,
VOLKOV VLADIMIR A.1,
KOZLOV ANTON A.2
1 LUKOIL-Engineering Limited PermNIPIneft Branch Office in Perm, Perm, Russia
2 LUKOIL, Moscow, Russia
Keywords: integrated production modeling, fluid model at different pressure and temperature ranges (PVT), Equation of States (EOS), compositional fluid model, Lorenz – Bray – Clark correlation (LBC), heavy oil
Annotation:
Paper describes a systematic approach to model the phase behavior and viscosity of heavy oil field for a wide range of temperature using the cubic equation of state (EOS), we use a modified Soreide correlation to describe the relationship of specific gravity and molecular weight of the heavy oil sample. A high detail molar distribution model is used to fit the heavy crude assay data and the Bergman (PNA) and Cavett correlation for estimating SCN critical properties. For viscosity modeling, the LBC (Lorenz – Bray – Clark) correlation is used, with SCN critical volumes modified individually to guarantee that the LBC correlation estimates SCN viscosities estimated from a modified Bergman (PNA) and Cavett correlation based on specific gravity and normal boiling point. A robust fully compositional for heavy and high viscosity oil is developed with the purpose of being used in the IPM components, starting with the reservoir simulation model where the EOS-SCN model was lumped into six pseudo-fractions (EOS6), the well models to define the optimal multiphase correlation and flow assurance studies including wax and asphaltenes precipitation. The resulting of the compositional model (EOS) for heavy and high viscosity oil reproduces accurately all phase and volumetric behavior of crude mixtures from reservoir conditions to conditions of oil transportation and process.
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