Open AccessPVT Investigation of an Iraqi Reservoir
Author(s) -
Jihad Al-Joumaa,
Dr.Mohammed S. Al-Jawad,
C.W. Van Kirk
Publication year - 2021
Publication title -
mağallaẗ al-buḥūṯ wa-al-dirāsāt al-nafṭiyyaẗ
Language(s) - English
Resource type - Journals
eISSN - 2710-1096
pISSN - 2220-5381
DOI - 10.52716/jprs.v7i4.202
Subject(s) - oil field , equation of state , range (aeronautics) , field (mathematics) , petroleum engineering , sample (material) , set (abstract data type) , natural gas field , mathematics , thermodynamics , physics , geology , chemistry , engineering , computer science , natural gas , pure mathematics , organic chemistry , aerospace engineering , programming language
This investigation was made to clarify the type of reservoir fluids in an Iraqi field reservoirregarding the controversy about its type. It was known for many years as a condensate field, butin this study a different theory was investigated and proved using Winprop of CMG® software.Two equations of state (EOS) were tested and the one with minimum error percentage was used.Also, three correlations were tested to calculate the original C6+ properties, which are: Lee-Kesler , Twu and Riazi . Twu`s correlation prevailed because the results of this correlation werethe nearest to the original data, and it permits using a wide range of pressures (from zero toinfinite pressure values), which minimizes the discrepancies between the results of any equationof state, which was investigated.After achieving the closest possible match of all available properties, the envelopes wereconstructed. Winprop of CMG needs a full set of oil and gas properties from a single sample.Therefore, a recombination for the available gas and oil samples were made to construct thephase envelopes for the field system in addition to individual gas and oil phase envelopesThe result of this investigation and analysis is that the reservoir is actually a black oil field with agas cap, despite what was believed earlier as being a condensate field.