Determination of Deliverability Equation and IPR for Siba Gas Condensate Reservoir in (Iraq)—Case Study

  • Ghazwan Noori Saad JreouEmail author
Part of the Advances in Science, Technology & Innovation book series (ASTI)


A well deliverability equation is important to measure production capabilities under certain conditions of reservoirs’ and bottom hole flowing pressures. Therefore, this work offered a gas deliverability equation for the Siba Gas Condensate Field in Iraq, particularly for the Yamama reservoir formation. The equation was obtained according to the methods of Houpert and Rawlins–Schellhardt for pressure-squared and pseudo pressure techniques. Results revealed that despite the lack of relevant information, the obtained deliverability equation was acceptable with mean absolute percentage errors (MAPEs) equal to 0.145053, 0.054328, 0.050463, and 0.046233, relative to available measured data. A generalized inflow performance relationship (IPR) from the literature was chosen for verification and comparison. Good and acceptable results were obtained with MAPEs equal to 0.001102726 and 0.001052612. A future IPR was derived to predict the flow behavior of the target reservoir production with a range of reservoir pressures no less than the current reservoir pressure of 8593 psia. The prediction was aimed at avoiding the loss of a significant amount of condensate in the reservoir because its measured dew point pressure is equal to 9021.35 psia. The constructed future IPR was compared with the generalized future IPR, and both showed good agreement with a MAPE equal to 5.234%.


Gas condensate Gas well deliverability Siba gas condensate field—Iraq IPR gas condensate Gas condensate deliverability performance 


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Authors and Affiliations

  1. 1.College of EngineeringUniversity of KufaKufaIraq

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