A compositional wellbore/reservoir simulator to model multiphase flow and temperature distribution

P. Pourafshary*, A. Varavei, K. Sepehrnoori, A. Podio

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Citations (Scopus)

Abstract

Production of hydrocarbon often involves gas and liquid (oil/water) concurrent flow in the wellbore. As a multi-phase/multi-component gas-oil mixture flows from the reservoir to the surface, pressure, temperature, composition and liquid holdup distributions are interrelated. However, nearly all two-phase wellbore simulations are currently performed using "black oil" simulators. In this paper, a compositional-wellbore model coupled with a reservoir simulator to compute pressure and temperature distribution is presented. In this work, compositions of liquid and gaseous phases in the wellbore can be determined by three-phase equilibrium flash calculations and by considering the slip between phases. Our simulator has the capability of predicting the temperature profile in the wellbore, which helps to predict multiphase flow physics such as liquid holdup and pressure drop more accurately. As the wellbore model is coupled with a reservoir simulator, it can be used as a tool to calculate fluid-flow compositions between reservoir and wellbore. The simulated results of our compositional model were compared to the equivalent blackoil model for pressure and temperature distribution. Although the input requirements and computing expenses are higher for compositional calculations than for blackoil, our simulations show that in some cases, such as those involving highly-volatile oil and retrograde condensate gas, ignoring compositional effects may lead to errors in pressure profile prediction for the wellbore. copyright 2008,International Petroleum Conference.

Original languageEnglish
Title of host publicationInternational Petroleum Technology Conference, IPTC 2008
PublisherSociety of Petroleum Engineers
Pages774-787
Number of pages14
ISBN (Print)9781605609546
DOIs
Publication statusPublished - 2008
Externally publishedYes
Event3rd IPM International Conference on Fundamentals of Software Engineering, Conference, FSEN 2009 - Kish Island, Iran, Islamic Republic of
Duration: Apr 15 2009Apr 17 2009

Publication series

NameInternational Petroleum Technology Conference, IPTC 2008
Volume2

Conference

Conference3rd IPM International Conference on Fundamentals of Software Engineering, Conference, FSEN 2009
Country/TerritoryIran, Islamic Republic of
CityKish Island
Period4/15/094/17/09

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Fuel Technology

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