The effects of production rate and initial pressure difference (p i - pdew) in well test analysis of gas condensate reservoirs

G. H. Montazeri, Z. Ziabakhsh, S. H. Tabatabaie, P. Pourafshari, M. Haghighi

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The theoretical basis for the analysis of well test data presented in this study is the use of a pseudopressure function to linearize the flow of gas condensate in porous media. In this article different techniques to analyze gas condensate well tests using single-phase pseudopressure and two-phase pseudopressure are considered. The main objective of this work was to examine the available methods for well test analysis of gas condensate reservoirs and investigate the effect of production rate and initial pressure difference (pi - pdew) on these methods. Sensitivities of the two-phase pseudopressure methods and single-phase method are presented. However, at higher endpoint relative permeability, a lower prediction from single-phase pseudopressure analysis is obtained. A lower difference between pi and pdew causes larger condensate bank size and larger Region 2 and therefore better prediction of Raghavan's approach.

Original languageEnglish
Pages (from-to)449-461
Number of pages13
JournalPetroleum Science and Technology
Volume29
Issue number5
DOIs
Publication statusPublished - Jan 2011
Externally publishedYes

Keywords

  • gas condensate reservoir
  • initial pressure difference (p - p)
  • production rate
  • single-phase pseudopressure
  • two-phase pseudopressure

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Geotechnical Engineering and Engineering Geology

Cite this