Investigation of non-uniform saturation distribution effects on the interpretation of pressure and pressure derivate curves

Ehsan Nikjoo, A. J. Al-Khalifa, A. Hashemi, Amir Jahanbakhsh

Research output: Contribution to journalArticle

Abstract

In this study the influences of non-uniform saturation distribution on the analysis and interpretation of pressure and pressure derivative curves is examined. The unusual behavior of the pressure transient data due to non-uniform saturation distribution makes the analysis of such reservoirs complicated and leads to ambiguity in the interpretation. In order to interpret the behavior of pressure transient data, which are influenced by changes of fluid saturation, a theoretical model is developed. The model application is demonstrated using a simulation in the reservoir containing oil and water with the variety of fluids saturation in the initial condition. The theoretical model provides a basis for understanding conclusions derived by numerical results as well as new insight for interpretation of pressure transient behavior affects by non-uniform saturation distribution.

Original languageEnglish
Pages (from-to)155-163
Number of pages9
JournalEnergy Sources, Part A: Recovery, Utilization and Environmental Effects
Volume38
Issue number2
DOIs
Publication statusPublished - 28 Jan 2016

Keywords

  • Mobility
  • non-uniform saturation
  • permeability
  • prssure derivative plot
  • skin
  • well testing

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology

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