Viscosity prediction model optimization for Saraline-based super lightweight completion fluid at high pressure and temperature

Zulhelmi AMIR, Badrul Mohamed JAN, Ahmad Khairi Abdul WAHAB, Munawar Khalil, Brahim Si ALI, Wen Tong CHONG

Research output: Contribution to journalArticlepeer-review

Abstract

Investigation and analysis of the viscosity variation of Saraline-based super lightweight completion fluid (SLWCF) at high pressure and temperature were reported, and the viscosity prediction model was optimized. Viscosity measurements were carried out at temperature and pressure ranging from 298.15 K to 373.15 K, and 0.10 MPa to 4.48 MPa respectively. The data analysis reveals that the reduction of viscosity as a function of temperature may be divided into two regions, i.e. significant viscosity reduction at low temperature and fairly slow viscosity reduction at high temperature; the viscosity of Saraline-based SLWCF is less affected by the changes of pressure. The experimental data were fitted to four different viscosity-temperature-pressure models. The results show that, the modified Mehrotra and Svrcek's and Ghaderi's models are able to satisfactorily predict the viscosity value and measured value and describe the viscosity property at high pressure and temperature. The comparison with the Sarapar-based SLWCF reveals that the viscosity of Sarapar-based SLWCF is more affected by temperature than the Saraline-based SLWCF; pressure seems to have negligible effect on Saraline-based SLWCF viscosity; the modified Mehrotra and Svrcek's and Ghaderi's models are able to give more reliable viscosity predictions for Saraline-based SLWCF than for Sarapar-based SLWCF.

Original languageEnglish
Pages (from-to)863-868
Number of pages6
JournalPetroleum Exploration and Development
Volume43
Issue number5
DOIs
Publication statusPublished - 1 Oct 2016

Keywords

  • Saraline synthetic oil
  • high pressure and temperature
  • super lightweight completion fluid
  • underbalanced perforation
  • viscosity prediction

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