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Solubility Calculation of Oil‐Conta‐minated Drill Cuttings in Supercritical Carbon Dioxide Using Statistical Associating Fluid Theory (PC‐SAFT)
Author(s) -
Esmaeilzadeh F.,
Goodarznia I.,
Daneshi R.
Publication year - 2008
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.200700021
Subject(s) - drill cuttings , solubility , supercritical fluid , supercritical carbon dioxide , supercritical fluid extraction , carbon dioxide , chemistry , petroleum engineering , bar (unit) , drilling fluid , drill , drilling , extraction (chemistry) , thermodynamics , chromatography , analytical chemistry (journal) , materials science , organic chemistry , engineering , metallurgy , geology , physics , oceanography
Supercritical fluid extraction is a new technology that could be effectively used to treat oil‐contaminated drill cuttings generated during drilling for oil and gas. In this work, the solubility of oil‐contaminated drill cuttings in supercritical carbon dioxide is obtained by an experimental flow type apparatus. The solubility was measured at 200 bar pressure, over a temperature range of 55–79.5 °C. The measured solubility and experimental data for oil in drill cuttings were correlated using the PC‐SAFT, PR and SRK EOS models, without any adjustable parameters. Average absolute derivations of less than 15.1 %, 98.7 %, and 99.3 % are achieved between predicted and experimental values for the PC‐SAFT, PR and SRK EOS models, respectively, over a wide range of temperatures.