Prediction of Sara line-based super lightweight completion fluid densities at elevated pressures and temperatures

摘要

This paper presents a concise investigation of the density of Saraline-based super lightweight completion fluid (SLWCF) at elevated temperatures and pressures. Fluid density was measured at temperatures and pressure ranging from 313.15 K to 393.15 K, and 0.1 MPa to 25 MPa, respectively. In this work, the experimental data were fitted to the Tait-like equation and the generated results were statistically evaluated. Based on the results, it suggests that the Tait-like equation is able to satisfactorily predict the relationship between the density of the fluids as a function of pressure and temperature. The results also showed that the predicted density values are very close to the actual data with very low deviation. The predicted density values based on the Tait-like equation are also in good agreement with the regressed model results. This confirmed the reliability and accuracy of density prediction using the Tait-like equation. Furthermore, it was also found that the Tait-like equation gives better density predictions for Saraline-based SLWCF than Sarapar-based SLWCF. (C) 2015 Elsevier B.V. All rights reserved.