LOW FIELD NMR AS AN ALTERNATIVE TECHNIQUE TO ESTIMATE OF DENSITY AND VISCOSITY IN TOLUENE-HEAVY OIL MIXTURES
Fuente:
Redalyc
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Artículo científico |
| Sprache: | en |
| Veröffentlicht: |
ECOPETROL S.A.
2021
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1876479218306514944 |
|---|---|
| author | María Sandoval M |
| author_facet | María Sandoval M |
| contents | LOW FIELD NMR AS AN ALTERNATIVE TECHNIQUE TO ESTIMATE OF DENSITY AND VISCOSITY IN TOLUENE-HEAVY OIL MIXTURES María Sandoval M Herin Valderrama P Miranda Sánchez M Daniel Molina V Samuel Muñoz N Ingeniería NMR Density Heavy oil Viscosity Liquid solvents The success of low field Nuclear Magnetic Resonance (LF-NMR) to estimate heavy oil properties depends on a good selection of mathematical models and fitting parameters. Since the correlations proposed are not universally applicable, in this study, a NMR published model was chosen and tuned to determine the density and viscosity of several mixtures of a Colombian heavy oil with toluene. The process began by mixing toluene with heavy oil to obtain several measuring points with properties similar to those of heavy oils. Each mixture was taken to a 7.5 MHz spectrometer at 40°C, where NMR parameters were acquired and used in the five pre-selected mathematical models. The reliability of viscosity measurements was analysed with the root mean square error (RMSE) and maximum absolute error (MAE). After the NLS regression process, the most accurate prediction was reached through the Burcaw model, with RMSE values of 40.55 cP. On the other hand, the density was estimated with the Wen correlation with results showing a relative error percentage of less than 1%. According to such error values, the tuned models are considered a starting point to extend the NRM technique use to other Colombian heavy oils with low uncertainty levels. 2021 artículo científico 0122-5383 https://www.redalyc.org/articulo.oa?id=46574177002 https://www.redalyc.org/journal/465/46574177002/ https://www.redalyc.org/journal/465/46574177002/html/ https://www.redalyc.org/journal/465/46574177002/46574177002.epub https://www.redalyc.org/journal/465/46574177002/movil 10.29047/01225383.366 en http://www.redalyc.org/revista.oa?id=465 CT&F Ciencia, Tecnología y Futuro application/pdf ECOPETROL S.A. CT&F Ciencia, Tecnología y Futuro (Colombia) Num.2 Vol.11 |
| format | Artículo científico |
| id | redalyc_46574177002 |
| institution | Redalyc |
| language | en |
| publishDate | 2021 |
| publisher | ECOPETROL S.A. |
| spellingShingle | LOW FIELD NMR AS AN ALTERNATIVE TECHNIQUE TO ESTIMATE OF DENSITY AND VISCOSITY IN TOLUENE-HEAVY OIL MIXTURES María Sandoval M Ingeniería NMR Density Heavy oil Viscosity Liquid solvents LOW FIELD NMR AS AN ALTERNATIVE TECHNIQUE TO ESTIMATE OF DENSITY AND VISCOSITY IN TOLUENE-HEAVY OIL MIXTURES María Sandoval M Herin Valderrama P Miranda Sánchez M Daniel Molina V Samuel Muñoz N Ingeniería NMR Density Heavy oil Viscosity Liquid solvents The success of low field Nuclear Magnetic Resonance (LF-NMR) to estimate heavy oil properties depends on a good selection of mathematical models and fitting parameters. Since the correlations proposed are not universally applicable, in this study, a NMR published model was chosen and tuned to determine the density and viscosity of several mixtures of a Colombian heavy oil with toluene. The process began by mixing toluene with heavy oil to obtain several measuring points with properties similar to those of heavy oils. Each mixture was taken to a 7.5 MHz spectrometer at 40°C, where NMR parameters were acquired and used in the five pre-selected mathematical models. The reliability of viscosity measurements was analysed with the root mean square error (RMSE) and maximum absolute error (MAE). After the NLS regression process, the most accurate prediction was reached through the Burcaw model, with RMSE values of 40.55 cP. On the other hand, the density was estimated with the Wen correlation with results showing a relative error percentage of less than 1%. According to such error values, the tuned models are considered a starting point to extend the NRM technique use to other Colombian heavy oils with low uncertainty levels. 2021 artículo científico 0122-5383 https://www.redalyc.org/articulo.oa?id=46574177002 https://www.redalyc.org/journal/465/46574177002/ https://www.redalyc.org/journal/465/46574177002/html/ https://www.redalyc.org/journal/465/46574177002/46574177002.epub https://www.redalyc.org/journal/465/46574177002/movil 10.29047/01225383.366 en http://www.redalyc.org/revista.oa?id=465 CT&F Ciencia, Tecnología y Futuro application/pdf ECOPETROL S.A. CT&F Ciencia, Tecnología y Futuro (Colombia) Num.2 Vol.11 |
| title | LOW FIELD NMR AS AN ALTERNATIVE TECHNIQUE TO ESTIMATE OF DENSITY AND VISCOSITY IN TOLUENE-HEAVY OIL MIXTURES |
| topic | Ingeniería NMR Density Heavy oil Viscosity Liquid solvents |
| url | https://www.redalyc.org/articulo.oa?id=46574177002 https://www.redalyc.org/journal/465/46574177002/ https://www.redalyc.org/journal/465/46574177002/html/ https://www.redalyc.org/journal/465/46574177002/46574177002.epub https://www.redalyc.org/journal/465/46574177002/movil |