Measurement and Correlation of Viscosity and Density for Compressed Athabasca Bitumen at Temperatures Up to 200ºC

Kariznovi, Mohammad; Nourozieh, Hossein; Abedi, Jalal

doi:10.2118/173182-pa

Cited by 19 publications

(7 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Table A-1 summarizes the results of viscosity measurements for mixtures of light solvents and heavy oil/bitumen available in the literature. The effects of pressure and temperature on bitumen viscosity saturated with N 2 , CO, CO 2 , C 1 , C 2 , C 3 , and C 4 have been previously studied. − Badamchi-Zadeh et al measured the viscosity of Athabasca bitumen saturated with C 3 at 10 °C < T < 50 °C. Freitag et al measured the viscosity of a C 3 –Lloydminster oil system at T < 30 °C and pressures less than C 3 saturation pressure.…”

Section: Introductionmentioning

confidence: 99%

An Experimental and Modeling Study on Interactions of Cold Lake Bitumen with CO₂, C₃, and C₄ at High Temperatures

Eghbali

Dehghanpour

2019

Energy Fuels

View full text Add to dashboard Cite

Coinjecting CO2 and light hydrocarbons with steam into oil sand reservoirs can improve the efficiency of the SAGD (steam assisted gravity drainage) process by reducing the steam oil ratio (SOR). The effects of these solvents on bitumen recovery enhancement depend on reservoir properties and operating conditions. To investigate the effects of solvents on bitumen viscosity in a solvent aided process, phase behaviors and viscosities of CO2–, C3–, and C4–bitumen systems were measured and modeled at high temperatures. Using the calibrated Peng–Robinson equation of state (PR-EOS), the solubilities of solvents in the Clearwater bitumen sample from the Cold Lake region were predicted. High-pressure and high-temperature equipment using an electromagnetic-based viscometer was customized to measure the viscosities of CO2–, C3–, and C4–bitumen mixtures. The measured viscosity data were used to calibrate a nonlinear viscosity model which was used to predict liquid phase viscosity as a function of solvent solubility and temperature. The effects of solvent dissolution on bitumen viscosity were investigated using PR-EOS and the calibrated viscosity model. The results show that dissolving CO2, C3, and C4 in bitumen decreases its viscosity. This viscosity reduction is lowest and highest in the case of CO2 and C4 dissolution, respectively. The effect of solvent dissolution on viscosity reduction is more pronounced at lower temperatures. EOS predictions and viscosity measurements indicate that increasing concentration of CO2, C3, and C4 above a certain threshold has a limited effect on reducing bitumen viscosity. At threshold solvent concentrations, bitumen viscosity can be reduced by 1.7, 5.6, and 15.2 times using CO2, C3, and C4, respectively, at 120 °C. Solubility and viscosity data suggest that C4 has the potential to be used in hot-solvent recovery methods in shallow and deep oil sand reservoirs. C3 may be a more effective solvent in deeper reservoirs which allow higher operating pressures. The modified viscosity model showed better performance than the Lobe and Shu correlations and logarithmic mixing rule. This model improves existing correlations for predicting viscosities of light solvent−bitumen mixtures since it requires less input data and does not require density data.

show abstract

Section: Introductionmentioning

confidence: 99%

An Experimental and Modeling Study on Interactions of Cold Lake Bitumen with CO₂, C₃, and C₄ at High Temperatures

Eghbali

Dehghanpour

2019

Energy Fuels

View full text Add to dashboard Cite

show abstract

“…Kariznovi et al calculated a 1 to a 5 for MacKay River bitumen and their results are presented in Table .…”

Section: Resultsmentioning

confidence: 99%

Thermo‐physical properties of n‐pentane/bitumen and n‐hexane/bitumen mixture systems

et al. 2017

Self Cite

View full text Add to dashboard Cite

The gravity drainage as a result of viscosity reduction is the main governing mechanism of the solvent-aided thermal bitumen recovery processes. Therefore, the density and viscosity of the diluted or heated bitumen are essential to predict the oil production rate. In this paper, we report thermophysical properties of n-pentane/bitumen and n-hexane/bitumen mixtures. The density and viscosity of Athabasca bitumen diluted with n-pentane and n-hexane were measured at different temperatures (30 to 190 8C), pressures (2 to 8 MPa), and solvent mass fractions (0.05 to 0.5). Various correlations and mixing rules proposed in the literature were examined to calculate the density and viscosity of the diluted bitumen. This study proposes appropriate mixing rules and generalized parameters for predicting the density and viscosity of solvent-bitumen systems. Our findings will find applications in the design and simulation of heavy oil and bitumen solvent-aided thermal recovery processes.

show abstract

“…Viscosity, the density of bitumen, and interfacial tension between water and bitumen that significantly impact bitumen recovery are influenced by temperature. [52][53][54] In literature, a remarkable decrease in bitumen viscosity is obtained with temperature increasing from 40 °C to 50 °C. As a comparison, bitumen density and interfacial tension decrease a little with increasing the temperature.…”

Section: Effect Of Flow Velocitymentioning

confidence: 98%

Microbubble Enhanced Bitumen Separation from Tailing Slurries with High Solid Contents

Zhou

Sontti

Zhou

et al. 2022

Preprint

View full text Add to dashboard Cite

Removing bitumen from oil-sands tailings reduces greenhouse gas emission during waste disposal. However, it is technically challenging to efficiently recover bitumen residual in tailing slurries with high solid contents, due to the tiny fraction of bitumen and complicated composition in the tailings. This work focuses on microbubble-enhanced bitumen recovery in a flow of artificial tailings that consisted of 50 wt% solids, 0.2 wt% bitumen and 49.8 wt% process water. Using a laboratory\textendash scale transport pipeline loop, we show that several operation conditions had a positive impact on the efficiency of bitumen recovery, including bubble formation from intensified cavitation, the addition of gas integrated with cavitation, or increasing the temperature up to 52 C. The efficiency of bitumen recovery was even higher from the addition of CO_{2} bubbles compared to air bubbles. Under optimal conditions, more than 61 % bitumen was recovered from an extremely initial fraction of 0.2 wt% with the generation of microbubbles. This work provides guideline in finding an effective combination of operational conditions for bitumen separation from hydrotransported real tailings containing high solid content. The same approach may be also applicable for cleaning of oil contaminated slurries.

show abstract

Measurement and Correlation of Viscosity and Density for Compressed Athabasca Bitumen at Temperatures Up to 200ºC

Cited by 19 publications

References 29 publications

An Experimental and Modeling Study on Interactions of Cold Lake Bitumen with CO₂, C₃, and C₄ at High Temperatures

An Experimental and Modeling Study on Interactions of Cold Lake Bitumen with CO₂, C₃, and C₄ at High Temperatures

Thermo‐physical properties of n‐pentane/bitumen and n‐hexane/bitumen mixture systems

Microbubble Enhanced Bitumen Separation from Tailing Slurries with High Solid Contents

Contact Info

Product

Resources

About

Measurement and Correlation of Viscosity and Density for Compressed Athabasca Bitumen at Temperatures Up to 200ºC

Cited by 19 publications

References 29 publications

An Experimental and Modeling Study on Interactions of Cold Lake Bitumen with CO2, C3, and C4 at High Temperatures

An Experimental and Modeling Study on Interactions of Cold Lake Bitumen with CO2, C3, and C4 at High Temperatures

Thermo‐physical properties of n‐pentane/bitumen and n‐hexane/bitumen mixture systems

Microbubble Enhanced Bitumen Separation from Tailing Slurries with High Solid Contents

Contact Info

Product

Resources

About

An Experimental and Modeling Study on Interactions of Cold Lake Bitumen with CO₂, C₃, and C₄ at High Temperatures

An Experimental and Modeling Study on Interactions of Cold Lake Bitumen with CO₂, C₃, and C₄ at High Temperatures