Modeling the phase behavior of heavy oil and solvent mixtures

Díaz, O. Castellanos; Modaresghazani, J.; Satyro, Marco A.; Yarranton, Harvey W.

doi:10.1016/j.fluid.2011.02.011

Cited by 64 publications

(38 citation statements)

References 15 publications

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“…They measured the solubility, swelling factors, gas/oil ratios, viscosities, and densities. Frauenfeld et al (2002) measured the solubility of propane and ethane in Cold Lake blend oil and the solubility of CO 2 , methane, ethane, and propane in Lloydminster Aberfeldy oil at a temperature of approximately 20 C. Badamchi-Zadeh et al (2009) reported the solubility of CO 2 and the mixtures of CO 2 and propane in Athabasca bitumen at temperatures less than 100 C.…”

Section: Literature Datamentioning

confidence: 99%

Measurement and Correlation of Solubility and Physical Properties for Gas-Saturated Athabasca Bitumen

Nourozieh

Kariznovi

Abedi

2016

SPE Production &Amp; Operations

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The addition of hydrocarbon or nonhydrocarbon gases to steam can have a beneficial effect on the performance of steam-based processes for recovery of heavy and extraheavy oils. The performance of these newly developed techniques depends on the amount of solvent dissolved in the oil and the variation of oil viscosity with temperature. Thus, full understanding of the quantitative effects of the solvent on heavy-oil viscosity and phase behaviors is crucial for feasibility studies, design, and prediction of fieldscale processes.Thus, the aim of this research is the development of an understanding of the phase behavior of carbon dioxide (CO 2 )/Athabasca-bitumen mixtures. It includes both experimental and modeling studies of solubilities and saturated-liquid densities and viscosities over a wide range of temperatures (up to 200 C), approaching the conditions of in-situ steam processes and pressures up to 6 MPa.Experimental results indicate that the dissolved gas in bitumen leads to a significant oil-viscosity reduction, and the effect is greater at lower temperature and higher pressure. The gas-saturated-bitumen densities change slightly with the dissolution of CO 2 . The modeling results show that the measured solubilities are represented adequately by the modified Peng-Robinson equation of state (Robinson and Peng 1978), with an average absolute relative deviation (AARD) of 7.5%. The saturated-liquid densities are also correlated with equation-of-state and effective-liquid-density approaches, with 0.77 and 0.41% AARDs, respectively. The viscosity data are reasonably matched with the modified Pedersen corresponding state (Pedersen and Fredenslund 1987).

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Section: Literature Datamentioning

confidence: 99%

Measurement and Correlation of Solubility and Physical Properties for Gas-Saturated Athabasca Bitumen

Nourozieh

Kariznovi

Abedi

2016

SPE Production &Amp; Operations

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“…After optimising the interaction parameters to fit experimental saturation pressures of mixtures of each solvent with the bitumen, the model is used to predict asphaltene precipitation from n-heptane dilutions of the bitumen. However, the prediction of asphaltene yields is seen to fail at high dilution ratios [150].…”

Section: Cubic Equations Of Statementioning

confidence: 99%

“…The most popular are perhaps those of Peng-Robinson (PR) [141] and Soave-Redlich-Kwong (SRK) [98]. A number of authors have used cubic equations to model asphaltene phase behaviour [58,[142][143][144][145][146][147][148][149][150]. In the model of Kohse et al [144], the Peng-Robinson equation of state is used.…”

Section: Cubic Equations Of Statementioning

confidence: 99%

“…This solid model for asphaltene is also used in the work of Tavakkoli et al [151] and in the work of Jamaluddin et al [145] who use a seventeen component (and pseudocomponent) representation of the live oil of study. Another example using this equation of state is that of Castellanos Díaz et al [150], in which this is applied to bitumen, propane and carbon dioxide mixtures. At least sixteen pseudocomponents are used to represent accurately the normal boiling point curve of the bitumen of study.…”

Section: Cubic Equations Of Statementioning

confidence: 99%

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Thermodynamic modelling of asphaltene precipitation and related phenomena

Forte

Taylor

2015

Advances in Colloid and Interface Science

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“…The overall objectives of this thesis are to: (Castellanos et al, 2011;Agrawal et al, 2012;Johnston et al, 2017).…”

Section: Objectivesmentioning

confidence: 99%

The Phase Behavior of Heavy Oil and Propane Mixtures

Mancilla-Polanco

Schoeggl

Johnston

et al. 2017

Day 2 Thu, February 16, 2017

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The phase behavior of propane diluted bitumen was mapped from temperatures between 20 and 180°C and pressures up to 10 MPa. Both vapor-liquid (VL) and liquid-liquid (LL) regions were observed. High pressure micrographs demonstrated that the heavy phase (a pitch phase) transitioned from a glass to a liquid state with increased temperature and feed propane content. Pressure-temperature and pressure-composition phase diagrams were constructed from saturation pressure and pitch phase onset data. The amount and composition of the heavy phase was also measured. Solvent-free pitch yields as high as 70 wt% of the bitumen were observed. Pseudoternary diagrams were also constructed to observe the partitioning of the species between the phases. Finally, the ability of a cubic equation-of-state with two forms of mixing rules were explored to model the data. The results can be used in the design of in situ and surface processes involving the addition of propane to bitumen.

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Modeling the phase behavior of heavy oil and solvent mixtures

Cited by 64 publications

References 15 publications

Measurement and Correlation of Solubility and Physical Properties for Gas-Saturated Athabasca Bitumen

Measurement and Correlation of Solubility and Physical Properties for Gas-Saturated Athabasca Bitumen

Thermodynamic modelling of asphaltene precipitation and related phenomena

The Phase Behavior of Heavy Oil and Propane Mixtures

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