Effects of asphaltene content on the heavy oil viscosity at different temperatures

Luo, Peng; Gu, Yongan

doi:10.1016/j.fuel.2006.10.017

Cited by 251 publications

(204 citation statements)

References 29 publications

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“…As the zero-shear viscosity in Equation (15) was very difficult to obtain from the experiment, an apparent viscosity was used to replace it [62,63], and Equation (15) was rewritten as [7,8]:…”

Section: Rheology Of Heavy Oilmentioning

confidence: 99%

“…The viscosity of oil sample #5 was 586.8 mPa•s, which was double than that of oil sample #6 at 30 °C. This is due to the interaction force between various molecules because they increase as the asphaltene content rises, resulting in an easier asphaltene aggregation and a stronger network structure [7,8,19,64].…”

Section: Rheology Of Heavy Oilmentioning

confidence: 99%

“…The rheology of heavy oil crucially affects upstream recovery and transportation [5][6][7]. Several experimental studies have focused on the rheology of heavy oil.…”

mentioning

confidence: 99%

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Non-Newtonian Flow Characteristics of Heavy Oil in the Bohai Bay Oilfield: Experimental and Simulation Studies

Xin

et al. 2017

Energies

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Abstract:In this paper, physical experiments and numerical simulations were applied to systematically investigate the non-Newtonian flow characteristics of heavy oil in porous media. Rheological experiments were carried out to determine the rheology of heavy oil. Threshold pressure gradient (TPG) measurement experiments performed by a new micro-flow method and flow experiments were conducted to study the effect of viscosity, permeability and mobility on the flow characteristics of heavy oil. An in-house developed novel simulator considering the non-Newtonian flow was designed based on the experimental investigations. The results from the physical experiments indicated that heavy oil was a Bingham fluid with non-Newtonian flow characteristics, and its viscosity-temperature relationship conformed to the Arrhenius equation. Its viscosity decreased with an increase in temperature and a decrease in asphaltene content. The TPG measurement experiments was impacted by the flow rate, and its critical flow rate was 0.003 mL/min. The TPG decreased as the viscosity decreased or the permeability increased and had a power-law relationship with mobility. In addition, the critical viscosity had a range of 42-54 mPa·s, above which the TPG existed for a given permeability. The validation of the designed simulator was positive and acceptable when compared to the simulation results run in ECLIPSE V2013.1 and Computer Modelling Group (CMG) V2012 software as well as when compared to the results obtained during physical experiments. The difference between 0.0005 and 0.0750 MPa/m in the TPG showed a decrease of 11.55% in the oil recovery based on the simulation results, which demonstrated the largely adverse impact the TPG had on heavy oil production.

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Section: Rheology Of Heavy Oilmentioning

confidence: 99%

Section: Rheology Of Heavy Oilmentioning

confidence: 99%

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Non-Newtonian Flow Characteristics of Heavy Oil in the Bohai Bay Oilfield: Experimental and Simulation Studies

Xin

et al. 2017

Energies

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“…Many researchers explained that heavy oil viscosity usually varied dramatically during various production processes, such as a thermal or solvent injection processes [7][8][9][10]. [11] carried out many experiments to study thermal flow properties of heavy oil. The results focused on the relationships between the compositions of heavy oils, in particular asphaltine contents, and their flow *Address correspondence to this author at the MOE Key Laboratory of Petroleum Engineering, Beijing 102249, China; Tel: 010-89731163; Fax: 010-89733511; E-mail: pxiad9827@163.com properties.…”

Section: Introductionmentioning

confidence: 99%

“…Generally, heavy oil contained high contents of large molecular hydrocarbon and asphaltenes but only a small amount of light hydrocarbons and easily volatile components [4,7,11,13]. Therefore, heavy oil was a kind of high viscosity and large density of fluid, which difficultly flowed in porous media under natural conditions.…”

Section: Introductionmentioning

confidence: 99%

The Transient Method and Experimental Study on Threshold Pressure Gradient of Heavy Oil in Porous Media

Pang¹

2012

TOPEJ

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On the basis of flow characteristics and material balance principle, a one-dimensional theoretical model of heavy-oil migration in porous media was established. The model considered micro-compressible property and nonNewtonian behavior of heavy oil. A new method, the transient method, was introduced to calculate the threshold pressure gradient in porous media. The method was designed to measure the inlet pressure of porous media during experiments. Finally, the threshold pressure gradient was worked out according to the mathematical model. The threshold pressure gradient of heavy oil was more accurate by the transient method than the steady state method. The threshold pressure gradients of three oil samples in different permeable porous media were measured according to the transient method. The experimental results showed that heavy oil migration was influenced by petroleum composition and pore structure of porous media. The threshold pressure gradient gradually decreased as temperature and permeability increased in porous media.

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Experimental Setups for Hydrotreating of Petroleum Fractions

Ancheyta¹

2020

Experimental Methods for Evaluation of Hydrotreating Catalysts

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Effects of asphaltene content on the heavy oil viscosity at different temperatures

Cited by 251 publications

References 29 publications

Non-Newtonian Flow Characteristics of Heavy Oil in the Bohai Bay Oilfield: Experimental and Simulation Studies

Non-Newtonian Flow Characteristics of Heavy Oil in the Bohai Bay Oilfield: Experimental and Simulation Studies

The Transient Method and Experimental Study on Threshold Pressure Gradient of Heavy Oil in Porous Media

Experimental Setups for Hydrotreating of Petroleum Fractions

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