Characterization of Doba–Chad heavy crude oil in relation with the feasibility of pipeline transportation

Dehkissia, Soumaïne; Larachi, Faı̈çal; Rodrigue, Denis; Chornet, E.

doi:10.1016/j.fuel.2004.06.014

Cited by 14 publications

(21 citation statements)

References 13 publications

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“…Also, methods for bitumen, crude oil, and heavy petroleum fraction characterization such as asphaltene precipitation using n-alkane solvents (e.g. [22][23][24][25][26][27]) could be adapted for acid tars. Liu et al [28] used a saturates, aromatic, resin, and asphaltene (SARA) separation technique [29] to analyse coal tar from the pyrolysis of coal asphaltenes.…”

Section: Composition Of Acid Tarsmentioning

confidence: 99%

Characterization of acid tars

Leonard

Stegemann

Roy

2010

Journal of Hazardous Materials

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Section: Composition Of Acid Tarsmentioning

confidence: 99%

Characterization of acid tars

Leonard

Stegemann

Roy

2010

Journal of Hazardous Materials

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“…The results show that both the apparent viscosity and yield stress obtained by these models are largely dependent to the shear rate and decreases exponentially with increasing the temperature. Although the rheological behaviors of heavy crude oil have attracted a lot of attention in the past, much research is still required urgently in order to fully understand these properties and the mechanisms behind it (Dehkissia et al, 2004). In order to extend the knowledge of the thixotropy and yield stress of heavy crude oil, we have carried out this work.…”

Section: Introductionmentioning

confidence: 99%

A Study on Flow Characteristics of Heavy Crude Oil for Pipeline Transportation

Zhang¹,

Xu²,

Chen³

2015

Petroleum Science and Technology

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In this work, the flow characteristics of heavy crude oil were investigated by using a rheometer and a lab scale flow loop, respectively. In the experiments of rheometer, there is an approximate linear relationship between the yield stress and the area of thixotropic loop independent to the system temperature and crude oil types. A comparison between the experimental data of yield stress versus start-up rate obtained in the pipe start-up flow with those measured in the rheometer reveals that the transport characteristics of heavy crude oil can be predicted well by the rheological measurements.

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“…The high cost of conventional crude oil is arguably responsible for the increase in the production rate of heavy petroleum crude (heavy oil and bitumen) by over 150 percent in the past five years [1]. This increase has become realized partly because of the increased use of solvents among other additives to reduce oil viscosity in enhanced oil recovery (EOR) processes and pipeline transportation [2,3].…”

Section: Introductionmentioning

confidence: 99%

Correlation development for the viscosity reducing effect of solvent in an enhanced oil recovery (EOR) process

Snow¹,

D’Orsay²,

Miadonye³

2007

WIT Transactions on Ecology and the Environment, Vol 105

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Bitumen is characterized by high viscosities and requires diluent to reduce its viscosity to about 400 cp for pipeline transportation. In this study, viscosity data on heavy oil-solvent binary and ternary mixtures has been correlated. The data consist of data obtained from taking measurements of seven heavy petroleum samples, both bitumen and heavy oils, diluted with five hydrocarbon solvents and binary and ternary mixtures so to reduce the viscosity of the heavy petroleum to pipeline viscosity. The amount of solvent varied from 5-60%.Measurements of viscosity were made at a variety of temperatures ranging from 10-80°C. Thus, the entire effect of temperature on the viscosity of binary and ternary mixtures of bitumen diluted with primary and secondary solvents was evaluated. A total number of 650 data points was obtained, with the viscosity ratios between 10 2 and 10 6 . Viscosity correlation based on the combination of equations from API-TDP and Latour et al (Pet. Sci. Tech. 18(1&2) pp.1-14, 2000) was developed. The results indicate that the correlation fitted the data best compared to other models. The average absolute deviations from 2.1% to 5.2% for binary mixtures and from 1.5% to 2.6% for ternary mixtures were obtained. The equation takes into consideration the combined interaction effects of temperature and solvent on the heavy oil viscosity.

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Characterization of Doba–Chad heavy crude oil in relation with the feasibility of pipeline transportation

Cited by 14 publications

References 13 publications

Characterization of acid tars

Characterization of acid tars

A Study on Flow Characteristics of Heavy Crude Oil for Pipeline Transportation

Correlation development for the viscosity reducing effect of solvent in an enhanced oil recovery (EOR) process

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