A new approach in correlating the oil thermodynamic properties

Avaullée, Laurent; Duchet-Suchaux, Pierre; Durandeau, Marc; Jaubert, Jean‐Noël

doi:10.1016/s0920-4105(01)00100-0

Cited by 20 publications

(20 citation statements)

References 14 publications

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“…We decided to work on synthetic petroleum fluids to avoid any characterization of the heavy fractions [24][25][26][27][28][29][30][31] which inevitably influences the results of the calculations. In other words, the composition of all the fluids studied in this article is perfectly known.…”

Section: Capability Of the Ppr78 Model To Predict The Phase Behavior mentioning

confidence: 99%

Predicting the phase equilibria of synthetic petroleum fluids with the PPR78 approach

2010

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The PPR78 approach is a group contribution-based thermodynamic model which combines at constant packing fraction the Peng-Robinson equation of state and a Van Laar-type g E model. This article demonstrates that, using classical mixing rules (linear on b and quadratic on a), the PPR78 model may also be seen as a group contribution method for the estimation of the temperature-dependent k ij of the widely used PR EoS. Our model is endowed of 15 groups and it is possible to predict the k ij for any mixture containing alkanes, aromatics, naphthenes, CO 2 , N 2 , H 2 S, and mercaptans. This study exhibits the capability of this approach to predict the phase behavior of synthetic petroleum fluids containing components of different volatilities. The many comparisons between calculated and experimental data on natural gases, crude oils, and gas condensates allow concluding that the PPR78 approach is a successful model for phase equilibria calculations of this kind of mixtures. V V C 2010 American Institute of Chemical Engineers AIChE J, 56: [3225][3226][3227][3228][3229][3230][3231][3232][3233][3234][3235] 2010

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Section: Capability Of the Ppr78 Model To Predict The Phase Behavior mentioning

confidence: 99%

Predicting the phase equilibria of synthetic petroleum fluids with the PPR78 approach

2010

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“…Extensive compositional analyses of many reservoir fluids from all over the world, such as those by Pedersen et al [5], Zuo and Zhang [6], and Elsharkawy [7], however, have shown exponential molar distributions. Hence the fact that exponential methods are extensively used by many researchers as a first choice for splitting the C 7+ fraction; for example Almehaideb et al [8], Avaullee et al [9], Elsharkawy [7], Whitson et al [10], and Zuo and Zhang [6]. Other researchers are still suggesting improvements and enhancements to such methods; for example Whitson et al [10] and Pedersen et al [5].…”

Section: Characterizing C 7+ Using Splitting and Lumpingmentioning

confidence: 99%

Comparative Study of the C7+ Characterization Methods: An Object-Oriented Approach

Naji

2011

Arab J Sci Eng

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When using equations of state (EOS) to predict the phase behavior of hydrocarbon mixtures, problems occur with the C 7+ fraction that exists in such mixtures. Minimizing such problems requires either fine-tuning the EOS and/or characterizing the C 7+ fraction. C 7+ characterization is the most important, yet most difficult step associated with the description of reservoir fluids. Several methods have been proposed for characterizing the C 7+ fraction. Collectively, these methods are grouped into two main categories: correlation and splitting and lumping. This paper revisits the most common characterization methods presented in the literature, which have received wide acceptance. In addition, a worthwhile contribution of this paper is the proposed improvement to the Katz constant-parameter splitting method. A further contribution is that the resulting program is coded in an object-oriented manner, which offers flexibility in programming and allows the different parts of the code to be described easily and in a natural manner as if they were real world objects.

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“…Jaubert et al (2002b) applied the characterization procedure of Avaulleé et al (2001) combined with the Peng-Robinson (PR) EOS (Peng and Robinson 1976) to analyze the database. The main question addressed in Jaubert et al (2002b) was whether experimental determination of the MMP by slimtube experiments is really needed if other, less-expensive multicontact tests are available.…”

Section: Introductionmentioning

confidence: 99%

Fluid Characterization for Miscible EOR Projects and CO2 Sequestration

Jessen

Stenby

2007

SPE Reservoir Evaluation &Amp; Engineering

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Accurate performance prediction of miscible enhanced-oilrecovery (EOR) projects or CO 2 sequestration in depleted oil and gas reservoirs relies in part on the ability of an equation-of-state (EOS) model to adequately represent the properties of a wide range of mixtures of the resident fluid and the injected fluid(s). The mixtures that form when gas displaces oil in a porous medium will, in many cases, differ significantly from compositions created in swelling tests and other standard pressure/volume/temperature (PVT) experiments. Multicontact experiments (e.g., slimtube displacements) are often used to condition an EOS model before application in performance evaluation of miscible displacements. However, no clear understanding exists of the impact on the resultant accuracy of the selected characterization procedure when the fluid description is subsequently included in reservoir simulation.In this paper, we present a detailed analysis of the quality of two different characterization procedures over a broad range of reservoir fluids (13 samples) for which experimental swellingtest and slimtube-displacement data are available. We explore the impact of including swelling-test and slimtube experiments in the data reduction and demonstrate that for some gas/oil systems, swelling tests do not contribute to a more accurate prediction of multicontact miscibility. Finally, we report on the impact that use of EOS models based on different characterization procedures can have on recovery predictions from dynamic 1D displacement calculations.

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A new approach in correlating the oil thermodynamic properties

Cited by 20 publications

References 14 publications

Predicting the phase equilibria of synthetic petroleum fluids with the PPR78 approach

Predicting the phase equilibria of synthetic petroleum fluids with the PPR78 approach

Comparative Study of the C7+ Characterization Methods: An Object-Oriented Approach

Fluid Characterization for Miscible EOR Projects and CO2 Sequestration

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