Journal ArticleDOI
Systematic Investigation of Asphaltene Deposition in the Wellbore and Near-Wellbore Region of a Deepwater Oil Reservoir Under Gas Injection. Part 1: Thermodynamic Modeling of the Phase Behavior of Polydisperse Asphaltenes
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TLDR
In this paper, the perturbed-chain statistical associating fluid theory (PC-SAFT) was applied to a high-asphaltene, high-resin crude oil produced from a deepwater reservoir.Abstract:
Thermodynamic modeling is conducted for a high-asphaltene, high-resin crude oil produced from a deepwater reservoir using the perturbed-chain statistical associating fluid theory (PC-SAFT). The asp...read more
Citations
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Journal ArticleDOI
Asphaltene precipitation and deposition: A critical review
TL;DR: In this article, the authors investigated the asphaltene problem from its chemistry and molecular level to field-scale implications and provided a holistic view of the problem by analyzing the existing approaches and field applicability of their findings.
Journal ArticleDOI
On the development of experimental methods to determine the rates of asphaltene precipitation, aggregation, and deposition
Shayan Enayat,Narmadha Rajan Babu,Jun Kuang,Sara Rezaee,Haiqing Lu,Mohammad Tavakkoli,Jianxin Wang,Francisco M. Vargas +7 more
TL;DR: In this article, a simple method to determine the amount of precipitated asphaltene using NIR spectroscopy measurements without the implementation of calibration curves is introduced, which can be used to calibrate the precipitation and aggregation kinetic parameters.
Journal ArticleDOI
Accurate Modeling of Asphaltene Onset Pressure in Crude Oils Under Gas Injection Using Peng–Robinson Equation of State
Mohammed I. L. Abutaqiya,Caleb J. Sisco,Yash Khemka,Muhieddine A. Safa,Ebtisam F. Ghloum,Abeer M. Rashed,Ridha Gharbi,Sriram Santhanagopalan,Misfera Al-Qahtani,Eman Al-Kandari,Francisco M. Vargas +10 more
TL;DR: Asphaltene precipitation is considered a precursor of the plugging of oil wells and subsurface equipment and is a topic of continuous interest among companies and academic institutions as mentioned in this paper.
Journal ArticleDOI
Commercial Investigation of the Ebullated-Bed Vacuum Residue Hydrocracking in the Conversion Range of 55-93.
Dicho Stratiev,Svetoslav Nenov,Ivelina Shishkova,Borislav Georgiev,Georgi Argirov,Rosen Dinkov,Dobromir Yordanov,Vassia Atanassova,Petar Vassilev,Krassimir T. Atanassov +9 more
TL;DR: The LUKOIL Neftohim Burgas vacuum residue hydrocracking has increased the vacuum residue conversion from 55 to 93% as a result of a proper feed selection, optimal catalyst condition, and the use of a Mo nanodispersed catalyst.
Journal ArticleDOI
Preaggregation of Asphaltenes in the Presence of Natural Polymers by Molecular Dynamics Simulation
Lucas Grillo Celia-Silva,Lucas Grillo Celia-Silva,Patricia Vilela,Pedro Morgado,Elizabete F. Lucas,Luís F. G. Martins,Luís F. G. Martins,Eduardo J. M. Filipe +7 more
TL;DR: In this paper, the dispersion behavior of asphaltenes in model solvent mixtures was investigated. And they used a combination of cashew nut shell liquid (CNSL), its extract, cardanol, and polycardanol as dispersant.
References
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Journal ArticleDOI
A New Two-Constant Equation of State
Ding-Yu Peng,Donald B. Robinson +1 more
TL;DR: In this paper, the attractive pressure term of the semi-empirical van der Waals equation has been modified for predicting the vapor pressure and volumetric behavior of singie-component systems.
Journal ArticleDOI
Thermodynamics of High Polymer Solutions
TL;DR: In this paper, a statistical treatment of high polymer solutions has been carried out on the basis of an idealized model, originally proposed by Meyer, which is analogous to the one ordinarily assumed in the derivation of the ''ideal'' solution laws for molecules of equal size.
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Perturbed-Chain SAFT: An Equation of State Based on a Perturbation Theory for Chain Molecules
Joachim Gross,Gabriele Sadowski +1 more
TL;DR: In this paper, a modified SAFT equation of state is developed by applying the perturbation theory of Barker and Henderson to a hard-chain reference fluid, which is applicable to mixtures of small spherical molecules such as gases, nonspherical solvents, and chainlike polymers.
Journal ArticleDOI
New reference equation of state for associating liquids
TL;DR: An equation of state for associating liquids is presented as a sum of three Helmholtz energy terms: Lennard-Lones (LJ) segment (temperature-dependent hard sphere + dispersion), chain (increment due to chain formation), and association as mentioned in this paper.