An effective procedure for wax formation modeling using multi-solid approach and PC-SAFT EOS for petroleum fluids with PNA characterization

Asbaghi, Ehsan Vahabzadeh; Assareh, Mehdi; Nazari, Farzaneh

doi:10.1016/j.petrol.2021.109103

Cited by 5 publications

(1 citation statement)

References 55 publications

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“…Sulaimon and Falade developed a two-phase multicomponent thermodynamic model based on continuous thermodynamic phase equilibrium, used a three-parameter gamma distribution function to predict WAT and wax precipitation, and proposed a generalized three-phase multicomponent thermodynamic model (EOS) based on regular solution theory. Assareh et al , distinguished crude oil fractions by paraffins, naphthenes, and aromatics, and developed a prediction model for WAT and wax precipitation using the perturbed chain statistical associative fluid theory (PC-SAFT) equation of state, adjusting the binary interaction coefficients and heat capacity differences between solids and liquids to minimize the bias due to the use of averaging relations for hydrocarbon cutting properties, which is a considerable improvement compared with previous models. With the rapid development of intelligent algorithms, artificial neural networks can be used as an effective means to simulate complex systems in the petroleum field.…”

Section: Wax: Structures and Thermodynamic And Phase Behaviorsmentioning

confidence: 99%

Advances in and Perspectives on Strategies for Improving the Flowability of Waxy Oils

Yao

Sun

et al. 2022

Energy Fuels

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The research on the flowability of waxy oil has spanned more than a century and is still attracting much attention. How to improve the flowability of waxy oil to ensure safe and efficient pipeline transportation and storage is of great practical importance for the industry. In this work, we have systematically reviewed the research advances in improving the flowability of waxy oil. First, the crystallization properties and phase behavior of waxes are described based on their chemical structure, thermodynamic properties, and solution phase properties, with emphasis on the solventized layer properties of wax crystals. Then, the mechanisms, process, and research progress in flow improvement of waxy oil are discussed from three major aspects: process improvement, equipment improvement, and chemical treatment, with emphasis on the summary of waxy oil pour point depressants in recent years. The remaining challenges and perspectives for future research on flow improvement of waxy oil are presented.

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Section: Wax: Structures and Thermodynamic And Phase Behaviorsmentioning

confidence: 99%

Advances in and Perspectives on Strategies for Improving the Flowability of Waxy Oils

Yao

Sun

et al. 2022

Energy Fuels

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An effective characterization procedure for petroleum reservoir fluids using molecular type methods and cubic equations of state

Hosseinifar

Shahverdi

2022

Can J Chem Eng

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Two eminent molecular type composition methods (paraffins, naphthenes, and aromatics [PNA] and saturates, aromatics, and polynuclear aromatics [SAP]) are employed to construct new characterization procedures for predicting the phase behaviour of petroleum fluids using a modified Peng-Robinson equation of state. The PNA and SAP methods divide a petroleum fraction into (PNA) and (SAP) homologous groups, respectively. Two generalized models are developed to predict the physical properties (Mw, SG, T b ) and equation of state (EOS) parameters (T c , P c , ω) for both PNA and SAP sub-fractions. Each generalized model covers 18 different correlations in a single mathematical form that enables the model to return 18 outputs for PNA and SAP sub-fraction parameters. A new lumping method is also developed to convert triple PNA or SAP pseudo-components into single characterized fractions. Accordingly, seven different characterization procedures are introduced and compared with one another. The first two procedures are completely constructed based on the proposed models, and the other procedures encompass the models already developed. The results obtained from the simulation of the differential liberation test for 12 diverse reservoir fluids and bubble pressure prediction for 40 oil samples revealed that the first two methods (1 and 2) could enhance the abilities of the traditional characterization procedures for reservoir fluid modelling. The mean value of average absolute relative deviations (AARDs) over a total of 52 oil samples is about 6.5% for the proposed methods and is about 13.2% for the best previously existing methods. Moreover, an efficient workflow is provided for the parameter tuning process, which is notably capable of reducing the level of prediction errors using only three adjustable parameters.

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Toward an efficient wax precipitation model: Application of multi-solid framework and PC-SAFT with focus on heavy end characterization for different crude types

Asbaghi

Nazari

Assareh

et al. 2022

Fuel

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An effective procedure for wax formation modeling using multi-solid approach and PC-SAFT EOS for petroleum fluids with PNA characterization

Cited by 5 publications

References 55 publications

Advances in and Perspectives on Strategies for Improving the Flowability of Waxy Oils

Advances in and Perspectives on Strategies for Improving the Flowability of Waxy Oils

An effective characterization procedure for petroleum reservoir fluids using molecular type methods and cubic equations of state

Toward an efficient wax precipitation model: Application of multi-solid framework and PC-SAFT with focus on heavy end characterization for different crude types

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