A new HYSYS model for underground gasification of hydrocarbons under hydrothermal conditions

Y.M. Alshammari; K. Hellgardt

doi:10.1016/j.ijhydene.2014.05.182

A new HYSYS model for underground gasification of hydrocarbons under hydrothermal conditions

Y.M. Alshammari, K. Hellgardt

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

A new subsurface process model was developed using the ASPEN HYSYS simulation environment to analyse the process energy and gasification efficiency at steady-state equilibrium conditions. Injection and production wells were simulated using the HYSYS pipe flow utilities which makes use of the Beggs and Brill flow correlation applicable for vertical pipes. The downhole reservoir hydrothermal reactions were assumed to be in equilibrium, and hence, the Gibbs reactor was used. It was found that high W/C ratios and low O/C ratios are required to maximise gasification efficiency at a constant hydrocarbon feed flowrate, while the opposite is true for the energy efficiency. This occurs due to the dependence of process energy efficiency on the gas pressure and temperature at surface, while the gasification efficiency depends on the gas composition which is determined by the reservoir reaction conditions which affects production distribution. Another effect of paramount importance is the increase in reservoir production rate which was found to directly enhance both energy and gasification efficiency showing conditions where the both efficiencies are theoretically maximised. Results open new routes for techno-economic assessment of commercial implementation of underground gasification of hydrocarbons. © 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

Original language	English (US)
Pages (from-to)	12648-12656
Number of pages	9
Journal	International Journal of Hydrogen Energy
Volume	39
Issue number	24
DOIs	https://doi.org/10.1016/j.ijhydene.2014.05.182
State	Published - Aug 2014
Externally published	Yes

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: Authors would like to thanks KAUST and the Saudi Royal Commission for Jubail and Yanbu for sponsoring this project. Mr. Alshammari would also like to thank Prof. Geoffrey Maitland for research guidance and support.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.ijhydene.2014.05.182

Cite this

@article{71e876a3f08848e88274dad43c2e00aa,

title = "A new HYSYS model for underground gasification of hydrocarbons under hydrothermal conditions",

abstract = "A new subsurface process model was developed using the ASPEN HYSYS simulation environment to analyse the process energy and gasification efficiency at steady-state equilibrium conditions. Injection and production wells were simulated using the HYSYS pipe flow utilities which makes use of the Beggs and Brill flow correlation applicable for vertical pipes. The downhole reservoir hydrothermal reactions were assumed to be in equilibrium, and hence, the Gibbs reactor was used. It was found that high W/C ratios and low O/C ratios are required to maximise gasification efficiency at a constant hydrocarbon feed flowrate, while the opposite is true for the energy efficiency. This occurs due to the dependence of process energy efficiency on the gas pressure and temperature at surface, while the gasification efficiency depends on the gas composition which is determined by the reservoir reaction conditions which affects production distribution. Another effect of paramount importance is the increase in reservoir production rate which was found to directly enhance both energy and gasification efficiency showing conditions where the both efficiencies are theoretically maximised. Results open new routes for techno-economic assessment of commercial implementation of underground gasification of hydrocarbons. {\textcopyright} 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.",

author = "Y.M. Alshammari and K. Hellgardt",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: Authors would like to thanks KAUST and the Saudi Royal Commission for Jubail and Yanbu for sponsoring this project. Mr. Alshammari would also like to thank Prof. Geoffrey Maitland for research guidance and support. This publication acknowledges KAUST support, but has no KAUST affiliated authors.",

year = "2014",

month = aug,

doi = "10.1016/j.ijhydene.2014.05.182",

language = "English (US)",

volume = "39",

pages = "12648--12656",

journal = "International Journal of Hydrogen Energy",

issn = "0360-3199",

publisher = "Elsevier Ltd",

number = "24",

}

TY - JOUR

T1 - A new HYSYS model for underground gasification of hydrocarbons under hydrothermal conditions

AU - Alshammari, Y.M.

AU - Hellgardt, K.

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: Authors would like to thanks KAUST and the Saudi Royal Commission for Jubail and Yanbu for sponsoring this project. Mr. Alshammari would also like to thank Prof. Geoffrey Maitland for research guidance and support. This publication acknowledges KAUST support, but has no KAUST affiliated authors.

PY - 2014/8

Y1 - 2014/8

N2 - A new subsurface process model was developed using the ASPEN HYSYS simulation environment to analyse the process energy and gasification efficiency at steady-state equilibrium conditions. Injection and production wells were simulated using the HYSYS pipe flow utilities which makes use of the Beggs and Brill flow correlation applicable for vertical pipes. The downhole reservoir hydrothermal reactions were assumed to be in equilibrium, and hence, the Gibbs reactor was used. It was found that high W/C ratios and low O/C ratios are required to maximise gasification efficiency at a constant hydrocarbon feed flowrate, while the opposite is true for the energy efficiency. This occurs due to the dependence of process energy efficiency on the gas pressure and temperature at surface, while the gasification efficiency depends on the gas composition which is determined by the reservoir reaction conditions which affects production distribution. Another effect of paramount importance is the increase in reservoir production rate which was found to directly enhance both energy and gasification efficiency showing conditions where the both efficiencies are theoretically maximised. Results open new routes for techno-economic assessment of commercial implementation of underground gasification of hydrocarbons. © 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

AB - A new subsurface process model was developed using the ASPEN HYSYS simulation environment to analyse the process energy and gasification efficiency at steady-state equilibrium conditions. Injection and production wells were simulated using the HYSYS pipe flow utilities which makes use of the Beggs and Brill flow correlation applicable for vertical pipes. The downhole reservoir hydrothermal reactions were assumed to be in equilibrium, and hence, the Gibbs reactor was used. It was found that high W/C ratios and low O/C ratios are required to maximise gasification efficiency at a constant hydrocarbon feed flowrate, while the opposite is true for the energy efficiency. This occurs due to the dependence of process energy efficiency on the gas pressure and temperature at surface, while the gasification efficiency depends on the gas composition which is determined by the reservoir reaction conditions which affects production distribution. Another effect of paramount importance is the increase in reservoir production rate which was found to directly enhance both energy and gasification efficiency showing conditions where the both efficiencies are theoretically maximised. Results open new routes for techno-economic assessment of commercial implementation of underground gasification of hydrocarbons. © 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

UR - http://hdl.handle.net/10754/597340

UR - https://linkinghub.elsevier.com/retrieve/pii/S0360319914015985

UR - http://www.scopus.com/inward/record.url?scp=84905256294&partnerID=8YFLogxK

U2 - 10.1016/j.ijhydene.2014.05.182

DO - 10.1016/j.ijhydene.2014.05.182

M3 - Article

SN - 0360-3199

VL - 39

SP - 12648

EP - 12656

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 24

ER -

A new HYSYS model for underground gasification of hydrocarbons under hydrothermal conditions

Abstract

Bibliographical note

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this