Exergetic assessment of energy systems on North Sea oil and gas platforms

Tuong-Van Nguyen, Leonardo Pierobon, Brian Elmegaard, Fredrik Haglind, Peter Breuhaus, Mari Voldsund

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Abstract

Oil and gas platforms in the North Sea region are associated with high power consumption and large CO2-emissions, as the processing and utility plants suffer from significant changes in production rates and performance losses over the field lifespan. In this paper, a generic model of the overall offshore system is described: its thermodynamic performance is assessed by performing an exergy accounting and rules of thumb for oil and gas platforms are derived. Simulations are built and conducted with the tools Aspen Plus_, Dynamic Network Analysis and Aspen HYSYS_. 62e65% of the total exergy destruction of an offshore platform is attributable to the power generation and waste heat recovery system, and 35 e38% to the oil and gas processing. The variability of the feed composition has little effect on the split of the thermodynamic irreversibilities between both plants. The rejection of high-temperature gases from the utility and flaring systems is the major contributor to the exergy losses. These findings suggest to focus efforts on a better use of the waste heat contained in the exhaust gases and on the ways in which the gas compression performance can be improved.
© 2013 Elsevier Ltd. All rights reserved.
Original languageEnglish
JournalEnergy
Volume62
Pages (from-to)23-36
ISSN0360-5442
DOIs
Publication statusPublished - 2013

Keywords

  • Energy systems
  • Exergy analysis
  • Oil and gas platforms

Cite this

Nguyen, Tuong-Van ; Pierobon, Leonardo ; Elmegaard, Brian ; Haglind, Fredrik ; Breuhaus, Peter ; Voldsund, Mari. / Exergetic assessment of energy systems on North Sea oil and gas platforms. In: Energy. 2013 ; Vol. 62. pp. 23-36.
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abstract = "Oil and gas platforms in the North Sea region are associated with high power consumption and large CO2-emissions, as the processing and utility plants suffer from significant changes in production rates and performance losses over the field lifespan. In this paper, a generic model of the overall offshore system is described: its thermodynamic performance is assessed by performing an exergy accounting and rules of thumb for oil and gas platforms are derived. Simulations are built and conducted with the tools Aspen Plus_, Dynamic Network Analysis and Aspen HYSYS_. 62e65{\%} of the total exergy destruction of an offshore platform is attributable to the power generation and waste heat recovery system, and 35 e38{\%} to the oil and gas processing. The variability of the feed composition has little effect on the split of the thermodynamic irreversibilities between both plants. The rejection of high-temperature gases from the utility and flaring systems is the major contributor to the exergy losses. These findings suggest to focus efforts on a better use of the waste heat contained in the exhaust gases and on the ways in which the gas compression performance can be improved.{\circledC} 2013 Elsevier Ltd. All rights reserved.",
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year = "2013",
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Exergetic assessment of energy systems on North Sea oil and gas platforms. / Nguyen, Tuong-Van; Pierobon, Leonardo; Elmegaard, Brian; Haglind, Fredrik; Breuhaus, Peter; Voldsund, Mari.

In: Energy, Vol. 62, 2013, p. 23-36.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Exergetic assessment of energy systems on North Sea oil and gas platforms

AU - Nguyen, Tuong-Van

AU - Pierobon, Leonardo

AU - Elmegaard, Brian

AU - Haglind, Fredrik

AU - Breuhaus, Peter

AU - Voldsund, Mari

PY - 2013

Y1 - 2013

N2 - Oil and gas platforms in the North Sea region are associated with high power consumption and large CO2-emissions, as the processing and utility plants suffer from significant changes in production rates and performance losses over the field lifespan. In this paper, a generic model of the overall offshore system is described: its thermodynamic performance is assessed by performing an exergy accounting and rules of thumb for oil and gas platforms are derived. Simulations are built and conducted with the tools Aspen Plus_, Dynamic Network Analysis and Aspen HYSYS_. 62e65% of the total exergy destruction of an offshore platform is attributable to the power generation and waste heat recovery system, and 35 e38% to the oil and gas processing. The variability of the feed composition has little effect on the split of the thermodynamic irreversibilities between both plants. The rejection of high-temperature gases from the utility and flaring systems is the major contributor to the exergy losses. These findings suggest to focus efforts on a better use of the waste heat contained in the exhaust gases and on the ways in which the gas compression performance can be improved.© 2013 Elsevier Ltd. All rights reserved.

AB - Oil and gas platforms in the North Sea region are associated with high power consumption and large CO2-emissions, as the processing and utility plants suffer from significant changes in production rates and performance losses over the field lifespan. In this paper, a generic model of the overall offshore system is described: its thermodynamic performance is assessed by performing an exergy accounting and rules of thumb for oil and gas platforms are derived. Simulations are built and conducted with the tools Aspen Plus_, Dynamic Network Analysis and Aspen HYSYS_. 62e65% of the total exergy destruction of an offshore platform is attributable to the power generation and waste heat recovery system, and 35 e38% to the oil and gas processing. The variability of the feed composition has little effect on the split of the thermodynamic irreversibilities between both plants. The rejection of high-temperature gases from the utility and flaring systems is the major contributor to the exergy losses. These findings suggest to focus efforts on a better use of the waste heat contained in the exhaust gases and on the ways in which the gas compression performance can be improved.© 2013 Elsevier Ltd. All rights reserved.

KW - Energy systems

KW - Exergy analysis

KW - Oil and gas platforms

U2 - 10.1016/j.energy.2013.03.011

DO - 10.1016/j.energy.2013.03.011

M3 - Journal article

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JO - Energy

JF - Energy

SN - 0360-5442

ER -