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Static Strength Analysis of a Top-Tensioned Riser in the Gendalo–Gehem Oil and Gas Field

- Static Strength Analysis of a Top-Tensioned Riser in the Gendalo–Gehem Oil and Gas Field

Zona Laut Jurnal Inovasi Sains Dan Teknologi Kelautan · Vol. ume (2026) · pp. 134–142

DOI
10.62012/bgh27283
ISSN
2721-5717, 2747-2124
Published
2026-07-21
Publisher
Departemen Teknik Kelautan Universitas Hasanuddin
Language
en
License
creativecommons.org/licenses/by/4.0

Abstract

English

A Top-Tensioned Riser (TTR) is a key structural component that connects subsea facilities to floating production platforms and plays an essential role in ensuring production continuity in deepwater oil and gas exploitation systems. To maintain structural integrity, a TTR must satisfy the design requirements specified in API ST 2RD, particularly with respect to its ability to withstand hydrostatic pressure, internal fluid pressure, ocean current loads, and axial forces generated by top tension. This study aims to analyze the static strength of a TTR under deepwater conditions in the Gendalo–Gehem Field using a numerical approach based on the finite element method. The environmental loads considered include hydrostatic pressure at a water depth of 1,823 m, internal operating pressure, and hydrodynamic forces induced by ocean currents. The riser model was analyzed to determine stress distribution, deformation, and safety performance, which were then evaluated against the allowable stress limits defined in API ST 2RD. The analysis results indicate that the TTR exhibits a stable structural response, with the maximum stress remaining below the material yield strength. Although the maximum stress approaches the operational stress limit under conservative loading conditions, the riser still satisfies the ultimate limit state requirement. This study provides a preliminary basis for evaluating the feasibility of TTR design for deepwater operations in Indonesia and may serve as a reference for vertical riser design in floating production facilities.

Bahasa Indonesia

A Top-Tensioned Riser (TTR) is a key structural component that connects subsea facilities to floating production platforms and plays an essential role in ensuring production continuity in deepwater oil and gas exploitation systems. To maintain structural integrity, a TTR must satisfy the design requirements specified in API ST 2RD, particularly with respect to its ability to withstand hydrostatic pressure, internal fluid pressure, ocean current loads, and axial forces generated by top tension. This study aims to analyze the static strength of a TTR under deepwater conditions in the Gendalo–Gehem Field using a numerical approach based on the finite element method. The environmental loads considered include hydrostatic pressure at a water depth of 1,823 m, internal operating pressure, and hydrodynamic forces induced by ocean currents. The riser model was analyzed to determine stress distribution, deformation, and safety performance, which were then evaluated against the allowable stress limits defined in API ST 2RD. The analysis results indicate that the TTR exhibits a stable structural response, with the maximum stress remaining below the material yield strength. Although the maximum stress approaches the operational stress limit under conservative loading conditions, the riser still satisfies the ultimate limit state requirement. This study provides a preliminary basis for evaluating the feasibility of TTR design for deepwater operations in Indonesia and may serve as a reference for vertical riser design in floating production facilities.

Keywords

Collaboration network of the authors

27 authors · 63 co-authorship links

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Co-authorOrganisationJoint articles
Indah Melati SuciAffiliation unknown3
Firman HusainAffiliation unknown2
Indah MelatiAffiliation unknown1
Nur Fatima Dwi PutriAffiliation unknown1
AlamsyahAffiliation unknown1
Samsu Dlukha NurcholikAffiliation unknown1
MartinusAffiliation unknown1
Indah Melati SuciAffiliation unknown1
Rati AhmadAffiliation unknown1
Fitri RamadhaniAffiliation unknown1
Adriani PhadyAffiliation unknown1
Astika RajmiAffiliation unknown1
Muhammad Teguh Perdana AndalanAffiliation unknown1
Salsabila AskiAffiliation unknown1
Andi Muhammad Alfian ArafatAffiliation unknown1
Rian SagitaAffiliation unknown1
Alfred Michael PadaunanAffiliation unknown1
Daeng ParokaAffiliation unknown1
Imam IsmailAffiliation unknown1
Rakhmat Alghifari ArifAffiliation unknown1
Sitti Suhaeni Sarhani RahmanAffiliation unknown1
Arsa Aldani SaptarinaAffiliation unknown1

Affiliations come from OpenAlex; journal OAI-PMH metadata carries none. Authors without an OpenAlex ID are matched by name, which can merge or split people.

Metadata source: OAI-PMH (metadata jurnal) https://journal.unhas.ac.id/index.php/zonalaut/oai, first harvested 2 Nov 2026, last seen 2 Nov 2026.
Original metadata (oai_dc) 
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	<dc:title xml:lang="en">Static Strength Analysis of a Top-Tensioned Riser in the Gendalo–Gehem Oil and Gas Field</dc:title>
	<dc:title xml:lang="id">- Static Strength Analysis of a Top-Tensioned Riser in the Gendalo–Gehem Oil and Gas Field</dc:title>
	<dc:creator xml:lang="en">Ngurah Made Wirakusuma, I Gusti</dc:creator>
	<dc:creator xml:lang="id">Ngurah Made Wirakusuma, I Gusti</dc:creator>
	<dc:creator xml:lang="id">Yolanda, Eva</dc:creator>
	<dc:creator xml:lang="id">Isyah, Nura</dc:creator>
	<dc:creator xml:lang="id"> Al Ramadhani, Naya</dc:creator>
	<dc:creator xml:lang="id">Alie , Muhammad Zubair Muis</dc:creator>
	<dc:subject xml:lang="en"> Riser</dc:subject>
	<dc:subject xml:lang="en"> hydrostatic pressure</dc:subject>
	<dc:subject xml:lang="en"> stress</dc:subject>
	<dc:subject xml:lang="en"> structure</dc:subject>
	<dc:subject xml:lang="en">regulation</dc:subject>
	<dc:subject xml:lang="en">-</dc:subject>
	<dc:subject xml:lang="id">Riser; Hidrostatik; Tegangan; Struktur; Regulasi</dc:subject>
	<dc:subject xml:lang="id">Gerak Struktur</dc:subject>
	<dc:description xml:lang="en">A Top-Tensioned Riser (TTR) is a key structural component that connects subsea facilities to floating production platforms and plays an essential role in ensuring production continuity in deepwater oil and gas exploitation systems. To maintain structural integrity, a TTR must satisfy the design requirements specified in API ST 2RD, particularly with respect to its ability to withstand hydrostatic pressure, internal fluid pressure, ocean current loads, and axial forces generated by top tension. This study aims to analyze the static strength of a TTR under deepwater conditions in the Gendalo–Gehem Field using a numerical approach based on the finite element method. The environmental loads considered include hydrostatic pressure at a water depth of 1,823 m, internal operating pressure, and hydrodynamic forces induced by ocean currents. The riser model was analyzed to determine stress distribution, deformation, and safety performance, which were then evaluated against the allowable stress limits defined in API ST 2RD. The analysis results indicate that the TTR exhibits a stable structural response, with the maximum stress remaining below the material yield strength. Although the maximum stress approaches the operational stress limit under conservative loading conditions, the riser still satisfies the ultimate limit state requirement. This study provides a preliminary basis for evaluating the feasibility of TTR design for deepwater operations in Indonesia and may serve as a reference for vertical riser design in floating production facilities.</dc:description>
	<dc:description xml:lang="id">A Top-Tensioned Riser (TTR) is a key structural component that connects subsea facilities to floating production platforms and plays an essential role in ensuring production continuity in deepwater oil and gas exploitation systems. To maintain structural integrity, a TTR must satisfy the design requirements specified in API ST 2RD, particularly with respect to its ability to withstand hydrostatic pressure, internal fluid pressure, ocean current loads, and axial forces generated by top tension. This study aims to analyze the static strength of a TTR under deepwater conditions in the Gendalo–Gehem Field using a numerical approach based on the finite element method. The environmental loads considered include hydrostatic pressure at a water depth of 1,823 m, internal operating pressure, and hydrodynamic forces induced by ocean currents. The riser model was analyzed to determine stress distribution, deformation, and safety performance, which were then evaluated against the allowable stress limits defined in API ST 2RD. The analysis results indicate that the TTR exhibits a stable structural response, with the maximum stress remaining below the material yield strength. Although the maximum stress approaches the operational stress limit under conservative loading conditions, the riser still satisfies the ultimate limit state requirement. This study provides a preliminary basis for evaluating the feasibility of TTR design for deepwater operations in Indonesia and may serve as a reference for vertical riser design in floating production facilities.</dc:description>
	<dc:publisher xml:lang="en">Departemen Teknik Kelautan Universitas Hasanuddin</dc:publisher>
	<dc:date>2026-07-21</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://journal.unhas.ac.id/index.php/zonalaut/article/view/48329</dc:identifier>
	<dc:identifier>10.62012/bgh27283</dc:identifier>
	<dc:source xml:lang="en">Zona Laut Jurnal Inovasi Sains Dan Teknologi Kelautan; Volume 7, Issue 2, July 2026 Edition; 134-142</dc:source>
	<dc:source xml:lang="id">Zona Laut : Jurnal Inovasi Sains Dan Teknologi  Kelautan; Volume 7, Issue 2, July 2026 Edition; 134-142</dc:source>
	<dc:source>2721-5717</dc:source>
	<dc:source>2747-2124</dc:source>
	<dc:language>en</dc:language>
	<dc:language>id</dc:language>
	<dc:relation>https://journal.unhas.ac.id/index.php/zonalaut/article/view/48329/14709</dc:relation>
	<dc:rights xml:lang="en">Copyright (c) 2026 I Gusti Ngurah Made Wirakusuma, Eva Yolanda, Nura Isyah, Naya  Al Ramadhani, Muhammad Zubair Muis Alie </dc:rights>
	<dc:rights xml:lang="en">https://creativecommons.org/licenses/by/4.0</dc:rights>
</oai_dc:dc>