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Keywords: riser
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Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-231
... ABSTRACT This paper performs series of parametric analysis, validated with Abaqus simulation, to establish optimum condition for deepwater drilling riser survivability in freestanding mode. Twelve parametric case studies are carried out on influencing parameters such as buoyancy can upthrust...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-232
... ABSTRACT An oil field X in South China Sea was considering using TLP, which was the first time in China. The interference of TLP drilling and production risers may result in fatigue damage and even diffusion. Based on local conditions, an optimized finite element method was used to analyse...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-224
... ABSTRACT Newly built shallow water platforms are fabricated and installed with risers on the inside of the jacket structure to protect them from external impacts. However, it is often necessary to retrofit new risers, either for unanticipated project extensions or to replace existing risers...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-382
... ABSTRACT We show how to reconstruct the vortex-induced vibrations of a riser from experimental strain measurements using a machine learning framework. We employ a modal decomposition technique followed by inference of the expansion modes using a two-stage optimization routine. A stochastic...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-429
... ABSTRACT The girth weld of SCR riser is easy to occur fatigue failure than the base material in complex marine environments, so it is necessary to research it separately. In this paper, we provide the details of time-domain loads at girth weld on SCR riser, then analysis the fatigue life...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-384
... ABSTRACT Vortex-induced vibration of marine risers has been extensively studied due to its importance in offshore engineering. The van der Pol nonlinear wake oscillator has been widely used to model the fluid-structure interaction between the oscillating riser and the time-varying hydrodynamic...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-225
... ABSTRACT Deepwater drilling riser is the key technology equipment in deepwater drilling, and its safe and reliable operation is related to the success and economy of deepwater drilling operations. Under certain operating conditions, the riser will be in hang-off mode. Ensuring the safety...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-227
... ABSTRACT Offshore drilling activates have been significantly impacted by severe weather conditions as oil and gas development has moved into deeper water. Under the situation of imminent arrival of a typhoon, emergency retrieval of the whole drilling riser string is time consuming and tedious...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-226
... ABSTRACT Several studies have incorporated the trench effect into the SCR's fatigue analysis based on the two main approaches: artificial insertion of a trench profile in the TDZ, and automated trench formation using non-linear hysteretic riser-seabed interaction models. There have been...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-229
... slug catcher reservoir surveillance real time system upstream oil & gas riser lazy-wave riser united states government production monitoring steel lazy-wave riser downcomer gas blowout interaction abaqus slug length simulation production logging production control severe...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-006
... asia government riser united states government north america government upstream oil & gas sludge height platform oscillation period rotational stiffness flexible joint lower flexible joint subsea wellhead completion installation and operations china government wave period...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-005
... monitoring is prone to lag and inaccuracies, resulting in poor quality data sample sets. For example, in the case of LW22-1-1 , the deepest ultra-deepwater well in the Pacific with a water depth of 2616.30m, the use of 21-inch (outside diameter) risers results in a volume of 530.28m 3 . This leads...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-009
... of shallow-water subsea wellhead system should be the primary concern in this new mode. Three separate well configuration stages, namely as drilling with 30" riser, drilling with 20" high pressure riser and completion, are analyzed. Assessments include axial capacity, strength, wave fatigue and VIV fatigue...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-151
... lines on the up-wave side and close to the broken position would exhibit profoundly increasing tension range. The riser tension is less affected by mooring failure due to its vertical configuration and low tension level compared to mooring tension. INTRODUCTION A typical floating offshore system...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-187
... upstream oil & gas installation winch offshore pipeline chain jack riser load test scr rps pull-in wire installation procedure pull-in system topside subsea system south rps winch wire pull head operation semi scr pull-in system pull-in chain scr pull head...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-188
... ABSTRACT During hang-off or transit operation, the monitoring systems is an important measure to keep the integrity and safety for drilling riser. The risers’ dynamic response prediction based on measured acceleration date from limited acceleration loggers is a technology challenge...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-178
... ABSTRACT Strong shear flows can be induced by the internal solitary wave (ISW), which plays a considerable role in the dynamic responses of steel catenary risers (SCRs). A three-dimensional program of SCRs is established using the slender rod theory. ISW effects are simulated by the extended...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-198
... production logging production monitoring vibration upstream oil & gas flow characteristic dynamic response artificial intelligence production control pipeline-riser system correlation coefficient spatial-temporal evolution slug catcher reservoir surveillance frequency amplitude...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-214
... ABSTRACT Many offshore structures contain elements with cylindrical shape, such as jacket, jack up and tension-leg platforms, marine pipelines and offshore drilling and production risers, etc. Considerable efforts have been made in recent years on developing the theoretical wake model...

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