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Keywords: riser system
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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-23-225
... of deepwater drilling riser. INTRODUCTION The riser system between the wellhead and the drilling platform is the weak link in the whole offshore drilling system. With the development of offshore drilling to deepwater and ultra-deepwater areas, risers are exposed to a variety of complex external loads...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-227
.... A specialized soft hang-off system to improve the adaptability of the drilling riser system under hang-off operations is developed to solve the low-efficiency and time limitation for retrieval all drilling riser joints during in extreme storm environment. By using the hang-off joint and hydraulic compensation...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-1121
.... In a internal solitary wave is especially considered. The hysteresis effect is normal offshore drilling process, the floating rig suffers environment discussed and studied quantitatively by this paper. Some key findings loads from current, wind and waves. The drilling riser system is and suggestions...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-1115
... and Riser Systems for Deep and Ultra-deep Water for East Coast of India Ove T. Gudmestad Department of Mechanical and Structural Engineering and Materials Science, University of Stavanger Stavanger, Norway Daniel N. Karunakaran Department of Mechanical and Structural Engineering and Materials Science...
Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-735
... installation weather window loading deepsea mining riser system deployment mining riser system fatigue damage riser system lateral deflection riser boundary condition dynamic response weather window Dynamic Response of a Deepsea Mining Riser Ting Ting Li, Frank Lim, Yong Sha and Hui Zhang 2H...
Proceedings Papers

Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-447
... of a riser system can be maintained for more time by early-warning and pre-deviate the platform. INTRODUCTION In the South China Sea(SCS), a large amount of oil and gas resources has been successfully explored during the last three decades. However, the sea state in the SCS is very harsh because of some...
Proceedings Papers

Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-308
... Weak Point and Operation Analysis of Deepwater Drilling Riser System in Typhoon Condition Xiuquan Liu, Guoming Chen, Yuanjiang Chang, Jingjie Fu, Jingqi Ji Centre for Offshore Engineering and Safety Technology, China University of Petroleum. Qingdao, Shandong, China ABSTRACT Typhoon is a key...
Proceedings Papers

Paper presented at the The 26th International Ocean and Polar Engineering Conference, June 26–July 2, 2016
Paper Number: ISOPE-I-16-257
..., 2008; BOTTO etc, 2010). detection module fatigue damage assessment information riser monitor data real time system drilling riser riser system deepwater drilling riser integrity probe array system assessment displacement monitor system vibration upstream oil & gas integrity...
Proceedings Papers

Paper presented at the The 26th International Ocean and Polar Engineering Conference, June 26–July 2, 2016
Paper Number: ISOPE-I-16-062
... fpso effective tension flexible riser riser system maximum effective tension configuration load case buoyancy module screening result max curvature environmental condition curvature riser coefficient dynamic analysis water depth damage condition load case effective tension...
Proceedings Papers

Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, June 21–26, 2015
Paper Number: ISOPE-I-15-627
... of the welded connections due to fatigue damage accumulation. To date, the focus for riser systems has predominantly been on determining the fatigue damage due to VIV and since VIV and its effects on structural response in practice are considered a not well-understood phenomenon. The so called "measured...
Proceedings Papers

Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, June 21–26, 2015
Paper Number: ISOPE-I-15-712
... higher computational efficiency. sensitivity study riser system environmental random variable engineering sea state limit state time domain machine learning normal distribution basic support point fatigue assessment random variable subsea system riser flexible riser fatigue damage...
Proceedings Papers

Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, June 21–26, 2015
Paper Number: ISOPE-I-15-528
... be executed because the effect of raising the float force will be offset by an increasing weight of the dynamic positioning (DP) equipment, which need to increase the power of DP to adapt increased volume of the pontoon. A new ultra-deepwater rig could be matched by the free-standing riser system, which...
Proceedings Papers

Paper presented at the The Twenty-fourth International Ocean and Polar Engineering Conference, June 15–20, 2014
Paper Number: ISOPE-I-14-221
.... The feasibility of TLP application in the development of oil and gas field in the South China Sea needs to be demonstrated because of the soliton condition in South China Sea, which is different from other areas such as Gulf of Mexico. Top-Tensioned riser systems is a critical part of TLP system, so...
Proceedings Papers

Paper presented at the The Twenty-fourth International Ocean and Polar Engineering Conference, June 15–20, 2014
Paper Number: ISOPE-I-14-200
... analysis of the riser system is illustrated step by step. This study particularly looks at how different cycle counting methods affect the fatigue damage estimate obtained with the S-N approach, strain-life approach and fatigue crack growth approach. In the study Rainflow and Simple Range cycle counting...
Proceedings Papers

Paper presented at the The Twenty-fourth International Ocean and Polar Engineering Conference, June 15–20, 2014
Paper Number: ISOPE-I-14-112
... standard. american society requirement subsea pipeline terminal product flexible riser south china sea sdrb process bulkhead riser system pipeline stress analysis upstream oil & gas subsea product load combination mechanical engineer riser base A Study on Piping Stress Analysis...
Proceedings Papers

Paper presented at the The Twenty-third International Offshore and Polar Engineering Conference, June 30–July 5, 2013
Paper Number: ISOPE-I-13-300
... ABSTRACT This paper provides a mathematical model for accurate and efficient calculation of the elongation of each string within a pipe-in-pipe top tensioned riser system due to gravity, pressure and thermal expansions. The resulting riser system elongation effect is subsequently derived...
Proceedings Papers

Paper presented at the The Twenty-third International Offshore and Polar Engineering Conference, June 30–July 5, 2013
Paper Number: ISOPE-I-13-311
.... This expanded frame work, referred to as Nonlinear Dynamic Substructuring (NDS), allows the computationally efficient nonlinear dynamic analysis of flexible riser systems, with detailed models, capturing the impact of both nonlinearities on riser dynamic behaviour. Furthermore, the methodology provides...
Proceedings Papers

Paper presented at the The Twenty-third International Offshore and Polar Engineering Conference, June 30–July 5, 2013
Paper Number: ISOPE-I-13-293
... models and measured loads. Only steps relevant for reducing the conservatism in the global riser analyses are considered. Two main effects are studied: damping in the riser system and wave directionality. The results show that both damping and directional spreading of the waves play a significant role...
Proceedings Papers

Paper presented at the The Twenty-third International Offshore and Polar Engineering Conference, June 30–July 5, 2013
Paper Number: ISOPE-I-13-376
..., the buoyancy can layout and VIM methodology for a single buoyancy can FSHR were described. Based on that, the methodology for dual buoyancy can FSHR was derived. The riser system global resonance modes and buoyancy can system local resonance modes were also calculated, and the relationship between...
Proceedings Papers

Paper presented at the The Twenty-second International Offshore and Polar Engineering Conference, June 17–22, 2012
Paper Number: ISOPE-I-12-275
... was employed to determine the drag force and hence the drag coefficients (Cd) in cross-sections of the riser system at three critical locations. The predicted Cd values based on 2-dimensional unsteady water flow were compared with the published experimental data and good agreement was observed. This enables...

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