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Keywords: drilling riser
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Proceedings Papers

Paper presented at the The 34th International Ocean and Polar Engineering Conference, June 16–21, 2024
Paper Number: ISOPE-I-24-033
... operation. Heavy workover operation requires full-scale drilling rig, drilling riser, and subsea blowout preventers (BOP), and workover operation are long-time and high-cost (Sheng et al, 2017; Tian et al, 2022). Light workover, which is also known as riserless workover, does not need riser and has...
Proceedings Papers

Paper presented at the The 34th International Ocean and Polar Engineering Conference, June 16–21, 2024
Paper Number: ISOPE-I-24-084
... technique to solve narrow drilling mud density window problems in deepwater drilling. MPD riser joint, consisting of a RCD, an annular blowout preventer and a flow spool, is installed just below the outer barrel of the telescopic joint in the drilling riser column, as shown in Fig. 1. Under normal drilling...
Proceedings Papers

Paper presented at the The 34th International Ocean and Polar Engineering Conference, June 16–21, 2024
Paper Number: ISOPE-I-24-187
... for Deepwater Drilling Riser System in 3000m WD Jinlong Wang, Leixiang Sheng, Zhiming Yin, Mengbo Li, Deqiang Tian CNOOC Research Institute Ltd., Beijing, China. ABSTRACT Deepwater drilling riser system together constitute the channel connecting the drilling platform and underground reservoir, which plays...
Proceedings Papers

Paper presented at the The 34th International Ocean and Polar Engineering Conference, June 16–21, 2024
Paper Number: ISOPE-I-24-190
..., necessitating precise calculations. Taking into consideration environmental loads such as wind, waves, currents, platform tension, and lateral resistance of seabed soil beneath the mudline, we established mechanical control equations for the drilling riser system. These equations were solved using MATLAB...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-007
... based on the deepwater drilling riser auxiliary pipeline, a drilling platform with thermal energy conversion based on wellbore drilling fluid circulation, and an integrated device of seabed with thermal energy conversion and seabed drilling rig. The prospective and fundamental study on the innovative...
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-23-232
... the riser minimum clearances. The sensitivity analysis were further conducted, parameters including water depth, top tension and platform offset. The results showed that the most dangerous condition is the combination that the upstream is production riser and the downstream is drilling riser...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-180
... 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 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-22-192
... ABSTRACT As an alternative to overcome safety challenges associated with conventional drilling riser, freestanding drilling riser (FSDR) is disconnectable and the longer riser is left in freestanding mode. A comparative study of FSDR system from connected mode to freestanding mode to ensure...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-199
... on drilling riser is projected. The prospective and fundamental study on carbon neutrality deepwater drilling platform is of great reference and value for deepwater drilling engineering development in the background of global effort for carbon neutrality. INTRODUCTION As an emerging and important...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-3225
... Abstract Vortex–Induced Vibration (VIV) is an important problem that can be seen in offshore structures such as drilling riser. VIV occurred due to synchronization (lock–in) of the vortex shedding and natural frequency of the structure. The lock–in phenomenon is normally observed...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-375
... ABSTRACT In this study, a series of experiments were conducted in a wave/current flume to investigate the dynamic responses of a drilling riser for a jackup platform under the environmental loads and operating loads, which include wave, current, top tension and combined conditions. The strain...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-122
... ABSTRACT Offshore drilling and completing 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 is time consuming...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-134
... ABSTRACT Generally, the marine drilling riser is subjected to cyclic loads of wave-current in the working conditions. The fatigue damage, which is one of the challenges in riser design and operation, is of great significance to ensure the safety of the marine drilling riser. In this paper...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-681
.... It is found that some ultra-deep drilling risers and EU deep mining riser have axial modal response in the 4 to 7 second range. At this range a typical deep-water drillship will have little vessel response, thus the potential for axial resonance is minimal. As the practice in the industry for wave simulation...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-699
... ABSTRACT In this study, a series of experiments were conducted in a wave/current flume to investigate the dynamic responses of a drilling riser for a jackup platform under the environmental loads, mainly for waves and combined waves and current conditions. The riser is made of a PVC pipe...
Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-184
... the ISW and the risers is approximated by applying a current having the same velocity as the water particle velocity caused by the ISW. The results from this approach show a similar trend to those results from previous studies on drilling riser, indicating that this approach is credible for use...

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