... ABSTRACT An experimental study is conducted within a large-scale simulated deep-sea mining transport system and spiral flow generation system to shed some light on the multiphase FIV and the correlation with the dynamic behavior of the riser caused by the spiral flow. Experimental results show...

... ABSTRACT Deepwater medium workover system based on light engineering vessel can conduct conventional workover operation such as wire, cable, and coiled tubing operations, and has broad application prospects. A conceptual design for deepwater medium workover systems with workover riser based...

... pool; global performance; mooring system; Steel Catenary Riser. INTRODUCTION The Lingshui 17-2 project, as the first offshore field development in China, adopted the deep draft semi-submersible platform option as its floating system concept (named DeepSea No.1) with storage capability. This floater...

... completion installation and operations nodule well intervention rigid riser slurry riser proceedings mining concentration inertia diameter simulation production enhancement spike requirement downhole intervention efficiency calculation thirty-fourth pipe international ocean...

... ABSTRACT Managed pressure drilling (MPD) is an important technique to solve narrow drilling mud density window problems in deepwater drilling. The top end of the MPD riser is a Rotating Control Device (RCD), and the variation of its vertical position will directly affect the bottom hole...

... vessel is proposed. Three parts of the deepwater medium workover system: bottom assembly, workover riser, and lifting frame are introduced in detail in this paper. A global dynamic analysis model for deepwater workover riser system is established, and the global strength response results of workover...

... 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...

... Risers in Shallow-Water Subsea Production System Shuzhan Li 1, Jin Yang 1, Kun Jiang 1, Jiakang Wang 1, Chen Yu 2, Guojing Zhu 1, Renjun Xie 3, Gang Tong 3 1College of safety and ocean engineering, China University of Petroleum Beijing. Beijing, China 2Hainan Branch, CNOOC China Limited. Hainan, China...

... the Jack-up platform and subsea wellbore. Similar to drilling risers, the drilling conductor belong to top tensioned riser (TTR), which is provided by a split tensioner system for the top tension to improve the stress state of the conductor. Therefore, when constructing the mechanical model, the combined...

... ABSTRACT Due to the complex marine environment loads, large horizontal deflection of marine risers, and contact and collision between risers and internal pipe strings will occur during drilling string installation and drilling process, resulting in drilling string wear and deformation, which...

... ABSTRACT For deep-water oil and gas exploration and development, sometimes the production and drilling operations would be carried out simultaneously to reduce the costs. At this time, the flow field interference between adjacent drilling riser and production riser which are of different sizes...

... Assessment of Steel Catenary Riser Based on Dynamic Bayesian Networks Xueying Changa,b Zhengwei Zhanga,b, Yang Yuc, Jingyi Wuc, Qun Caoa,b a. China Ship Scientific Research Center, Wuxi, China b. Taihu Laboratory of Deepsea Technology Science, Wuxi, China c. State Key Laboratory of Hydraulic Engineering...

... ABSTRACT Technical challenges of the Steel Lazy Wave Risers (SLWRs) during wet parking phases are investigated in this paper, as part of the engineering study effort for lazy-wave riser design. Assessment of pre-laid tension requirement are carried out in this study. The in-plane riser vortex...

... ABSTRACT Gimbal Joint Riser (GJR) is a new technology under development pursuing the enablement of Steel Catenary Riser (SCR) configurations in harsh environment conditions. It acts as an articulation, protecting the Touchdown Zone (TDZ) from vessel motions. The aim of this paper is to present...

... of composite flexible riser subjected to torsion and thermomechanical loading Rui Bao1, Junpeng Liu1, Zhongmin Xiao2 1 China University of Petroleum, College of Safety and Ocean Engineering, Beijing, China 2 Nanyang Technological University of Mechanical and Aerospace Engineering, Singapore ABSTRACT Marine...

... applications commenced decades ago, driven by the burgeoning interest in exploiting deep-water oil reserves. A substantial body of research on composite risers in deep-water conditions has explored diverse facets such as manufacturing techniques, experimental inquiries, and numerical analyses (Wang and Fitting...

... ABSTRACT Vortex-Induced Vibrations (VIV) is a nonlinear fluid-structure interaction (FSI) phenomenon observed when a marine riser or pipeline is placed in sea currents. During VIV, the trajectory of a given cross-section of the riser is highly complicated, e.g., never repeats itself, making...

... Arrangements for Rigid Risers: A Study in The Brazilian Ultra-Deepwater Field Diego Garcia Barroso, Felipe Oliveira Ribeiro, Mohammad Mobasheramini Subsea7 - Rio de Janeiro, Rio de Janeiro, Brazil ABSTRACT Vortex-Induced Vibrations (VIV) fatigue damage due to currents loads has become a challenge for ultra...

... recent VIV studies focus on the vibration features of risers and submarine cables under steady flow. By using the wake oscillator model, Kumar et al. (2022) investigated the crossflow VIV responses of a tensioned cable subjected to the sheared flow. The laboratory experiments on the VIV of a free...

... ABSTRACT Deepwater drilling riser is indispensable and important for oil and gas development in deepwater arears. It is the only well-hole in seawater connecting subsea wellhead and floating platform, which safe and efficient operation is significant to reliable of deepwater drilling...