Results 31 to 40 of about 115 (92)

System-level remaining useful life prediction methodology based on the dynamic health index of multi-indicator fusion: Two cases of subsea equipment

Journal of Ocean Engineering and Science
System-level remaining useful life (RUL) prediction is challenging because multisensor data fusion requires an integrated representation of multicomponent degradation, and the uncertainty of model parameters is often overlooked during prediction.
Xiaoyan Shao, Baoping Cai
doaj   +1 more source

Performance Identification Test Method for Tubing Hanger and Running Tool

Shiyou jixie, 2016
Performance identification test method for tubing hanger and running tool can guarantee product performance and reliability and it is of great significance on reducing the possibility of potential accidents.
Chen Meng, Zhang Laibin, Zheng Wenpei, Chai Yajun, Duan Menglan, Li Rong   +5 more
doaj  

Method for Calculating the Maximum Lowering Depth of Subsea Christmas Tree in the South China Sea

Shiyou jixie
Subsea Christmas tree is an integral component of subsea production system. It is installed at the top of subsea wellhead and connects the subsea wellhead to subsea manifold.
Wu Xudong, Chen Jianyi, Zeng Chunmin, Diao Huan, Ma Chuanhua, Wang Yingying, Wei Qi   +6 more
doaj  

Strength and Fatigue Assessment of the Coupled Riser–Landing String System for Deepwater Completion and Testing

Applied Sciences
During deepwater completion and testing, the platform and riser system are subjected to long-term motions induced by ocean currents, which may cause structural damage and potential failure of the landing string. This study investigates the mechanical and
Longgui Wei, Jin Yang, Shaochen Wang, Shaodong Ju, Nanding Hu   +4 more
doaj   +1 more source

A Hydrodynamic Model of the Subsea Christmas Trees in the Drill Pipes Retrieval Process at 2000-Meter Water Depth

Processes
Subsea Christmas trees serve as key technical equipment for subsea oil and gas development, as they regulate the flow of oil and gas at subsea wellheads. Most deep-water subsea Christmas trees deployed in China depend on imports, resulting in high procurement costs. Post-operation, these systems are typically hoisted and recovered using drill pipes and
Xudong Wu, Jianyi Chen, Ming Luo, Chunming Zeng, Heng Wang, Yingying Wang, Qi Wei   +6 more
openaire   +1 more source

Risk Analysis of Deepwater Horizontal Christmas Tree in Operating Mode

Shiyou jixie
Deepwater oil and gas production requires highly reliable Christmas tree systems.China has developed its first deepwater horizontal Christmas tree,and it is important to ensure this Christmas tree's safety in operating mode.In this paper,an improved ...
Ren Guanlong, Wang Yu, Meng Wenbo, Zhang Chong, Li Shuzhan   +4 more
doaj  

Inspection and maintenance of industrial infrastructure with autonomous underwater robots. [PDF]

Front Robot AI, 2023
Nauert F, Kampmann P.
europepmc   +1 more source

Current Status and Techniques of Equipment for Depressurization Exploitation of Marine Gas Hydrate

Shiyou jixie
The China Geological Survey has successfully implemented two natural gas hydrate production tests in the Shenhu sea area using depressurization method, achieving multiple major breakthroughs in drilling and production technologies of hydrate in deepwater
Wan Chunyan, Zhang He'en, Li Lei, Chen Caihu, Gao Yan, Di Jianwei, Zhu Yuxin   +6 more
doaj  

Analysis of the Generation of Natural Gas Hydrate in the Sleeve Valve of Subsea Christmas Tree

Shiyou jixie, 2015
Based on the natural gas hydrate formation temperature-pressure curve,natural gas hydrate formation in the sleeve valve of subsea tree systems has been analyzed by numerical simulation method.The biggest difference between the actual pressure in sleeve ...
胡飚, 朱宏武, 孔祥领, 张悠江, 徐芳玲, 吕慧琴   +5 more
doaj  

Digital transformation: a review on artificial intelligence techniques in drilling and production applications. [PDF]

Int J Adv Manuf Technol, 2022
D'Almeida AL, Bergiante NCR, de Souza Ferreira G, Leta FR, de Campos Lima CB, Lima GBA, Lima GBA.   +6 more
europepmc   +1 more source