Safety analysis and experimental research on the limit state of subsea pipeline by reel-lay method
Source abstract
Abstract
As the development of offshore oil and gas resources extends into deep sea, the reel-lay method was invented. During the entire process of reeling and unreeling in the reel-lay method, the pipeline undergoes several bends and experiences significant plastic deformation, which may lead to potential failure of the pipeline. To ensure the safety of subsea pipelines laid by the reel-lay method, this paper analyzes failure modes during reel laying and examines the limit states under combined loads. A model is developed using elasto-plastic theory to assess the pipeline’s ultimate bearing and strain capacities during the reeling and unreeling processes. Based on this model, a reel-lay system for 6-in. steel pipes was designed and tested in the Bohai Sea. The results, with average ellipticity at 1.215% and straightness at 0.0014 m, confirm the design’s validity and the accuracy of the proposed analysis method. This study proposes a criterion for ensuring the safety of pipelines during the reel-laying process, which can better guide the design of reel-laying equipment and operational safety.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Structural Integrity and Reliability Analysis · Geotechnical Engineering and Underground Structures · Engineering Structural Analysis Methods
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Guangdong Mechanical and Electrical Polytechnic 1 , Guangzhou 510515,
Guangxi Key Laboratory of Special Engineering Equipment and Control, Guilin University of Aerospace Technology 2 , Guilin 541004,
Wuhan Institute of Shipbuilding Technology 3 , Wuhan 430212,
Guangzhou Institute of Blue Energy 4 , Guangzhou 510555,
Funding
Guangdong provincial department of education youth innovation talent program · High level talents project of guangdong mechanical and electrical polytechnic · Campus level teaching and research projects of guangdong mechanical an electrical polytechinc · Project of educational commission of guangdong province of China · The basic ability enhancement program for young and middle-aged teachers of guangxi · Education scientific planning project of hubei provincial department of education · Hubei provincial depart of education research · China university industry university research innovation fund Aiwa technology innovation education special project
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