Lifetime Extension of Flexible Risers: A Generic Case Study

Leira, Bernt J.; Berge, Stig; Løtveit, Svein-Are; Fergestad, Dag; Langhelle, Nina

doi:10.4043/25931-ms

Cited by 6 publications

(5 citation statements)

References 3 publications

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“…A case study involving fire water pump life extension was used to validate the model. Leira et al (2015) outlined the processes involved in qualifying flexible risers for extended operation. A case study involving specific riser configuration was used for purpose of illustration.…”

Section: Life Extensionmentioning

confidence: 99%

Decommissioning of deep and ultra-deep water oil and gas pipelines: issues and challenges

Koroma

Animah

Shafiee

et al. 2019

IJOGCT

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In the offshore oil and gas industry, when production facilities reach the end of their economic life, field owners need to decide whether to replace, extend the life of, or decommission assets. Although life extension is a popular choice among end-of-life (EOL) management strategies, decommissioning of assets is inevitable. The decommissioning of deep and ultra-deep water pipelines used for the transport of oil and gas products has become a serious issue in recent years because it is a complex process and presents challenges to stakeholders. The current paper presents the experiences of pipeline decommissioning in different regions of the world, and then highlights issues and challenges related to decommission of pipelines in deep and ultra-deep waters. These issues and challenges can be broadly categorised into technical, financial or economic, health and safety legislation, environmental, and human or organizational aspects. Technical challenges are associated with the selection of appropriate decommissioning procedures for handling hazardous pipelines. Asset managers are also under pressure to reduce the costs associated with pipeline decommissioning operation as it involves huge financial commitments to companies. The decommissioning of deep and ultra-deep water pipelines may involve dangerous activities, which could adversely affect the immediate environment; therefore, asset managers must ensure that the impact of decommissioning processes on the environment is minimized. Human resource issues, such as lack of requisite skills, knowledge and experience about deep and ultra-deep water pipelines decommissioning, as well as their safety, are another challenge. In order to address the challenges identified in the study, some directions for future research are suggested.

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Section: Life Extensionmentioning

confidence: 99%

Decommissioning of deep and ultra-deep water oil and gas pipelines: issues and challenges

Koroma

Animah

Shafiee

et al. 2019

IJOGCT

View full text Add to dashboard Cite

show abstract

“…Flexible pipes are vital to subsea developments worldwide and for Norwegian oil and gas production facilities since 1986 [4]. The installation phase for a flexible pipe includes complicated steps, which needs detailed analysis to understand installation limitations [5].…”

Section: Related Workmentioning

confidence: 99%

Flexible Riser Installation Optimisation Based on Virtual Prototyping

Major¹,

Yuan²,

Zhang³

et al. 2019

OCEANS 2019 - Marseille

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Flexible riser installations or replacements are operations which need to be accurately planned and trained for. Virtual prototyping (VP) allows engineers to interact with simulation tools in real time (RT) during the planning phase, thereby finding optimal solutions and enhancing operational procedures in terms of safety and speed. Literature research has found scarce publication of simulation of flexible riser installation operations. This study compares the outcomes of a RT VP with a benchmark based on the finite element method. The approach presented throughout this paper can provide some suggestions with respect to the installation of a flexible pipe in practical engineering.

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“…They also demonstrated through a case study that flexible pipe's life-span can be extended beyond their original design life with using proper integrity management systems. Leira et al [95] discussed the procedures involved in qualifying oil and gas flexible risers for M A N U S C R I P T…”

Section: -Oil and Gasmentioning

confidence: 99%

Life extension decision making of safety critical systems: An overview

Shafiee

Animah

2017

Journal of Loss Prevention in the Process Industries

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In recent years, the concept of "asset life extension" has become increasingly important to safety critical industries including nuclear power, offshore oil and gas, petrochemical, renewable energy, rail transport, aviation, shipping, electricity distribution and transmission, etc. Extending the service life of industrial assets can offer a broad range of economic, technical, social and environmental benefits as compared to other end-of-life management strategies such as decommissioning and replacement of equipment. The aim of this paper is to present a comprehensive literature review and classification framework for academic research and industrial practices related to life extension of safety critical systems and installations. To achieve this, a systematic review is performed on the current state-of-the-art and new developments in the field of asset life extension in various industries. Major sources from which the literature can be gathered are identified and some assessment criteria are defined to categorize the selected publications. A classification framework is then proposed to support life extension decision making process with respect to the type of asset and industry sectors where the concept of life extension has been of interest, condition assessment techniques used for qualification of assets for life extension, life prediction models, life extension strategies, etc. The current key issues in relation to the subject are outlined and the strengths and weaknesses of existing life extension decision-making tools are highlighted. This review contains an exhaustive list of scientific references on the topic, including articles published in journals, industry magazines, books and conference proceedings, university dissertations, technical reports and government documents. The proposed literature classification and analysis can help asset owners, asset managers, service providers, stakeholders, public policy-makers, environment protection authorities, and regulatory bodies gain valuable insights on asset life extension decision-making procedures and methodologies.

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Lifetime Extension of Flexible Risers: A Generic Case Study

Cited by 6 publications

References 3 publications

Decommissioning of deep and ultra-deep water oil and gas pipelines: issues and challenges

Decommissioning of deep and ultra-deep water oil and gas pipelines: issues and challenges

Flexible Riser Installation Optimisation Based on Virtual Prototyping

Life extension decision making of safety critical systems: An overview

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