Development of a jet trenching model in sand

Berghe, J.-F. Vanden; Pyrah, Jim; Capart, S. Gooding H.

doi:10.1201/b10132-135

Cited by 2 publications

(1 citation statement)

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“…This approach has experienced increasing acceptance in recent years for prediction of ultimate limit states for shallow foundations under general loading. An annex on the failure envelope approach was included in the recent API RP 2Geo (issued for ballot in 2010), which covers geotechnical design for both shallow and pile foundations (Jeanjean et al, 2010).…”

Section: Site Investigation Techniquesmentioning

confidence: 99%

Recent advances in offshore geotechnics for deep water oil and gas developments

et al. 2011

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The paper presents an overview of recent developments in geotechnical analysis and design associated with oil and gas developments in deep water. Typically the seabed in deep water comprises soft, lightly overconsolidated, fine grained sediments, which must support a variety of infrastructure placed on the seabed or anchored to it. A particular challenge is often the mobility of the infrastructure either during installation or during operation, and the consequent disturbance and healing of the seabed soil, leading to changes in seabed topography and strength. Novel aspects of geotechnical engineering for offshore facilities in these conditions are reviewed, including: new equipment and techniques to characterise the seabed; yield function approaches to evaluate the capacity of shallow skirted foundations; novel anchoring systems for moored floating facilities; pipeline and steel catenary riser interaction with the seabed; and submarine slides and their impact on infrastructure. Example results from sophisticated physical and numerical modelling are presented.

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Section: Site Investigation Techniquesmentioning

confidence: 99%

Recent advances in offshore geotechnics for deep water oil and gas developments

et al. 2011

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Study on Performance Evaluation of Subsea Waterjet Trenching Machine Using Water Tank

Na¹,

Jo²,

Dong-Il

et al. 2015

Journal of Ocean Engineering and Technology

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ABSTRACT:The demand for subsea cables and pipelines that transfer marine energy resources onshore has recently increased. Laying these underground after trenching is one engineering method to stabilize exposed subsea cables and pipelines. This experimental study found the optimum conditions for operating two types of waterjet arms mounted on an ROV trencher. A waterjet arm for trenching the seabed was scaled down at a ratio of 1:6, and a comparative analysis was conducted using diverse parameters. The results of this research provide a practical fundamental database to assist in making decisions about the ROV trencher performance in advance.

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Development of a jet trenching model in sand

Cited by 2 publications

References 1 publication

Recent advances in offshore geotechnics for deep water oil and gas developments

Recent advances in offshore geotechnics for deep water oil and gas developments

Study on Performance Evaluation of Subsea Waterjet Trenching Machine Using Water Tank

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