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Keywords: spudcan penetration
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Proceedings Papers

Paper presented at the The 34th International Ocean and Polar Engineering Conference, June 16–21, 2024
Paper Number: ISOPE-I-24-018
... This research uses the Euler-Lagrange coupling method to simulate spudcan penetration on jack-up rigs. It analyzes soil deformation and spudcan bearing capacity variations with depth. A three dimension(3D) finite element model is created based on geological data and spudcan shape to study the spudcan-soil...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-581
... in the ultimate bearing capacity occurs when a spudcan penetrates vertically through a soft clay layer towards a sand layer. This is because the softer soil that is trapped beneath the spudcan base starts to be squeezed horizontally as the vertical load begins to be borne by the stronger underlying sand layer...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-324
... than two layers, Hossain (2014) conducted centrifuge model tests for spudcan penetrating through multi-layer deposits with interbedded stronger layers of various consolidation characteristics and mineralogy. The results indicate that the downward soil deformation could extend into one more underlying...
Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-639
...–1, 2012) states that issues associated with positioning of spudcan on a hard sloping stratum shall be carefully considered. However, only few studies have been done on spudcan penetration resistance on a sloping seabed. This study aims to evaluate the spudcan penetration resistance on a sloping...
Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-197
... ABSTRACT The spudcan will be penetrated into the sea bed to supply enough bearing capacity when a mobile jack-up operates near jacket platforms. Additional moments and shear forces along piles will be resulted from spudcan penetration and extraction. In order to understand effect of spudcan...
Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-306
... bearing capacity after spudcan penetration and extraction are compared with that before. Studies has shown that the grid size of 0.25d (d is pile diameter) and pile loading speed at 5cm/s can calculate pile vertical bearing capacity accurately. The finite element calculation results of pile bending moment...
Proceedings Papers

Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-096
..., spudcan penetration and submarine soil properties, etc. many kinds of loading conditions will appear for spudcan pulling operation, such as pulling the deepest penetration leg first, pulling all the legs at the same time, etc. Take a 3- leg jack-up platform for example, the typical loading condition...
Proceedings Papers

Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-273
... ABSTRACT The spudcan will be penetrated into the sea bed to supply enough bearing capacity when a mobile jackup operates near the jacket platform. The effects of the spudcan penetration on the pile foundation of the platform should be assessed if the distance between the spudcan and the pile...
Proceedings Papers

Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, June 21–26, 2015
Paper Number: ISOPE-I-15-560
... penetration jacket platform subsea system ultimate status spudcan penetration Numerical Study of Spudcan Penetration Induced Loading on an Adjacent Jacket Pile in Soft Clays Ya Li*, Yangrui Zhou Jinghua Tao*, Chao Zhang* * CNOOC Research Institute, Beijing China, ** China Oilfield Services Limited...
Proceedings Papers

Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, June 21–26, 2015
Paper Number: ISOPE-I-15-803
... Abstract This paper addresses spudcan penetration in stiff-over-soft clay, the reverse and multilayer deposits. Centrifuge model tests and large deformation finite element (LDFE) analyses were undertaken to provide insight into spudcan foundation behavior during vertical penetration through...
Proceedings Papers

Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, June 21–26, 2015
Paper Number: ISOPE-I-15-866
.... An axisymmetric model with layered seabed is established according to ZUOYE-5 jack-up. And the seabed is simulated with the Mohr-Coulomb elastoplasticity constitutive model. The ALE method can accurately simulate the large deformation of spudcan penetration, the ultimate bearing capacity of foundation...
Proceedings Papers

Paper presented at the The Twenty-fourth International Ocean and Polar Engineering Conference, June 15–20, 2014
Paper Number: ISOPE-I-14-294
... installation vessel numerical investigation spudcan penetration sand plug spigot bearing capacity failure mechanism sand layer Numerical Investigation of Bearing Capacity of Spudcan on Sand overlying Clay Jun Zhao1,2, Beom Seon Jang1*, Haibin Jin1, Menglan Duan2 1. *Department Department of Naval...
Proceedings Papers

Paper presented at the The Twenty-fourth International Ocean and Polar Engineering Conference, June 15–20, 2014
Paper Number: ISOPE-I-14-190
... of the rigs and to reduce the risks of instability arising from causes such as scouring, leg punch-through, etc., adequate spudcan penetration into the soil is required. Deep penetration of the spudcan causes large soil deformation. If the spudcan is close to any existing structures, the penetration may cause...
Proceedings Papers

Paper presented at the The Twenty-third International Offshore and Polar Engineering Conference, June 30–July 5, 2013
Paper Number: ISOPE-I-13-241
... ABSTRACT Jack-up operating in emerging oil and gas provinces is difficult due to the prevalence of highly stratified soil conditions. A recent patent, describing a new penetrometer tool built in the jack-up rig, initiates the idea to estimate the spudcan penetration directly from in situ site...
Proceedings Papers

Paper presented at the The Twenty-second International Offshore and Polar Engineering Conference, June 17–22, 2012
Paper Number: ISOPE-I-12-330
.... The LDFE/RITSS results were compared with existing centrifuge test data and numerical results. The effect of a thin strong soil layer sandwiched between two soft uniform clay layers on spudcan penetration responses was studied. The thin strong layer can be either a stiff clay layer or a sand layer...
Proceedings Papers

Paper presented at the The Twentieth International Offshore and Polar Engineering Conference, June 20–25, 2010
Paper Number: ISOPE-I-10-085
... the bearing capacity of the stronger layer more accurately which will reduce the punch-through failure during preloading. Spudcan penetration occurs when the applied load equals or exceeds the ultimate bearing capacity of the foundation soils. The ultimate bearing capacity, Q, for a circular footing...
Proceedings Papers

Paper presented at the The Eighteenth International Offshore and Polar Engineering Conference, July 6–11, 2008
Paper Number: ISOPE-I-08-078
... ABSTRACT Centrifuge model tests have been conducted on half-cut model jack-up spudcans to investigate the soil flow mechanism and the free field soil movements at the location of adjacent piles during spudcan penetration in soft clay. From the high resolution photographs taken during spudcan...
Proceedings Papers

Paper presented at the The Sixteenth International Offshore and Polar Engineering Conference, May 28–June 2, 2006
Paper Number: ISOPE-I-06-202
... ABSTRACT This paper presents the numerical simulation methodology to investigate the spudcan penetration effect. Based on a practical design, a full three dimensional finite element model, which includes an inclined pile embedded in the foundation and a spudcan resting on top of the seabed...
Proceedings Papers

Paper presented at the The Thirteenth International Offshore and Polar Engineering Conference, May 25–30, 2003
Paper Number: ISOPE-I-03-177
... on individual ‘spudcan’ footings. spudcan penetration upstream oil & gas soil failure mechanism cavity foundation platform design wall failure full cavity flow failure centrifuge test spudcan foundation fe analysis failure mechanism undrained shear strength penetration randolph...
Proceedings Papers

Paper presented at the The Third International Offshore and Polar Engineering Conference, June 6–11, 1993
Paper Number: ISOPE-I-93-035
... strategy and the different areas of SSA covered by work to date including screening analyses, and spudcan penetration and punch through predictions. It also briefly discusses the problems encountered, how they were resolved and future plans to improve the accuracy of predictions and SSA turn around time...

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