... is the main contributor for the larger breakout force on extraction of jack-up spudcans from single layer clay. The centrifuge model tests were undertaken to provide insight into spudcan foundation behavior during extraction through single, double, and multilayer soils. Hossain (2014) used a digital camera...

... in determining the accuracy of the evaluation of the penetration resistance profile. drilling equipment penetration process bearing capacity shear strength spudcan engineering soil back-flow spudcan foundation upstream oil & gas experiment soil sample randolph kaolin clay silty clay...

... layer overlying sand, and explore relationships for the penetration resistance, are reported. The Coupled Eulerian-Lagrangian method was used to simulate the continuous penetration of the spudcan foundation. The clay layer was modelled with the elastic perfectly plastic Tresca model, while the sand...

... ABSTRACT The bearing capacity envelopes for a spudcan foundation in single layer sand or clay soil are well-documented based on model tests and finite element analyses. In reality, layered soils are common in the field and in such conditions it is also important to consider the combined...

... identify any potential risk related to spudcan foundation safety during installation. However sometimes a jack-up platform is supposed to be installed on a sloping seabed or next to existing footprint, which generates asymmetric stress distribution on the spudcan foundation and leg. Therefore, predicting...

... Abstract Except for the Jack-up rig, spudcan foundation is also used by the Jackup type Wind Turbine Installation Vessel (WTIV). In the stratified deposits, where an interbedded strong layer overlays a weak layer, a potential punch-through failure usually exists during the installation...

... and the soil flow -back mechanism. completion installation and operations mesh ultimate bearing capacity finite element analysis bearing capacity deformation penetration spudcan formulation mechanism spudcan foundation equation silty clay foundation cavity ale algorithm artificial...

... Abstract A possible punch-through failure usually exists for a spudcan foundation to be installed on sand layer overlaid clay soils. In the Southwest Sea of Korea, the critical soil profile of sand-overlaid-clay strata are met at the target zone planned for the installation of a Jack-up type...

... investigation data. This paper reports the results from numerical modelling of spudcan foundation and cone penetrometer penetrating through layered clay deposits. The continuous penetration analyses were carried out using a 3D large deformation FE (LDFE) method termed Coupled Eulerian-Lagrangian (CEL) approach...

... ABSTRACT: In this paper the installation process of spudcan foundations into sand overlying clay is simulated using the Coupled Eulerian-Lagrangian method (CEL). Extended hypoplastic models are used to simulate the soils: the sand is simulated using the hypoplastic model, whereas...

... ABSTRACT: Jack-up rigs are a popular offshore structure in medium water depth due to its mobility. Spudcan foundations are commonly used to support each individual jack-up leg. When multi-layered soils are encountered, foundation bearing capacity needs to be predicted by considering...

... ABSTRACT: Footing penetration of spudcan foundation is a continuous process. The penetration depth of spudcan foundations is typically predicted by considering a wished-in-place foundation at different depths and following traditional bearing capacity theory approaches to assess the depth...

... ABSTRACT: The ‘spudcan’ foundations for mobile drilling rigs continue to exhibit a high failure rate in the offshore oil and gas industry. Contributing to this is the more frequent use of larger jack-ups in regions with highly stratified seabeds and continual exploration in deeper and untested...

... ABSTRACT The paper reports results of finite element analyses undertaken to provide insight into spudcan foundation behaviour during undrained vertical penetration through a thin stronger clay layer into weaker material, varying the thickness of the upper crust layer relative to the spudcan...

... The paper reports results of large deformation finite element (FE) analyses and centrifuge model tests undertaken to provide a better understanding of spudcan foundation resistance during undrained vertical penetration through a stronger clay layer into weaker material, with potential for punch...

... ABSTRACT Spudcan foundation, penetrating into stratified soils is studied using Hadaptive finite element method (FE). This is to investigate the potential hazard of punch-through failure, i.e. a rapid penetration in a short time, in the situation of stiff soil overlaying soft soils...

... ABSTRACT The vertical penetration of spudcan foundations, as used in mobile jack-up rigs, has been studied with a view towards understanding the mechanisms of soil deformation underneath and around spudcan foundations during deep penetration. Drum centrifuge model tests and finite element (FE...

... ABSTRACT Offshore spudcan foundation, penetrating into normally consolidated (NC) clay, is studied using finite element method (FE) and upper bound analysis (UB). H-adaptive Remeshing and Interpolation Technique with Small Strain model (RITSS) is employed in continuous penetration simulation...