Leg Penetration Analysis
SPUDPEN
Leg Penetration Analysis
Calculate jack-up rig leg penetration behavior during preloading according to ISO Standard 19905-1 (2023). Predict penetration depth and identify jacking risks, e.g. potential punch-through situations with confidence.
€2,475 / per year*
*Based on a single user license
Features
- ISO 19905-1 Compliant
- Multi-layered soil profiles
- Punch-through analysis
- Squeezing calculations
- Detailed LPA reports
- Fast & Reliable
- Export to PDF
- Detailed Calculations
- Batch Analysis
- Time saver!
- Highly Secure
- Cloud Based
- ISO Compliant
“Fast and accurate calculations for
safe jack-up operations” – Spudpen Users
Proven technology running since 2012
Bespoke software for offshore industry since 2012
About Spudpen
Spudpen is a specialised calculation engine designed to assess the leg penetration behavior of independent jack-up rigs during preloading operations. Spudpen is a critical tool for offshore geotechnical engineers to ensure the stability and safety of jack-up platforms.
About Spudpen
Spudpen leg penetration analysis refers to the calculation of jack-up rig leg penetration behavior during preloading, according to ISO Standard 19905-1 and has been developed in 2012 by the late Steve Kay – a senior geotechnical engineer with over 35+ years of experience in the offshore wind and energy sector.
The main objectives are to predict the final leg penetration depth and identify potential punch-through situations. Spudpen analysis are used to assess the foundation capacity of jack-up rigs, which rely on spudcan footings to spread the load and prevent excessive penetration into the seafloor.
What is Spudpen?
Spudpen is a powerful calculation kernel that performs leg penetration analysis of mobile offshore units by implementing the ISO 19905-1:2023 industry standard.
It is primarily used to:
- Predict Final Penetration Depth: Estimate the required leg penetration to reach a stable bearing capacity.
- Identify Geohazards: Pinpoint potential risks such as punch-through situations in layered soil profiles.
Analyse Complex Soil Conditions: Model multi-layered soil profiles consisting of both sand (drained) and clay (undrained) layers.
ISO 19905-1
Spudpen leg penetration analysis follows ISO Standard 19905-1 (2023) and will be updated accoringly.
The main objectives are to predict the final leg penetration depth and identify potential punch-through situations. Spudpen analyses are used to assess the foundation capacity of jack-up rigs, which rely on spudcan footings to spread the load and prevent excessive penetration into the seafloor.
Deep spudcan penetrations can lead to difficulties during the extraction process, especially in clay soils, due to insufficient rig capacity to overcome the extraction resistance. Conventional methods based on bearing capacity formulas, as well as finite element analyses, are used to calculate spudcan penetration and extraction forces at different locations.
These analyses consider factors such as soil conditions, spudcan geometry, and loading conditions to ensure the jack-up rig can be safely installed and extracted.
"Speed up your LPA Assessment"
Instead if doing manual calculations in Excel.
"Fast. Reliable and Detailed Output Results."
Spudpen has been in use since 2012 - and very fast.
"Save Time and Increase Efficiency for Offshore Wind Operations"
You can do fast and rapid calculations.
Whats in Spudpen?
Spudpen
- Industry Standard
- Arithmetic Accuracy
- Soil Layers
- Platforms Supported
- Batch Mode
- Input via interface or Excel
- Output via PDF or Excel
- Reports
- Speed
Input / Output
- Fully compliant with ISO 19905-1:2013
- Double precision (approx. 15 decimal digits)
- No fixed internal limit on layer quantity
- Cross-Platform (no installation is required)
- Multiple analysis at once
- Both via graphical user interface (GUI) and via text input file
- Detailed text output reports and resistance-penetration curves.
- Clear indication of soil stratigraphy and spudcan shape
- Super fast (600 analysis in just 5 minutes!)
Methods
- Houlsby and Martin (2003)
- Skempton (1951)
- Hossain et al. (2006)
- Young and Focht (1985)
- Hanna and Meyerhof (1980)
- Brown and Meyerhof (1969)
Ground Models
- Model the ground (number based)
- Model the spudcan (number based)
- Select penetration calculation model (e.g. ISO 19905-1) 2016
- Check input parameters e.g. gross bearing capacity, structural spudcan reaction, submerged weight of backfill, buoyancy
- General shear in sand
- General shear in clay
- Punch-through Sand or Clay into Sand or Clay
- Squeezing of clay
- Punch-through Sand or Clay into Squeezing Clay
Features
ISO 19905-1 Compliant
Full compliance with the latest international standards for jack-up assessments
Multi-Layer Soil Profiles
Handle complex geological conditions with multiple soil layers
Detailed Reports
Generate comprehensive LPA reports for clients and surveys.
Excel Integration
Import soil data directly from Excel spreadsheets
Methods & Calculations
Multiple calculation methods including backfill and more.
Leg Penetration Analysis
Handle complex geological conditions with multiple soil layers
Bespoke software for offshore industry since 2012
Key Performance Specifications
Built by geotechnical engineers for geotechnical engineers.
Our software is designed to save you time and increase efficiency.
Feature
- Industry Standard
- Arithmetic Accuracy
- Soil Layers
- Platforms Supported
- Batch Mode
- Input
- Output
- Reports
- Speed
Specification
- Fully compliant with ISO 19905-1:2013
- Double precision (approx. 15 decimal digits)
- No fixed internal limit on layer quantity
- Cross-Platform (no installation is required)
- Multiple analysis at once
- Both via graphical user interface (GUI) and via text input file
- Detailed text output reports and resistance-penetration curves.
- Clear indication of soil stratigraphy and spudcan shape
- Super fast (600 analysis in just 5 minutes!)
Built by geotechnical engineers for geotechnical engineers.
Our software is designed to save you time and increase efficiency.
Leg Penetration Analysis
- Houlsby and Martin (2003)
- Skempton (1951)
- Hossain et al. (2006)
- Young and Focht (1985)
- Hanna and Meyerhof (1980)
- Brown and Meyerhof (1969)
Specifications
- Model the ground (number based)
- Model the spudcan (number based)
- Select penetration calculation model (e.g. ISO 19905-1) 2016
- Check input parameters e.g. gross bearing capacity, structural spudcan reaction, submerged weight of backfill, buoyancy
- General shear in sand
- General shear in clay
- Punch-through Sand or Clay into Sand or Clay
- Squeezing of clay
- Punch-through Sand or Clay into Squeezing Clay
Bespoke software for offshore industry since 2012
Models & Capabilities
Built by geotechnical engineers for geotechnical engineers.
Our software is designed to save you time and increase efficiency.
1. Advanced Geotechnical Failure Models
- General Shear in Sand:
- Uses established bearing capacity equations for sand layers.
- General Shear in Clay
- Implements the Houlsby and Martin (2003) model, suitable for both constant and linearly increasing undrained shear strength.
- Squeezing of Clay:
- Specifically calculates radial soil extrusion for soft clay layers straddling competent strata.
- Comprehensive Punch-Through Analysis:
- Analyzes scenarios where a strong soil layer (sand or clay) overlies a weaker layer, including complex cases like punching through sand into squeezing clay.
2. Precise Structural and Environmental Adjustments
- Backflow and Backfill Weight:
- Deducts the effect of the submerged weight of soil that flows back on top of the spudcan.
- Soil Buoyancy (Bs):
- Accounts for the buoyant force provided by displaced submerged soil.
- Cavity Depth Modeling:
- Iteratively computes the depth of open cavities (Hcav) remaining above the spudcan.
3. Sophisticated Modeling & Integration
- Flexible Spudcan Geometry:
- Allows modeling of various circular cross-sections, including flat-bottomed and conical shapes.
- Automatic Soil Matrix Adjustment:
- Automatically adjusts soil layer depths and thicknesses when squeezing occurs to provide more realistic penetration results.
- Batch Mode Execution:
- Enables rapid, automated processing of multiple calculations for sensitivity studies.
Software Suite For Geotechnical Engineers
Versatile Pricing
Below mentioned are starting license fees per year and can differ for SPUDPEN, CAISSON_VHM and GEO VISION.
Please contact us for exact pricing per solution or tailored to your needs.
Tier 1: Single User
Freelance / Individual
€2,475 / per year for 1 license
- 1 User License
- Cloud Calculations
- Cross-Platform / Browser
- 800+ Pages of Documentation
- Free Technical Support
- Free Updates
- 12 Months Access
- Hands-on training (optional)
Best Value
Tier 2: Multi User
SME / Teams
Get Quote / for your team
- Including All Features of Tier 1
- Minimum of 5 floating seats (more possible)
- Batch-mode analysis
- Multi User / Network License
- Free Updates
- Free Technical Support
- 12 Months Access
- Hands-on training (optional)
Tier 3: Enterprise
SME / Teams
Custom / let us know, we have options
- Including All Features of Tier 2
- Adjustable Floating Seats
- Batch-Mode analysis (extended)
- Integration: GeoVision + Caisson VHM
- Custom Integrations e.g. API (optional)
- Free Updates + Technical Support
- 12 Months Access
- Hands-on training (optional)
If you need additional services like training, consultancy and custom integrations, please let us know and contact us.
Ready to Steamline Your LPA Workflow?
Contact us for a quote tailored to your needs. Single user and multi-user licenses available.
Contact Information
Please let us know how we can help?
Location
Belgium (Serving Worldwide)
info@casksoftware.com
Available for quick inquiries
We do our best to respond within 24 hours.