Offshore Technology Research Center

Seafloor Engineering and Characterization

Click on the links below to view project summaries and available reports for completed projects in the following areas:

Plasticity Modeling of Soil-Structure Interaction

Year

Non-Linear Load-Deflection Models for Seafloor Interaction with Steel Catenary Risers
2007
Seafloor Interaction with Steel Catenary Risers
2006
Numerical Model for Steel Catenary Riser on Seafloor Support
2005
Suction Caissons & Vertically Loaded Anchors: Design Analysis Methods
2005
Upper Bound Analysis for Drag Anchors in Soft Clay 
2005
Ultimate Capacity of Suction Caisson in Normally and Lightly Overconsolidated Clays
2004
Upper Bound Method Program for Inclined Load Capacity Calculation of Suction Caissons
2004
Deepwater Anchor Design Practice Phase I and II (Report to API/Deepstar)
2003
Developing a Model for Axial Pile Capacity in an Offshore Field
2002
Development of a Statistical Model for Laterally Loaded Pile Analysis to Reduce Uncertainty in an Offshore Field
2002
Prediction Methods for Capacity of Drag Anchors in Clayey Soils 
2002
The Capacity of Suction Caisson in Isotropic and Anisotropic Cohesive Soils under General Loading Conditions
2002
Design Methodologies and Criteria for Suction Caissons for Deepwater Mooring Applications Workshop
2001
Lateral Resistance of Suction Caisson Anchors
2000

CFD Modeling of Soil-Structure Interaction

Year

Torpedo Piles for Gulf of Mexico Applications - Model Torpedo Pile Tests in Kaolinite Test Beds
2008
Numerical Modeling of Torpedo Anchors
2006

FEM Modeling of Soil-Structure Interaction

Year

Suction Caissons: Finite Element Modeling
2005
A Computational Procedure for Simulation of Suction Caisson Behavior Under Axial and Inclined Loads
2004
Computational Procedure for the Estimation of Pile Capacity Including Simulation of the Installation Process
2001
Analysis of the Integral-Ring Arrestor for Deep-Water Pipelines
1995
Stability of Tubes Under External Pressure and Structural Loads
1993
Steady-State Finite Element Analysis of Buckle Propagation in Pipelines
1993
A Finite Element Model for the Analysis of Pile Driving
1992
Stability of Deep-Water Pipelines Under Combined Loading
1991
Dynamics of Propagating Buckles in Deep-Water Pipeline
1990
Finite Element Analysis of Propagating Buckles in Deep Water Pipelines
1990

Scale Modeling of Soil-Structure Interaction

Year

The Performance of Drag Embedment Anchors (DEA)
2010
Performance of Suction Caisson Anchors in Normally Consolidated Clay
2005
Suction Caissons : Model Tests
2005
Laboratory Tests to Estimate Strength Profile of Normally Consolidated Kaolinite
2004
Horizontal Capacity of Suction Caissons in Normally Consolidated Kaolinite
2003
Axial Capacity of Suction Caissons in Normally Consolidated Kaolinite
2002
A Laboratory for Measuring the Axial and Lateral Load Capacity of Model Suction Caissons
2001
Model Offshore Soil Deposit: Design, Preparation, and Characterization
2001
The Pullout Capacity of Suction Caisson Foundations
1999
An Experimental Facility to Model the Behavior of Steel Pipe Piles in Sand
1996
Axial Capacity of Suction Piles In Sand
1994
Design and Construction of a Model Suction Pile
1994
Investigation of Axial Tensile Load Capacity of Suction Piles
1993

Pile Foundations

Year

Analysis of Conservatism in Offshore Foundation Design
2009
Numerical Modeling of Drilled and Grouted Piles
1994
Equipment for Axial Load Testing of Model Open-Ended Pipe Piles in Sand
1992
Pipe Piles in Sand: An Improvement for the API RP2A
1992
Pile Foundations for Deep-Water Structures
1991
Effect of Oblique, Tensile Loading on the Capacity of a Vertical Pile in Clay
1990

Assessment of Environmental Risks

Year

Mudslides during Hurricane Ivan and an Assessment of the Potential for Future Mudslides in the Gulf of Mexico
2007
Risk Assessment of Submarine Slope Stability - Hydroplaning
2007
Risk Assessment for Submarine Slope Stability: Numerical Modeling of Flow around a Sliding Soil Mass
2005
The Importance of Lower-Bound Capacities in Geotechnical Reliability Assessments
2005
Assessment of Seismic Risk for Subsea Production Systems in the Gulf of Mexico
2003
Forum on Risk Assessment for Submarine Slope Stability
2003
Seafloor Slope Stability Under Static and Seismic Loading Conditions
2003
Submarine Slope Stability Forecasting and Back Analyses in Deep Water
1997

Seafloor Mapping and Characterization

Year

Suction Caissons: Seafloor Characterization for Deepwater Foundation Systems
2006
Past and Present Deepwater Contour-Current Bedforms at the Base of the Sigsbee Escarpment, Northern Gulf of Mexico
2005
Shear Strength Maps of Shallow Sediments in the Gulf of Mexico 
2004
Classification of Surficial Sediments: Northern-Central and Eastern Gulf of Mexico
2003
Deepwater Sediment Characterization
2002
Dynamic Analysis for Suction Caissons and Geologic Model for Makassar Strait
2002
Geotechnical, Geological, and Geophysical Properties of Deepwater Sediments:  Proceedings of 2001 Conference Honoring Wayne Dunlap
2001
Surficial Geological Characteristics of the Alaminos Canyon
1998
Advances in Interpretation and Analysis Techniques for Spectral-Analysis-of-Surface-Waves (SASW) Measurements
1997
Analytical Studies of Surface Wave Propagation along the Seafloor for Application to Spectral-Analysis-of-Surface-Waves (SASW) Testing
1996
Relationships Between Undrained Shear Strength and Compression and Shear Wave Velocities for Offshore Clays
1996
In Situ Measurement of Stiffness Profiles in the Seafloor Using the Spectral-Analysis-of- Surface-Waves (SASW) Method
1995
Hydrate Melting and Related Foundation Problems
1994
Theoretical Investigation of the Spectral Analysis of Surface Waves (SASW) Technique for Application Offshore
1993
Driven Cone Penetrometer for Pile Driving Analysis
1992
In Situ Detection of Natural Gas Hydrates Using Electrical and Thermal Properties
1992
Predicted Geoacoustic Properties of Gas Hydrate Saturated Marine Sediments
1992
Hydrates Detection By Cone Penetration Testing. Part 1: Cone Penetration Tests Through Ice Layers
1991
Experimental Study of Applying the Spectral Analysis of Surface Waves (SASW) Method Offshore
1990

Miscellaneous

Year

Interstitially Insulated Coaxial Pipe
2007
Development of Specialized Electronic Bibliographic Databases for Deep Ocean Hydrocarbon Production and Transportation
1993
DOHPT (Deep Ocean Hydrocarbon Production and Transportation) Program User's Manual
1993
Baked in Place Natural Casings
1992
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