Subsea Pipeline Design and Analysis

On-Bottom Stability (OBS) Software

Developed by PRCI, it’s been the world standard for subsea pipeline design and stability analysis for over 40 years.

What is OBS?

OBS has three levels of analysis available depending on the complexity of your project. Use the software to calculate kinematics from 3-D irregular waves, address the hydrodynamic complexity of shallow water, non-linear time-dependent interaction between pipeline and soil, and non-linear pipeline material properties (for boundary elements).

What You’re Getting with OBS

OBS software tool performs detailed analyses of specific pipeline sections subjected to specified environmental conditions.

OBS Level 1 Level 1 Analysis

Fast and simplified calculations for static stability of un-trenched pipes with options for logarithmic boundary layer formation and marine growth specification.
It models displacement under the load caused by waves and current and includes other considerations such as cohesive and non-cohesive soils.
Demo Video

OBS Level 2 Level 2 Analysis

The most common level of analysis by most pipeline operators and service providers
Comprehensive on-bottom pipeline design with calculations for clay and sand soils
Parametric-run functionality for pipe wall thickness and water depth
Demo Video

The PRCI On-Bottom Stability Simulator is the world standard for subsea pipeline design and analysis.

. On-bottom pipelines face the additional stresses and strains of currents and wave action, and engineers need calculations that comply with additional standards to analyze them.

Level 3 Analysis

Used for the most complex subsea pipeline projects in the world involving finite element analysis
Random wave generation models compute the environmental forces of surface waves
Produces a velocity-time series for each point
Demo Video