JIP OSCAR

A Joint Industy Project on Offshore Scour And Remedial Measures

Assignment/short description

Scour around jack-up footings is a known phenomenon. However, no distinct guidelines are available for scour assessment, scour prediction and scour protection design for jack-up footings. By improving the understanding of the phenomenon of scour the operational risks, the time and costs for site preparation and for monitoring could be significantly reduced. Deltares is starting a joint research project to tackle scour assessment for offshore structures with a focus on jack-up platforms.

The main objectives of this JIP are to improve the understanding of scour around jack-upfoundations (individual legs, mat-supported) and to obtain ready-to-use practical tools which incorporate knowledge and guidelines for scour management and scour friendly jack-up design. The scope of work comprises four basic work packages (WP). WP 5 is optional and depends on the number of participants.

• WP 1: Desk assessment: Literature review, standard recipe for scour-related site
  assessments.
• WP 2: Systematic physical model testing: Test program comprises variation of
  hydraulic conditions, penetration depth, orientation, foundation types (mat-supported,
  individual legs), scour protection, detailed measurements of velocities and scour.
• WP 3: PC tool “OSCAR – The scour manager”: Development of easy-to-use software
  with comprehensive manual for various stages of the jack-up site assessment: scour
  prediction, design of protection (loose gravel).
• WP 4: Field case workshop: Application of the knowledge gained in this JIP and the
  PC tool in field cases.
• WP 5: Numerical modelling: Simulation of the water motion around the foundation,
  comparison with laboratory measurements, computation of scour-related hydrodynamic
  characteristics.

The deliverables are progress reports, desk study report, physical model testing report, numerical modelling report and the computer program “OSCAR – The scour manager” including user manual.

The participant fee is Euro 50,000 (for oil & gas companies, jack-up owners, shipyards) and Euro 25,000 for other companies (intended for small companies, Deltares takes a reasonable decision based on the application). JIP OSCAR will be started on 1 October 2008 (deadline for registration). For late participants the fee will be increased by Euro 10,000 (assignment not later than 31 May 2009) and +Euro 20,000 in case of assignment after 1 June 2009. Intermediate and final results will be presented and discussed during four progress meetings. JIP OSCAR will be completed in March 2010.

For registration please return the signed contract to Deltares , attention .