The main objectives of JIP OSCAR were:

  1. To investigate the scour depth and time scale of scour development at three spudcan designs for a wide variety of hydraulic conditions and configurations.
  2. To consider the performance of a basic scour protection consisting of loose rock.
  3. To derive formulae to predict scour development at the considered spudcan designs (both without and with scour protection consisting of loose rock).
Scour pattern after the combined current-and-waves test

Several work packages

We did research in several work packages, first the physics were studied in an extensive laboratory test program executed in two of Deltares’ hydraulic facilities (Pacific and Atlantic Basin). Next, the scour processes were quantified in a new set of formulae that were subsequently implemented in engineering software “OSCAR”, which can be used in site assessments or during the operation when a scour-related problem appears. The final phase, which is currently being executed, is the validation of the formulae and software against field measurements around drilling rigs.

Share this page.