NAV 2018

Session

Offshore

20 Jun 2018, 16:30

Trieste (Italy)

42. MODULAR PLATFORMS FOR EARLY PRODUCTION / FULL FIELD APPLICATIONS

ANDREA RIMOLDI (ENI), Mr MIRCO BUSETTO (FINCANTIERI OIL & GAS)

20/06/2018, 16:30

Offshore vessels design & engineering

Paper

Previous works have shown that the use of floating modular platforms (FMP) can represent a valid approach to the development of human activities at sea, near and off shore, both in civil/residential or industrial applications. In particular, FMP technology provides a solution that allows the development of offshore fields in sequential stages. This will allows a shortening of the time for...

65. Heavy-lifting: coupled stability & structural analysis in a load-out operation

Mr Stéphane Dardel (Nick Danese Applied Research Sarl)

20/06/2018, 16:45

Offshore vessels design & engineering

Paper

The economic and technical challenges of large-scale load-in/out operations require the assurance provided by specialized and integrated engineering software that provides leading-edge support to preparation and planning and helps ensure enhanced safety and quality control. This case-study describes the planning of a loadout operation by a Self Propelled Modular Trailer (SPMT), for which...

37. Evaluation of extreme wave loads for slender tubular structures

Francesco Mauro (Universita' di Trieste, University of Rijeka)

20/06/2018, 17:00

Offshore vessels design & engineering

Paper

To design particular Offshore Vessels appendages like stingers, it is common practice to search extreme values of wave induced loads. The standard methods applied are performing the analysis by means of a Weibull distribution. The necessity of offshore industry to operate with severe sea state and the complexity of the considered geometry can be source of evident nonlinearities in the peaks...

98. Station-keeping calculations in early design stage: two possible approaches

Francesco Mauro (Universita' di Trieste, University of Rijeka)

20/06/2018, 17:15

Offshore vessels design & engineering

Paper

The continuous increase of offshore operation in deep or ultra-deep waters, makes, for modern units, Dynamic Positioning (DP) analysis mandatory since early design stage. The necessity to provide reliable solutions for the DP system to mount on board in order to maintain position requires the implementation of simulation codes to reproduce the dynamic behaviour of the unit under variable...

36. Effect of propeller modelling on station- keeping thruster allocation strategy

Francesco Mauro (Universita' di Trieste, University of Rijeka)

20/06/2018, 17:30

Offshore vessels design & engineering

Paper

In preliminary Dynamic Positioning calculations, quasi-steady prediction approach is commonly used to figure out the system capability. Thrust allocation solver is usually modelling the thruster devices as pure force generators, considering empirical general formulations to correlate delivered thrust with absorbed power. In such a way,a rough estimate of the power demand during station-keeping...