PARAMETRIC STUDY OF FPSO RESPONSES

The demand for oil increases with the development of oil production in deeper water
area. Due to its economic, flexibility and ability to adapt with variety of water depth,
FPS4 has been recently used as an attractive alternative of offshore oil production. This
study present concern in the operations of FPSO systems by investigating the effects of
different parameters toward the FPSO. The selection of structural configuration and
other parameters is very important as it become the basis for design an efficient
structure. Data has been obtained from Ruby FPSQ and has been adjusted to perform
dynamic analysis such as wave forces, wave spectrum and time series with subject to
three degree of motions namely surge, heave and pitch. Parametric studies by varying
the water depth and the wave spectra have been made for each motion. From the study,
it is observed that there is significantly small changes in wave frequency motion as
water depth increase from shallow water to deepwater and ultra deepwater. As for the
changes in wave spectra, the wave frequency motion for PM spectrum is doubled the
wave frequency motion for Jonswap spectrum. This finding may help the ocean
engineers determine the condition of the sea at Ruby field when designing any offshore
structure in the future.