Dispersal Model of Condensate from Malamapaya Deep Water Gas Production
Charina Lyn Amedo(1) , Cesar Villanoy(1) , and Laura David(1)
Marine Science Institute,
University of the Philippines,
Environmental concerns about the possible accidental discharge of oil and condensate from the operations of the Malampaya Deep Water Gas-to-Power project and its potential effect on natural resources of Northwest Palawan has been recognized. A dispersal model was developed to predict the transport of condensate from the Shallow Water Platform (SWP) to identify potential impact areas and assess vulnerability of environmentally critical areas along the Northwestern Palawan shelf.
Oceanographic features off Northwest Palawan were examined to characterize the variability of wind and sea level variations and to relate it to local seasonal characteristics of the water column. The data used includes satellite measurements of windfields extracted from QuikSCAT Level 3 data set, the gridded MSLAs resulting from the merging of the T/P and ERS1/2 data, and historical temperature-salinity data from World Ocean Atlas 2001. The water column characteristics of the area were used in prescribing initial conditions of the hydrodynamic model, the velocity output of which was utilized as forcing for the dispersal model. The surface circulation of northwest Palawan was simulated using the Princeton Ocean Model (POM). A numerical experiment was conducted to estimates the relative importance of the physical factors to the dispersal patterns of condensate in the study area. The factors that account for these current variations are the coastal boundaries, the shallow water bathymetry over the continental shelf, the influence of remote forcing in the South China Sea, and atmospheric forcing.
A Lagrangian model used to simulate the mechanical transport of condensate estimates the distribution of oil (mass and concentrations) on the water surface and along the coastlines that consequently, determines potential impact areas in Northwest Palawan.