A model for simulating deep water oil and gas blowouts - Part II: Comparison of numerical simulations with “Deepspill” field experiments

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Abstract
A companion paper (Part I-Zheng et al., 2003) presents the development and the module tests of a model, CDOG, developed to simulate the behavior of oil and gas accidentally released from deepwater. CDOG model incorporates the phase changes of gas. associated changes in thermodynamics and its impact on the hydrodynamics of the jet/plume. Hydrate formation, hydrate decomposition, gas dissolution, non-ideal behavior of the gas, possible gas separation from the main plume due to strong cross currents are integrated with the jet/plume hydrodynamics and thermodynamics. In this paper. CDOG model is used to numerically simulate the large-scale and unique field experiments conducted in Norway. The field experiments consisted of two oil and methane gas releases and one methane gas only release from a deepwater location (844 m water depth). Comparisons between the simulations and observations are discussed in detail. The comparisons between the simulations and the observations are good.