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ASA Models for the Gulf of Thailand

Posted October 28, 2008 by

ASA scientists have been supporting the offshore oil and gas industry for over 20 years with modeling services, contingency planning, forecasting, and environmental impact assessment services. Education on the conceptual components of these studies is essential to assist industry and regulators in understanding the role of science and the practical application of the results for the offshore community.
Oil and gas exploration and production has been active in the Gulf of Thailand for over 30 years. Currently there are over 200 oil and gas platforms operating in the Gulf of Thailand. Asia-Pacific ASA staff have been providing support for the very active Australia and Southeast Asia offshore regions, and are working closely with Chulalongkorn University and the Thailand Government looking at issues specific to the Gulf of Thailand.

On 13 June, Sasha Zigic gave a 3-hour seminar in Bangkok, Thailand on the application ASA’s models for offshore Environmental Impact Assessments (EIA). The seminar provided insight into the main components of the studies, understanding the metocean conditions (winds and currents), classifying possible discharges and analyzing the possible impacts from offshore discharges. Sasha described the use of tools such as HYROMAP for circulation modeling, OILMAP for probabilistic and deterministic oil spill modeling, and MUDMAP for the modeling of cuttings, mud, and production water discharges. The seminar provided practical examples of the interpretation of model results.

The following day Sasha provided a more technical seminar for government regulators and Chevron personnel. The seminar went into greater detail on the model formulations and validation, classification of the metocean input data for the Gulf of Thailand, and world-wide applications.

A stringent HYDROMAP validation study was undertaken for the Gulf of Thailand, comparing model results with measurement data from 11 tide stations. There was a very good agreement between the measured and predicted surface elevation, phase and amplitude. The successful validation of the model in this region was very satisfying for the modeling team at APASA as the complexity of water movement within the Gulf of Thailand is a real challenge for numerical models.

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