Nowadays many oil and gas companies demonstrate a great interest to technology of liquefying of natural gas (LNG). LNG technology is especially topical for gas and gascondensate fields of Yamal and Gydan Peninsulas located so remote from network of transfer pipelines. The exploitation of the field, which provides the output to LNG plant, has its peculiarities in compare with traditional approaches. Development of new approaches to the LNG plant start-up optimization is among the foreground tasks today. Failure prediction and monitoring of operation on the field, providing the production to LNG plant, are inconceivable without dynamic multiphase flow simulator. Main purpose of this work is failure prediction and optimization of South Tambey field operation in the period of start-up and ramp up, taking into consideration posible uncertaincies and risk estimation. In this article authors present the results of predictive computation of the field operation while start-up, and describe their optimization sugestions. The concept of integrated modeling of the entire system "formation-well-pipeline system-inlet facilities" introduced in this paper could be used for the purpose of subsequent monitoring of operation regime.

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