Astokh area of Piltun-Astokhskoye oil-gas condensate field (Astokh field) is one of the oil assets of Sakhalin Energy Investment Company Ltd. (Sakhalin Enegy). The field has seventeen years of production history and currently has being developing under water flood scheme. It still has significant reserves to recover and at the current stage of the field development main focus is put on further infill drilling and water injection optimization. Full-field integrated modeling with realistic range of subsurface scenarios is an essential tool for optimizing further field development strategy and maximizing the value of the asset.

In the presence of long production history, 4D seismic and surveillance data reservoir model construction work cannot be efficiently done without integrated approach where all relevant disciplines provide their input to the final product. This paper describes reservoir modelling work that has been recently done in Astokh field. Multi-disciplinary team of petrophysicist, geoscientists and reservoir engineers of Sakhalin Energy has made an effort to combine all available information for constructing a brand new Astokh integrated model with in-depth reviewing of petrophysical and geological aspects in close connection with reservoir engineering data and reservoir simulation modelling.


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