No abstract

Development of Achimov formations is one of the most promising prospects to increase gas and gas condensate production for ROSPAN INTERNATIONAL Inc. Despite large amount of fluid data for Achimov formations, marked by abnormally high pressures (55-60 MPa) and temperatures (104-115 °С), considerable uncertainties still remain, owing to areal and vertical heterogeneity of formation gas within single formation: gas condensate content varies more than twice in a range 150-330 g/m3. Given that the current reservoir pressure has fallen below the dew point pressure for the most part of the license area, it is impossible to acquire new data on the initial gas composition, and existing data is not sufficient to eliminate the uncertainty. Under these circumstances simulation modeling becomes a powerful tool, enabling an engineer to reduce uncertainties by the consistent use of all existing data from various sources, such as geological, lab and production data.