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News from SPE ATCE 2012: 4D seismic history matching improves reservoir modeling and management

BY NELL LUKOSAVICH

SAN ANTONIO – 4D seismic has been used in a variety of operations from exploration through production. Reservoir monitoring has especially become a necessity as hydrocarbon extraction has moved into deeper, hotter and more pressurized wells. While reservoir simulation itself has advanced tremendously, France’s Total discussed the use of 4D to history matching in order to improve reservoir modeling.

When 4D seismic is used in well monitoring, the results can be collected as a history matching process, which can create more accurate reservoir forecasts since the collected data fine-tunes the expected outcomes.

Total first experimented with 4D seismic monitoring at the Moho Bilonde field, offshore Congo. The 4D seismic was acquired in January 2012, 2.5 years after production started. “The data was of very good quality – with a vertical resolution of 6-7m,” a Total representative said. The team was able to detect water displacing oil and then adjust the reservoir simulation model for that particular field. “Flood fronts from 4D seismic as history match can be indicators for water injection.” In further comparing the permeability in the upper and lower reservoirs with 4D data, the well data match was improved. With this knowledge, reservoir management and forecasting was improved.

10/09/2012

 

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