Production from Draugen started in 1993. In its 14th year Draugen faces declining oil and increasing water production and is around halfway in its production life. The field development with water injection and relatively few wells has proved to be very successful. This paper shows how well and reservoir surveillance has been set-up in the Draugen field. Interesting features of this set-up are ? Structured and automatic data integration. Information providers for the important subsurface risks and uncertainties have been mapped, which has resulted in a better understanding of the value of surveillance activities. Integration of laboratory data, production well test results and model-based-rates are enablers for improved production allocation to individual wells. “Data-to-information” work processes have been mapped and automated as a natural part of the collaborative work environment between the platform and the offices. ? Use of time-lapse seismic. Draugen acquired seismic of excellent quality in 1998, 2001 and 2004. The data has been a key enabler to understand the water flood and to manage the reservoir. This paper shows how visualisation methods and discipline integration have maximized the information of the 4D surveys, and how this has been used to improve the reservoir simulation model. The paper provides clear examples of how surveillance is supporting reservoir management and production optimisation in the field.
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