Norne 4D and Reservoir Management – The Keys to Success

Time-lapse seismic is playing an important role in reservoir management on the Norne, Stær and Svale oil fields. The total value of the 4D data is estimated to 4.3 billion NOK. The keys to the success has been a strong focus on the whole value chain from acquisition, processing, 4D interpretation and reservoir management. Also very important is continuous use of the 4D data in reservoir management also between the acquisitions. We here show how each of these factors have been important for the success, illustrated by case examples. On Norne infill drilling targets are defined using 4D seismic data, and already on the first monitor survey on Svale unexpected barriers in the reservoir and out of target injection were observed. The importance of a good quality base survey, and frequent monitoring surveys have been clearly demonstrated.