oa A strategic decision: 4D seismic reservoir monitoring of all Sakhalin Energy Investment Company fields

Dedicated 4D surveys in 2010 (Astokh) – Russia’s first – and 2015 (Piltun-Astokh and Lunskoye) have demonstrated the value of 4D monitoring for Sakhalin Energy Investment Company through identification of bypassed oil, improved producer and injector well placement, and increased understanding of reservoir connectivity and flow behavior supporting production forecasting and field development planning. However, planning 4D acquisition, processing, and interpretation in the Sakhalin setting is complex and requires the commitment of all levels in the organization. Associated technical and non-technical, like environmental, risks need to be clearly and early identified and mitigated. The 4D value case for reservoir monitoring makes this worthwhile for Sakhalin Energy Investment Company, and a next 4D campaign is being planned for 2018.