Identification of geological hazards of the South-Kirinskoye oil and gas condensate field (shelf of the Sakhalin Island).

Abstract

Since 2010, the South-Kirinskoye oil and gas condensate field (shelf of the Sakhalin Island) has carried out high resolution seismic surveys to search for geological hazards in order to choose a safe location for the drilling platform. Longitudinal profiling of reflected waves with a 48-fold overlap of the reflecting horizons was applied. To obtain high-quality seismic migrated sections, the unified algorithm for processing seismic data for the offshore areas of the South-Kirinskoye oil and gas condensate field was developed. Seismic sections data of more than 8,000 km were processed. For each horizon, dynamic analysis of maximum peak amplitude and minimum peak amplitude was carried out. In the process of seismic sections interpretation all identified anomalies were gathered in the geological hazards map to select safe location of drilling platforms.