Spectrum, Airbus produce joint oil seep & seismic correlation study Adriatic Sea

Seismic services company Spectrum and earth observation specialists Airbus Defense and Space have produced a collaborative study to correlate natural sea surface oil seeps identified using radar and optical satellite imagery with Spectrum’s Multi-Client seismic data library in the Adriatic Sea.

This unique study is timed to coincide with Croatia’s first offshore licensing round to help exploration companies assess hydrocarbon play systems at regional and individual license block level. Extension of the analysis in Italian waters also provides additional insight into the prospectivity of Italian waters.

Results suggest a strong correlation between higher confidence slicks and structural features interpreted from a Spectrum 2D seismic survey acquired offshore Croatia in 2013. Seeps were found to be positioned in association with geological structures and potential seismic-interpreted Direct Hydrocarbon Indicators (DHIs), suggesting that active hydrocarbon migration is occurring and that a thermogenic source is responsible for some of the many instances of shallow gas interpreted in the seismic lines.

Analysis also suggests migration pathways along faults are being utilized by hydrocarbons sourced from the Triassic. In addition some of the slick observations have revealed hidden prospectivity, drawing attention to legitimate potential leads not previously identified by seismic interpretations alone.

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