Variations in present-day temperatures in onshore and offshore Netherlands

ENGINE Workshop Potsdam 6 -8 November 2006

Hanneke Verweij

ENGINE Workshop, Potsdam 6-8November 2006

Main topics

• Quality controlled temperature & geological database

• Correction raw temperature data• BHTx• Regional correction raw BHT’s

• Calculation geothermal gradients using all temperature data and Bayesian statistics

• Temperature mapping

Examples regional variations temperatures

ENGINE Workshop, Potsdam 6-8November 2006

Correction raw BHT temperatures

Bottom Hole Temperatures in the Broad Fourteens Basin

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Temperature (deg C)

Dep

th (

m)

BHT raw

BHT raw corrected

DST high reliability

Linear (BHT raw)

Linear (DST high reliability)

Linear (BHT raw corrected)

ENGINE Workshop, Potsdam 6-8November 2006

Broad Fourteens Basin

Tgrad > 32.5 oC

Platform

Tgrad< 32.5 oC

SW-NE cross-section through inverted Broad Fourteens Basin and adjaccent platform showing contrast in lithostratigraphic build-up of basin and platform area

Basin

boundary Fault

zone

Variations present-day temperatures in relation to geological conditions