Tern oilfield

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The Tern Oilfield is situated 169 km north east of Lerwick, Shetland Islands, Scotland, in block numbers 210/25a. It is operated by Royal Dutch Shell and licensed by Shell/Esso. It was discovered in April 1975 in a water depth of 167 metres. Estimated recovery is 175 million barrels of oil.

Structurally, it is a triangular uplifted block of the Brent Group bounded by NNW-SSE and NNE-SSW trending faults and sealed by overlying Kimmeridge Clay (the dominant source rock, with debated contributions from the much deeper Old Red Sandstone) and Shetland Group mudstones.

The production is via the Cormorant Alpha platform to the Brent System pipeline.

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