Oil in Chalk |
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| Authors: | JAKE HANCOCK |
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| Institution: | Jake Hancock is Reader in Geology at King's College, University of London. |
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| Abstract: | Chalk is not the sort of rock that you would expect to yield oil. Although it has a high porosity when first formed, the permeability is low. Even the porosity is normally much reduced under overburdens of more than 1000 m. Yet in the North Sea there are special conditions that allow major reservoirs in the Chalk beneath thousands of metres of Tertiary sediments. |
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