The Carboniferous shales of the Midland Valley of Scotland: geology and resource estimation Mike...
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![Page 1: The Carboniferous shales of the Midland Valley of Scotland: geology and resource estimation Mike Stephenson (BGS) Director of Science and Technology Presenting.](https://reader034.fdocuments.us/reader034/viewer/2022042822/56649ebf5503460f94bca0af/html5/thumbnails/1.jpg)
The Carboniferous shales of the Midland Valley of Scotland: geology and resource estimation
Mike Stephenson (BGS)Director of Science and TechnologyPresenting on behalf of the BGS-DECC team
![Page 2: The Carboniferous shales of the Midland Valley of Scotland: geology and resource estimation Mike Stephenson (BGS) Director of Science and Technology Presenting.](https://reader034.fdocuments.us/reader034/viewer/2022042822/56649ebf5503460f94bca0af/html5/thumbnails/2.jpg)
Area studied
![Page 3: The Carboniferous shales of the Midland Valley of Scotland: geology and resource estimation Mike Stephenson (BGS) Director of Science and Technology Presenting.](https://reader034.fdocuments.us/reader034/viewer/2022042822/56649ebf5503460f94bca0af/html5/thumbnails/3.jpg)
Area has a proven hydrocarbon system
![Page 4: The Carboniferous shales of the Midland Valley of Scotland: geology and resource estimation Mike Stephenson (BGS) Director of Science and Technology Presenting.](https://reader034.fdocuments.us/reader034/viewer/2022042822/56649ebf5503460f94bca0af/html5/thumbnails/4.jpg)
How BGS calculated the shale resource in the Midland Valley of Scotland
• Wells (oil/gas and other types) to identify the tops and bottoms of the main shale-bearing intervals
• Seismic sections to map rock layers in subsurface• 3D computer model to estimate the volume of shale• Studies of the burial and uplift history & of the
organic content of the shale to narrow down the layers and areas that might yield hydrocarbons
![Page 5: The Carboniferous shales of the Midland Valley of Scotland: geology and resource estimation Mike Stephenson (BGS) Director of Science and Technology Presenting.](https://reader034.fdocuments.us/reader034/viewer/2022042822/56649ebf5503460f94bca0af/html5/thumbnails/5.jpg)
Wells/boreholes studied
![Page 6: The Carboniferous shales of the Midland Valley of Scotland: geology and resource estimation Mike Stephenson (BGS) Director of Science and Technology Presenting.](https://reader034.fdocuments.us/reader034/viewer/2022042822/56649ebf5503460f94bca0af/html5/thumbnails/6.jpg)
Area prospective for shale oil
![Page 7: The Carboniferous shales of the Midland Valley of Scotland: geology and resource estimation Mike Stephenson (BGS) Director of Science and Technology Presenting.](https://reader034.fdocuments.us/reader034/viewer/2022042822/56649ebf5503460f94bca0af/html5/thumbnails/7.jpg)
Area prospective for shale gas
![Page 8: The Carboniferous shales of the Midland Valley of Scotland: geology and resource estimation Mike Stephenson (BGS) Director of Science and Technology Presenting.](https://reader034.fdocuments.us/reader034/viewer/2022042822/56649ebf5503460f94bca0af/html5/thumbnails/8.jpg)
Estimate of oil in-place• 3.2 – 11.2 billion barrels (421 – 1,497 million
tonnes) and a reasonable central estimate is6.0 billion barrels of oil (793 million tonnes)
• This is an in-place resource (oil in the rocks) not a reserve (what might be produced)
• Drilling and testing of new wells is required to assess the feasibility of production
![Page 9: The Carboniferous shales of the Midland Valley of Scotland: geology and resource estimation Mike Stephenson (BGS) Director of Science and Technology Presenting.](https://reader034.fdocuments.us/reader034/viewer/2022042822/56649ebf5503460f94bca0af/html5/thumbnails/9.jpg)
Estimate of gas in-place• 49.4 – 134.6 trillion cubic feet (1.40 – 3.81
trillion cubic metres) and a reasonable central estimate is80.3 trillion cubic feet of gas (2.27 trillion cubic
metres) • This is an in-place resource (gas in the rocks)
not a reserve (what might be produced)• Drilling and testing of new wells is required to
assess the feasibility of production
![Page 10: The Carboniferous shales of the Midland Valley of Scotland: geology and resource estimation Mike Stephenson (BGS) Director of Science and Technology Presenting.](https://reader034.fdocuments.us/reader034/viewer/2022042822/56649ebf5503460f94bca0af/html5/thumbnails/10.jpg)
Where to get more
informationwww.gov.uk/oil-and-gas-onshore-exploration-and-production
www.bgs.ac.uk/shalegas
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Slides if needed for questions
![Page 12: The Carboniferous shales of the Midland Valley of Scotland: geology and resource estimation Mike Stephenson (BGS) Director of Science and Technology Presenting.](https://reader034.fdocuments.us/reader034/viewer/2022042822/56649ebf5503460f94bca0af/html5/thumbnails/12.jpg)
Bowland-Hodder822 – 1,329 – 2,281 tcf gas
Weald2.2 – 4.4 – 8.6 billion bbl oil
Midland Valley of Scotland49.4 – 80.3 – 134.6 tcf gas
3.2 – 6.0 – 11.2 billion bbl oil
![Page 13: The Carboniferous shales of the Midland Valley of Scotland: geology and resource estimation Mike Stephenson (BGS) Director of Science and Technology Presenting.](https://reader034.fdocuments.us/reader034/viewer/2022042822/56649ebf5503460f94bca0af/html5/thumbnails/13.jpg)
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Historical oil-shale mines
Location of historical shale mines from http://www.scottishshale.co.uk/GazMines/MineMaps/AAMinesField.html
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Area prospective for shale oil
![Page 16: The Carboniferous shales of the Midland Valley of Scotland: geology and resource estimation Mike Stephenson (BGS) Director of Science and Technology Presenting.](https://reader034.fdocuments.us/reader034/viewer/2022042822/56649ebf5503460f94bca0af/html5/thumbnails/16.jpg)
Area prospective for shale gas