Lecture 7 – Oil Shale and Tar Sands

Lecture 7 – Oil Shale and Tar Sands -...

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Lecture 7 – Oil Shale and Tar Sands Tar Sands Viscous Call it Bitrmen Unconformity Traps Oil Alberta, Canada – Lots of Tar Sand Location of Tar Sands Tar is just above deep basin and unconformity because it came up due to plates Processing of Tar Sand 1) Free bitumen from sand wash - physical 2) Modify bitumen – chemical o Remove Sulfur o Add Hydrogen Sand Wash Process of Tar Sand Tailing Pond is the Sand Sending out Bitumen Modifying Bitumen Hydrocracker – Breaking long oil molecules to short molecules In the process, breaking off sulfur and taking it out Hydrotreaters – Add Hydrogen to Make it Burn Better – More Energy Refinery - Oil, Gasoline, Kerosene Net Products Based on Oil Sand Found and Used Oil Sand (2100 kg) Becomes Tailings Sand (1900 kg) or Bitumen (200 kg) Bitmen (200 kg) becomes gross coke (41 kg), sulphur (5.1 kg),
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Unformatted text preview: synthetic crude (142 kg), fuel gas (16.5 m 3 ) Tar Sands - Environment Impact • Environment Impact of Spreading Sand Over Area – Leads to Toxicity of Land • Can we mine without surface disturbance? o Maybe by sending steam down heating the tar and then pumping out the oil – (channeling) Oil Shales • World supply of oil shale is 2.6 trillion barrels of recoverable oil • 1.0-1.2 trillion barrels are in United States • USA can have more oil than anyone in the world with oil shale’s • Oil shale = source rock • Catagenesis • Oil shale is mature source rock • Tar sand is displace oil • Major oil shale basins in western US Oil Shales – Major process Steps in Mining and Surface Retorting • Mining and Crushing o Retorting Oil upgrading Oil to refinery o Spent shale disposal on-site Reclamation...
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Lecture 7 – Oil Shale and Tar Sands -...

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