A History of In-situ Oil Shale Production in Sweden

摘要

1. 152V electric heater wells were placed 2.2 m apart (hexagonal) 2. Heated to 400 °C in 4 months. 3. 180-m wide advancing at 140 m per year (17-m thick) 4. 26 boreholes/day or 6500 boreholes/year 5. Oil was higher quality than from surface retorting.