Shale Oil

994 Words4 Pages
Shale Oil
A new player -at least in the United States- is entering in the game with a lot of enthusiasm among some of the audience, and a lot of skepticism by some others, that this unconventional player will overtake the conventional ones any time soon. Although, Big hops are held on the new player in the future. This new player is oil shale. The number estimated of oil shale in place in the US is around 4.28 trillion Barrel. An immense amount that’s even hard to imagine. Unfortunately, this amount is not 100% recoverable and the actual recoverable amount is unknown due to the lack of economic methods of recovery. The extraction of economic quantities of oil shale will be true in the near future due to
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Electricity generators or simply heaters can be placed on surface or in the well bore. Surface heaters are better for maintenance issues. The heated shale oil is then extracted by separate dedicated production wells.
After pyrolysis and electrofracking, comes rubbulization the third approach to the economic recovery of shale oil. This approach was taken by Chevron Oil Company. Rubbulization is breaking a zone of reservoir into separate chunks of rock .In other words, generating fractures in the three dimensions. while heated carbon dioxide is used for the decomposition Kerogen in oil shale. The process involves drilling vertical wells into the oil shale formation and applying horizontal fractures induced by injecting carbon dioxide through drilled wells and then pressured through the formation for circulation through the fractured intervals to rubbulize the production zone. Rubbulization propellants and explosives may be used. The used carbon dioxide then is routed to the gas generator to be reheated and recycled. The remaining organic matter in previously heated and depleted zones is combusted in-situ to generate the heated gases required to process successive intervals of treated wells. These gases would then be pressured from the depleted zone into the newly fractured portion of the formation and the process would be repeated. After that, the hydrocarbon fluids are brought up in conventional vertical oil wells as any other conventional
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