Schlumberger has bought Raytheon microwave oil recovery technology. They can retrieve four to five barrels of oil (EROEI 4-5) for every barrel of oil consumed in the process. Other methods have reported 1 1/2 to three barrels (EROEI 1.5-3) for each one consumed.
Because microwaves can generate heat faster than convection heating, shale can be adequately heated to extract oil within a month or two of beginning production activities, rather the year or longer for other methods, Raytheon says.
This technology could help unlock 800 billion barrels of recoverable oil from oil shale in the USA.
Hat tip to Al Fin