Shale oil eduction

Claim 1

A CONTINUOUS METHOD FO RECOVERING OIL FROM AN OIL-CONTAINING SHALE WHICH COMPRISES MAINTAINING A LIQUID BODY COMPRISING LIQUID EDUCTION PRODUCTS BELOW A VERTICAL TREATING ZONE, PASSING SAID SHALE THROUGH SAID LIQUID BODY INTO SAID TREATING ZONE, MAINTAINING A LEVEL OF HOT LIQUID EDUCTION PRODUCTS IN SAID HOPPER ABOVE THE BOTTOM OPENING OF SAID KILN THEREBY PREVENTING THE INGRESS OF AIR, DRAWING SAID SHALE DOWN THROUGH SAID HOT LIQUID EDUCATION PRODUCTS INTO A FEEDING DEVICE SUBMERGED IN SAID HOT EDUCATION PRODUCTS, INITIALLY PREHEATING SAID SHALE, FORCING SAID SHALE UPWARDLY IN SAID VERTICAL KILN WHEREIN SAID SHALE IS FURTHER HEATED WITH A HEATED FLUID MEDIUM FLOWING COUNTERCURRENTLY THERETO CAUSING THEREBY THE CONDENSATION OF A PORTION OF SAID FLUID MEDIUM, CAUSING SAID SHALE HEATED BY SAID HEATED MEDIUM TO CONTINUE TO FLOW UPWARDLY IN SAID KILN, COUNTERCURRENTLY CONTACTING SAID UPWARDLY FLOWING HEATED SHALE WITH AN EDUCATION MEDIUM COMPRISING HOT FLUE GASES AND STEAM WHEREBY THE MAJOR JPORTION OF SAID OIL IN SAID SHALE IS EDUCTED THEREFROM AND FLOWS COUNTERCURRENTLY TO SAID UPWARDLY FLOWING SHALE TOGETHER WITH SAID EDUCTION MEDIUM TO FORM SAID FLUID MEDIUM, CONTACTING SAID UPWARDLY FLOWING SHALE FROM WHICH SAID MAJOR PORTION OF SAID OIL HAS BEEN EDUCTED WITH STEAM AND AN OXYGEN-CONTAINING GAS TO INDUCE COMBUSTION OF THE REMAINING PORTION OF OIL IN SAID SHALE TO FURNISH SAID EDUCATION MEDIUM, CONTACTING SAID SHALE FROM WHICH SAID REMAINING PORTION OF SAID OIL HAS BEEN BURNED WITH WATER TO COOL SAID SHALE AND TO UTILIZE THE SENSIBLE HEAT TO COMBUSTION TO VAPORIZE SAID WATER TO FURNISH SAID STEAM FOR SAID EDUCATION MEDIUM, DISCHARGING THE COOLED SHALE FROM THE UPPER PORTION OF SAID VERTICAL TREATING ZONE, ALLOWING SHALE FINES TO SETTLE IN SAID LIQUID BODY, CONTINUOUSLY REMOVING LIQUID EDUCATION PRODUCTS FROM THE UPPER PART OF SAID LIQUID BODY TO MAINTAIN A CONSTANT LEVEL OF SAID LIQUID THEREIN, CONTINUOUSLY REMOVING GASES FROM THE LOWER PORTION OF SAID TREATING ZONE AT A POINT ABOVE THE SAID LIQUID LEVEL AND AFTER USAGE THEREOF TO PREHEAT SAID SHALE, AND REMOVING ACCUMULATED FINES FROM THE BOTTOM OF SAID LIQUID BODY.