Mining or in situ disintegration of hard material – Tunnel recovery of fluid material
Patent
1981-05-27
1983-10-18
Novosad, Stephen J.
Mining or in situ disintegration of hard material
Tunnel recovery of fluid material
166 50, 166245, 166252, 166263, 166272, E21B 4324, E21B 4330, E21B 4700, E21C 4110
Patent
active
044102160
ABSTRACT:
Improved methods and apparatus are provided for recovering high viscosity oils from sub-surface earth formations. In particular, a large diameter shaft hole is employed and a plurality of substantially horizontal drill holes extend radially from the shaft hole into the formation. It is a feature of this invention to provide vertically spaced drill holes oriented to improve the recovery of the oil. Methods are provided for further enhancing oil recovery by coordinating the injected fluid with the location of injection within the formation.
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Ranney, "The First Horizontal Oil Well", The Petroleum Engineer, Jun. 1939, pp. 25-30.
Heavy Oil Process, Inc.
Novosad Stephen J.
Suchfield George A.
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