In situ thermal processing of an oil shale formation
First Claim
Patent Images
1. A method of treating an oil shale formation in situ, comprising:
- providing heat from a plurality of heaters located in a plurality of wellbores to a least a portion of the formation during an in situ heat treatment process,allowing a temperature of the portion of the formation to decrease following the in situ heat treatment process;
injecting a heated first fluid into a part of the portion having a decreased temperature;
providing heat from the first fluid to the portion having the decreased temperature; and
producing a second fluid from the formation.
0 Assignments
0 Petitions
Accused Products
Abstract
A method of treating an oil shale formation in situ includes allowing a temperature of a portion of the formation to decrease. The portion has previously undergone an in situ heat treatment process. A first fluid is injected into a part of the portion and a second fluid is produced from the formation.
-
Citations
19 Claims
-
1. A method of treating an oil shale formation in situ, comprising:
-
providing heat from a plurality of heaters located in a plurality of wellbores to a least a portion of the formation during an in situ heat treatment process, allowing a temperature of the portion of the formation to decrease following the in situ heat treatment process; injecting a heated first fluid into a part of the portion having a decreased temperature; providing heat from the first fluid to the portion having the decreased temperature; and producing a second fluid from the formation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A method of treating an oil shale formation in situ, comprising:
-
providing heat directly from a plurality of heaters located in a plurality of wellbores to a least a portion of the formation during an in situ heat treatment process, controlling the heat providing from the plurality of heaters to maintain an average temperature of the portion below a dissociation temperature of carbonate minerals in the portion; allowing a temperature of the portion of the formation to decrease following the in situ heat treatment process; injecting a first fluid into a part of the portion having a decreased temperature; and producing a second fluid from the formation.
-
Specification