Method for maximizing shale oil recovery from an underground formation

Patent · Tue Aug 26 00:00:00 EDT 1980

OSTI ID:7019434

Sisemore, C J

A method for maximizing shale oil recovery from an underground oil shale formation which has previously been processed by in situ retorting such that there is provided in the formation a column of substantially intact oil shale intervening between adjacent spent retorts, which method includes the steps of back filling the spent retorts with an aqueous slurry of spent shale. The slurry is permitted to harden into a cement-like substance which stabilizes the spent retorts. Shale oil is then recovered from the intervening column of intact oil shale by retorting the column in situ, the stabilized spent retorts providing support for the newly developed retorts.

• Assignee: Department of Energy
• Patent Number(s): US 4219237
• OSTI ID: 7019434
• Resource Relation: Patent File Date: Filed date 30 Sep 1977; Other Information: PAT-APPL-838,274
• Country of Publication: United States
• Language: English

Related Subjects

04 OIL SHALES AND TAR SANDS
OIL SHALES
IN-SITU RETORTING
SHALE OIL
RECOVERY
SLURRIES
SPENT SHALES
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
DECOMPOSITION
DISPERSIONS
ENERGY SOURCES
FOSSIL FUELS
FUELS
IN-SITU PROCESSING
MATERIALS
MINERAL OILS
MIXTURES
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PROCESSING
RETORTING
SUSPENSIONS
040401* - Oil Shales & Tar Sands- In Situ Methods
True & Modified