Withdrawal of gases and liquids from an in situ oil shale retort
An in situ oil shale retort is formed within a subterranean formation containing oil shale. The retort contains a fragmented permeable mass of formation particles containing oil shale. A production level drift extends below the fragmented mass, leaving a lower sill pillar of unfragmented formation between the production level drift and the fragmented mass. During retorting operations, liquid and gaseous products are recovered from a lower portion of the fragmented mass. A liquid outlet line extends from a lower portion of the fragmented mass through the lower sill pillar for conducting liquid products to a sump in the production level drift. Gaseous products are withdrawn from the fragmented mass through a plurality of gas outlet lines distributed across a horizontal cross-section of a lower portion of the fragmented mass. The gas outlet lines extend from the fragmented mass through the lower sill pillar and into the production level drift. The gas outlet lines are connected to a gas withdrawal manifold in the production level drift, and gaseous products are withdrawn from the manifold separately from withdrawal of liquid products from the sump in the production level drift.
- Assignee:
- Occidental Oil Shale Inc
- Patent Number(s):
- US 4357051
- OSTI ID:
- 6616673
- Resource Relation:
- Patent File Date: Filed date 2 Jun 1980; Other Information: PAT-APPL-155411
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
OIL SHALES
IN-SITU RETORTING
SHALE GAS
RECOVERY
SHALE OIL
EXPLOSIVE FRACTURING
FLUID FLOW
GAS FLOW
SEPARATION EQUIPMENT
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COMMINUTION
DECOMPOSITION
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FRACTURING
FUELS
GASES
IN-SITU PROCESSING
MATERIALS
MINERAL OILS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PROCESSING
RETORTING
040401* - Oil Shales & Tar Sands- In Situ Methods
True & Modified