Decomposition studies of oil shale
A kinetic study was made on the decomposition of oil- shale kerogen. This was done by heating the sample in a closed retort and monitoring the gaseous products of decomposition. Based on the kinetic study and also on the information made available by earlier investigators, a new 2-step model for kerogen pyrolysis was proposed which more adequately fits all the evidence. It was found that heated natural gas could be used to produce adequate quantities of a high API gravity, low pour-point oil. The treatment of the oil shale with heated natural gas caused a considerable increase in the porosity and permeability of the sample, and opened the underlying material for thermal treatment. The use of a higher heating rate caused a delay in the appearance of the oil. High natural gas flow rates resulted in increased oil yields and an increase in the quality of the oil. The effect of high pressures was to promote extensive polymerization. The product oils were found to be primarily paraffinic in nature and were low in sulfur, nitrogen, and oxygen.
- OSTI ID:
- 5988110
- Resource Relation:
- Other Information: Thesis (Ph.D.)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
KEROGEN
PYROLYSIS
DECOMPOSITION
FLUID FLOW
GAS INJECTION
HEATING
NATURAL GAS
OIL SHALES
PERMEABILITY
POLYMERIZATION
POROSITY
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
ENERGY SOURCES
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
MATERIALS
ORGANIC MATTER
THERMOCHEMICAL PROCESSES
020300* - Petroleum- Drilling & Production