Pyromat II Micropyrolysis of Source Rocks and Oil Shales: Effects of Native Content and Sample Size on T_max Values and Kinetic Parameters

Technical Report · Tue Jan 01 00:00:00 EST 1991

DOI:https://doi.org/10.2172/6268983· OSTI ID:6268983

Reynolds, John G. ^[1]; Murray, Ann ^[1]

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1. Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

The Pyromat 2 micropyrolyzer can routinely measure kinetics on standard shales and source rocks. However, when examining samples which have high native bitumen contents, samples with high TOC and native bitumen contents, asphaltenes, tar sands, and other non-kerogen type materials, the pyrolysis profiles sometimes deviate from normal expected behavior. Some of the deviant features are: (1) evolution before the maximum assigned to kerogen breakdown, (2) broadening of the maximum assigned to kerogen breakdown and shifting in T_max with increasing sample size, and (3) artifacts in activation energy distributions derived in kinetic analyses. This report examines these features in more detail and offers potential experimental solutions to circumvent problems created by these features.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE Office of Defense Programs (DP)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6268983
• Report Number(s): UCRL-ID-106505; ON: DE91007996
• Country of Publication: United States
• Language: English

Related Subjects

04 OIL SHALES AND TAR SANDS
47 OTHER INSTRUMENTATION
KEROGEN
PYROLYSIS
OIL SHALES
CHEMICAL REACTION KINETICS
PYROMETERS
PERFORMANCE TESTING
SOURCE ROCKS
ASPHALTENES
BITUMENS
CHEMICAL COMPOSITION
OIL SANDS
SAMPLING
SOLVENT EXTRACTION
ASPHALTS
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
DECOMPOSITION
ENERGY SOURCES
EXTRACTION
FOSSIL FUELS
FUELS
KINETICS
MATERIALS
MEASURING INSTRUMENTS
ORGANIC COMPOUNDS
ORGANIC MATTER
OTHER ORGANIC COMPOUNDS
REACTION KINETICS
SEPARATION PROCESSES
TAR
TESTING
THERMOCHEMICAL PROCESSES
040500* - Oil Shales & Tar Sands- Properties & Composition
040402 - Oil Shales & Tar Sands- Surface Methods
440500 - Thermal Instrumentation- (1990-)