On the mechanism of change in DPEP/ETIO ratio with maturity

Journal Article · Wed Sep 01 04:00:00 EDT 1993 · Geochimica et Cosmochimica Acta; (United States)

DOI:https://doi.org/10.1016/0016-7037(93)90501-M· OSTI ID:5326031

Sundararaman, P ^[1]

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1. Chevron Oil Field Research Co., La Habra, CA (United States)

The DPEP/ETIO and Porphyrin Maturity Parameter (PMP) have been used as maturity indicators of source rocks and oils. Investigation of the cause for the change in PMP with maturity using isothermal and nonisothermal pyrolysis techniques show that it is principally due to differences in the rates of decomposition of DPEP and ETIO porphyrins. At early stages of maturation, release of bound vanadyl ETIO porphyrins from the kerogen contributes to the change in PMP.

• OSTI ID: 5326031
• Journal Information: Geochimica et Cosmochimica Acta; (United States), Journal Name: Geochimica et Cosmochimica Acta; (United States) Vol. 57:18; ISSN GCACAK; ISSN 0016-7037
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
BIOLOGICAL MARKERS
CARBOXYLIC ACIDS
CHEMICAL REACTIONS
DECOMPOSITION
ENERGY SOURCES
FOSSIL FUELS
FUELS
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
MATURATION
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PETROLEUM
PORPHYRINS
SOURCE ROCKS