Source Rock Characterization Method for Petroleum Exploration

Espitalié, J.; Madec, Morgan; Tissot, Bernard P.; Mennig, JJ; Leplat, P.

doi:10.4043/2935-ms

Cited by 363 publications

(252 citation statements)

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“…Organic carbon content (C org ) and total sulfur were determined for each sample using a LECO analyzer after decarbonation with HC1. Each sample was also subjected to whole-rock pyrolytic assay using the Rock-Eval system described by Espitalié et al (1977). Selected samples underwent pyrolysis-gas chromatography, as described by Colling et al (1986).…”

Section: Methodsmentioning

confidence: 99%

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Pyrolytic Assay of Samples from Site 799

Katz¹

1992

Proceedings of the Ocean Drilling Program

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Pyrolysis techniques were used to characterize the organic matter contained within the penetrated section and to assess the presence of heavy hydrocarbon shows. The Rock-Eval data indicate a change in organic hydrogen enrichment within the middle Miocene sequence. It appears that the level of organic enrichment may be controlled by sedimentation rate, while the organic hydrogen enrichment, as shown in the hydrogen index, may reflect differences in preservation potential. Higher sedimentation rates would result in higher organic carbon contents. Higher hydrogen index values would reflect higher degrees of organic preservation resulting from more restricted circulation.The entire penetrated section is thermally immature and has not entered into the main phase of thermal hydrocarbon generation. Neither the Rock-Eval nor the pyrolysis-gas chromatographic data indicate the presence of thermally mature, migrated, heavy hydrocarbons. This absence of mature, heavy hydrocarbons includes Cores 128-799B-65R and 128-799B-66R, which exhibited cut fluorescence onboard the ship. Therefore, the fluorescence is considered to have resulted from indigenous, thermally immature bitumens.

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Section: Methodsmentioning

confidence: 99%

“…This interpretation is accomplished using the hydrogen (mg "S 2 " HC/g C org ) and oxygen (mg CO 2 /g C org ) indexes and a modified van Krevelen-type diagram, as described by Espitalié et al (1977).…”

Section: Rock-eval Pyrolysismentioning

confidence: 99%

Pyrolytic Assay of Samples from Site 799

Katz¹

1992

Proceedings of the Ocean Drilling Program

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“…There are numerous closed-systems pyrolysis such as: hydrous pyrolysis confined (gold tube) pyrolysis and Micro Scale Sealed Vessel (MSSV). Espitalié et al (1977) published the first paper on the development and application of the Rock-Eval Pyrolysis. This technique is considered a more cost-effective means of geochemical kerogen typing than elemental analysis because prior kerogen separation is not required.…”

Section: Rock-eval Pyrolysis and Hidrouspyrolysismentioning

confidence: 99%

“…According Espitalié et al (1977), the ratio of mg HC in S2/g TOC is called Hydrogen Index (HI). The ratio of mg CO 2 in S3/g TOC is called Oxygen Index (OI).…”

Section: Rock-eval Pyrolysismentioning

confidence: 99%

Organic Facies: Palynofacies and Organic Geochemistry Approaches

Filho¹,

Rgo²,

Mendona³

et al. 2012

Geochemistry - Earth's System Processes

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“…Rock-Eval analysis is described by Espitalié et al (1977) and Clementz et al (1979). Pyrolysis provides a rapid measure of hydrocarbon generative potential, maturation, and the degree of oxidation of whole-sediment samples.…”

Section: Pyrolysis Analysis (Rock-eval)mentioning

confidence: 99%

Analysis of Organic Matter from Leg 81 (Rockall Plateau)

Kaltenback¹,

Guennel²,

Lyons³

et al. 1984

Initial Reports of the Deep Sea Drilling Project

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Organic geochemical and visual kerogen analyses were carried out on approximately 50 samples from Leg 81 (Rockall Plateau, North Atlantic). The sediments are from four sites (Sites 552-555), Pleistocene to Paleocene in age, and represent significantly different depositional environments and sources of organic matter.The Pleistocene glacial-interglacial cycles show differences in sedimentary organic matter based on Rock-Eval pyrolysis, organic phosphorus, and pyrolysis/mass-spectrometry analyses. Glacial samples contain more organic carbon, with a larger proportion of reworked organic matter. This probably reflects increased erosion of continental and shelf areas as a result of low sea level stands. Inter glacial samples contain a larger proportion of marine organic matter as determined by organic phosphorus and pyrolysis analyses. This immature, highly oxidized marine organic matter may be associated with the skeletal organic matrix of calcareous organisms. In addition, Rock-Eval data indicate no significant inorganic-carbonate contribution to the S 3 pyrolysis peak.The Pliocene-Miocene sediments consist of pelagic, biogenic carbonates. The organic matter is similar to that of the Pleistocene interglacial periods; a mixture of oxidized marine organic matter and reworked, terrestrial detritus.The Paleocene-Oligocene organic matter reflects variations in source and depositional factors associated with the isolation of Rockall from Greenland. Paleocene sediments contain primarily terrestrial organic matter with evidence of in situ thermal stress resulting from interbedded lava flows. Late Paleocene and early Eocene organic matter suggests a highly oxidized marine environment, with major periods of deposition of terrestrially derived organic matter. These fluctuations in organic-matter type are probably the result of episodic shallowing and deepening of Rockall Basins. The final stage of Eocene/Oligocene sedimentation records the accelerating subsidence of Rockall and its isolation from terrestrial sources (Rockall and Greenland). This is shown by the increasingly marine character of the organic matter.The petroleum potential of sediments containing more than 0.5% organic carbon is poor because of their thermal immaturity and their highly oxidized and terrestrial organic-matter composition.

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Source Rock Characterization Method for Petroleum Exploration

Cited by 363 publications

References 0 publications

Pyrolytic Assay of Samples from Site 799

Pyrolytic Assay of Samples from Site 799

Organic Facies: Palynofacies and Organic Geochemistry Approaches

Analysis of Organic Matter from Leg 81 (Rockall Plateau)

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