Hydrocarbon generative features of the Upper Triassic Kössen marl from W. Hungary
The organic matter of the Kössen Marl accumulated in an anoxic environment is supposed to be an oil prone sequence. A verification of this assumption is attempted in this paper by determining its organic facies and its petroleum potential. The relationship lithology and hydrocarbon generative featur...
Saved in:
| Main Author: | |
|---|---|
| Format: | Article |
| Published: |
University of Szeged, Department of Mineralogy, Geochemistry and Petrology
Szeged
1989
|
| Series: | Acta mineralogica-petrographica
30 |
| Kulcsszavak: | Kőzettan, Ásványtan, Földtan |
| Subjects: | |
| Online Access: | http://acta.bibl.u-szeged.hu/24776 |
| Summary: | The organic matter of the Kössen Marl accumulated in an anoxic environment is supposed to be an oil prone sequence. A verification of this assumption is attempted in this paper by determining its organic facies and its petroleum potential. The relationship lithology and hydrocarbon generative features of the Kössen Marl was studied. One part of the samples was chosen from a shallow corehole consisting of mainly dolomite. The other part of the samples originated from three subdivisions of a corehole drilled in the vicinity of the previous one. The subdivisions were the following: calcareous marl, marl and silstone. The petroleum potential and the hydrogen index of the dolomite indicated a good source rock of Organic Facies B. The calcareous marl proved to be a typical example of the excellent oil producing matter. It had high petroleum potential and its organic facies was nearly AB. The marl also seemed to be a very good source rock. However, its petroleum potential was less than half of the value measured in the previous subdivision and its organic facies was BC. The siltstone of Organic Facies D was found to be a nongenerative rock. The hydrocarbon generative features mentioned above were checked on two selected samples by simulating the catagenesis under laboratory conditions by performing a thermal degradation. KEYWORDS : hydrocarbon generative features, kerogen types, organic facies, petroleum potential, source rock, thermal degradation. |
|---|---|
| Physical Description: | 137-147 |
| ISSN: | 0365-8066 |