Results 51 to 60 of about 6,759,086 (168)

Multistage alkaline permanganate degradation of a type II kerogen

open access: yes, 1984
The products of a 27-step alkaline permanganate degradation of a type II kerogen from a sample of Toarcian shale, Paris Basin, have been studied. The high yield of oxidation products consisted of 1.86% neutrals and bases, 24.48% ether-soluble acids, and ...
Jacquesy, Jean Claude   +3 more
core   +1 more source

Re-Evaluating Petroleum Play of the Late Triassic Sediments to Find Oil in the Upper Yangtze Region

open access: yesGeosciences
The upper late Triassic Xujiahe Formation (T3x) is the most important terrigenous stratum gas province, with accumulated gas production over 3TCF, technical recoverable resources at 18TCF (500BCM) and geological reserve close to 50TCF (1TCM), in the ...
Bo Zheng   +4 more
doaj   +1 more source

Source Rock Characteristic of Sargelu and Kurrachine Formations from the Selected Wells in Northern Iraq

open access: yesIraqi Geological Journal, 2021
A total of 56 cuttings samples of Sargelu and Kurrachine formations from different wells (Ain Zalah, Baiji, and Jabal Kand) in northern Iraq have been investigated in this study.
Arwa M. S. Al-Dolaimy
doaj   +1 more source

Porosity Preservation in Deeply Buried (8500 m) Jurassic Calcareous Mudstones of the Vienna Basin (Austria)

open access: yesTerra Nova, Volume 38, Issue 5, Page 306-313, October 2026.
ABSTRACT Significant porosity of more than 5% was found at depths of more than 8500 m in poorly sorted, calcareous mudstones of the Malmian Mikulov Formation. These overpressured rocks are the main hydrocarbon source rock in the Vienna Basin. Core samples from present‐day depths of 8150 m to 8550 m were analysed using X‐ray diffraction and scanning ...
Susanne Gier   +3 more
wiley   +1 more source

Evaluation of organic matters, hydrocarbon potential and thermal maturity of source rocks based on geochemical and statistical methods: Case study of source rocks in Ras Gharib oilfield, central Gulf of Suez, Egypt

open access: yesEgyptian Journal of Petroleum, 2015
In this study, we apply geochemical and statistical analyses for evaluating source rocks in Ras Gharib oilfield. The geochemical analysis includes pyrolysis data as total organic carbon (TOC%), generating source potential (S2), production index (PI ...
Mohamed M. El Nady   +3 more
doaj   +1 more source

Determination of hydrocarbon generation potential of a non-isothermal pyrolysis of Faraghun and Sarchahan Formations in Coastal Fars and the Persian Gulf, Iran

open access: yesChina Geology, 2021
Source rock assessment is a key step in any petroleum exploration activity. The results of Rock-Eval analysis showed that Sarchahan Formation was in the late oil window, while the Faraghun and Zakeen Formations were just in the early stages of the oil ...
Younes Jalilian, Mohammad Hossein Saberi
doaj   +1 more source

COMPARISON OF THE THERMOBITUMINIZATION KINETICS OF BALTIC OIL SHALE IN OPEN RETORTS AND AUTOCLAVES; pp. 17–25 [PDF]

open access: yesOil Shale, 2010
The kinetic models deduced for description of laboratory low-temperature pyrolysis of Baltic oil shale in open retorts and autoclaves are discussed. The apparent activation energies and frequency factors (E1-E4 and A1-A4) estimated for the two devices ...
Ille Johannes, L. TIIKMA, A. ZAIDENTSAL
doaj   +1 more source

Raman Line Scan Analyses and a New Hypothesis for the Formation of Anatase‐Hosting Microbialites: Study of the Stromatolites From Saint‐Jean‐de‐la‐Rivière, Cotentin, France

open access: yesJournal of Raman Spectroscopy, Volume 57, Issue 8, Page 1463-1480, August 2026.
Micrometer analysis of millimeter lines of Raman spectra concludes in the association of anatase and graphitized organic matter (graphogen). The photosynthetic microorganisms at the origin of the microbialites produce O2, which is transformed by TiO2 into reactive species that, in turn, decompose the organic matter of the microorganisms. ABSTRACT Raman
Marie‐Paule Bassez
wiley   +1 more source

Role of bitumen and NSOs during the decomposition process of a lacustrine Type-II kerogen in semi-open pyrolysis system

open access: yes, 2020
The purpose of this work is to investigate the generation characteristics of bitumen, NSO compounds, oil, and HC compounds during the artificial maturation of a lacustrine Type-II kerogen (which has not been given enough attention before) in order to ...
Hou, Lianhua   +6 more
core   +1 more source

The Ames impact structure, Oklahoma: New radioisotopic constraints and implications for North American impact chronology

open access: yesMeteoritics &Planetary Science, Volume 61, Issue 8, Page 2103-2139, August 2026.
Abstract The Ames impact structure (Oklahoma) is thought to have formed during the Ordovician Meteor Event, based on conodont biostratigraphy of its crater fill. Here, U–Pb zircon dates from its impact‐melt portion, conducted using secondary ion mass spectrometry and laser ablation–inductively coupled plasma–mass spectrometry (n = 37 spots), yield a ...
Elizabeth J. Catlos   +9 more
wiley   +1 more source

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