Results 81 to 90 of about 808,448 (239)

Multiscale NMR Characterization in Shale: From Relaxation Mechanisms to Porous Media Research Frontiers

Energy Science &Engineering, Volume 13, Issue 11, Page 5777-5798, November 2025.
ABSTRACT Nuclear magnetic resonance (NMR), as an advanced non‐destructive and rapid measurement technology, has shown unique advantages in the evaluation of unconventional shale reservoirs. This paper systematically introduces the fundamental principles of NMR spectroscopy and relaxation theory in porous media and comprehensively analyzes the ...
Long Zhou, Guangzhi Liao, Ruiqi Fan, Rui Mao, Xueli Hou, Nan Li, Zhilong He, Yushu Zhang, Lizhi Xiao   +8 more
wiley   +1 more source

Some problems on the Rock-Eval pyrolysis analysis and data interpretation

, 1998
Petrol jeolojisi çalışmalarında çeşitli jeokimyasal ve petrografik analiz teknikleri bulunmakta olup, petrol kaynak kayasının ısısal olgunluk ve petrol oluşturma potansiyelinin belirlenmesinde hızlı bir yöntem olan Rock-Eval pirolizi kullanılmaktadır. Bu
Nazan Yalçın
core   +1 more source

Critical insights from Rock-Eval analysis of vitrains

, 2021
Rock-Eval S2 and S4 curves are commonly used to interpret active source rocks. In this work we report the formation of unusual, uneven, spiky S2 pyrograms from Rock-Eval of manually isolated vitrain bands from Mvb and Lvb coals. The spikes and unevenness
Hazra, Bodhisatwa, Singh, Deependra Pratap, Singh, Pradeep K, Chakraborty, Prasenjeet, Singh, Vivek, Gangopadhyay, Monalisa   +5 more
core   +2 more sources

Rock-Eval 6 Technology: Performances and Developments

, 2006
The Rock-Eval 6 apparatus is the latest version of the Rock-Eval product line, commercialized since 1996 by Vinci Technologies. The present work describes the methodology developed at IFP for reliable data acquisition and endorses the quality of ...
F. Behar, H. L. De B. Penteado, V. Beaumont   +2 more
core   +1 more source

Assessing Thermal Maturity of the Pendência Formation (Potiguar Basin) Using Vitrinite Reflectance and Raman Spectroscopy

Journal of Raman Spectroscopy, Volume 56, Issue 11, Page 1203-1214, November 2025.
Palynofacies assemblages from the onshore Potiguar Basin display a wide thermal maturity range, with vitrinite reflectance (%Ro) values of 0.46–2.72 measured from nine samples at depths of 1059–4443 m. A strong correlation exists between %Ro and Raman parameters, specifically the G‐band's full width at half maximum.
Gabriel A. Barberes, Dalva A. L. Almeida, Flávia C. Marques, Julliana F. Alves, Paulo H. M. Toledo, Rafael de Oliveira, Lenize F. Maia, Linus Pauling F. Peixoto, Antonio Carlos Sant'Ana, Celly M. S. Izumi, Gustavo F. S. Andrade, Dorval C. Dias Filho, Taissa R. Menezes, Delano M. Ibanez, Luiz Fernando C. de Oliveira   +14 more
wiley   +1 more source

The Spatial and Temporal Evolution of Mixed Carbonate‐Clastic Mud‐Dominated Basin Fill Successions: The Middle to Late Devonian Shelf Margin, Western Canada

Basin Research, Volume 37, Issue 6, November/December 2025.
The spatial interplay between updip clastic and carbonate depositional systems and downdip detrital and biogenic mud dominated depositional systems are mapped temporally using the sequence stratigraphic method to predict the occurrence of aquifers, petroleum reservoirs and organic‐rich deposits. ABSTRACT Middle to Upper Devonian strata preserved in the
Rene Jonk, Kevin Bohacs, Ken Potma
wiley   +1 more source

A study on assessment of hydrocarbon potential of the lignite deposits of Saurashtra basin, Gujarat (Western India)

International Journal of Coal Science & Technology, 2017
In the present investigation, Bhavnagar lignites of the Saurashtra basin (Gujarat) have been studied to assess their hydrocarbon generating potential. The samples of upper as well as lower lignite seams have been studied through microscopy and subjected ...
Prakash K. Singh, V. K. Singh, P. K. Rajak, Neeraj Mathur   +3 more
doaj   +1 more source

Activation Energy of Organic Matter Decomposition in Soil and Consequences of Global Warming

Global Change Biology, Volume 31, Issue 9, September 2025.
Activation energy (Ea) is the minimum energy necessary for (bio)chemical reactions defining reaction rates, e.g., organic matter transformations in soil. Based on the Ea database of enzyme activities, CO2 production, heat release during soil incubation, and thermal oxidation of soil organic matter, we assess the Ea of biotic and abiotic transformation ...
Ekaterina Filimonenko, Yakov Kuzyakov
wiley   +1 more source

Organic petrology and geochemistry of the Upper Ordovician-Lower Silurian Renheqiao Formation shales of the Baoshan Block, western Yunnan, China

International Journal of Coal Science & Technology
Lower Paleozoic black shales are important source rocks worldwide. The Upper Ordovician-Lower Silurian Renheqiao Formation of the Baoshan Block is a low-maturity equivalent of the Wufeng-Longmaxi (WF-LMX) Shale of the Sichuan Basin.
Yinlong Wang, Detian Yan, Bei Liu, Haijiao Fu, Qingling Jiang, Yin Yuan, Hui Tian   +6 more
doaj   +1 more source

Estimation of the Oil-in-Place Resources in the Liquid-Rich Shale Formations Exploiting Geochemical and Petrophysical Data in a 3D High-Resolution Geological Model Domain: Baltic Basin Case Study

Geofluids, 2020
The paper discusses the issue of oil-in-place estimation for liquid-saturated shales in Lower Paleozoic (Silurian and Ordovician) organic-rich formations of the Baltic Basin in North Poland.
Krzysztof Sowiżdżał, Tomasz Słoczyński, Weronika Kaczmarczyk   +2 more
doaj   +1 more source