The Py-GC/MS results of the study carried out on two groups of vitrinites (perhydrous and non-perhydrous) of di€erent age and properties and on a trimaceralic coal associated with one of the perhydrous group are discussed. Such a study provides information about the e€ect of natural hydrogen enrichment on vitrinite structure at the molecular level. Moreover, the in ̄uence of the di€erent conditi...

The study of the petrographic structure medium- and high-rank coals is important from both a cognitive utilitarian point view. constituents their individual characteristics features are responsible for properties coal way it behaves in various technological processes. This paper considers application convolutional neural networks images segmentation. U-Net-based model segmentation was proposed....

An accurate understanding of molecular structure evolution during pyrolysis is essential for the clean utilization coal. In this study, middle-rank coal was taken as research subject, and vitrinite inertinite samples were stripped from using a hand picking sink–float separation process. situ Fourier transform infrared (FTIR) spectroscopy in X-ray diffraction (XRD) performed to compare macromole...

Ditch samples from AP-4, ER-51 and UK-2 offshore Niger Delta were subjected to biostratigraphic organic geochemical analyses which entail foraminiferal, palynological, Spore Colour Index (SCI), Rock-Eval Pyrolysis Fourier Transform Infrared Spectroscopy (FTIR) analyses. The results have established N19 N17; N17, N16 N15; N9 N8 biozones; P600 P700 palynological zones. dominance of palynomaceral ...

Recently, deep and ultra-deep shales (depth >3500 m) of the Lower Paleozoic Wufeng–Longmaxi formations (WF–LMX) have become attractive targets for shale gas exploration development in China, their contents may be influenced by occurrence water to some extent. However, content its distribution different nanopores rarely been reported. In this study, a suite WF–LMX samples (5910–5965 m depth) ...

Abstract A comparative analysis on source rock properties has been carried out the Miocene-Pliocene formations as well Quaternary terrace deposits using Rock–Eval pyrolysis results and organic petrography some biomarkers results. Samples were obtained from outcrops of deposits, Pliocene-aged Liang Formation together with Miocene Miri Setap Shale in Brunei-Muara district, sample lithologies rang...