Depositional environment and source potential of the different organic-rich levels of Devonian age (up to 990m thick) from the onshore EC-1 well (Southern Tunisia) were investigated based on the analysis of more than 130 cutting samples by different geochemical techniques (Rock-Eval pyrolysis, GC-MS). The obtained results including Rock Eval Pyrolysis data and biomarker distribution (terpanes, ...

The present study focuses on source rock evaluation of the Sargelu Formation by using core chips rocks collected from well Atrush-2, Duhok, Kurdistan Region-Iraq. Rock-Eval pyrolysis and vitrinite reflectance were executed. Subsequently, selected parameters used for 1-D Basin Modelling calibration. upper part formation mainly comprises argillaceous limestone with low content organic matter (0.6...

Abstract The Piedemonte Llanero Basin is located on the eastern side of Eastern Cordillera Colombian Andes. It has been subject numerous geological studies carried out for oil sector, mainly. This study presents coal-petrographical features 15 coal seams four formations from Late Cretaceous to Middle Miocene (Chipaque formation, Palmichal group, Arcillas del Limbo and San Fernando formation). A...

In order to explore the graphitization characteristic differences between vitrinite and inertinite in coal, this study conducted high-temperature thermal simulation experiments (at five temperature points: 1800°C, 2100°C, 2400°C, 2700°C, 3000°C) using inertinite-rich vitrinite-rich samples as precursors. The quantitative comparison for evolution characteristics of their graphite lattice was car...

Underground coal gasification (UCG) is a conversion method that permits resources to be exploited in situ using high-temperature reactions. An understanding of the chemical, mineralogical, and petrographic properties coal, resultant unburned carbon, degasified ash (minerals) UCG zone, fundamental determining rates, gas composition, environmental groundwater risk assessments. This study aims pro...

China hosts rich shale gas resources. The Longmaxi Formation (LF) in the Sichuan Basin is one of important regions for exploration and extraction. Here, we investigate pore structure factors influencing gas-bearing characteristics pores reservoirs LF. We employed scanning electron microscopy (SEM), X-ray diffraction analysis (XRD), content testing, saturation testing based on nuclear magnetic r...

Qilian Mountain is the only permafrost area in China where natural gas hydrates have been obtained through scientific drilling. Many studies performed on regions from perspectives of sedimentology and petroleum geochemistry, especially reservoir forming conditions exploration methods. However, there are still more divergences its evolutionary process, time, accumulation mechanism. In this study...

Marine-continental transitional shale, as an important shale type, gains less attention than marine and continental which restricts the exploration development process of marine-continental gas. In this study, Upper Permian Longtan Formation in southern Sichuan Basin was taken research object, organic matter characteristics, hydrocarbon generation ability, mineral composition, physical properti...

The composition of oil trapped in fluid inclusions (FI), occurring mineral cements, can provide valuable insights into migration. Here, FI oils a calcite vein (representing expelled fluids) and source rock (SR) extracts retained bitumen) from the Hosszúhetény Calcareous Marl Formation (HCMF) Mecsek Mountains area Hungary were investigated to assess how organic compounds are fractionated during ...