Shale oil and source rock samples of the Carboniferous Keluke Formation from well Chaiye 2 in Delingha Depression were analyzed by gas chromatography–mass spectrometry. Source rocks highly mature at generation stage with vitrinite reflectance (Ro) 1.45–1.88%. However, produced shale reservoir was characterized abundant biomarkers but low abundance diamondoid hydrocarbons estimated Ro ca. 0.78%,...

Shales contain magnetic minerals generally at very low concentrations. In the early stages of diagenesis, inherited are altered, while nanominerals formed. this study, we proposed a study shales over stratigraphic thickness 1.3 km from borehole in Paris basin (Borehole EST 433, France), and same formation (Opalinus Clay) collected seven boreholes Jura molasse (Swiss). Magnetic measurements expe...

The mud shale of Qingshankou Formation in Songliao Basin is the main rock source and contains rich oil resources. successful development depends on evaluating optimizing “sweet spots”. To accurately identify optimize favorable sweet spots Formation, Basin, original logging data were preprocessed this paper. Then thin interlayer was identified effectively by using processed data. Based artificia...

Abstract A regional 2D conceptual model was constructed to study the hydrocarbon systems associated with Middle Sarvak source rock (Cenomanian) in southeastern Persian Gulf basin. The cross section used for this purpose 135 km long and encompassed a total of 17 depositional units Late Jurassic Surmeh Formation at base Aghajari/Mishan sequences top. Compositional type II-S kinetics considered ro...

The aim of this work was to study the ignition behaviour eight coals different coal ranks, petrographic compositions, and places origin. research allows us gain deeper insight into mechanism relationship between certain properties their during ignition. methodology utilised standard fuel ASTM data, analysis, pyrolysis oxidation reactivity, characteristics generated through lab-scale tests using...

Coal is a porous medium with complex pore structures. The characteristics of the pore structure play an important role in various aspects of coal use, including extraction of methane from coal seams, CO2 sequestration in coal, and water purification by activated carbon. To describe comprehensively the pore structure of coal, we apply transmission electron microscopy (TEM) and synchrotron small-...

A novel stochastic Bayesian estimation method is introduced for the purpose of suppressing specular reflectance in endoscopic imagery, benefiting both computer aided and manual analysis of endoscopic data. The maximum diffuse chromaticity, which is necessary for the calculation of the specular reflectance, is estimated via Bayesian least-squares minimization, with the posterior probability of m...

Understanding the effect of coalification on diffusion methane in middle-high rank coals (MHRC) is fundamental for optimizing coalbed (CBM) drainage strategies. Safe coal mining relies critically this approach. Hence, CH4 adsorption/desorption experiments and a new model were used to study behavior five different metamorphic degree from China. The results indicate that, as vitrinite reflectance...

Fifty-four coal clast samples in the siliciclastic rocks (e.g., sandstone and conglomerate) were collected from cores of two-deep research wells (K20H K20K) drilled at Kozlu coalfield Zonguldak Basin, for first time, they evaluated using mineralogy by XRD SEM-EDX random vitrinite reflectance (%Rr) measurements order to find out their origin timing. Petrographic observations on polish surfaces s...