...-rich coal seams and siltstone that are the most prospective gas-prone source rock units, with kerogen sources ranging from terrigenous to marine. The samples are generally immature, potentially suggesting gas migration from depth. Laminated mudstones exhibit higher average TOC and HI values compared...

...Dinesh Kumar; Ravi Sharma; Abhayanand Singh Maurya; Rajesh Pandey In hydrocarbon exploration, total organic carbon (TOC) content and Rock-Eval pyrolysis are commonly employed geochemical techniques that offer concise insights into kerogen type, effective source-rock identification and thermal...

... work highlights two distinct preservation modes within a single Burgess Shale–type Lagerstätte, possibly due to the complex interplay of decay, kerogenization, and pyritization. In total, 1,328 specimens and 25 species are reported from the BGB at Haikou ( Fig. 1 ; Tables S1–S2; Figs. S1–S3...

.... First, we present how to estimate the maturity level, TOC content, and organic porosity using logging data. Second, different from only considering the discrete-stage maturity, we establish a novel RPM in which a continuous kerogen maturation process serves as a key control condition. Furthermore, we...

...-01 well. The findings reveal that total organic content (TOC) and kerogen volume are present in significant volume, indicating the shale’s viability as a shale gas play. To evaluate shale brittleness (B) and to differentiate between ductile and brittle behavior, elastic parameters including acoustic...

... using total organic carbon, Rock-Eval pyrolysis, vitrinite reflectance, and kerogen element analysis. The results suggest that the Sokor1, Yogou, and Donga Formations are poor to excellent source rocks with type I, II, II-III, and III kerogen, and most of the samples are thermally mature and within...

...Norbert Péter Szabó ABSTRACT We develop a new alternative for the joint inversion of well logs to predict the volumetric and zone parameters in hydrocarbon reservoirs. Porosity, water saturation, shale content, kerogen, and matrix volumes are simultaneously estimated with the tool response function...

...André Revil; Ahmad Ghorbani; Zhaoyang Su; Hongzhu Cai; Xiangyun Hu ABSTRACT Source rocks for oil and gas are often associated with shales that are rich in pyrite and kerogen. Induced polarization is a suitable tool to characterize these formations. We develop a new experimental database of 43...

... carbon content and Rock-Eval pyrolysis of twenty-one cutting samples from a well. These samples displayed TOC values ranging from 0.21 to 2.04 wt.% and S2 values ranging from 0.09 to 2.14 mg HC/g rock. Analysis positioned all samples within the immature window zone with Type II/III and Type III kerogen...

.... In this study, the lower Paleozoic Silurian Longmaxi contact metamorphic shales from the north section of the Xuefeng Mountain tectonic zone of the South China block were taken as an example and the molecular structure of kerogen in these postmature Longmaxi shales was analyzed using laser Raman microprobe...

... saturations and are not productive. In the shallower Zhougongshan area, gas was generated by the cracking of kerogen in middle Permian source rocks. Regional tectonism formed normally pressured structural traps in fractured basaltic reservoirs. Multistage tectonism likely breached seals and allowed oil...

... distribution/connectivity of clay, pyrite, and kerogen networks on the effective conductivity of the rock and how this affects the assessment of water/hydrocarbon saturation. This quantification enables an understanding of when such components need to be considered in interpreting resistivity measurements...

...) diagram, most samples were classified as kerogen type III or IV, however, a mixed type II and III was also observed. These data suggest that the Organic Matter (OM) is of terrigenous origin with the occurrence of organofacies C, CD and D. The majority of the studied samples are found to be at mature...

... were used to evaluate the hydrocarbon source-rock potential, kerogen type and level of maturity of the hydrocarbons. The majority of studied samples show the occurrence of type IV kerogen. However, the Middle Jurassic (Callovian)–Upper Jurassic (Tithonian) carbonate sequence of the Samana Suk Formation...

... properties using well cuttings reveals consistent patterns of relatively low to fair total organic carbon (TOC). S2 values suggest a fair generation potential with a mixed Type II–III kerogen composition. Seismic facies analysis identifies five distinct categories with parallel attributes. Horizons from...

... application for fingerprinting oils generated by saline lacustrine source rock. To resolve this puzzle, semiclosed hydrous pyrolysis was conducted on typical saline lacustrine source rocks from the Qianjiang Formation (type I kerogen) and Xingouzui Formation (type II kerogen) sampled in the Jianghan Basin...

... Thickness, m The main type of kerogen R o v , % TOC, % Eastern Songliao Depressional Qingshankou Lake clays and 50–60 100–150 Ӏ 0.5–2.0 0.9–9.0   Bohai Bay Faulted Shahejie, Kong 2 mudstones 50–100 30–1000 Ӏ 0.5–2.0 1.5–10.0 Western Оrdos Depressional Chang 7...

...L.M. Burshtein; A.A. Deshin; T.M. Parfenova; E.S. Yaroslavtseva; A.N. Kozyrev; P.I. Safronov Abstract —The kinetic characteristics of kerogen (activation energy and frequency factor distributions of the initial generative potential) determine the dynamics of naphthide generation during catagenesis...

...Jier Zhao; Xinmin Ge; Yiren Fan; Jianyu Liu; Yiguo Chen; Lei Xing ABSTRACT Source rock properties such as kerogen type are critical for reservoir quality evaluation of unconventional oil and gas resources. However, determining the kerogen type is challenging due to the significant formation...

... geologic criteria each contain slightly different kinds of petroleum generated at different levels of thermal maturity. A thick overlying carbonate reservoir contains the kind of petroleum generated by the kerogen present in one underlying SR pay zone. The same source and maturity parameters demonstrate...