OOIR: Observatory of International Research

Papers

(The H4-Index of International Journal of Coal Geology is 30. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2020-11-01 to 2024-11-01.)

Article	Citations
X-ray tomography imaging of shale microstructures: A review in the context of multiscale correlative imaging	85
Fracture variation in high-rank coal induced by hydraulic fracturing using X-ray computer tomography and digital volume correlation	53
Impact of thermal maturity on the diagenesis and porosity of lacustrine oil-prone shales: Insights from natural shale samples with thermal maturation in the oil generation window	53
A comprehensive review of deep coalbed methane and recent developments in China	51
Comprehensive evaluation of potential coal mine dust emissions in an open-pit coal mine in Northwest China	48
Mineralogical and geochemical characteristics of altered volcanic ashes (tonsteins and K-bentonites) from the latest Permian coal-bearing strata of western Guizhou Province, southwestern China	48
Evaluation of gas-in-place content and gas-adsorbed ratio using carbon isotope fractionation model: A case study from Longmaxi shales in Sichuan Basin, China	45
First insights into mineralogy, geochemistry, and isotopic signatures of the Upper Triassic high‑sulfur coals from the Thai Nguyen Coal field, NE Vietnam	43
Depositional environment, thermal maturity and shale oil potential of the Cretaceous Qingshankou Formation in the eastern Changling Sag, Songliao Basin, China: An integrated organic and inorganic geoc	42
Thermal evolution behavior of the organic matter and a ray of light on the origin of vitrinite-like maceral in the Mesoproterozoic and Lower Cambrian black shales: Insights from artificial maturation	41
A review of spatially resolved techniques and applications of organic petrography in shale petroleum systems	40
Mineral matter in the Pennsylvanian coal from the Yangquan Mining District, northeastern Qinshui Basin, China: Enrichment of critical elements and a Se-Mo-Pb-Hg assemblage	39
The molecular model of Marcellus shale kerogen: Experimental characterization and structure reconstruction	39
Geological controls on the distribution of REY-Zr (Hf)-Nb (Ta) enrichment horizons in late Permian coals from the Qiandongbei Coalfield, Guizhou Province, SW China	36
Paleo-depositional environment, origin and characteristics of organic matter of the Triassic Chang 7 Member of the Yanchang Formation throughout the mid-western part of the Ordos Basin, China	36
Morphology, chemical and mineralogical composition of magnetic fraction of coal fly ash	36
Particle size and mineralogy distributions in respirable dust samples from 25 US underground coal mines	35
Geological factors controlling variations in the mineralogical and elemental compositions of Late Permian coals from the Zhijin-Nayong Coalfield, western Guizhou, China	35
Numerical investigation of the effects of proppant embedment on fracture permeability and well production in Queensland coal seam gas reservoirs	34
Geochemistry of two high-lithium content coal seams, Shanxi Province, China	34
Identification of thin-layer coal texture using geophysical logging data: Investigation by Wavelet Transform and Linear Discrimination Analysis	33
Evidence for the repeated occurrence of wildfires in an upper Pliocene lignite deposit from Yunnan, SW China	33
Understanding coal quality and the critical importance of comprehensive coal analyses	32
Advancing the application of atomic force microscopy (AFM) to the characterization and quantification of geological material properties	32
Structural compartmentalization and its relationships with gas accumulation and gas production in the Zhengzhuang Field, southern Qinshui Basin	31

A multidisciplinary study and palaeoenvironmental interpretation of middle Miocene Keles lignite (Harmancık Basin, NW Turkey), with emphasis on syngenetic zeolite formation	30
Detachment of coal fines deposited in proppant packs induced by single-phase water flow: Theoretical and experimental analyses	30
A novel NMR surface relaxivity measurements on rock cuttings for conventional and unconventional reservoirs	30
Distribution of Li, Ga, Nb, and REEs in coal as determined by LA-ICP-MS imaging: A case study from Jungar coalfield, Ordos Basin, China	30
Critical metal recovery potential of Appalachian acid mine drainage treatment solids	30
The influence of paleoclimate and a marine transgression event on organic matter accumulation in lacustrine black shales from the Late Cretaceous, southern Songliao Basin, Northeast China	30