Elemental fingerprint-based microstructure identification method for deep coal-seam horizontal wells: A case study of No. 8 coal seam of Carboniferous Benxi Formation in Ordos Basin, NW China
August 2026
To address the problem of high-precision microstructure identification in the deep No. 8 coal seam of Carboniferous Benxi Formation in the Ordos Basin, “elemental fingerprints” of the deep coal seam...
Molecular dynamics simulation of helium adsorption-diffusion behavior in nanopores of anthracite from Permian Shanxi Formation in Qinshui Basin, China
August 2026
To understand the occurrence and migration mechanisms of helium in coal-measure gas, this study investigated anthracite from No. 3 coal seam of Lower Permian Shanxi Formation in the Jincheng mining...
A transient and steady state integrated evaluation framework for interwell connectivity in fractured-vuggy reservoirs
August 2026
To address the challenges of uncertain interwell injection-production relationships, high monitoring costs, and limited production data that constrain reliable interwell-connectivity evaluation during...
Hydrocarbon micro-migration characteristics and accumulation model of ultra-deep shale: A case study of Permian Dalong Formation in Well Tiebei 1 L-HF in northeastern Sichuan Basin, SW China
August 2026
The hydrocarbon accumulation patterns of ultra-deep marine shale in the northeastern Sichuan Basin remain unclear. Taking the Permian Dalong Formation in Well Tiebei 1 L-HF in the Puguang area, northeastern...
Effects of reservoir heterogeneity on oil displacement efficiency and spatial utilization during coordinated construction of oil reservoir-based underground gas storage
August 2026
Based on the geological characteristics of the JD reservoir-based underground gas storage (UGS) facility, two-dimensional visual plate physical models representing vertical and areal heterogeneity were...
Theory of relative homogeneity in low-permeability reservoirs
August 2026
Based on the geological characteristics and development practices of low-permeability oil and gas resources in China, this study extends the conventional understanding that such reservoirs are typically...
Wellbore stability issues from exothermic pyrite oxidation causing temperature anomalies in the Pliocene Cisubuh Formation, onshore North West Java Basin, Indonesia
August 2026
The localized thermal anomalies caused by exothermic pyrite oxidation and their geomechanical implications in the Pliocene Cisubuh Formation of the onshore North West Java Basin are investigated in...
Quantitative characterization of tectonic characteristics of intraplate small-displacement strike-slip faults: A case study of the FI17 strike-slip fault zone in the Fuman Oilfield, Tarim Basin, NW China
August 2026
Intraplate small-displacement strike-slip faults cannot be identified accurately and quantitatively analyzed quantitatively by conventional techniques. To clarify the tectonic characteristics and deformation...
Multiple hydrocarbon accumulation models and new exploration areas in the Paleozoic strata in the western margin of the Ordos Basin, NW China
August 2026
Based on the latest high-precision gravity, magnetic and three-dimensional seismic exploration data in the western margin of the Ordos Basin, the fine analysis of Paleozoic tectonic system and the re-understanding...
Synergistic modification mechanisms of nano-modified slickwater system for enhanced oil recovery in tight oil reservoirs
August 2026
To address two main challenges, i.e. insufficient proppant support in hydraulic fractures and limited oil mobilization from the matrix, in tight oil reservoirs, this study proposes a concept of “fracturing...
A fluid identification method for deep low-porosity buried-hill reservoirs based on coupled energy spectrum-time spectrum pulsed neutron logging
August 2026
This work addresses the challenge of fluid identification in complex low-porosity buried-hill reservoirs in the Bohai Sea by developing a fluid identification method based on the coupled responses of...
Permeability logging method and its application based on pure Stoneley waves induced by continuous low frequency planar shock waves
August 2026
Shock-tube core experiments have provided an important finding, that is, the low frequency acoustic field generated by planar shock waves can induce pure Stoneley waves in a borehole, with their amplitude...
Near-wellbore three-dimensional non-planar fracture propagation model
August 2026
To address the computational challenges of 3D non-planar fracture propagation near the wellbore during hydraulic fracturing, a hybrid numerical model based on the Displacement Discontinuity/Fictitious...
New insights and exploration directions for Ordovician platform-margin reef-shoal fault-karst reservoirs in the Manxi area, Tarim Basin, NW China
August 2026
Based on data including seismic interpretation, well logs and core slice, analyses were conducted on seismic reflection patterns, stages and distribution of faults, planar distribution of sedimentary...
Astronomical cycle framework and carbonate platform evolution of Permian Longtan Formation–Triassic Feixianguan Formation in Sichuan Basin, SW China
August 2026
Based on data from cores, well logs, seismic profiles, and carbon isotopic compositions, this study constrains the chronostratigraphic framework using carbon isotopic excursion events and applies cyclostratigraphic...
Differential enrichment mechanisms and quantitative evaluation on controlling factors of organic matter in Cambrian Qiongzhusi Formation shale in Deyang-Anyue rift trough, Sichuan Basin, China
August 2026
Based on microscopic observations, total organic carbon (TOC) content measurements, and major, trace, and rare earth element analyses of core samples from the Cambrian Qiongzhusi Formation shale at...
Differential development mechanisms and prediction of reservoirs in the 4th Member of Sinian Dengying Formation on eastern side of Deyang-Anyue rift, Sichuan Basin, China
August 2026
Reservoirs of the 4th member of the Sinian Dengying Formation (Deng-4 Member) around the Deyang-Anyue intraplatform rift in the Sichuan Basin are highly heterogeneous, alongside with unclear genesis...
Discovery of the Permian Chengdu–Santai volcanic paleo-uplift and its control on sedimentary reservoirs in Western Sichuan Basin, China
August 2026
Based on core observations, thin section identification, well logging and seismic data of the Permian strata in the western Sichuan Basin, this study systematically discusses the constraints of Middle...
Formation model of Fengshun hydrothermal geothermal system in Cathaysian orogenic system
August 2026
Taking the Fengshun hydrothermal geothermal field in the Cathaysian orogenic system as an example, this study incorporates orogenic belt background elements into geothermal system and geothermal prediction...
Three-dimensional multi-level fracture propping technique for full-domain propped fracturing: A case study of shale oil and gas reservoir stimulation
August 2026
Effective propping of multi-stage fractures is challenging in shale oil and gas reservoirs stimulated by full-domain propped fracturing. This paper discusses the three-dimensional multi-level fracture...
Flow wave wireless communication technology for water injection wells
August 2026
Considering that pressure wave wireless communication technology for water injection wells is limited in transmission success rate and efficiency, this study leverages the propagation characteristics...
“Component flow” of shale oil and its significance for sweet spot evaluation in the Permian Lucaogou Formation, Jimsaer Sag, Junggar Basin, China
June 2026
Considering the complex occurrence environment and significant compositional variation of continental shale oil, as well as the uncertainties in its mobility and producible amount, this study employs...
Innovation and practice of the whole petroleum system theory: A new paradigm for “all strata, all types, all domains” petroleum exploration
June 2026
The whole petroleum system (WPS) theory represents a significant innovation proposed to address the limitations of the classical petroleum system theory. The successful application of this theory has...
Generation stages and genetic types of coal-rock gas in China
June 2026
Based on the molecular structure transitions, hydrocarbon composition, and reservoir characteristics changes during coal evolution, combined with the production characteristics of coal-rock gas, the...
Geological characteristics and natural gas exploration targets of the Jurassic coal-measure whole petroleum system in Northwest China
June 2026
Coal-measure whole petroleum system is generally featured by dual-source multi-reservoir coupling, coexistence of three dynamic fields controlling hydrocarbon accumulation, and sequential accumulation...
