Porosity prediction based on improved structural modeling deep learning method guided by petrophysical information
June 2025
Porosity is an important attribute for evaluating the petrophysical properties of reservoirs, and has guiding significance for the exploration and development of oil and gas. The seismic inversion is...
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Extracting useful information from sparsely logged wellbores for improved rock typing of heterogeneous reservoir characterization using well-log attributes, feature influence and optimization
June 2025
The information from sparsely logged wellbores is currently under-utilized in reservoir simulation models and their proxies using deep and machine learning (DL/ML). This is particularly problematic...
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Diffraction classification imaging using coordinate attention enhanced DenseNet
June 2025
In oil and gas exploration, small-scale karst cavities and faults are important targets. The former often serve as reservoir space for carbonate reservoirs, while the latter often provide migration...
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Dynamic characterization of viscoelasticity during polymer flooding: A two-phase numerical well test model and field study
June 2025
Polymer flooding is an important means of improving oil recovery and is widely used in Daqing, Xinjiang, and Shengli oilfields, China. Different from conventional injection media such as water and gas,...
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Differential adsorption characteristics in the composite model of deep marine shale: Implication from molecular dynamics simulations
June 2025
Shale gas serves as a significant strategic successor resource for future oil and gas reserves and production in China. Thus, a profound understanding of the adsorption mechanism of shale gas in shale...
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Synergistic stabilization of emulsions by microspheres and surfactants for enhanced oil recovery
June 2025
During oil displacement, surfactants often encounter challenges such as emulsion instability and channeling, which can compromise their efficiency. To address these issues, polymer microspheres were...
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The flow field characteristics and rock breaking ability of cone-straight abrasive jet, rotary abrasive jet, and straight-rotating mixed abrasive jet
June 2025
Radial jet drilling (RJD) technology is expected to be a technology for the efficient exploitation of geothermal resources. However, the low rock-breaking efficiency is the major obstacle hindering...
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Study on an improved saturation parameter method based on joint inversion of NMR and resistivity data in porous media
June 2025
CO2 storage capacity is significantly influenced by the saturation levels of reservoir rocks, with underground fluid saturation typically evaluated using resistivity data. The conductive pathways of...
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Simultaneous seismic inversion of effective stress parameter, fluid bulk modulus, and fracture density in TTI media
June 2025
Predictions of fluid distribution, stress field, and natural fracture are essential for exploiting unconventional shale gas reservoirs. Given the high likelihood of tilted fractures in subsurface formations,...
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Systematic modeling and methodological approaches for optimizing gas storage facility design with fluctuating hydraulic characteristics
June 2025
As the proportion of natural gas consumption in the energy market gradually increases, optimizing the design of gas storage surface system (GSSS) has become a current research focus. Existing studies...
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Effects of gas components on acid-rock reaction during CO2-contained industrial waste gas (CO2-contained IWG) injection into deep shale reservoir on geologic time scale
June 2025
The shortage of CO2 source and the challenges associated with the separation of pure CO2 have led to a growing interest in the potential utilization of CO2-contained IWG. Therefore, this study has established...
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Characterization and optimization of oil–gas interfacial tension during CO2/N2 injection in heavy oil reservoirs: Experimental study and regression model
June 2025
CO2/N2 injection in heavy oil reservoirs has been demonstrated to enhance oil recovery (EOR) and facilitate CO2 capture, utilization, and storage (CCUS). Interfacial tension (IFT) is a crucial parameter...
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Paleo-fluid evolution in the Lower-Middle Ordovician carbonate reservoirs of the Shunbei area, Tarim Basin
June 2025
Deep carbonate reservoirs affected by prominent strike-slip faults represent crucial targets in oil and gas exploration owing to their immense resource potential. However, the complex geological environments...
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A new method for the rate of penetration prediction and control based on signal decomposition and causal inference
June 2025
Offshore drilling costs are high, and the downhole environment is even more complex. Improving the rate of penetration (ROP) can effectively shorten offshore drilling cycles and improve economic benefits....
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A dual-scale failure evaluation method for Carbon-glass hybrid Fiber sucker rod and their joints under complex loads
June 2025
A hybrid fiber-reinforced polymer (HFRP) continuous sucker rod, comprising a carbon fiber-reinforced polymer (CFRP) core layer, a glass fiber-reinforced polymer (GFRP) winding layer, and a GFRP coating...
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Origins of steam-mediated selectivity improvement in the oxidative coupling of methane over MnOx-Na2WO4/SiC
June 2025
Oxidative coupling of methane (OCM) is one of the most promising approaches to produce ethylene and ethane (C2-hydrocarbons) in the post-oil era. The MnOx-Na2WO4/SiO2 system shows promising OCM performance,...
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OFC
June 2025
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TOC
June 2025
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Development strategies of a gas condensate reservoir with a large gas cap, thin oil rim, strong bottom water, and natural barriers
Available online 30 June 2025
The development of gas condensate reservoirs with a large gas cap, thin oil rim, strong bottom water, and natural barriers faces numerous challenges, including reservoir heterogeneity, coning effects,...
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A novel intermingled fractal model for predicting relative permeability in tight oil reservoirs considering microscopic pore geometry
Available online 26 June 2025
Accurately predicting relative permeability is an important issue in the research of multiphase flow in tight reservoirs. Existing predictive models typically rely on the capillary tube bundle model...
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Plugging mode of flaky lost circulation materials within fractures and mechanism to enhance pressure-bearing capacity for the plugging zone
Available online 25 June 2025
During drilling operations in deep fractured tight gas reservoirs, lost circulation of working fluid frequently occurs due to the formation's low pressure-bearing capacity. Adding lost circulation materials...
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Experimental study of dehydration performance of re-crosslinkable preformed particle gel during extruding through an open fracture
Available online 24 June 2025
Re-crosslinkable preformed particle gel (RPPG) has been considered to be one of the most promising gels for dealing with fracture and void space conduit (VSC) conformance problems. However, the dehydration...
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Flow characteristics of shale oil and its geological controls: A case study of the Lucaogou Formation in the Jimsar Sag, Junggar Basin
Available online 24 June 2025
The Lucaogou Formation in Jimsar has a significant development potential due to its massive shale oil resources. Nevertheless, the complex and heterogeneous lithology, coupled with unclear flow mechanisms,...
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Rift marginal coarse-grained sediment gravity flow deposits in the Eocene Dongying Depression, Bohai Bay Basin, China: Balancing tectonic and climatic controls
Available online 23 June 2025
Previous studies have indicated that sediment gravity flow deposits developed in lacustrine active extensional rift basins are primarily influenced by tectonics and to a lesser extent by climate. Our...
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Identification and Distribution Patterns of the Ultra-deep Small-scale Strike-slip Faults based on Convolutional Neural Network in Tarim Basin, NW China
Available online 23 June 2025
The isolated fracture-vug systems controlled by small-scale strike-slip faults within ultra-deep carbonate rocks of the Tarim Basin exhibit significant exploration potential. The study employs a novel...
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