Dynamic characterization of viscoelasticity during polymer flooding: A two-phase numerical well test model and field study
Available online 29 April 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,...
Share article
Experimental study of acid fracturing behavior in carbonate reservoirs with different fracture-cavity development
Available online 29 April 2025
Heterogeneity in carbonate formations due to discontinuities (e.g., fractures and cavities) will bring about distinctive acid stimulation effects. However, the differences in fracturing behavior between...
Share article
Research on the in-situ catalytic pyrolysis of heavy oil by 2D layered MOF and its catalytic mechanism
Available online 29 April 2025
China possesses abundant heavy oil resources, yet faces challenges such as high viscosity, underdeveloped production technologies, and elevated development cost. Although the in-situ catalytic viscosity-reduction...
Share article
Deep learning-assisted optimization for enhanced oil recovery and CO2 sequestration considering gas channeling constraints
Available online 28 April 2025
Carbon dioxide Enhanced Oil Recovery (CO2-EOR) technology guarantees substantial underground CO2 sequestration while simultaneously boosting the production capacity of subsurface hydrocarbons (oil and...
Share article
Study on S-wave velocity prediction in shale reservoirs based on explainable 2D-CNN under physical constraints
Available online 28 April 2025
The shear wave (S-wave) velocity is a critical rock elastic parameter in shale reservoirs, especially for evaluating shale fracability. To effectively supplement S-wave velocity under the condition...
Share article
Numerical analysis of dispersion, attenuation, and seismic effects in a porous rock saturated with three-phase immiscible fluids
Available online 26 April 2025
Multiphase flow in porous rock is of great importance in the application of many industrial processes, including reservoir delineation, enhanced oil recovery, and CO2 sequestration. However, previous...
Share article
A new model for determining the effective permeability of tight reservoirs based on Fractal-Monte Carlo method
Available online 24 April 2025
In contrast to conventional reservoirs, tight formations have more complex pore structures and significant boundary layer effect, making it difficult to determine the effective permeability. To address...
Share article
A thermo-associating copolymer integrated with biogenic nanosilica as a novel viscosifier in low solid drilling fluids
Available online 23 April 2025
Smart low-solid drilling fluids (SLSDFs) with thermo-controllable rheological properties and attractive thickening characteristics have recently captivated profound attention due to their low formation...
Share article
Enhancing shale oil recovery with water-alternating-CO2 injection through radial borehole fracturing
Available online 23 April 2025
This paper introduces a novel approach combining radial borehole fracturing with Water-Alternating-Gas (WAG) injection, enabling simultaneous WAG injection and shale oil production in a single vertical...
Share article
A dual-scale failure evaluation method for Carbon-glass hybrid Fiber sucker rod and their joints under complex loads
Available online 22 April 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...
Share article
A large-scale, high-quality dataset for lithology identification:Construction and applications
Available online 21 April 2025
Lithology identification is a critical aspect of geoenergy exploration, including geothermal energy development, gas hydrate extraction, and gas storage. In recent years, artificial intelligence techniques...
Share article
The genesis and accumulation mechanism of CBM in the typical mid- to low-rank coal-bearing basins
Available online 17 April 2025
The composition and isotopic characteristics of coalbed methane (CBM), as well as the genesis of CH4 and CO2, associated geological process and migration-accumulation model of CBM in typical mid- to...
Share article
Experimental investigation on cross-layer propagation of hydraulic fractures in shale-sandstone interbedded reservoirs
Available online 17 April 2025
China's shale oil and gas resources are widely distributed in shale-sandstone interbedded reservoirs, whose complex lithology and strong heterogeneity pose significant challenges to hydraulic fracturing...
Share article
A novel method for predicting formation pore pressure ahead of the drill bit by embedding petrophysical theory into machine learning based on seismic and logging-while-drilling data
Available online 17 April 2025
Formation pore pressure is the foundation of well plan, and it is related to the safety and efficiency of drilling operations in oil and gas development. However, the traditional method for predicting...
Share article
Effects of multiphase transport in multiscale pore network on carbon storage and enhanced shale oil recovery: An experimental and numerical study
Available online 16 April 2025
CO2 injection in shale oil reservoirs has emerged as a promising technique for simultaneously achieving CO2 geological storage and enhancing shale oil recovery. This study investigates the potential...
Share article
Pressure characterization study in the jet influence zone of riser based on HHT analysis
Available online 16 April 2025
By large-scale cold mold experiments, pressure pulsation signals within the jet influence zone of riser reactor are processed by using Hilbert-Huang analysis (HHT) in this study. Effects of different...
Share article
In-situ temperature-pressure preserved coring for onshore deep oil and gas exploration: research on the design principles and mechanical properties of the temperature-preserved core chamber
Available online 11 April 2025
A novel temperature-preserved core chamber designed for depths exceeding 5000 m has been developed to enhance the scientific understanding of deep oil and gas reservoirs. This temperature-preserved...
Share article
Systematic Modeling and Methodological Approaches for Optimizing Gas Storage Facility Design with Fluctuating Hydraulic Characteristics
Available online 11 April 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...
Share article
Multichannel seismic resolution enhancement via spectral fitting for thin reservoir characterization
Available online 11 April 2025
As seismic signals propagate underground, the subsurface media absorb high–frequency components, decreasing seismic resolution and limiting the identification and characterization of thin reservoirs....
Share article
The flow field characteristics and rock breaking ability of cone-straight abrasive jet, rotary abrasive jet, and straight-rotating mixed abrasive jet
Available online 11 April 2025
Radial jet drilling technology (RJD) is expected to be a technology for the efficient exploitation of geothermal resources. However, the low rock-breaking efficiency is the major obstacle hindering...
Share article
Natural fractures and their effectiveness in deep tight sandstone reservoirs of foreland thrust belts in the southern Junggar Basin, China
Available online 11 April 2025
Strong tectonic activities and diagenetic evolution encourage the development of natural fractures as typical features in deep tight sandstone reservoirs of foreland thrust belts. This study focused...
Share article
Efficient numerical modeling scheme for solving fractional viscoacoustic wave equation in TTI media and its application in reverse time migration
Available online 10 April 2025
Amplitude dissipation and phase dispersion occur when seismic waves propagate in attenuated anisotropic media, affecting the quality of migration imaging. To compensate and correct for these effects,...
Share article
Hybrid deep learning framework with spatiotemporal pattern extraction for decant oil solid content soft sensor development in Fluid Catalytic Cracking Units
Available online 4 April 2025
Coking at the fractionating tower bottom and the decant oil circulation system disrupts the heat balance, leading to unplanned shutdown and destroying the long period stable operation of the Fluid Catalytic...
Share article
A new method for the rate of penetration prediction and control based on signal decomposition and causal inference
Available online 4 April 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....
Share article
Research on small molecule wetting agent for drilling fluids applied in Antarctic drilling engineering
Available online 3 April 2025
Antarctica contains numerous scientific mysteries, and the Antarctic ice sheet and its underlying bedrock contain important information about the geological structure of Antarctica and the evolutionary...
Share article
