Numerical investigations on T1-T2∗-based petrophysical evaluation in shale oil reservoir with complex minerals
November 2025
It is of great significance to evaluate the petrophysical properties in shale oil reservoir, which can contribute to geological storage CO2. Two-dimensional nuclear magnetic resonance (2D NMR) technology...
FDEM modeling of the fracture propagation behavior under the joint interaction of shale anisotropy and multi-lithologic stack
November 2025
Exploring the interaction between hydraulic fractures and complex geological conditions is critical for multilayered commingling production in the laminated continental shale oil reservoirs. In this...
Near-wellbore 3D velocity imaging inversion method based on array acoustic logging data
November 2025
The characterization of subsurface formations via the analysis of near-wellbore velocity profiles represents a crucial method in geophysical exploration. This technique enables the evaluation of key...
Experimental investigation into the fracture propagation behavior of horizontal well multi-stage and multi-cluster fracturing within the roof of crushed soft coal seams
November 2025
The effectiveness of horizontal well multi-stage and multi-cluster fracturing in the fractured soft coal seam roof for coalbed methane (CBM) extraction has been demonstrated. This study focuses on the...
Intelligent identification method for dissolution vugs in karst reservoirs of carbonate rocks using electrical image logs: The Dengying Formation reservoir in the Gaoshiti-Moxi block, Sichuan Basin
November 2025
Accurately characterizing the storage space of fractured-vuggy carbonate reservoirs is a major technical challenge in the efficient exploration and development of the petroleum industry. Electrical...
A dynamic unified well-killing model for synergistic regulation of multiple well-killing methods
November 2025
Ultra-deep and complex formations are characterized by narrow safety density windows and challenging well control. The combined use of multiple well-killing methods or temporary adjustments to well-killing...
Risk-based design method for gas storage wellbore structure using grey geological information
November 2025
Underground gas storage facilities play a crucial strategic role in ensuring the balance of natural gas supply and demand, addressing seasonal fluctuations, and responding to emergencies. The design...
Uncertainty-aware neural networks with manual quality control for hydraulic fracturing downhole microseismic monitoring: From automated phase detection to robust source location
November 2025
Passive microseismic monitoring (PMM) serves as a fundamental technology for assessing hydraulic fracturing (HF) effectiveness, with a key focus on accurate and efficient phase detection/arrival picking...
Control of fault transport ability on hydrocarbon migration and accumulation in the No. 4 structural zone of Nanpu Sag, Bohai Bay Basin, China
November 2025
The ability of faults to transport oil and gas is affected by multiple geological factors, and the effects of various factors on oil and gas migration and accumulation are complex. In this study, based...
Quantitative evaluation of brittleness anisotropy and its influencing factors in terrestrial shale
November 2025
Brittleness is pivotal in predicting shale reservoir quality and designing hydraulic fracturing strategies. However, intricate diagenetic environment of shale, characterized by distinct bedding structures,...
Analysis on adsorption capacity of coal, gas content and methane carbon isotope characteristics in coal: A case study from Southwestern Qinshui Basin, China
November 2025
The methane adsorption capacity, gas content, and carbon isotope characteristics of coal are crucial parameters that determine the productivity of coalbed methane (CBM) wells and their development potential....
Coking behavior during the cooling process of cracked hydrocarbon fuels: Characterization of coke and elucidation of condensation coking mechanism
November 2025
The active cooling technology of endothermic hydrocarbon fuels is a key way to solve the thermal protection of high-speed aircraft engines, but the condensation coking problem during engine shutdown...
Processing capacity allocation of multiple production system for gas field multi-stage development
November 2025
The multi-stage development strategy is often adopted in the gas field. However, when the productivity decline occurs, many large processing stations will be severely idle and underutilized, significantly...
Development and feasibility test of a fan-shaped hydrate simulator with a radius of 3 m
November 2025
Large-scale physical simulation is essential for advancing our understanding of natural gas hydrates exploitation mechanism. However, cylinder-shaped simulators often face challenges in balancing large...
A layer-specific constraint-based enriched physics-informed neural network for solving two-phase flow problems in heterogeneous porous media
November 2025
In this study, we propose a constraint learning strategy based on interpretability analysis to improve the convergence and accuracy of the enriched physics-informed neural network (EPINN), which is...
An experimental study of huff-and-puff oil recovery for tight-tuff heavy oil reservoirs by synergistic with viscosity reducer and CO2 utilizing online NMR technology
November 2025
The tight-tuff heavy oil reservoir exhibits severe heterogeneity and is characterized by high density, high viscosity, and a high wax content, posing significant challenges for its development. While...
An intelligent micro-nano capsule green hydrogel decorated with carbon quantum dots with delayed crosslinking characteristics for enhanced oil recovery in harsh reservoir
November 2025
Hydrogels are widely used in reservoir flow control to enhanced oil recovery. However, challenges such as environmental contamination from conventional crosslinkers, poor solubility of crosslinking...
Geochemistry and genesis of marine shallow gas in the Pearl River Mouth Basin (PRMB), South China Sea
November 2025
In the Pearl River Mouth Basin of the northern South China Sea, extensive commercial shallow gas reservoirs have recently been discovered. However, their formation mechanisms remain poorly constrained....
Effects of natural fractures in cap rock on CO2 geological storage: Sanduo Formation and Dainan Formation of the early Eocene epoch in the Gaoyou Sag of the Subei Basin
November 2025
During the CO2 injection and geological storage process, the integrity of the cap rock significantly influences the long-term safety of CO2 storage. Natural fractures within the cap rock serve as potential...
The formation mechanism of high-quality clastic rock reservoir controlled by coupling of “structure-lithofacies-fluid” in the foreland thrust belt in northern Kuqa, Tarim Basin, Northwestern China
November 2025
The formation mechanisms of deep high-quality reservoirs in the Dibei area of Kuqa Depression foreland thrust belt were investigated through an integrated multidisciplinary approach combining petrographic...
Joint PP and PS seismic inversion using predicted PS waves from deep learning
November 2025
Seismic AVO/AVA (amplitude-versus-offset or amplitude-versus-angle) analysis, based on prestack seismic angle gathers and the Zoeppritz equation, has been widely used in seismic exploration. However,...
Multivariate natural gas price forecasting model with feature selection, machine learning and chernobyl disaster optimizer
November 2025
The significance of accurately forecasting natural gas prices is far-reaching and significant, not only for the stable operation of the energy market, but also as a key element in promoting sustainable...
Physic-guided multi-azimuth multi-type seismic attributes fusion for multiscale fault characterization
November 2025
Accurate characterization of the fault system is crucial for the exploration and development of fractured reservoirs. The fault characterization technique based on multi-azimuth and multi-attribute...
Self-sealing control principle and technology of in-situ temperature pressure preserved coring for deep oil and gas
November 2025
Accurately evaluating the quality and scale of deep oil and gas reservoirs is the key to effectively exploring and developing deep oil and gas resources. Changes in temperature and pressure can cause...
Synergistic effects of chelating agents and surfactants for chemical EOR in carbonates
November 2025
Surfactants play a critical role in enhanced oil recovery (EOR) applications; however, their performance is often compromised in harsh reservoir conditions, such as high temperature and high salinity,...