China University of Petroleum, East China

Experimental study on early scour resistance of solidified sludge for protection of tripod suction bucket foundations

Using dredged marine sludge as a scour-protection material offers a route to reuse waste while protecting offshore foundations, but its early-age resistance under hydrodynamic loading remains insufficiently quantified. This study evaluates a novel five-component binder system (ce...

Two-phase flow simulation in low-permeability heterogeneous reservoirs with a fully implicit scheme-based enriched physics-informed neural network

Two-phase flow simulation in low-permeability heterogeneous reservoirs is challenging because low-velocity non-Darcy flow, capillary pressure, fractures, and heterogeneity produce tightly coupled and highly nonlinear pressure–saturation equations. A Fully Implicit Scheme-based En...

Towards edge-deployable non-destructive testing: A hardware-aware lightweight framework for real-time phased array ultrasonic testing of girth welds

Phased Array Ultrasonic Testing (PAUT) for pipeline girth welds is transitioning to automated diagnostics. However, integrating deep learning into portable PAUT instruments is bottlenecked by conflicts between precision and limited computational resources. This paper proposes You...

Evaluation of gasification agent strategies for underground coal gasification in post-ECBM reservoirs: A coupled thermo-hydro-chemical numerical simulation approach

Implementing underground coal gasification (UCG) in post-ECBM reservoirs, namely coal reservoirs after CO 2 -enhanced coalbed methane (CO 2 -ECBM) recovery, provides a potential pathway for residual energy recovery. However, the pre-existing CO 2 -rich environment alters reservoi...

Production prediction of shale gas reservoirs during CO2 huff-and-puff based on inflow performance relationship curves

China is endowed with abundant shale gas resources and considerable development potential; however, shale gas production frequently declines rapidly after the initial development stage. CO 2 huff-and-puff has emerged as a promising technique for enhancing shale gas recovery. To a...

Energy, exergy and economic analysis of bioinspired wick solar desalination leaf

Freshwater scarcity and energy constraints have driven the development of low-carbon and efficient solar desalination technologies. To address the salt accumulation and thermal bridge heat loss commonly encountered in conventional wick solar stills, this study proposes a bioinspi...

High-fidelity computational fluid dynamics driven by exploratory active incremental learning: Characterizing oscillating cylinders from subcritical to critical Reynolds numbers

The operating Reynolds number of offshore risers often transitions from the subcritical to the critical Reynolds number range at engineering application, which results in distinctly different vortex-induced vibration (VIV) responses. Consequently, such complexities challenge both...

Windmill‐Type π ‐Extension Within Donor Moiety of Covalent Organic Framework Boosts Overall Photocatalytic Hydrogen Peroxide Production

ABSTRACT Covalent organic framework (COF)‐based catalysts are promising for overall photocatalytic hydrogen peroxide (H 2 O 2 ) production, yet the sluggish kinetics of water oxidation reaction (WOR) and inefficient charge carrier processes limit the catalytic performance. Herein...

Spatially Decoupled Electron and Lithium Storage at Fe/Solid Electrolyte Interphase Interfaces

ABSTRACT Extra lithium storage in transition‐metal nanoparticles remains debated because interfacial reactions are difficult to distinguish. Using Fe/C as a model anode, we combine in situ electron paramagnetic resonance (EPR) and magnetometry to resolve two concurrent storage pr...

CO2 Gas Channel Identification in the CCUS-EOR Process Based on the Fuzzy Comprehensive Evaluation Method

In CO2 flooding, variations in mobility and formation heterogeneity may cause gas to traverse high-permeability or interconnected channels, leading to ineffective gas circulation. This limits recovery rates, ultimately leading to reduced financial benefits. Consequently, the iden...

Random-Forest Prediction of Shear-Wave Slowness from Conventional Well Logs for Geomechanical Applications: A Two-Well Case Study

The aim of this study is to evaluate whether a random-forest model trained on conventional well logs can reconstruct missing shear-wave slowness (DTS) with sufficient transparency for downstream geomechanical calculations. Field-acquired DTS and 12 conventional curves from Well A...

Experimental study on gas fracturing behavior of damaged basalt in compressed air energy storage caverns

Compressed air energy storage (CAES) caverns excavated in hard rock experience repeated mechanical disturbance during construction and cyclic gas pressurization during operation, which may progressively degrade surrounding rock and influence fracture stability. To investigate gas...

Experimental and numerical investigation of liquid film phase change in textured mechanical seals with inner herringbone and spiral grooves

Liquid film phase change is a critical factor in the performance degradation of mechanical seals. However, experimental data regarding the evolution of phase change and groove-type differences for typical hydrodynamic grooves such as inner herringbone and inner spiral grooves are...

Large tunneling magnetoresistance in room temperature magnetic tunnel junctions based on altermagnetic XV2Y2O

This work presents a comprehensive investigation of spin-dependent quantum transport properties of the emerging layered room temperature metallic altermagnet family X V 2 Y 2 O ( X = K, Rb, Cs; Y = S, Se, Te), based on first-principles calculations combined with the non-equilibri...

Surface‐Charge‐Regulated Porous Water for Interfacial Phase‐Transition Control

Angstrom-confined water in porous scaffolds is sensitive to interfacial electrostatics, yet cross-material predictability is limited because pore geometry and surface chemistry change simultaneously. This work introduces Surface-Charge-Regulated Porous Water (SCR-PW) as a tunable...

A self-supervised multi-task framework for downhole fault diagnosis in oil fields: Enhancing temporal feature learning under limited labels

In newly developed oil fields, the accumulation of historical labeled data is relatively scarce, making it challenging to obtain large volumes of annotated data. To address this challenge, this paper proposes a downhole fault diagnosis framework based on a complex self-supervised...

Coupling Simulation of Drilling Behavior in Cavity Bottom Sediments of Salt Cavern Gas Storage

In terrestrial salt cavern gas storage facilities in regions such as Jintan, China, the development of mud interlayers in the formation causes sediment to accumulate at the bottom of the cavern after water-based dissolution, occupying nearly half of the effective storage capacity...

How does digital industry agglomeration affect the environmental efficiency of power systems in China

Existing research has largely overlooked the impact of fixed-sum outputs in power system efficiency assessment, whereas studies on digital industry agglomeration (DIA) have focused almost exclusively on geographical agglomeration and have neglected the role of virtual agglomerati...

Laminae Control on Pore Space Heterogeneity in Lacustrine Lucaogou Formation: Insights from SANS Studies

Abstract Laminated shales in the Lucaogou Formation exhibit strong pore heterogeneity, and the quantitative relationship between lamina types and pore structure remains poorly constrained. This study investigates how different laminae control pore distribution, connectivity, and...

Multi-Objective Energy-Efficient Train Timetable Optimization in Urban Rail Transit via a Hybrid DRL-NSGA-III Framework

Urban rail transit systems face a pronounced contradiction between escalating traction energy consumption and passenger service quality under the carbon peaking and carbon neutrality goals. This study proposes a hybrid optimization framework offline combining deep reinforcement l...