Numerical study on the aerothermal characteristics in the vacuum tube transportation system
Available online 26 March 2026
•We study the dynamic aerodynamic thermal characteristics of the vacuum tube transportation system•The generation of the shock waves and blockage effect intensify aerodynamic heating•The reflected compression...
Risk analysis of buried natural gas pipelines using an integrated cloud model and failure mode and effects analysis approach
Available online 25 March 2026
•A novel integrated FMEA method is proposed for risk analysis of pipelines safety.•The cloud model is used to handle randomness and uncertainty.•A synthetic dynamic weighting method is provided to determine...
Analytical and numerical studies on the nonlinear stability of the encased FGP-GPLs oval linings under mechanical loadings
Available online 24 March 2026
The functionally graded porous (FGP) linings reinforced by graphene platelets (GPLs) are applied to rehabilitate damaged pipes in practical engineering. The lining is susceptible to local buckling under...
Scenario construction and risk evolution of long-distance pipeline accidents: A data-driven integrated analytical framework
Available online 23 March 2026
•A theoretical framework for complex system is constructed from static factor analysis to dynamic evolution based on the STAMP•A combined method containing the association rule analysis, social network...
On-site Quantitative Risk Assessment of Urban Underground Pipelines Using Geo-Registered Augmented Reality
Available online 23 March 2026
To address the challenges of strong data heterogeneity, difficulties in dynamic risk assessment, and insufficient on-site decision support in the safety operation and maintenance of urban underground-pipeline...
Research on the Mechanism of Water Blending Regulating Flow in Gathering and Transportation Pipelines and Crude Oil Sticking to the Wall
Available online 22 March 2026
This study investigates multiphase flow and crude oil adhesion in near-wellbore pipelines during mechanical recovery, using a visual experimental setup to analyze water blending mechanisms. A composite...
Mechanism study on viscosity reduction of heavy oil via synergistic microwave with magnetic particles and viscosity reducer
Available online 20 March 2026
The viscosity reduction method by employing magnetic nanoparticles and viscosity reducers with microwave was employed to reduce the viscosity of heavy oil. The synergistic effects of three magnetic...
Non-additive effects of CO and H2O impurities on H2 dissociation and subsurface diffusion on Fe(110): A first-principles study
Available online 18 March 2026
Impurities such as CO and H2O are inevitably present in hydrogen transport pipelines and can strongly influence hydrogen uptake and embrittlement of structural steels. However, the fundamental mechanisms...
Unravelling corrosion mechanisms of X80 pipeline steel in ammonia environment with chloride and oxygen
Available online 17 March 2026
Ammonia (NH3) is a promising hydrogen carrier, yet the corrosion mechanisms of pipeline steels in impurity-contaminated NH3 environments remain unclear. This study elucidates the effects of chloride...
Existing natural gas networks for 100% hydrogen transport: a case study in Europe
Available online 12 March 2026
Hydrogen transportation via dedicated pipelines or repurposed existing natural gas (NG) grids is one of the most reliable and cost-efficient means of delivering hydrogen over long distances. However,...
Experimental and numerical investigation into the influence of galling on liner wrinkling behaviour in mechanically lined pipes
Available online 10 March 2026
•FSBT and FEM validated the mechanical response of MLPs with natural galling.•Galling triggered wrinkling, reducing onset strain by 32% without global loss.•Galling height and circumferential position...
A Probabilistic Framework for Predicting Offshore Pipeline Failure under Corrosion: Integrating Semi-Empirical Models and Material Uncertainties
Available online 7 March 2026
This study presents a novel multi-scale probabilistic framework that couples microstructure-sensitive corrosion kinetics with Monte Carlo-based reliability analysis to predict failure behavior of offshore...
Pipeline-agent: A comprehensive decision support system for natural gas pipelines via verifiable computational reasoning
Available online 6 March 2026
Natural gas transmission networks require rapid operational decisions that integrate geographic information systems data, network topology, and time indexed measurements from operational systems. While...
PipeFormer: A physics-informed tokenized sparse transformer for natural gas pipeline networks
Available online 6 March 2026
Real time simulation is vital for the safety and optimal scheduling of natural gas pipeline networks. However, traditional numerical solvers are often too slow for rapid decision making, while previous...
Study on phase characteristics and impurity content of dense phase / supercritical CO2 system under pipeline transportation conditions
Available online 6 March 2026
•This paper optimizes the equation of state suitable for CO2 system containing impurities by experiments.•This paper reveals the influence mechanism of different impurities on the phase characteristics...
Sand transport characteristics and critical sand-carrying velocity of gas-water mixtures in wellbores during hydrate production
Available online 4 March 2026
•Sand transport mechanisms identified under multiphase flow.•Inclination angle strongly affects critical transport velocity.•Gas-liquid ratio alters sand suspension regimes....
An optimal control method for valve regulation based on Pontryagin’s principle in energy interconnection systems
Available online 3 March 2026
Traditional optimization-based scheduling for interconnected energiy systems is performed offline and produces static pre-schedules that may become suboptimal or even infeasible when real-time operating...
A Multi-Sensor Fusion and Feature Recognition Based Integrated Localization method for In-Pipe Inspection Robot
Available online 2 March 2026
Accurate positioning of In-Pipe Inspection robot is critical for the detection and localization of defects in subsea pipelines. This paper presents an integrated in-pipe navigation method that fuses...
Influence on Dynamic Fault Displacement on the Behavior of Buried HDPE Pipeline Crossing Faults
Available online 2 March 2026
Surface deformation from fault displacement threatens buried pipelines crossing fault zones. Previous studies often idealized fault displacement as a quasi-static load, neglecting dynamic rupture effects....
A Magnetic Flux Leakage Inspection Defect Identification Method for Hydrogen-Blended Pipelines Based on a Hybrid 1D-CNN-LSTM Neural Network
Available online 2 March 2026
Hydrogen-induced degradation phenomena, including hydrogen embrittlement and hydrogen-induced cracking, pose a significant threat to the structural integrity of carbon steel pipelines in high-pressure...
FPE‑YOLO: Real‑Time Small‑Object Detection for Third‑Party Intrusion in Oil and Gas Pipeline Integrity Monitoring
Available online 26 February 2026
•A bio-inspired FPE-YOLO framework for small object detection in pipeline intrusion monitoring.•Progressive three-stage enhancement: attention → cross-scale fusion → feature enhancement.•FoveaAttention...
Synergistic Inhibition Effect of CO2 Hydrate Formation by L-Alanine and Sodium Chloride: Experimental Investigation and Mechanistic Insights
Available online 24 February 2026
•The inhibitory performance of alanine as a hydrate inhibitor was investigated. At a concentration of 0.6 wt%, alanine achieved the longest induction time and the lowest total gas consumption; specifically,...
Resolving Infeasibility and Optimizing Costs for Oil Resource Allocation: An Adaptive Parameter Modification Framework
Available online 22 February 2026
Against the backdrop of the global energy transition, the oil supply chain places higher demands on efficient resource allocation. Traditional optimization models often struggle in actual operational...
Peridynamic Analysis of Fracture Failure in Girth Welds of X80 Pipeline
Available online 15 February 2026
With the large-scale application of X80 high-grade, large-diameter, and high-pressure natural gas pipelines in China, girth weld regions are prone to fracture failure due to the deterioration of material...
