Parametric study of burst strength for hydrogen blended natural gas pipelines with long corrosion defects
July 2026
Transporting hydrogen through existing natural gas pipeline poses significant challenges due to hydrogen embrittlement (HE), which can compromise the structural integrity of pipelines. This study evaluates...
Effect of oxygen and nitrogen on hydrogen adsorption and permeation processes
July 2026
•Dissolved gas variations negligibly affect Deff during hydrogen charging.•High H surface coverage and slow Tafel reaction rate occurred in N2 condition.•N and O atoms shown lower adsorption energies...
Understanding detection success of belowground natural gas leaks in urban environments through controlled release experiments
July 2026
•Urban environment significantly reduces natural gas pipeline leak detection success.•Higher leak rates improve the probability of detection by up to 37 pp (percentage points) compared to lower leak...
Characterization and potential distribution mapping of cathodically protected buried pipelines based on homogeneous and heterogenous factors
July 2026
The use of a close interval potential survey (CIPS) for cathodically protected buried pipelines can provide useful information about the active or passive state of the pipeline/coating interface and...
Synergistic evaluation of regular and radial-fin-integrated pipe performance using limit analysis and evolutionary symbolic modeling
July 2026
Subsea buried pipes in offshore field conditions are most vulnerable to upheaval buckling, a risk that is especially pronounced in soft clay soils where uplift resistance, expressed by the dimensionless...
Transformation mechanism of martensite-austenite (M-A) constituent in the heat-affected zone of high strength pipeline steel and its correlation with toughness deterioration
July 2026
Martensite-austenite (M-A) constituent in the heat-affected zone (HAZ) usually plays a detrimental role in toughness, especially in the intercritically reheated coarse-grained (ICCG) HAZ. However, its...
Knowledge graph construction for pipeline standards: Enhancing efficiency in the oil and gas industry
July 2026
The intelligent development of oil and gas pipelines is crucial for overcoming the challenges of transitioning from informatization to intelligence, especially considering the vast number of standards...
Existing natural gas networks for 100% hydrogen transport: a case study in Europe
July 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,...
Carbon dioxide pipeline leakage risk assessment based on pipeline failure probability correction and CO2 concentration dispersion distance prediction
July 2026
Given that supercritical or dense-phase carbon dioxide pipelines operate under high-pressure conditions, there exists a significant risk of high-pressure carbon dioxide leakage due to factors such as...
Unravelling corrosion mechanisms of X80 pipeline steel in ammonia environment with chloride and oxygen
July 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...
Experimental and numerical investigation of repaired pipeline by composite sleeve using DIC technique and FEM
July 2026
This research investigates the impact of a composite laminate sleeve on a corroded pipeline during a hydrostatic test, adhering to the ISO-24817 & ASME PCC-2 standards, employing the Digital Image Correlation...
A review of the challenges, solutions and economics of hydrogen transmission in steel pipelines
July 2026
Developing transmission pipelines is considered essential to realising renewable hydrogen’s decarbonisation potential in industry, transport, and energy storage. Numerous studies identify pipelines...
Flow characteristics and leakage rate calculations of microchannels in hydrogen-blended natural gas sealing structures
July 2026
•Described the mass transfer process of hydrogen-natural gas multi-component systems.•Developed a flow model for multi-component gases leaking through microchannels on sealing surfaces.•Analyzed the...
Dynamic risk assessment framework for offshore pipelines corrosion under insulation
July 2026
Corrosion under insulation (CUI) remains a critical threat to the integrity and reliability of offshore and marine pipeline systems due to its hidden nature, complex degradation mechanisms, and limited...
Dynamic response of buried pipeline under the sliding instability of slopes in cold regions
July 2026
•Based on SPH-FEM coupling method, the nonlinear dynamic model of buried pipeline under slope instability slide in cold regions is established.•According to the soil with different moving properties,...
Sand transport characteristics and critical sand-carrying velocity of gas-water mixtures in wellbores during hydrate production
July 2026
•Sand transport mechanisms identified under multiphase flow.•Inclination angle strongly affects critical transport velocity.•Gas-liquid ratio alters sand suspension regimes....
An MILP model for the coupled design and operation optimization of large-scale gathering pipeline networks
July 2026
The optimization of gathering pipeline networks (GPNs) involves both design and operation, which are highly interdependent but often addressed separately, leading to suboptimal solutions and higher...
Supplementary Evaluation Method for Maximum Deflection of Pipeline Systems with Expansion Joints under Bending and Axial Tension
Available online 14 June 2026
•When bending occurs, the joint simultaneously experiences a relative tensile displacement.•Monotonic loading tests revealed that the tensile limit angle of all bellows expansion joints is smaller than...
NTIME-DEPENDENT RELIABILITY ANALYSIS OF PIPELINES INTEGRATING BURST PRESSURE MODELING, FATIGUE CRACK GROWTH, AND STOCHASTIC OPERATIONAL LOADING
Available online 13 June 2026
•Integrated reliability framework combining fatigue and burst modeling.•Ln-Sec model achieves similar accuracy to CorLas at lower cost.•Time-dependent failure probabilities under stochastic pressure...
3D finite element–based meta-models for evaluating the structural response of buried steel pipelines under Gaussian-shaped localized subsidence
Available online 13 June 2026
•Parametric study based on 3D FEM of buried pipelines under ground subsidence.•A meta-model for the curvature transmission rate to the pipeline (1080 simulations).•Meta-models for axial stress, shear...
Hydrogen absorption, diffusion, and equivalent fugacity of Ni steels exposed to thiosulfate solutions
Available online 9 June 2026
•Permeation measured by Devanathan–Stachurski; thiosulfate as H₂S proxy.•C₀ decreases monotonically with Ni; ∼10 × lower at 5 wt.% Ni.•Ni raises corrosion potential, incorporates in the superficial...
Effect of Heat Treatment on Failure Behavior and Hydrogen-induced Stress Corrosion Cracking Mechanisms of Cr-Ni-Mo Steel in H2S Environments
Available online 9 June 2026
•The SCC of Cr-Ni-Mo steel in H2S environments is dominated by anodic dissolution and hydrogen embrittlement, with N&T steel showing superior resistance to SCC compared to Q&T steel.•2.N&T treatment...
Influence of Fe3C on corrosion inhibition efficiency of Benzyldimethylhexadecylammonium chloride: Galvanic Corrosion interaction and adsorption behaviour
May 2026
Corrosion products formation on carbon steel in oil and gas environments can induce galvanic corrosion and hinders corrosion inhibitor (CI) adsorption due to surface heterogeneities (i.e., roughness,...
Failure mechanism of sealing rubber exposed to supercritical CO₂ during rapid depressurization based on equivalent thermo-mechanical coupling damage model
May 2026
•An Equivalent thermo-mechanical coupling damage model is developed.•The S-CO2 diffusion, deformation and damage of rubber O-ring are studied.•S-CO₂ is more likely to cause damage to O-rings compared...
A numerical study on flow and heat transfer characteristics of the LNG storage tank feed pipeline
May 2026
As a low-carbon fuel, liquefied natural gas (LNG) requires strict temperature control during transportation. Direct injection into pipelines at ambient temperature induces significant thermal stress,...
