Research on adaptability of simulation state equation of hydrogen-blended natural gas pipeline
Available online 26 August 2025
At present, hydrogen transportation in natural gas pipeline network is the main mode of hydrogen energy transportation. Accurate description of the physical parameters of mixed gas is the key to the...
Dynamic response of buried pipeline under the sliding instability of slopes in cold regions
Available online 26 August 2025
•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,...
Research Status and Technical Analysis of CO2 Conversion of In-service Oil and Gas Pipelines
Available online 25 August 2025
As a key link in CCUS technology, pipeline transportation is of great significance for realizing China 's " double carbon " goal. In view of the high cost of separate construction of carbon dioxide...
Dynamic risk assessment of corrosion in CO₂ transport pipelines under multi-factor coupling and failure probability modeling
Available online 25 August 2025
Internal corrosion poses a major threat to the integrity of CO₂ transport pipelines, which are essential to CCUS technology. However, accurate risk assessment faces significant challenges. This study...
Energy transition scheme for Petroleum Resource-Based Cities considering multi-energy integration
Available online 25 August 2025
•Present a blueprint and framework for city energy transition•Optimize energy supply through a novel multi-energy integration approach•Develop a universal model to minimize total costs and carbon emissions•Analyze...
Effect of gas impurities on the dissociative adsorption of hydrogen on Fe(100) surface of pipeline steel
Available online 21 August 2025
As common impurities in natural gas and hydrogen compatibility experiments, oxygen (O2) and water (H2O) have a significant impact on hydrogen compatibility of pipeline materials. The competition among...
Numerical investigation of buckling resistance in buried wave-shaped steel pipes for fault crossing
Available online 16 August 2025
Buried pipelines, as critical infrastructure for oil and gas transportation, are at significant risk of buckling failure induced by fault displacement in seismically active regions. This study investigates...
Investigation of water displacement process in pipelines: An improved mechanistic model and its numerical implementation
Available online 15 August 2025
Multiphase flows are very common in industrial operations. In offshore oil and gas production, transient processes in long pipelines can lead to water accumulation, which must be removed using gas-oil...
Burst failure mechanisms of hydrogen-blended pipeline elbows with elliptical corrosion defects using automated finite element analysis
Available online 28 July 2025
Hydrogen-blended natural gas transportation represents a cost-effective and efficient hydrogen delivery solution with significant practical implications and application prospects. Currently, research...
Economic Viability of Liquefied Natural Gas Pipeline Construction: Influence of Cascaded Utilization of Cold Energy and Distance - Volume Factors
Available online 27 July 2025
•Theoretical feasibility of LNG pipeline transportation is investigated•The economic boundaries of LNG pipeline transportation are explored•The application potential of LNG pipeline transportation in...
A reliability assessment method of high grade steel large diameter natural gas transmission pipelines considering defects correlation
Available online 23 July 2025
High grade steel large diameter natural gas pipelines play a pivotal role in natural gas long-distance transportation, yet their safety assessment confronts significant challenges from the coupling...
Flow characteristics and leakage rate calculations of microchannels in hydrogen-blended natural gas sealing structures
Available online 14 July 2025
•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...
Hydrogen trapping characteristics of X52 pipeline base metal and weld and their influence on the embrittlement susceptibility under different hydrogen charging conditions
Available online 13 July 2025
•Reversible/irreversible hydrogen trap ratio in HAZ exceeds BM, increasing HAZ vulnerability to hydrogen-induced crack initiation and propagation.•Gaseous hydrogen charging (6.3 MPa) induces low HE...
A transient model considering non-equilibrium phase transition in CO2 pipe decompression
Available online 9 July 2025
The trend of global warming is becoming increasingly severe, making it imperative to reduce CO2 emissions. Carbon Capture, Utilization, and Storage (CCUS) is a crucial means to achieve this goal. CO2...
Two-stage optimization method for the simultaneous calibration of pipe roughness coefficients and nodal demands for water distribution networks
Available online 5 July 2025
This paper presents a two-stage optimization framework for the simultaneous calibration of pipe roughness coefficients and nodal demands in water distribution networks (WDNs). Traditional calibration...
A lightweight pipeline weld radiographs defect detection detector based on Inverted Bottleneck
Available online 4 July 2025
Pipeline weld defect detection is essential for the safety of oil and gas transportation, but visual radiograph inspection is time-consuming and labor-intensive. Intelligent detection often requires...
Natural gas demand prediction: comprehensive overview of the current situation and future development direction
Available online 2 July 2025
Natural gas demand (NGD) forecasting can accurately estimate the gas demand, and help to plan the gas source configuration, pipeline network transportation and gas storage arrangements in advance, so...
Quantification of methane emissions from typical natural gas stations using on-site measurement technology
June 2025
•Fugitive methane emission measurements at typical stations of the natural gas pipeline network using a hydrogen flame ionization detector and a high-flow methane tester.•There is a statistically significant...
Experimental study on the leakage identification for the buried gas pipeline via vibration signals
June 2025
It is difficult to detect and locate small leakages, especially for buried pipelines. Therefore, a non-intrusive leakage identification method for buried gas pipelines is proposed in this study. Accelerometers...
Reliability analysis of slow crack growth in HDPE pipes: Impact of buried pipeline design and soil characteristics
June 2025
This study delves into one of the most common fracture mechanisms in polyethylene pipes and the primary cause of their long-term failure, the slow crack growth (SCG) phenomenon. This failure mode in...
Enhanced speed control of pipeline pigs with adjustable bypass using quantitative feedback theory and cascade PID algorithm
June 2025
During pipeline pigging operations, precise control of the pig’s running speed is crucial. However, external speed disturbances often occur during these operations. In response to this challenge, adjustments...
A multi-level classification model for corrosion defects in oil and gas pipelines using meta-learner ensemble (MLE) techniques
June 2025
•The manuscript has potential highlights as addressed below.•A stacking ensemble method was developed to improve the prediction corrosion defect level using multiple classifiers and a logistic regression...
A burst capacity model for pipelines containing pinhole-in-corrosion defects
June 2025
This study develops a practical burst capacity model for oil and gas pipelines containing pinhole-in-corrosion (PIC) defects based on results of extensive parametric three-dimensional finite element...
A new model for predicting characteristics of the near-field leakage in high-pressure CO2 pipelines
June 2025
The safe transportation of carbon dioxide (CO2) is crucial to the successful implementation of Carbon Capture, Utilization, and Storage (CCUS) projects. Accidental leaks in pipelines can pose significant...
