Recent Articles

Open access

ISSN: 2667-1433

Comparative Study on the Effects of Sudden Expansion and Sudden Contraction Structures on the Deflagration Characteristics of Hydrogen-Methane-Air

This study investigates the effect of sudden contraction and expansion structures on the detonation flame propagation of hydrogen-methane-air mixtures through experiments and LES. The study introduces...

Share article

Self-Tuning Clamping Force Control with Optimal Trajectory Tracking for Autonomous Pipe Inspection Robots

To address the inability of existing external pipe-climbing robots to adaptively regulate clamping force during operation, a novel robot was developed. To enable automatic clamping in response to varying...

Share article

Microscopic Mechanism of Wax Precipitation and Gelation of Waxy Crude Oil Based on Molecular Dynamics Simulation

•Molecular dynamics model links cooling-driven van der Waals dominance to gelation phase transition.•Wax-wax attraction drives gelation, aligning with macro-rheological trends..•RDF peaks rise, Rg drops,...

Share article

Experimental Data-Driven Streamlined Approach for Tampering Detection in Oil and Gas Pipelines

Pipelines are essential links of the energy sector for transporting and distributing energy products across countries and from refineries to terminals. With the increasing value of energy products,...

Share article

USA pipeline girth weld failures: an alternative metallurgical analysis of the literature

Following reports of pipeline girth weld failures in the USA, Australian Pipeline & Gas Association (APGA) convened a workshop to discuss the technical requirements and structural integrity of their...

Share article

A Critical and Bibliometric Review of Life Cycle Cost Analysis Integration into Decision Support Systems for Pipeline Asset Integrity Management

•Maintaining pipeline integrity is essential for safety, environmental protection, and energy security.•Traditional pipeline management is reactive, leading to high costs, safety risks, and inefficiencies.•Life...

Share article

Failure analysis due to collapse pressure in CT-90 coiled tubing in the Mexican oil industry

Failure analysis of the ruptured CT-90 grade steel coiled tubing (CT) with a diameter of 44.45mm (1.750"), which became trapped at the bottom of the well, was conducted. Mechanical and microstructural...

Share article

A Two-Fluid Model Incorporating Droplet Entrainment to Predict Pressure Drop and Holdup for CO2 Two-Phase Flow in Horizontal and Vertical Pipe

CCUS technology is currently the best practice for reducing CO2 emissions, with pipeline transportation as the primary method for the long-distance, large-scale transport of captured CO2 to storage...

Share article

A novel variable weighted yield criterion and its applications in burst pressure prediction of corroded pipelines

The strength theory is a study of the materials' yielding and failure under complex stress. The burst pressure of pipelines with corrosion cannot be predicted accurately under complex loadings. One...

Share article

Burst pressure models and validations for thick-walled pipelines containing corrosion defects

Corrosion is one major threat to pipeline integrity. Over the past decades, many corrosion models have been developed for determining the remaining strength of corroded pipelines, including ASME B31.G,...

Share article

Seismic Fragility in Life Cycle Cost Analysis for Gas Pipelines: Design and Cost Optimization Framework

This study proposes an innovative approach to optimizing the seismic design of pipeline network by incorporating life-cycle cost analysis (LCCA). The research integrates seismic design, which includes...

Share article

Standards and codes for hydrogen in pipeline infrastructure: testing, qualification, and integrity assessment

•Framework with Gaps: Current standards provide foundational guidance for qualifying materials and infrastructure in hydrogen service but are insufficient for addressing the unique challenges of hydrogen...

Share article

Failure mechanism of sealing rubber exposed to supercritical CO₂ during rapid depressurization based on equivalent thermo-mechanical coupling damage model

•An Equivalent thermo-mechanical coupling damage model is developed•The SC-CO2 diffusion, deformation and damage of rubber O-ring are studied•SC-CO₂ is more likely to cause damage to O-rings compared...

Share article

Effect of Cr content on softening mechanism of the heat-affected zone of X80 GMAW automatic girth weld

Softening of the heat-affected zone (HAZ) could lead to strain concentration in the girth weld joint, which endangers the service safety of high strength pipelines, while the chemical composition and...

Share article

Composite Repair of Large Size Diameter Pipe with Severe Metal Loss Defects

A full-scale testing program was conducted to evaluate the use of carbon-epoxy composite repair technology to reinforce severe corrosion defects in large-diameter pipes. The technical elements associated...

Share article

Combined Ductile-Brittle Fracture Simulation of API X80 Under Impact Loading

This study explores finite element (FE) simulation of the combined ductile-brittle fracture behavior of API X80 steel under impact loading, incorporating the influences of strain rate and adiabatic...

Share article

Thermal and Residual Stress Distributions in Butt Fusion Joints of HDPE Pipes: FE Simulation and Experimental Validation

Butt fusion welding is widely applied for connecting high density polyethylene (HDPE) pipes but may generate residual stresses in the welded joints, interfering the bearing capacity and the service...

Share article

Carbon dioxide pipeline leakage risk assessment based on pipeline failure probability correction and CO2 concentration dispersion distance prediction

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...

Share article

Blending Hydrogen in Urban Gas Pipeline System: Investigation of the Hydrogen Compatibility of PE Pipeline Material

•In-situ tensile, creep, relaxation tests of PE100 in H2 environment were conducted.•MD simulations were conducted to study the mechanism of hydrogen effect.•H2 has no obvious effect on the mechanical...

Share article

Influence of Fe3C on corrosion inhibition efficiency of benzyldimethylhexadecylammonium chloride: Galvanic Corrosion interaction and adsorption behaviour

Corrosion products formation on carbon steel in oil and gas environments can induce corrosion galvanic corrosion and hinders corrosion inhibitor (CI) adsorption due to surface heterogeneities (i.e....

Share article

Development and Simulation Analysis of a Novel Flexible Deformation Inspection Units (FDIU) for Oil and Gas Pipelines

Oil and gas pipelines are essential for energy transportation, and their integrity is critical for safety and efficiency. Deformations such as dents can lead to failures, necessitating regular condition...

Share article

Mechanical response of the pressure pipeline rehabilitated by polymer liner under the action of surface load

The mechanical behavior of pressure pipelines rehabilitated with polymer liners under surface loads remains poorly understood. In this study, a three-dimensional model of a pressure pipeline repaired...

Share article

Study on fracture behavior analysis of X70 steel girth weld with toughness scatter

This study conducting a comparative analysis of the microstructure and mechanical properties of X70 pipeline steel various girth welds. The toughness scatter about Flux-Core Arc Welding (FCAW) of X70...

Share article

Investigation of cavitation damage patterns in centrifugal pump blades under rotating flow fields

To investigate the damage caused by the collapse of cavitation bubbles on the centrifugal pumps impeller wall and to explore the relationship between these bubbles and cavitation pits in a rotating...

Share article

Study on the phenomena and mechanism of reformation during hydrate dissociation of N-vinyl caprolactam system in pipeline

Natural gas hydrate blockage is a major threat to the flow safety of long-distance transmission pipelines in deep water. Although the addition of hydrate inhibitors can effectively mitigate hydrate...

Share article

Stay Informed

Register your interest and receive email alerts tailored to your needs. Sign up below.