Gas leaks from pipelines may cause human casualties and economic losses. Consequently, detecting gas diffusion in the environment and determining its concentration around pipelines can be essential. In the present research, leakage of natural gas due…
For the transportation pipeline with the diameter 1.219 m and the internal pressure 3-12 MPa, the leakage and diffusion of the natural gas of the pipeline in the soil was studied by numerical simulation. First, the finite model containing both…
Hydrogen blending has significant influences on the characteristics and evolution of safety accidents of natural gas. In this study, the numerical investigation is performed to reveal the leakage and diffusion characteristics of hydrogen-blended…
Natural gas transportation heavily relies on buried natural gas network. Unfortunately, natural gas pipeline leakage can cause environmental pollution and resource loss, and even leads to serious risks on human's life and properties due to its…
This is an innovative work that may prove to be a milestone in terms of saving money that gets wasted due to the generation of unwanted interface (I/F) mixture between different petroleum products (diesel, gasoline and kerosene oil) in direct…
Wax diffusion characteristics are of great importance to the wax deposition prediction in crude oil pipelines. The wax diffusion process of water in oil emulsion (w/o emulsion) is more complicated on account of the influence from dispersed water…
In this paper, the chemical exergy in waxy crude oil pipeline transportation process was mainly calculated and studied. On the one hand, the specific chemical reaction exergy of waxy crude oil in oilfield was derived according to the common…
Helium-3, a potential fusion fuel which is widely deposited in the lunar regolith, may act as a leading role in the future energy supply. Despite abundant investigations of the lunar regolith properties, the research of the transport behavior of…
The generalized Taylor's Formula is used to derive a fractional radial-cylindrical diffusivity model via a fractional conservation of mass in radial geometry in a petroleum reservoir. The result is a space-fractional generalization of the diffusivity…
Successful design and execution of CO2 sequestration in saline aquifers requires a comprehensive understanding of CO2 transport properties. CO2 diffusion coefficient affects CO2 dissolution behavior in water/brine and controls phenomena such as shape…
Hypothesis: Hydrogen geo-storage is considered as an option for large scale hydrogen storage in a full-scale hydrogen economy. Among different types of subsurface formations, coal seams look to be one of the best suitable options as coal's micro/nano…
The reduction of pour point of waxy crude oil by pyrolysis under high pressure N2 or supercritical methanol (SCMeOH) environment was experimentally studied at the temperatures ranging from 370 to 400 C. During the pyrolysis under N2 environment, only…
The present work is an experimental investigation that aims at studying the effects of different fuel additives on the soot volume fraction and temperature in a well-defined vertical laminar diffusion flame configuration, and these additives include…
Without remorse, fossil fuels have made a huge contribution to global development in all of its forms. However, the recent scientific outlooks are currently shifting as more research is targeted towards promoting a carbon-free economy in addition to…
A diffusion layer model was developed for condensation heat transfer of a vapor with noncondensable gases. The model predicts the heat transfer coefficient for free convection condensation over a vertical surface in the presence of air with…
Thallium (Tl) isotope ratios are an emerging tool that can be used to trace crustal recycling processes in arc lavas and ocean island basalts (OIBs). Thallium is a highly volatile metal that is enriched in volcanic fumaroles, but it is unknown…
A burner comprising multiple co- and cross-flow jets was developed to address the effect of blending the natural gas (NG) with the liquefied petroleum gas (LPG) on the NOx emissions from laminar/turbulent diffusion and triple flames in the normal and…
Emission reduction from Natural gas-fired reciprocating engines (NGFREs) is of high priority to regulatory agencies due to their significant contribution to overall pollutant emissions. NGFREs are well-known for their simplicity and are designed…
The gas in-place (GIP) content and the ratio of adsorbed/free gas are two key parameters for the assessment of shale gas resources and have thus received extensive attention. A variety of methods have been proposed to solve these issues, however none…
Carbon isotope composition (13C) has been used as a standard geochemical tool to explore the genetic and post-genetic information of natural gas systems. However, little attention has been paid to the influence of the diffusion loss on the real 13C…
Methane transportation in tight sedimentary rocks results in significant and complex isotope fractionation. Existing models and mechanistic studies of isotope fractionation cannot fully explain the actual observations in gas transport processes that…
One of the most important characteristics of asphaltene molecules is their interfacial properties. These are amphiphilic molecules with polar and nonpolar portions. Consequently, asphaltenes have an active surface, so they can be adsorbed at the…
In situ fractionation in shales means differential movement of the light versus heavy components of the crude oil in the shale formation. This can be due to multiple phenomenon like molecular sieving, varying diffusion coefficients for different…
Wax diffusion characteristics are of great importance to the wax deposition prediction in crude oil pipelines. The wax diffusion process of water in oil emulsion (w/o emulsion) is more complicated on account of the influence from dispersed water…
To study the migration and variation rule of petroleum pollutants in soil and evaluate the soil condition, the field investigation is carried out in a refinery in Yunnan Province and the relevant data are collected. Then, soil sampling and leaching…
Wax diffusion characteristics are of great importance to the wax deposition prediction in crude oil pipelines. The wax diffusion process of water in oil emulsion (w/o emulsion) is more complicated on account of the influence from dispersed water…
The methane into the soil from buried natural gas pipelines due to small leakages, changes the soil properties, posing potential risks to humans and the environment. It is essential to estimate the leakage rate and monitor the methane diffusion range…
The leakage and diffusion characteristics of natural gas were investigated in the condition of the leakage of liquefied natural gas (LNG) in the storage tank. Fluent was adopted to simulate the process in a series of three-dimension unsteady state…
Noble gases are ideal natural tracers to characterize the storage, migration and origin of fluids in geological environments. They are chemically and biologically inert and therefore are only partially separated by physical processes including the…
Nanobubbles have attracted wide scientific attention due to their large number of potential applications in nanotechnology, and they are ubiquitous during natural gas hydrates (NGHs) mining which is one of the strategic energy resources. Molecular…
Hydrogen blending has significant influences on the characteristics and evolution of safety accidents of natural gas. In this study, the numerical investigation is performed to reveal the leakage and diffusion characteristics of hydrogen-blended…
Natural gas transportation heavily relies on buried natural gas network. Unfortunately, natural gas pipeline leakage can cause environmental pollution and resource loss, and even leads to serious risks on human's life and properties due to its…
Methane transportation in tight sedimentary rocks results in significant and complex isotope fractionation. Existing models and mechanistic studies of isotope fractionation cannot fully explain the actual observations in gas transport processes that…
To meet the requirements for use as an automotive fuel, motor gasoline must be highly flammable and combustible. In addition, because gasoline is highly volatile, in the event of its leakage from a storage tank, a large amount of vapor is rapidly…
To prevent the formation of frozen hydrate blocks with the alternative injection of supercritical carbon dioxide and water after shut-in, the upper and lower interfaces of the frozen block sections in the injection well bore are calculated based on…
The methane into the soil from buried natural gas pipelines due to small leakages, changes the soil properties, posing potential risks to humans and the environment. It is essential to estimate the leakage rate and monitor the methane diffusion range…