One of the most important tools for studying fluid flow behavior in oil and gas reservoirs is reservoir simulation. It is constructed based on a comprehensive geological information. A comprehensive numerical reservoir model has tens of millions of…
The greenhouse effect has brought about a series of ecological and environmental problems such as wind intensification, species extinction, acid rain, awful weather, sea-level rise, which are mainly caused by CO2 among all greenhouse gases. It is an…
A numerical method is developed to investigate leakage in above-ground and buried urban distribution natural gas pipelines. The main aim is to develop a few equations to estimate leakage form above-ground and buried urban natural gas pipelines. The…
The main purpose of this study is to develop accurate equation for predicting methane emission into the environment during natural gas (NG) purging process. The process is carried out regularly in NG pressure reducing stations. For this purpose, a…
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…
World widely, most natural gas pipelines are directly buried underground. Unfortunately, leakages often occur to the natural gas pipelines because of corrosion, external interference, construction defects, etc. As a result of the gas diffusion and…
Multiphase flows are of paramount importance in the oil and gas industry, considering that most petroleum industries produce and transport oil and gas simultaneously. However, systematic research on pipeline leakage conveying more than one phase at a…
Multiphase flows are of paramount importance in the oil and gas industry, considering that most petroleum industries produce and transport oil and gas simultaneously. However, systematic research on pipeline leakage conveying more than one phase at a…
A new model to detect leaks optimally in liquid pipelines is presented. The model uses the concept based on the Liapunov stability criteria to evolve a criterion for pipeline leak detection. A flow model was derived for a typical pipeline flow…
A first-order differential leak detection model that accurately detects leaks in a crude oil pipeline is presented. This model incorporates a leak factor KL in the axial direction, which is simulated by applying the finite element method of numerical…
With global warming and 2050 carbon reduction targets, the demand for Liquefied Natural Gas (LNG) marine transportation continues to increase. LNG carriers that experience emergency unseaworthy accidents at sea have the need for emergency transfer…
In this paper, Euler models suitable for hydrate slurry flow were established based on the particle dynamics theory. The results showed that the distribution of the velocity, particle concentration and turbulent kinetic energy in the curved pipe was…
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…
Multiphase flows are of paramount importance in the oil and gas industry, considering that most petroleum industries produce and transport oil and gas simultaneously. However, systematic research on pipeline leakage conveying more than one phase at a…
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…
The plunger pump which once pumped water was tried to transport crude oil. Because of the big crude oil's dynamic viscosity, the plunger pump's self-absorption characteristic decreased, and the plunger pump's flow rate and efficiency reduced, the…
With global warming and 2050 carbon reduction targets, the demand for Liquefied Natural Gas (LNG) marine transportation continues to increase. LNG carriers that experience emergency unseaworthy accidents at sea have the need for emergency transfer…
In this paper, Euler models suitable for hydrate slurry flow were established based on the particle dynamics theory. The results showed that the distribution of the velocity, particle concentration and turbulent kinetic energy in the curved pipe was…
Multiphase flows are of paramount importance in the oil and gas industry, considering that most petroleum industries produce and transport oil and gas simultaneously. However, systematic research on pipeline leakage conveying more than one phase at a…
In recent years, due to the reduction of the amount of raw material gas and the change of equipment parameters, the liquefied natural gas recovery rate is reduced. According to the existing problems, the system needs to be optimized to improve the…
The waxy component in natural gas may bring about some challenges in the treatment and transportation processes, especially in the cryogenic separation process. An axial flow cyclone separator was applied to separate wax from natural gas. An…
By means of additional specific heat capacity and momentum source terms methods, the physical and mathematical models of the heat transfer process of waxy crude oil during its static cooling in the vault tank are established. Through the numerical…
Since the success of recovering natural gas from hydrate-bearing reservoirs (HBRs) in Shenhu Area of the northern South China Sea in 2017, China has successfully produced natural gas from hydrates in permafrost and ocean environments. It certainly…
Based on the established physical and mathematical models for the thermal system coupled by crude oil, pipeline and soil, the thermal characteristics of crude oil pipeline during its consecutive process from shutdown to restart are investigated. Some…
An additional specific heat capacity method and a momentum source method are used to establish a mathematical model to numerically simulate the three-dimensional heat transfer characteristics and flow characteristics of the horizontal…
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…
At present, the stable production capacity evaluation of gas reservoirs is mostly numerical simulation, and the heterogeneity and water production of gas reservoirs are considered comprehensively. Taking QXZ gas reservoir producing well in Block SYS…
In the energy interaction mechanism of integrated energy parks, in order to minimize the total operating cost of each integrated energy park and improve the internal power sharing level of multi integrated energy parks at the same time, based on the…
Energy storage resources have been recognized as one of the most effective ways to cope with the large-scale integration of renewables. However, their high cost still hinders its wide application. To address this issue, the concept of Cloud Energy…
Due to many factors such as the construction environment, the existing tunnels still use drilling and blasting methods. The stress wave generated during the tunnel blasting process will cause some disturbance to the surrounding buildings, and…
The mooring systems give stability to the floating platforms against environmental conditions, stabilizing the platform with mooring lines attached to the seabed. The mooring systems are among the main components that guarantee the safety of the…
The metal magnetic memory detection method (MMM) was used to study the magnetic signal characteristics of the high-speed train wheelset material 25CrMo4 plate sample under static force, and numerical simulation of magnetic memory signal by the…
The application of pulse eddy current detection (PECT) to quantitative detection of oil and gas pipeline cracks is a hot research field in the field of nondestructive testing. Firstly, the paper analyzes the crack detection technology by pulse eddy…
Jumper tubes are widely used in the field of ocean engineering as a key component of oil and gas transportations. In order to improve the mixing conditions in the offshore pipelines, a blind tee is usually installed upstream of the measuring…
Pipeline is a common transportation mode in oil and gas industry. Erosion wear is one of the important factors leading to pipeline failure. In order to better analyze the erosion of the inner wall of t-tee pipe, the erosion of gas-solid two-phase…
Simulation of the transport of ions and neutral particles is important for studies of the flow field and working characteristics of jet flow plasma devices. The spatiotemporal evolution of plasma plumes in the small space within such devices is…
Due to many factors such as the construction environment, the existing tunnels still use drilling and blasting methods. The stress wave generated during the tunnel blasting process will cause some disturbance to the surrounding buildings, and…
The application of pulse eddy current detection (PECT) to quantitative detection of oil and gas pipeline cracks is a hot research field in the field of nondestructive testing. Firstly, the paper analyzes the crack detection technology by pulse eddy…
Multiphase flow and complex flow regimes of asphalt-base crude oil with solid-state asphalt and gas presenting in submarine pipelines bring difficulty to the design and operation. For multiphase flow in risers, flow regimes are often very complex. So…
Unlike ordinary refined products, high waxy crude oil has a potential serious safety problem during transportation because of its non-Newtonian characteristic. Further, the operating parameters of the pipeline and physical properties of the crudes…
Natural gas hydrates are one of very important future clean energy resources with extensive distribution in the world. The field production tests are very difficult with high investment, while numerical simulation is an effective and economical…
The current paper illustrates the numerical study of the global combustion parameters. It mainly focused on the computational analysis that investigated the non-premixed combustion in the cylindrical burner. Therefore, we selected many fuels to…
The analysis of the coupling mechanism of thermal-hydraulic-mechanical (THM) fields, and solid-liquid-gas (SLG) phases during gas extraction process is of profound significance to explore its numerical application in the gas occurrence regularity and…
Many hydrate-bearing sediments are featured with unconsolidated argillaceous siltstones, which exist the non-Newtonian flow and threshold pressure gradient due to the high content of clay. In this study, the threshold pressure gradient of hydrate…
With global warming and 2050 carbon reduction targets, the demand for Liquefied Natural Gas (LNG) marine transportation continues to increase. LNG carriers that experience emergency unseaworthy accidents at sea have the need for emergency transfer…
Thermal NOx formation is very high in the rotary cement kiln due to high-temperature flame. Essentially all NOx emissions associated to the cement manufacturing are formed in cement kilns. In this paper, the effects of natural gas injection into…
In this paper, Euler models suitable for hydrate slurry flow were established based on the particle dynamics theory. The results showed that the distribution of the velocity, particle concentration and turbulent kinetic energy in the curved pipe was…
Natural gas (NG) can replace part of pulverized coal (PC) in the blast furnace (BF) injection as the clean and high-calorific hydrogen-rich energy, which can reduce environmental pollution and energy consumption in molten iron production. In this…
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…
Energy measurement is the most important measurement method in international natural gas trade, and the calorific value of gas is one of the core parameters of energy measurement. In practice, the calorific value of natural gas is usually calculated…