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Journal articles on the topic 'Pressure pipelines'

Author: Grafiati

Published: 30 May 2022

Last updated: 19 July 2025

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1

Zhang, Xiaotian, and Xingbing Xie. "Model for the Failure Prediction Mechanism of In-Service Pipelines Based on IoT Technology." Processes 12, no. 8 (2024): 1642. http://dx.doi.org/10.3390/pr12081642.

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With the rapid increase in pipeline mileage in China, the accurate prediction of corrosion issues in in-service pipelines has become crucial for ensuring safe pipeline operation. Traditional pipeline leakage monitoring methods are significantly limited by human factors and equipment precision, making it challenging to predict and identify leakage points accurately. Therefore, aligned with the trend of intelligent pipeline development, this study aims to construct a failure pressure prediction mechanism model for corroded pipelines based on IoT technology. This model leverages intelligent sensi

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2

Peletiri, Suoton, Nejat Rahmanian, and Iqbal Mujtaba. "CO2 Pipeline Design: A Review." Energies 11, no. 9 (2018): 2184. http://dx.doi.org/10.3390/en11092184.

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There is a need to accurately design pipelines to meet the expected increase in the construction of carbon dioxide (CO2) pipelines after the signing of the Paris Climate Agreement. CO2 pipelines are usually designed with the assumption of a pure CO2 fluid, even though it usually contains impurities, which affect the critical pressure, critical temperature, phase behaviour, and pressure and temperature changes in the pipeline. The design of CO2 pipelines and the calculation of process parameters and fluid properties is not quite accurate with the assumption of pure CO2 fluids. This paper review

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3

Radermacher, Ladislau, Cristian Rădeanu, and Ludovic Călcîi. "Analytical Examination of Deformational Dynamics in Above-Ground Pipelines Compromised by Corrosion Under the Influence of Internal Pressurization." Mining Revue 29, no. 4 (2023): 106–12. http://dx.doi.org/10.2478/minrv-2023-0035.

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Abstract Corrosion is a major factor responsible for failures and leaks in gas pipelines. In the context of external corrosion, the internal pressure within pipes can create stress and strain concentrations in the area affected by corrosion. These phenomena, combined with the presence of cavities or cracks resulting from the corrosion process, amplify the risk of pipeline failure. As corrosion reduces the wall thickness of the pipe, its ability to withstand internal pressures decreases significantly. Consequently, a pipe affected by corrosion may collapse at a much lower pressure compared to a

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4

Volodymyr, Cherniuk, Hnativ Roman, Kravchuk Oleksandr, Orel Vadym, Bihun Iryna, and Cherniuk Matvii. "The problem of hydraulic calculation of pressure distribution pipelines." Eastern-European Journal of Enterprise Technologies 6, no. 7 (114) (2021): 93–103. https://doi.org/10.15587/1729-4061.2021.246852.

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Most production technologies require a uniform flow path of liquid from pressure distribution pipelines. To achieve this goal, it is proposed to introduce polymer additives into the liquid flow or to use converging distribution pipelines with a continuous longitudinal slot in the wall. To reduce the uneven operation of the distribution pipeline during discrete liquid dispensing, it is proposed to use cylindrical output rotary nozzles with a lateral orthogonal entry of the jet into the nozzle. The problem is the lack of methods for accurate hydraulic calculation of the operation of distribution

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5

Zhang, Xiaolei, Xiaoyi Guo, Yading Chen, Chen Yang, Shuyu Liu, and Lixia Guo. "Research on the characteristics and protection of water hammer in long-distance dual-pipe water supply systems." PLOS ONE 19, no. 12 (2024): e0314998. https://doi.org/10.1371/journal.pone.0314998.

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Hydraulic transients in long-distance pressurized water pipelines significantly impact their normal operation. This study develops a one-dimensional mathematical model for pressurized water pipelines using the method of characteristics and incorporates water hammer equations for dual-pipeline systems. The model is validated with experimental data, and simulations are conducted under real engineering conditions, focusing on valve closure operations. The analysis examines the transient responses for varying valve closure times (T) and the effect of installing surge tanks. Results show that incre

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6

Cui, Ying, Jun Fang, Zhan Qu, Meimei Song, and Junhai Zhao. "Research on Damage Assessment of Buried Standard and Carbon-Fibre-Reinforced Polymer Petroleum Pipeline Subjected to Shallow Buried Blast Loading in Soil." Shock and Vibration 2021 (August 17, 2021): 1–19. http://dx.doi.org/10.1155/2021/1459260.

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Buried petroleum pipelines may encounter threats from blast loading due to terrorist attacks, accidental explosions, and artificial blasting during in-progress construction. Carbon-fibre-reinforced polymer (CFRP) is often used for the repair and reinforcement of buried petroleum pipelines. It is meaningful and necessary to distinguish the different responses and establish an effective damage assessment method for standard petroleum pipelines and CFRP-supported petroleum pipelines buried in soil under blast loading. In this study, under fixed end constraints, experimental analysis and numerical

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7

Yang, Xueming, Hui Yan, Deting Luo, Qing Liu, and Qiang Wang. "Multivariate polynomial regression based selection and analysis of process parameters for X-ray inspection of pipeline containing medium." Journal of Physics: Conference Series 2528, no. 1 (2023): 012044. http://dx.doi.org/10.1088/1742-6596/2528/1/012044.

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Abstract Pressure pipelines use pressure to transport gas, liquefied gas, and steam in the process of use. If there are defects in the pipeline, it is easy to leak or burst, and even cause secondary accidents. To ensure safety, it is necessary to inspect the pressure pipelines in use regularly. However, it is difficult for the pressure pipeline in use to empty the internal medium. Therefore, it is of great significance to inspect the defects of the industrial pressure pipeline under operating conditions. In this paper, X-ray testing experiments are carried out for weld defects of pipelines wit

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8

Feng, Chunjian, Hang Wu, and Xin Li. "Buckling Analysis of Corroded Pipelines under Combined Axial Force and External Pressure." Metals 12, no. 2 (2022): 308. http://dx.doi.org/10.3390/met12020308.

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Affected by a complex environment, corrosion is a common defect in steel pipelines. Moreover, steel pipelines are subjected to large axial forces during their installation and operation. Corroded deep-sea steel pipelines are prone to local buckling under complex loads. Therefore, in view of this problem, the collapse response of corroded steel pipelines under the combined axial force and external pressure is analyzed in detail. First, a formula for evaluating the collapse pressure of corroded steel pipelines under external pressure and axial force is proposed. Then, the factors affecting the c

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9

Sydor, Taras, and Vadym Orel. "Variation of Hydraulic Resistance in Pressure Pipelines of an Open-Type Hydraulic System." Energy engineering and control systems 10, no. 1 (2024): 13–18. http://dx.doi.org/10.23939/jeecs2024.01.013.

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Pressure distributive pipelines with path distribution of fluid are part of various technical systems. Pressure losses at abrupt and smooth pipe reductions are components of total pressure losses in these pipelines. After all, the equalization of fluid distribution along the length of distributive pipelines is achieved, in particular, by reducing their diameter in the direction of flow. Depending on the configuration of the pipe reductions, pressure losses at this pipeline element can vary. For an open-type hydraulic system, a regulatory characteristics of pressure in the pipeline has been obt

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10

Zhao, Hongyang, Xu Liang, Zhiguo Yang, Pei He, and Bowen Zhao. "Experimental and Numerical Analysis of the Impact of Corrosion on the Failure Pressure of API 5L X65 Pipeline." Journal of Marine Science and Engineering 12, no. 10 (2024): 1810. http://dx.doi.org/10.3390/jmse12101810.

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This paper employs the Finite Element Method (FEM) to simulate and analyze the effects of corrosion defect parameters on the stress and failure pressure of pipelines. It investigates how the boundary conditions of the pipeline model influence stress and examines the sensitivity of failure pressure to corrosion defect parameters. A nonlinear regression equation has been developed from a dataset obtained through simulation experiments to predict the failure pressure of corroded pipelines. To validate the effects of corrosion defect parameters on failure pressure, a hydrostatic test platform for

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11

Li, Meng, Hong Zhang, Meng Ying Xia, Kai Wu, Jing Tian Wu, and Xiao Ben Liu. "Effect of Steel Properties on Buckling Pressure of Corroded Pipelines." Materials Science Forum 898 (June 2017): 741–48. http://dx.doi.org/10.4028/www.scientific.net/msf.898.741.

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Due to the harsh environment for submarine pipelines, corrosion damage of the pipeline steels is inevitable. After the corrosion damage, pipelines are prone to failure and may cause serious consequences. The analysis of the effects of different steel properties on the collapse pressure of pipelines with corrosion defects is of importance for the option of appropriate pipeline and avoiding accidents. Based on the finite element method, the finite element model of the pipeline with defects under external pressure was built. Firstly, the accuracy of the numerical model was validated by comparing

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12

Su, Wenxian, and Jie Ren. "Numerical Simulation of Local Buckling of Submarine Pipelines under Combined Loading Conditions." Materials 15, no. 18 (2022): 6387. http://dx.doi.org/10.3390/ma15186387.

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Submarine pipelines are prone to developing flaws, such as ellipticity and depression during the manufacture, burying, and use processes. The local buckling characteristics of submarine pipelines with initial imperfection must be studied since the initial imperfection have an impact on local pipeline buckling. In this study, the local buckling of submarine pipelines with varying depression depths and ellipticity is simulated using the finite element program ABAQUS, and defect sensitivity of submarine pipelines with varying shape ellipticity, varying depression depths, and varying pipe radius-t

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13

Chen, Peng Chao, Hong Zhang, and Hong Ju Wang. "Studies on MAaximum Hydrostatic Testing Pressure for New Pipeline." Applied Mechanics and Materials 117-119 (October 2011): 162–66. http://dx.doi.org/10.4028/www.scientific.net/amm.117-119.162.

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Hydrostatic testing is an important step in pipeline construction. This test ensures the integrity of newly-constructed pipelines. Testing pressures used by Chinese construction contractors are lower than that in foreign countries. Nowadays, higher testing pressure is considered safer for pipeline operation. But what is testing pressure we should apply? Basing on fracture mechanics theory, this paper addresses the effects of testing pressure on pipeline materials, and calculates the maximum safe testing pressure. Also, experiments validate the theoretic conclusions.

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14

Liu, Peng, Shi Yuan Wu, and Le Kang. "Upheaval Buckling Analysis of Buried Offshore Pipelines under High Temperature and High Pressure." Advanced Materials Research 919-921 (April 2014): 292–95. http://dx.doi.org/10.4028/www.scientific.net/amr.919-921.292.

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Nonlinear finite element upheaval buckling model of buried offshore pipelines under HT/HP is built using ABAQUS. The petroleum is defined as uniform flow; temperature field of offshore pipelines produced in the process of petroleum transportation is obtained by heat transfer analysis; offshore pipelines are buried in trench of sandy seabed, interaction between seabed and offshore pipelines is defined as friction, seabed interaction with offshore pipelines will limit the movement of offshore pipelines; coupled fluid-structure analysis for three phase model of oil-pipe-soil is conducted to obtai

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15

Li, Yulin, and Zhihui Li. "Research on Material Selection Method and Brittle Fracture Mechanism of High-Pressure Pipeline." Shock and Vibration 2023 (December 5, 2023): 1–15. http://dx.doi.org/10.1155/2023/9541736.

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Aiming at the problem of the brittle fracture of pressure pipeline, the elastic constraint structure is described by using members and engineering building structures, and the concept of elastic constraint is proposed. Through the stress field analysis of the pressure pipeline under internal pressure, it is found that the pressure pipeline under internal pressure is an elastic constraint structure. The elastic constraint effect is applied to the pressure pipeline to explore the influence of elastic constraint effect on the brittle fracture of pressure pipeline. The critical wall thickness and

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16

Liang, Ping, Xingqiang Wen, Jinhai Liu, Yuan Li, and Zeshan Zhou. "Numerical Simulation of Mechanical Behavior of Gas Pipeline in High and Steep Slope." E3S Web of Conferences 406 (2023): 02019. http://dx.doi.org/10.1051/e3sconf/202340602019.

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Long-distance natural gas pipelines can often pass through the common slope safely. However, when pipelines inevitably pass through high and steep slopes(HSS) for some reasons, it is difficult for engineers to predict the stress state of pipelines. Therefore, in order to investigate the safety of natural gas pipelines in HSS areas, the finite element simulation calculation model of the pipeline in HSS was established. The predicted numerical model shows that the maximum Von Mises stress and axial strain of the pipeline in the HSS area appear at the lower elbow of the pipeline, which should be

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17

Pavlova, Z. Kh, Kh Kh Azmetov, Kh A. Azmetov, P. I. Vasilyev, and A. G. Gumerov. "DETERMINATION OF THE MAXIMUM ALLOWABLE PRESSURE FOR STRENGTH TESTING OF MAIN OIL-AND-GAS PIPELINE SECTIONS." Problems of Gathering Treatment and Transportation of Oil and Oil Products, no. 1 (February 28, 2025): 97–112. https://doi.org/10.17122/ntj-oil-2025-1-97-112.

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High-pressure testing of main oil-and-gas pipeline sections for strength is one of the methods for their technical condition assessment. At the same time, testing pipelines with pressure exceeding the working pressure is a very important and rather complex technological process that requires a reasonable definition and strict adherence to test parameters. In order to achieve the effectiveness of high-pressure testing, the test pressure must be sufficient to identify weak points in terms of pipeline strength ensuring during its operation. Besides, it is necessary to exclude the occurrence of ne

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18

Shaazizov, Farrukh. "Instrumental inspection of pressure pipelines of the Amuzang-2 pumping station." E3S Web of Conferences 401 (2023): 01028. http://dx.doi.org/10.1051/e3sconf/202340101028.

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This article discusses the main results of the field studies conducted to assess the technical condition of the pressure pipelines of the Amuzang-2 pumping station. The research aims to check the stress-strain state of the pipeline material, which occurs during long-term operation under conditions of corrosive and abrasive wear of the shell. The research objectives were as follows: measuring the thickness of the shell of pressure pipelines of the pumping station; verification calculation of the strength of pumping station pipelines. During the research, the method of carrying out full-scale me

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19

Zhu, Bin, Yong Su, and Zhi Gang Li. "Simulation of Cavitation Erosion in Different Throttling Pipelines." Advanced Materials Research 499 (April 2012): 288–92. http://dx.doi.org/10.4028/www.scientific.net/amr.499.288.

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There often exists cavitation erosion, large energy loss and big noise in throttling pipelines. In this study, the three-dimensional (3D) model of the secondary throttling pipeline was constructed according to the actual structure and parameters. Adopting the finite element method (FEM) for flow field calculation, the secondary and ordinary throttling pipelines have been calculated respectively under different working conditions, and the distribution maps of velocity and pressure fields in the pipelines have been constructed. The analyzed results demonstrate the applicability of the calculatin

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20

Malysheva, Anna. "Environmental justification of the distribution of pressure drop in a dead-end low-pressure gas network." E3S Web of Conferences 258 (2021): 08015. http://dx.doi.org/10.1051/e3sconf/202125808015.

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The gas supply system is determined by the classes of the elements of the gas transmission network associated with the pressure of the pumped natural gas. Laying gas pipelines in urban areas requires sufficient space around the pipes as a safety zone. The gas pipelines of the first level include gas communications in which the methane pressure is high or medium. To eliminate dead-end sections, gas pipelines are backed up (duplicating individual segments or ringing). The creation of a dead-end network is allowed only in small settlements. Dead-end network is a gas pipeline branching in various

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21

Cherniuk, Volodymyr, Roman Hnativ, Oleksandr Kravchuk, Vadym Orel, Iryna Bihun, and Matvii Cherniuk. "The problem of hydraulic calculation of pressure distribution pipelines." Eastern-European Journal of Enterprise Technologies 6, no. 7 (114) (2021): 93–103. http://dx.doi.org/10.15587/1729-4061.2021.246852.

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Most production technologies require a uniform flow path of liquid from pressure distribution pipelines. To achieve this goal, it is proposed to introduce polymer additives into the liquid flow or to use converging distribution pipelines with a continuous longitudinal slot in the wall. To reduce the uneven operation of the distribution pipeline during discrete liquid dispensing, it is proposed to use cylindrical output rotary nozzles with a lateral orthogonal entry of the jet into the nozzle. The problem is the lack of methods for accurate hydraulic calculation of the operation of distribution

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22

Zhou, Hongming, Peiyuan Li, and Longfei Wu. "Research on a model-based burst pressure prediction method for pipelines with corrosion defects." Journal of Mechanics 38 (2022): 315–22. http://dx.doi.org/10.1093/jom/ufac024.

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ABSTRACT The leakage of pipelines will cause serious harm to the human living environment. To meet the safety assessment requirement for pipelines, a pipeline burst pressure prediction method based on a parametric model is proposed. The parameters of the model include defect size, pipeline size and material properties. First, the relationship between the defect size and the burst pressure was studied by finite element analysis, and the parametric model was deduced according to the analysis results. Second, the undetermined coefficients of the model were obtained using the improved genetic algo

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23

Tam, C. K. W., and J. G. A. Croll. "Analysis of Buckle Initiation in Damaged Subsea Pipelines." Journal of Offshore Mechanics and Arctic Engineering 109, no. 4 (1987): 366–74. http://dx.doi.org/10.1115/1.3257033.

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A rigid, perfectly plastic mechanism analysis, embodying interactive uniaxial membrane and bending plasticity, is used to predict the form of localized impact damage for tubulars. An extension of the model allows the pressure response of a pipe containing damage, and in particular the pressure at which buckling is initiated in a damaged pipeline. Test results are shown to confirm the validity of the mechanistic approach employed in predicting the damage process, while initiation tests based on a different initial imperfection configuration are shown to reproduce the trend of predicted initiati

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Li, Yan, Wen Wang, Zhanfeng Chen, et al. "Burst Pressure Prediction of Subsea Supercritical CO2 Pipelines." Materials 15, no. 10 (2022): 3465. http://dx.doi.org/10.3390/ma15103465.

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To improve transportation efficiency, a supercritical CO2 pipeline is the best choice for large-scale and long-distance transportation inshore and offshore. However, corrosion of the pipe wall will occur as a result of the presence of free water and other impurities present during CO2 capture. Defects caused by corrosion can reduce pipe strength and result in pipe failure. In this paper, the burst pressure of subsea supercritical CO2 pipelines under high pressure is investigated. First, a mechanical model of corroded CO2 pipelines is established. Then, using the unified strength theory (UST),

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25

Pandey, Bharat Raj. "Water Hammer." Journal of Advanced College of Engineering and Management 8, no. 2 (2023): 127–35. http://dx.doi.org/10.3126/jacem.v8i2.55949.

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Dynamic Pressure rise or fall in all kinds of pipelines due to the operation of the valve which are transmitting fluids are very much essential part to consider in the design of pipeline. This paper presents how to calculate these dynamic pressure waves while designing pipelines.

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26

Ismayilova, F. B. "On the pressure distribution in multi-phase pipelines." Azerbaijan Oil Industry, no. 2 (February 15, 2021): 58–61. http://dx.doi.org/10.37474/0365-8554/2021-2-58-61.

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The results of investigations and measurements of actual pressure values carried out recently in technological-field pipelines show that the nature of pressure distribution in multi-phase pipelines differs from those in mono-phase ones. The paper analyzes the aspects affecting the pressure distribution in gas-saturated fluids in the presence of phase transformations. Considering the changes in compressibility of gas-saturated mixture, a mathematical model for pressure distribution through the length of pipeline has been developed. It was defined that depending on the compressibility ratio and

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27

Akintola, Sarah, Emmanuel Folorunsho, and Oluwakunle Ogunsakin. "FLOW ASSURANCE IN KUMUJE WET-GAS PIPELINE: ANALYSIS OF PIGGING SOLUTION TO LIQUID ACCUMULATION." International Journal of Scientific & Engineering Research 9, no. 9 (2018): 380–86. http://dx.doi.org/10.14299/ijser.2018.09.09.

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Liquid condensation in gas-condensate pipelines in a pronounced phenomenon in long transporting lines because of the composition of the gas which is highly sensitive to variations in temperature and pressure along the length of the pipeline. Hence, there is a resultant liquid accumulation in onshore wet-gas pipelines because of the pipeline profile. This accumulation which is a flow assurance problem can result to pressure loss, slugging and accelerated pipeline corrosion if not properly handled.

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28

Zhai, Kejie, Hongyuan Fang, Niannian Wang, et al. "Finite Element Analysis of Steel Pipe Repaired by CIPP Under Fault." ce/papers 8, no. 2 (2025): 848–53. https://doi.org/10.1002/cepa.3174.

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AbstractDue to long‐term service, the mechanical properties of pressure pipelines degrade. The cured‐in‐place pipe lining repair technology can strengthen the mechanical properties of pipelines. The mechanical properties of pipelines repaired with CIPP lining under reverse fault action need to be studied. In this study, the finite element (FE) method is used to establish a model for CIPP pipeline repair under reverse fault action. And the FE model is evaluated by other literature results. Afterwards, the impact of some parameters on the pipeline was analyzed. The research results found that as

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29

Yang, Xiaonan. "Brief Discussion on Non-destructive Testing Methods for Pressure Pipeline Defects." Academic Journal of Science and Technology 9, no. 1 (2024): 162–64. http://dx.doi.org/10.54097/9b1w4v51.

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With the development of China's oil and gas energy industry, the specifications of pressure pipelines for oil and gas transport are also becoming higher and higher, such as large caliber, ultra-thin wall, high pressure and other requirements, and the defects of pressure pipelines are becoming increasingly prominent. Due to the use of the environment, the material of the pipeline and other reasons, the pressure pipeline will produce a variety of defects in use. Non-destructive testing should be carried out on the defects caused by the pipeline in a timely manner, and according to the test resul

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30

Xuan, Liming, Liangliang Jiang, and Jingxuan Liu. "A study on the reduction of high-temperature in the high-pressure piping system of civil aircraft." Journal of Physics: Conference Series 2876, no. 1 (2024): 012003. http://dx.doi.org/10.1088/1742-6596/2876/1/012003.

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Abstract For the study of the bleed air flow process in high-pressure pipelines, theoretical analysis and numerical simulation were used to investigate the temperature drop problem in the pipelines. The effect of bleed air and ambient temperatures on the performance of temperature drop in high-pressure pipelines was discussed in detail. The performance of pipeline insulation before and after applying the insulation layer was also discussed. The results show that the higher bleed air temperature and lower ambient temperature obviously cause a greater drop in the bleed air temperature drop. The

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31

Shao, Bing, Xiang Zhen Yan, and Xiu Juan Yang. "Reliability Analysis of Locally Thinned Submarine Pipelines in ChengDao Oil Field." Applied Mechanics and Materials 94-96 (September 2011): 1527–30. http://dx.doi.org/10.4028/www.scientific.net/amm.94-96.1527.

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Local thinning of submarine pipeline always exists due to the complexity and dynamic of marine environment loads. However, the location and extent of thinning areas are random. Mechanical research on the randomness of local thinning of submarine pipelines is significant for pipeline’s stress analysis and failure evaluation. In this paper, finite element model of locally thinned submarine pipeline is established and based on the Monte-Carlo method, the effect of input random variables on the submarine pipeline’s reliability is analyzed. Probability distribution ranges of equivalent stresses are

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32

Ahmad Azmy, Ariz, Saravanan Karuppanan, and Azmi Abdul Wahab. "Failure Pressure Estimation of Corroded Pipeline with Different Depths of Interacting Defects Subjected to Internal Pressure." Applied Mechanics and Materials 393 (September 2013): 1005–10. http://dx.doi.org/10.4028/www.scientific.net/amm.393.1005.

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Pipelines are one of the most reliable and safest ways to transport oil and gas from one location to another. However, if not handled and maintained properly, they will cause major destruction should one of these pipelines burst. A pipeline which has oil or gas flowing through it will be subjected to internal pressure due to the flow of the oil or gas. Furthermore, the chemical composition of the oil and gas acts as a corrosive agent towards the pipeline. The corrosion eventually becomes defects thus compromising the pipeline integrity. In addition, if two defects are close enough, they are tr

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33

Pashentsev, A. I., and A. A. Garmider. "METHODOLOGICAL ASPECT OF ASSESSING RELIABILITY OF MEDIUM PRESSURE GAS PIPELINES." Construction economic and environmental management, no. 3 (2021): 97–107. http://dx.doi.org/10.37279/2519-4453-2020-3-97-107.

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The author’s vision of the methodological aspect of assessing the reliability of medium pressure gas pipelines is presented. Analysis of existing methods for assessing the reliability of gas pipelines with the identification of positive and negative features was carried out, a methodological approach to assessing the reliability of medium pressure gas pipelines by gas flow rate and pressure was developed and tested, and a scale for identifying the results of reliability calculation was developed. The test conducted on the example of a really working gas pipeline with a test for reliability sho

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34

Sun, Li, Xin Shou Zhang, Qian Qian Sun, and Bo Wen Chen. "Study on Failure Pressure of Corroded Submarine Pipeline under Earthquake." Applied Mechanics and Materials 71-78 (July 2011): 1703–6. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.1703.

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Many marine oil pipelines are subject to varied degrees of corrosion, which gradually increases the leakage and fracture and other accidents. Because the marine pipelines are located in the complex environment and there are many forms of corrosion, the paper only studied parts of the corrosion. The finite element software was used to analyze the failure pressure of internal corroded pipeline under the earthquake, so as to provide the basis for appraisal of corroded marine pipeline.

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35

Li, Tianlei, Jie Xiao, Honglin Zhang, et al. "Numerical Simulation Study of Gas Stratification in Hydrogen-Enriched Natural Gas Pipelines." Energies 18, no. 12 (2025): 3181. https://doi.org/10.3390/en18123181.

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Hydrogen blending in natural gas pipelines facilitates renewable energy integration and cost-effective hydrogen transport. Due to hydrogen’s lower density and higher leakage potential compared to natural gas, understanding hydrogen concentration distribution is critical. This study employs ANSYS Fluent 2022 R1 with a realizable k-ε model to analyze flow dynamics of hydrogen–methane mixtures in horizontal and undulating pipelines. The effects of hydrogen blending ratios, pressure (3–8 MPa), and pipeline geometry were systematically investigated. Results indicate that in horizontal pipelines, hy

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36

Abbasi, Aijaz, and Fakhruldin Mohd Hashim. "Thermodynamic Effects on Hydrate Formation in Deepwater Pipeline." Applied Mechanics and Materials 548-549 (April 2014): 607–11. http://dx.doi.org/10.4028/www.scientific.net/amm.548-549.607.

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Hydrate formation has long been a challenge for flow assurance in deepwater natural gas pipelines. Hydrates are formed when natural gas is brought into contact with water usually at low temperature and high pressure in deepwater pipelines. The pressure is relatively high in deepwater pipelines, so it is entirely possible to meet the hydrate formation conditions and pose a significant operational and security challenge. This study provides a means to ascertain the thermodynamic properties for hydrate formation in a deepwater gas pipeline. The thermodynamic properties are to be assumed between t

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37

Radermacher, Ladislau, Cristian Rădeanu, and Ludovic Călcâi. "Behavior of Corroded Aboveground Pipes Subjected to Internal Pressure." Mining Revue 29, no. 3 (2023): 91–98. http://dx.doi.org/10.2478/minrv-2023-0027.

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Abstract Corrosion is accountable for numerous malfunctions and leakages in gas pipelines. In instances of external corrosion, due to the internal pressure within the pipes, stress concentrations can occur around the corroded areas. These, in the presence of cavities or cracks resulting from corrosion, may amplify the risk of pipeline failure. Consequently, as the wall thickness diminishes due to corrosion, the pipeline’s ability to withstand internal pressure declines. In the case of corrosion, the pressure at which a corroded pipe might collapse is significantly lower than that of an uncorro

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38

Cong, Shen, Ke Tong, Dong Feng Li, Zhi Xin Chen, and Ke Cai. "Leakage Failure Analysis of the ERW Steel Pipeline." Materials Science Forum 993 (May 2020): 1224–29. http://dx.doi.org/10.4028/www.scientific.net/msf.993.1224.

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This paper provides a thorough investigation on the leakage reason of the ERW steel pipeline in an oil field. Through appearance inspection, physicochemical inspection, metallographic inspection and scanning electron microscope (SEM), it was found that the main reason of corrosions was caused by residual liquid at the bottom of the pipeline and O2 and CO2 in the air pressure test. The corrosion medium was large volume of O2 and CO2 forming continuously saturated corrosive aqueous solution in small volume of residual liquid, and the corrosion type was the under-deposit corrosion. It is recommen

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Lian, Fanghua. "Design of A Coal Mine Gas Pipeline Detection System." Academic Journal of Science and Technology 14, no. 1 (2025): 304–8. https://doi.org/10.54097/y7a79m89.

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Safety monitoring of coal mine gas pipelines is crucial for ensuring the safety of mine operations, especially in preventing pipeline leaks. Therefore, timely and accurate monitoring of pipeline status has become crucial. This article designs a pressure and leakage detection system for low-pressure gas pipelines in coal mines. The system is based on single-chip technology and integrates sound wave detection and wireless communication technology. The article elaborates on the design concept of the overall plan, including the main design of hardware circuits and software programs, aiming to achi

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Hu, Jianyong, Qingbo Wang, Yuzhou Zhang, Zhenzhu Meng, Jinxin Zhang, and Jiarui Fan. "Numerical and Experimental Study on the Process of Filling Water in Pressurized Water Pipeline." Water 15, no. 14 (2023): 2508. http://dx.doi.org/10.3390/w15142508.

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As an important working condition in water conveyance projects, the water filling process of pipelines is a complex hydraulic transition process involving water–air two-phase flow with sharp pressure changes that can easily cause pipeline damage. In light of the complex water–air two-phase flow during pipeline water filling, this study explores the water filling process of right-angle elbow pressure pipelines using CFD numerical simulations and physical model experiments, analyzing changes in water phase volume fraction, water-gas two-phase flow patterns, and hydraulic parameters in the pipeli

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Hussain, Dr Mohammad Nasir, Huda Khalil Ibrahim, Ahmed kareem Hasan, and Ahmed Abdul Jaleel Haddar. "Surge Pressure Effect on Crude Oil Export Pipelines to Petroleum Ports." Journal of Petroleum Research and Studies 5, no. 1 (2014): 245–59. http://dx.doi.org/10.52716/jprs.v5i1.141.

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Pressure surges in pipelines are created by a change in momentum of the moving stream (e.g. valve closure). The occurrence of pressure surges should be determined by transient pressure analysis .Surge pressures are particularly critical for pipelines transporting liquid fluids, because of the high density and lower compressibility compared to gaseous fluids. Although damping of the pressure wave initiated at the point of blockage occurs as it travels upstream, surge may in some cases result in the highest pipeline pressure at a location well upstream of the point of origin. This may occur in p

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Han, Xinxing. "Study on risk prevention and control of third-party construction damage of underground pressure pipelines." E3S Web of Conferences 385 (2023): 01023. http://dx.doi.org/10.1051/e3sconf/202338501023.

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The utilization scale of underground pressure pipelines such as gas, heat and water supply pipelines is increasing, and pipeline accidents occur frequently, among which the third-party construction damage has become one of the main factors, so it is crucial to prevent and control the risk of third-party construction damage. This paper probes into the risk prevention and control measures for the third-party construction damage of underground pressure pipelines from four aspects of management, laws and regulations, science and technology and culture. The research results show that only by taking

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Han, Xinxing, and Zhuangzhuang Zhang. "Research of Risk Identification and Prevention of Underground Pressure Pipelines Damage Caused by External Disturbance." Journal of Architectural Research and Development 7, no. 3 (2023): 31–39. http://dx.doi.org/10.26689/jard.v7i3.4876.

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External disturbance is an important cause of underground pressure pipeline damage, which leads to accidents, and it is crucial to study the risk of damage caused by external disturbance and come up with proper prevention and control measures. We reviewed literature on risk identification of underground pressure pipelines damage due to external disturbance was conducted, and a list of risk factors was formed. Based on the list of risk factors, fault tree analysis was carried out on underground pressure pipelines damage caused by external disturbances, and risk prevention and control measures w

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Pekolj, Jošt, Anton Bergant, and Matjaž Perpar. "ANALYTICAL AND NUMERICAL ANALYSIS OF TRAPPED AIR POCKET DYNAMIC RESPONSE DUE TO PRESSURE CHANGE IN LIQUID-FILLED PIPELINES." Journal of Energy Technology 15, no. 2 (2023): 21–30. https://doi.org/10.18690/jet.15.2.21-30.2022.

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This paper serves as an overview of the different approaches to modelling the filling and emptying of liquid-filled pipelines. Specifically, it compares an analytical and numerical analysis of the start-up of a liquid column in a one-dimensional pipeline with a trapped air pocket. The analytical analysis is based on the premise that there are no pressure waves travelling in the water column. For this reason, it is not suitable for pipeline systems with very small initial trapped air pockets or very high reservoir pressures. In the pipelines with parameters, as shown in this paper, the results

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Liu, Chang Jun, Jun Ma, Xiao Qiang Li, and Yong Su. "Cavitation Erosion Behavior in Different Throttling Pipelines." Advanced Materials Research 710 (June 2013): 302–5. http://dx.doi.org/10.4028/www.scientific.net/amr.710.302.

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Throttling pipelines are adopted to improve their cavitation erosion resistance, while there often exists cavitation erosion, large energy loss and big noise in throttling pipelines. In this study, the three-dimensional (3D) model of the secondary throttling pipeline was constructed according to the actual structure and parameters. It has been calculated that compared to the ordinary throttling pipeline, the secondary throttling pipeline makes the maximum velocity decreased from 19.827 to 19.168 m/s, and the minimum negative pressure increased from-2.02 to-1.77 MPa. The results is significant

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Zhang, Yong Qiang, Li Liu, Zhi Gang Yang, and Chuan Ta. "Combination Application Strategy of Non-Metal Compound Pipe and its Verification." Materials Science Forum 944 (January 2019): 873–80. http://dx.doi.org/10.4028/www.scientific.net/msf.944.873.

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The service environment of Yanchang oilfield was researched. The corrosion environment of the oil and gas area of Yanchang group is different, the summer rainstorm is frequent and the landslide debris flow is easy to occur. The theoretical analysis and pilot test of pipeline performance have been carried out. We suggest that the steel pipeline, t FRP pipeline and the flexible composite pipe for high pressure transmission can be used in Yanchang group. The combined application strategy of steel pipeline, FRP pipeline and flexible composite pipe for high pressure transmission was proposed and ve

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Li, Xufeng, Shengzi Lu, Cong Deng, Weijian Luo, and Ruizeng Yang. "Investigation of cracks in the feed pipe of reactor in the Coal-to-Oil hydrogenation unit." Journal of Physics: Conference Series 2951, no. 1 (2025): 012034. https://doi.org/10.1088/1742-6596/2951/1/012034.

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Abstract Pressure pipelines, as special pressure-bearing equipment, are widely used in industries such as petroleum, petrochemicals, chemicals, and electricity. They often operate in environments characterized by high temperatures, high pressures, and corrosive media. Once accidents occur, they can have catastrophic consequences. This paper focuses on the analysis of cracks discovered during regular inspections of a feed pipeline in a hydrogenation unit. Macroscopically, there are approximately 12 cracks, with lengths ranging from 10 to 20 mm, propagating from the outer surface inward but not

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Adegbola, A. A., I. I. Ozigis, and I. D. Muhammad. "Conceptual Design of Gas Distribution Pipeline Network for Estates in Nigeria." Nigerian Journal of Technology 40, no. 1 (2021): 25–36. http://dx.doi.org/10.4314/njt.v40i1.5.

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This work presents the conceptual design of a gas distribution pipeline network for estates in Nigeria using the University of Abuja Staff Quarters as a case study. The problem statement was the aggressive consumption of cooking gas, referred to as liquefied petroleum gas (LPG), without gas pipeline networks infrastructures to homes and estates across Nigeria but relies on cylinders with its attendant danger. The methodology includes the determination of the gas demand from the average monthly gas consumption in each of the households, the elevation head, diameter of the pipelines, gas velocit

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Arumugam, Thibankumar, Suria Devi Vijaya Kumar, Saravanan Karuppanan, and Mark Ovinis. "The Influence of Axial Compressive Stress and Internal Pressure on a Pipeline Network: A Review." Applied Sciences 13, no. 6 (2023): 3799. http://dx.doi.org/10.3390/app13063799.

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Due to their exceptional structural integrity, steel pipelines are the main component for oil and gas transmission. However, these pipelines are often affected by corrosion, despite corrosion protection, because of harsh working conditions. In addition to corrosion defects, pipelines are often subjected to multiple external loads. The combination of corrosion defects and external loads can significantly reduce the failure pressure, resulting in various failure behaviors. This reduction in failure pressure is especially critical in pipe bends as they are the weakest link in a pipeline. This pap

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Li, Xing Gao, and Chao Jie Duan. "Determining Range of Saturated Ground around Leakage Pipeline Using Unsteady Seepage Numerical Analysis." Applied Mechanics and Materials 204-208 (October 2012): 609–13. http://dx.doi.org/10.4028/www.scientific.net/amm.204-208.609.

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It is of great significance to estimate the range of saturated ground around leakage pipelines when tunneling near the pipelines. The range of saturated ground can be determined from the distributions of the water content and pore-water pressure in ground around the leakage pipelines. The leakage pipeline being modeled as an injection well, a series of unsteady seepage numerical analysis is performed to understand the effects of the internal water pressure of pipelines on the range of saturated ground surrounding the pipelines, and computation results show the exponential relationship between

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