Results 21 to 30 of about 32,628 (309)

Prediction model of decompression wave velocity in supercritical CO2 pipelines containing impurities

open access: yesYou-qi chuyun, 2021
Once a supercritical CO2 pipeline fractures, decompression wave will appear at both end of the crack. Hence, the calculation of the decompression wave velocity during the pipeline fracturing is critical for the prediction and control of pipeline fracture.
Yuxing LI   +3 more
doaj   +1 more source

Risk Assessment of Oil and Gas Pipeline Based on Vague Set-Weighted Set Pair Analysis Method

open access: yesMathematics, 2023
This study focuses on a risk assessment method for oil and gas pipelines. Oil and gas pipelines are usually constructed in a complex geological environment and are potentially dangerous.
Aorui Bi, Shuya Huang, Xinguo Sun
semanticscholar   +1 more source

Development and application of adjustable electro-hydraulic actuator

open access: yesYou-qi chuyun, 2020
In view of the current situation that adjustable electro-hydraulic actuators for pipeline depend on import, effortshave been made to the localization of adjustable electro-hydraulic actuator to guarantee the safety of national energy, toimprove the ...
Xiliang YANG   +6 more
doaj   +1 more source

Radiological risk assessment to marine biota from exposure to NORM from a decommissioned offshore oil and gas pipeline.

open access: yesJournal of Environmental Radioactivity, 2022
Scale residues can accumulate on the interior surfaces of subsea petroleum pipes and may incorporate naturally occurring radioactive materials (NORM). The persistent nature of 'NORM scale' may result in a radiological dose to the organisms living on or ...
Amy E MacIntosh   +6 more
semanticscholar   +1 more source

Optimized preparation method of natural gas pipeline transportation plan based on minimum energy consumption

open access: yesYou-qi chuyun, 2021
At present, the natural gas pipeline transportation plan is mainly prepared based on the artificial experience, which requires considerable time and energy, unfavourable for the overall optimization of the plan.
Shuo JIN   +3 more
doaj   +1 more source

Method for detection of deformation stress of large-diameter and high-pressure pipeline under complex terrain

open access: yesYou-qi chuyun, 2020
China-Russia Eastern Gas Pipeline is characterized by ultra-large diameter, high grade steel (X80) and high pressure rating. It is located in the area with geologically active permafrost and semi-permafrost zones in the north, where is prone to ...
Yukun LI   +4 more
doaj   +1 more source

Enlightenment of natural gas supply guarantee strategy of European Union for China's natural gas supply security

open access: yesYou-qi chuyun, 2023
At present, China's natural gas supply has the problems of unbalanced supply structure, aggravated contradiction between supply and demand, insufficient gas storage facilities, and imperfect transportation and distribution network, which seriously ...
Baodong YAN, Yi YANG, Weichao YU
doaj   +1 more source

FEATURES OF SUBJECTIVE SIGNS OF UNAUTHORIZED CONNECTION TO OIL PIPELINES, OIL PRODUCT PIPELINES AND GAS PIPELINES

open access: yesВестник Казанского юридического института МВД России, 2023
Введение: в статье рассматриваются особенности регламентации признаков субъекта и субъективной стороны преступления в виде самовольного подключения к нефтепроводам, нефтепродуктопроводам и газопроводам. Целью статьи является получение нового знания относительно особенностей субъективных признаков данного преступления с выработкой на этой основе выводов
openaire   +1 more source

Establishment of leakage detection model for oil and gas pipeline based on VMD-MD-1DCNN

open access: yesEngineering Research Express, 2022
In order to solve the problem of recognition error caused by noise interference in oil and gas pipeline signal and traditional pipeline leakage detection relies on expert experience to extract features manually, an oil and gas pipeline leakage detection ...
Dan-Ni Yang   +3 more
semanticscholar   +1 more source

Research Progress on Interference and Protection of Grounding Electrodes of HVDC Transmission on Buried Pipeline [PDF]

open access: yesCailiao Baohu
With the increasing number of high voltage direct current(HVDC) transmission projects in China,the issue of interference from HVDC system grounding electrodes on buried metal pipelines has become increasingly prominent.In order to conduct accurate ...
GAO Jie, TIAN Haizhou, LI Shaofei, LIU Tianhui, GUO Xiaodong, AN Bing, LU Tao
doaj   +1 more source

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