Results 21 to 30 of about 2,302,430 (290)

Calculating method of coordinate of pipeline centerline based on a small caliber inertial measurement unit

open access: yesYou-qi chuyun, 2021
In order to improve the calculation accuracy of the inertial measurement coordinate data of in-service pipelines and thereby promote the pipeline digitization process with high quality, a calculation model of dead reckoning error of a small-caliber ...
Yi LIU   +5 more
doaj   +1 more source

Design of solution mining technology for thick-interlayer salt beds in Huai'an salt cavern gas storage

open access: yesYou-qi chuyun, 2020
For the full use of proven high-quality salt resources to build salt cavern gas storage and minimizing the impact of thick interlayer in salt beds on solution mining, it is required to carry out research on solution mining technology under the condition ...
Deshan QI   +6 more
doaj   +1 more source

Design and application of laser gas leakage monitoring system at gas station

open access: yesYou-qi chuyun, 2021
In order to improve the safety of outdoor natural gas stations and detect the natural gas leakage in the process area of the stations in time, a laser gas leakage monitoring system was designed according to the principle of absorbing the methane spectrum
Mi YAN, Xiaojun YUAN, Wenyong GUAN
doaj   +1 more source

Accelerated mining method for salt-cavern gas storage

open access: yesYou-qi chuyun, 2020
Underground gas storage, which serves as the auxiliary facility of the nature gas pipeline network, is veryimportant to maintain the stability of gas supply. In recent years, the construction of underground gas storage developsrapidly in China.
Jun HE   +4 more
doaj   +1 more source

Gas flow in pipeline networks

open access: yesNetworks & Heterogeneous Media, 2006
We introduce a model for gas flow in pipeline networks based on the isothermal Euler equations. We model the intersection of multiple pipes by posing an additional assumption on the pressure at the interface. We give a method to obtain solutions to the gas network problem and present numerical results for sample networks.
Mapundi K. Banda   +2 more
openaire   +1 more source

Development status and improvement strategy of in-line inspection technology and management

open access: yesYou-qi chuyun, 2020
Pipeline defects have always been the dominant factor leading to pipeline failure. Using in-line inspectiontechnology to inspect and identify various pipeline defects has become a widely acknowledged practice in Chinaand abroad.
Zhiping WU   +5 more
doaj   +1 more source

Research on market products and economic analysis of underground gas storage in China

open access: yesYou-qi chuyun, 2021
With the official operation of China Oil & Gas Piping Network Corporation and the encouragement and support of national policies for the marketization of underground gas storage, the design of market storage products has become an inevitable demand for ...
Kai LI, Jieqiong GUO, Tao ZHOU
doaj   +1 more source

Development and outlook of China's pipeline transportation technologies under energy security strategy

open access: yesYou-qi chuyun, 2022
With the continuous development of pipeline industry in China, the third generation of pipeline technology system, represented by China–Russia Eastern Gas Pipeline, has been established, and China's overall technical level of using pipeline for energy ...
Jian-lin DING, Xin XI, Dui-hong ZHANG
doaj   +1 more source

Intelligent risk management and control measures for buried metal pipeline under strong DC interference

open access: yesYou-qi chuyun, 2020
Under the influence of high voltage direct current transmission (HVDC), urban rail transit and other DC systems, the buried metal pipelines nearby may be subject to strong DC interference and high pipe-to-ground voltage may be resultedin, which may lead ...
Yong LIU   +3 more
doaj   +1 more source

Modelling of transient gas-liquid flow and pigging in pipes [PDF]

open access: yes, 1999
More and more transient gas-liquid operations in pipes are being successfully applied in the oil and gas industry. Pigging in two-phase pipelines, to remove liquid accumulation or for cleaning purposes, is an important transient operation.
Lima, P. C. R.
core   +7 more sources

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