2205 duplex stainless steel (DSS) possesses favorable mechanical property and good corrosion resistance at the same time, and has been a new material and applied widely in petroleum, natural gas, ocean and chemistry i...2205 duplex stainless steel (DSS) possesses favorable mechanical property and good corrosion resistance at the same time, and has been a new material and applied widely in petroleum, natural gas, ocean and chemistry industry etc from 1980’s in some advanced countries and from 1990’s in China. One natural gas headstream project possesses abundant natural gas and provides 80% of total quantity gas for West-East Pipeline Project. The project includes a 13 km length pipeline and a gas treatment plant that purify gas about 12×10~9 m^3 every year. The Cl^- concentration in the water separated from gas is about 10%, and so the corrosion of medium is very violent to the pipeline. 2205 DSS material has been applied successfully to the project in 2004. This is the first time of such a mass of DSS material application in a project in China. The characteristic of 2205 DSS and application in natural gas pipeline project has been introduced in this paper.展开更多
The West-East Gas Transportation Pipeline (WEGTP) is a strategic project for the energy source transport, which is about 3900 km long. The remote sensing technique has the unique superiority to obtain the geographic i...The West-East Gas Transportation Pipeline (WEGTP) is a strategic project for the energy source transport, which is about 3900 km long. The remote sensing technique has the unique superiority to obtain the geographic information. The remote sensing technique is used in WEGTP to interpret comprehensively the information of geology, landform and humane geography along the route of pipeline, and to update the topographic map along the route of Zhengzhou Shanghai section pipeline, and to interpret finely the crossing point of the Nanjing Changjiang river crossing section. Through the overlap of TM image and the DEM, the complicated landform information can be grasped by the three dimensional flight over the section of complicated geography. The application achievements are managed with RS-GIS service system.展开更多
Based on the principle of active sonar detection, a pipeline sonar system has been developed for detecting the water accumulated in underground gas-pipelines, and the effectiveness of this system verified through fiel...Based on the principle of active sonar detection, a pipeline sonar system has been developed for detecting the water accumulated in underground gas-pipelines, and the effectiveness of this system verified through field-testing. The working process, experimental results and some considerations in the determination of sonar parameters are described in this paper.展开更多
With the increase in energy demand, the demand for oil and gas transmission pipes, particularly high-grade longitudinal submerged arc welded pipes （LSAWs）, have been growing in recent years. The construction of the ...With the increase in energy demand, the demand for oil and gas transmission pipes, particularly high-grade longitudinal submerged arc welded pipes （LSAWs）, have been growing in recent years. The construction of the 2nd West -East natural gas transmission pipeline project shows that the oil and gas pipeline construction has entered a new phase of development with X80 pipes being applied in large scales for the first time in China. This paper briefly introduces the 2nd West-East natural gas transmission pipeline project and its main technical requirements with the focus on the features of API standard 5L X80 grade Ф 1219 mm series of U-ing-O-ing-Expanding （ UOE ） LSAW pipes, which Baosteel developed with the integrated technology for the 2nd West-East natural gas transmission pipeline project. The analysis shows the extra-low carbon content, the high contents of manganese and niobium, the fine microstructure, the high strength,the toughness and the good weldability of X80 pipes meet the requirements of ＂the technical specification of LSAW linepipes for the 2nd West-East natural gas transmission pipeline project in China＂. By the end of June 2010, Baosteel had totally produced 322000 t of Ф 1219 mm X80 UOE steel pipes, which have been successfully used in the 2nd West-East natural gas transmission pipeline project, thus filling the gap of the production of large diameter X80 UOE LSAW pipes in China.展开更多
Cyber-physical-system（CPS） has been widely used in both civil and military applications.Wireless sensor network（WSN） as the part and parcel of CPS faces energy problem because sensors are battery powered,which res...Cyber-physical-system（CPS） has been widely used in both civil and military applications.Wireless sensor network（WSN） as the part and parcel of CPS faces energy problem because sensors are battery powered,which results in limited lifetime of the network.To address this energy problem,we take advantage of energy harvesting device（EHD） and study how to indefinitely prolong oil pipeline monitoring network lifetime by reasonable selecting EHD.Firstly,we propose a general strategy worst case-energy balance strategy（WC-EBS）,which defines worst case energy consumption（WCEC） as the maximum energy sensor node could expend for oil pipeline monitoring WSN.When the energy collected by EHD is equal or greater than WCEC,network can have an unlimited lifetime.However,energy harvesting rate is proportional to the price of EHD,WC-EBS will cause high network cost.To reduce network cost,we present two optimization strategies,optimization workloadenergy balance strategy（OW-EBS） and optimization first nodeenergy balance strategy（OF-EBS）.The main idea of OW-EBS is to cut down WCEC by reducing critical node transmission workload;OF-EBS confirms critical node by optimizing each sensor node transmission range,then we get the optimal energy harvesting rate in OF-EBS.The experimental results demonstrate that OF-EBS can indefinitely extend network lifetime with lower cost than WC-EBS and OW-EBS,and energy harvesting rate P in each strategy satisfies Pof-EBS≤P（OW-EBS）≤PWC-EBS.展开更多
The need for safe operation and effective maintenance of pipelines grows as oil and gas demand rises.Thereby,it is increasingly imperative to monitor and inspect the pipeline system,detect causes contributing to devel...The need for safe operation and effective maintenance of pipelines grows as oil and gas demand rises.Thereby,it is increasingly imperative to monitor and inspect the pipeline system,detect causes contributing to developing pipeline damage,and perform preventive maintenance in a timely manner.Currently,pipeline inspection is performed at pre-determined intervals of several months,which is not sufficiently robust in terms of timeliness.This research proposes a drone and artificial intelligence reconsolidated technological solution(DARTS) by integrating drone technology and deep learning technique.This solution is aimed to detect the targeted potential root problems-pipes out of alignment and deterioration of pipe support system-that can cause critical pipeline failures and predict the progress of the detected problems by collecting and analyzing image data periodically.The test results show that DARTS can be effectively used to support decision making for preventive pipeline maintenance to increase pipeline system s afety and resilience.展开更多
文摘2205 duplex stainless steel (DSS) possesses favorable mechanical property and good corrosion resistance at the same time, and has been a new material and applied widely in petroleum, natural gas, ocean and chemistry industry etc from 1980’s in some advanced countries and from 1990’s in China. One natural gas headstream project possesses abundant natural gas and provides 80% of total quantity gas for West-East Pipeline Project. The project includes a 13 km length pipeline and a gas treatment plant that purify gas about 12×10~9 m^3 every year. The Cl^- concentration in the water separated from gas is about 10%, and so the corrosion of medium is very violent to the pipeline. 2205 DSS material has been applied successfully to the project in 2004. This is the first time of such a mass of DSS material application in a project in China. The characteristic of 2205 DSS and application in natural gas pipeline project has been introduced in this paper.
文摘The West-East Gas Transportation Pipeline (WEGTP) is a strategic project for the energy source transport, which is about 3900 km long. The remote sensing technique has the unique superiority to obtain the geographic information. The remote sensing technique is used in WEGTP to interpret comprehensively the information of geology, landform and humane geography along the route of pipeline, and to update the topographic map along the route of Zhengzhou Shanghai section pipeline, and to interpret finely the crossing point of the Nanjing Changjiang river crossing section. Through the overlap of TM image and the DEM, the complicated landform information can be grasped by the three dimensional flight over the section of complicated geography. The application achievements are managed with RS-GIS service system.
文摘Based on the principle of active sonar detection, a pipeline sonar system has been developed for detecting the water accumulated in underground gas-pipelines, and the effectiveness of this system verified through field-testing. The working process, experimental results and some considerations in the determination of sonar parameters are described in this paper.
文摘With the increase in energy demand, the demand for oil and gas transmission pipes, particularly high-grade longitudinal submerged arc welded pipes （LSAWs）, have been growing in recent years. The construction of the 2nd West -East natural gas transmission pipeline project shows that the oil and gas pipeline construction has entered a new phase of development with X80 pipes being applied in large scales for the first time in China. This paper briefly introduces the 2nd West-East natural gas transmission pipeline project and its main technical requirements with the focus on the features of API standard 5L X80 grade Ф 1219 mm series of U-ing-O-ing-Expanding （ UOE ） LSAW pipes, which Baosteel developed with the integrated technology for the 2nd West-East natural gas transmission pipeline project. The analysis shows the extra-low carbon content, the high contents of manganese and niobium, the fine microstructure, the high strength,the toughness and the good weldability of X80 pipes meet the requirements of ＂the technical specification of LSAW linepipes for the 2nd West-East natural gas transmission pipeline project in China＂. By the end of June 2010, Baosteel had totally produced 322000 t of Ф 1219 mm X80 UOE steel pipes, which have been successfully used in the 2nd West-East natural gas transmission pipeline project, thus filling the gap of the production of large diameter X80 UOE LSAW pipes in China.
基金partially supported by National Natural Science Foundation of China(61472072)National Basic Pre-research Program of China(2014CB360509)
文摘Cyber-physical-system（CPS） has been widely used in both civil and military applications.Wireless sensor network（WSN） as the part and parcel of CPS faces energy problem because sensors are battery powered,which results in limited lifetime of the network.To address this energy problem,we take advantage of energy harvesting device（EHD） and study how to indefinitely prolong oil pipeline monitoring network lifetime by reasonable selecting EHD.Firstly,we propose a general strategy worst case-energy balance strategy（WC-EBS）,which defines worst case energy consumption（WCEC） as the maximum energy sensor node could expend for oil pipeline monitoring WSN.When the energy collected by EHD is equal or greater than WCEC,network can have an unlimited lifetime.However,energy harvesting rate is proportional to the price of EHD,WC-EBS will cause high network cost.To reduce network cost,we present two optimization strategies,optimization workloadenergy balance strategy（OW-EBS） and optimization first nodeenergy balance strategy（OF-EBS）.The main idea of OW-EBS is to cut down WCEC by reducing critical node transmission workload;OF-EBS confirms critical node by optimizing each sensor node transmission range,then we get the optimal energy harvesting rate in OF-EBS.The experimental results demonstrate that OF-EBS can indefinitely extend network lifetime with lower cost than WC-EBS and OW-EBS,and energy harvesting rate P in each strategy satisfies Pof-EBS≤P（OW-EBS）≤PWC-EBS.
基金This project was partially supported by the Center for Midstream and Management Science at Lamar University,Beaumont,Texas,USA.
文摘The need for safe operation and effective maintenance of pipelines grows as oil and gas demand rises.Thereby,it is increasingly imperative to monitor and inspect the pipeline system,detect causes contributing to developing pipeline damage,and perform preventive maintenance in a timely manner.Currently,pipeline inspection is performed at pre-determined intervals of several months,which is not sufficiently robust in terms of timeliness.This research proposes a drone and artificial intelligence reconsolidated technological solution(DARTS) by integrating drone technology and deep learning technique.This solution is aimed to detect the targeted potential root problems-pipes out of alignment and deterioration of pipe support system-that can cause critical pipeline failures and predict the progress of the detected problems by collecting and analyzing image data periodically.The test results show that DARTS can be effectively used to support decision making for preventive pipeline maintenance to increase pipeline system s afety and resilience.
