Automation in Petro-Chemical Industry

The Discuss on Foreign Oil Product Pipeline Operation Technology Advancement

2018, 54(4): 0-0.

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During the 12th five-year plan period, China oil product pipeline developed rapidly. The main problem was few kinds of oil product transportation, insufficient capacity of mixed oil treatment, poor interface batch detection. It was important to improve China oil product pipeline construction and operation level through learning foreign oil product pipeline idea. The paper selected comprehensive Russian oil product pipeline standard , and the applicability of foreign oil products pipeline operation technology was expounded, which was based on China oil product pipeline practice, including arrangement principle for transporting various oil product, optimize pipeline transportation process design and alternate oil interface adding isolation liquid to reduce the amount of mixing oil, improve facilities operating procedure at initial station to reduce initial mixing oil, the control concentration of the gasoline - diesel cutting point is 5% ~ 95% to reduce the length of the intermediate mixture length, and the blending treatment of mixed oil was preferred. Finally, reasonable recommendations are made to raise the level of construction and operation standards of Chinese oil product pipeline.

Cable tray fill rate calculation code in NEC standard

2018, 54(4): 0-0.

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The cable tray fill rate calculation in national standards is always simple and not much clear. Concerning this issue, based on 392.22 section of NFPA National Electrical Code 2014 Edition, this paper puts forward concepts of cable tray fill rate for different cable laying methods, refers to concept of cable tray fill margin coefficient, and then presents the fill rate calculation for different cable trays and different cables, and in the end, establishes the calculation flow diagram which can be used in chemical pipeline 3D software for cable tray fill rate automatic calculation.

Inspection and reinforcement of information security of the DCS system in service

2018, 54(4): 0-0.

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Based on the analysis of the current status of industrial control system of network information security, industrial control systems is discussed and the difference between traditional information technology system, through the network information of the control system of a typical industrial inspection, put forward a practical and reliable network security reinforcement scheme and implementation.

Prospect and Application for Chemical Industrial Intelligent Plant

2018, 54(4): 0-0.

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The development of artificial intelligence (AI) will improve the acceleration of all the society fields from digitalization, network to intelligence. The chemical industry has a relatively high demand for information and intelligence because of its complex design, long production process and large flexibility. So AI has a great development space in process industry. Firstly, this paper reviews the development of intelligence: from the strategy of AI in various countries to the achievement of enterprises, and then the progress of intelligent process industry. Secondly, based on the field characteristics of chemical industry, the intelligent application methods are discussed from four aspects as intelligent design, intelligent control, intelligent production and intelligent management. Moreover, limitations have also been analyzed from two aspects as industry characteristics and investment benefits. Finally, the prospect of AI development and application in chemical industry is expected.

Application of Predictive PI Control Based on Dynamic Decoupling in Electroslag Remelting

2018, 54(4): 0-0.

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Application of Air Purge Method on Pressure Measurement in Acid Plant

2018, 54(4): 0-0.

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To avoid the dew point corrosion of acid gas in sulfuric acid plant，using air purge method to measure pressure、differential pressure of acid gas．The construction of air purge method、selection of purge device、preheating of purge air and installation of transmitters are introduced. Combining with engineering example, the specification of purge device、installation of air purge method and points for attention in maintenance are discussed.

Design and development of petroleum engineering metrology management system.

2018, 54(4): 0-0.

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The system named petroleum engineering measurement management information is designed for the measurement management of the engineering.And its software copyright registration number is 2017SR496193. Through adopting the advanced technology of rigorous design which following the principle of flexibility,useful,versatility, safety,it can set standard for the procedures of main business and the management method of basic data,as well as explore 9 different functions including 62 divided modules which can be applied to warn by massage, download files at high speed, make automatic generation of visual chart and analysis and statistics. At present there are 10 agencies in petroleum engineering company who has put the system into application,so as to set up the management of petroleum engineering measurement database,and realize the work flow measurement, measurement specification, the unification of the measurement data information management and network sharing.

Study on Measuring Method of Wellhead Uplift Displacement of Offshore Production Platform

2018, 54(4): 0-0.

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For the dense oil wells, injection of high pressure hot steam will lead to casing elongating under thermal stress, resulting in the wellhead uplifting by the consequent force. The wellhead uplift phenomenon will have a bad influence on well output and lifespan, cause the production pipeline bending, and bring potential security risk. For this problem, this article puts forward a displacement monitoring alarm system to monitor the uplift displacement of the wellhead in real time. In the article, we also studied five measuring methods of displacement, including resistivity method, magnetostriction method, laser method, pull rope method and eddy current method. After comparison the principle, strength/weakness and applicability in offshore explosive environment of the five measuring methods, we come to a conclusion that Magnetostriction method and pull rope method are recommended for this system.

A new technology for separated layer water flooding

Chang-Jing LIANG

2018, 54(4): 0-0.

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Development and application of valve position feedback signal

2018, 54(4): 0-0.

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Abstract：This paper develops and applies valve position feedback signal of control valve in oil and gas ?field. Using DCS ( distributed control system ) and valve positioner function development, finally in the operating station real-time monitoring valve State. When the controller PID output op value is inconsistent with the field valve position feedback PV value, the operator station gives a fault alarm signal to remind the operator to verify the operation of the control valve on site. Valve position deviation early warning function, provide valuable emergency rescue time for field devices. Key words：control valve, valve position feedback, fault alarm, operation

Research on the fault treatment methods of video monitoring system about natural gas well

2018, 54(4): 0-0.

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With gradual construction of digital gas fields,technology of remote monitoring video surveillance has been a wide-scope applications as an important method to production management.In view of the big challenge status of operation and maintenance work on video monitoring system , the paper presents the three-step method for fault treatment of video monitoring system combining with intelligent detecting system, based on familiar video monitoring fault on natural gas well. The method can be used in the production,as it can be used to shorten the time of dealing with fault treatment of video monitoring system for front-line staff.

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