Oil well metering data is the key parameter for dynamic analysis of oilfield production.The traditional three-stage station construction model is applied.Metering is followed after gas and liquid separated in the separator,which lead to high construction costs.Aiming at the problem,a three-phase flow metering system composed of electromagnetic tomography,Venturi and microwave detection technologies is proposed.The system achieves real-time and automatic collection of oil,gas,and water metering data without separation in single wells or production areas,thereby surface process is optimized.Accuracy and timeliness of production operation management and geological reservoir analysis are improved.Construction and operating costs are reduced.
Aiming at the problems of insufficient maintenance and high failure rate of instru-ment and control equipment,A new type of intelligent equipment management system,SAMS system has been introduced by a certain refining and chemical company.Relying on intelligent diagnosis,system integration and other technologies of instrument and control equipment,the system has expanded the application scope of predictive maintenance of instrument and control equipment,and promoted the transformation of operation and maintenance mode from post ma-intenance to proactive maintenance to improve operation and maintenance efficiency.A SAMS system based on FDT technology is introduced.Then it demonstrated the real-time monitoring function of instrument and control equipment through the SAMS system.The practical applica-tion of using ValveLink software for advanced diagnosis of regulating valves is explained.The application results show that the SAMS system can improve equipment utilization rate,reduce equipment maintenance costs,and reduce equipment failures,achieving cost reduction and effi-ciency improvement in factories.
With the continuous increase in oil/gas/water output and the complex and variable production characteristics,higher requirements have been placed on the accuracy and operation-al adaptability of flow measurement instruments.Based on the ground process design and on-site instrument type selection tests,optimized selection of oil/gas/water three-phase flow meas-urement instruments and tank oil-water level instruments has been conducted through test e-valuation and error analysis.The utilization rate of instruments has been improved.Good appli-cation results will be achieved if further improvements and refinements are being applied and perfected in later applications.
Online corrosion monitoring is an important part of solving corrosion problems in re-fining and chemical enterprises in the new era.It plays an important role in equipments maintai-ning in refining and chemical enterprises.Taking online corrosion monitoring technology in re-fining and chemical enterprises as research object,the role of online corrosion monitoring tech-nology in refining and chemical enterprises is briefly introduced,the application of online corro-sion monitoring technology in refining and chemical enterprises is respectively elaborated from the aspects of on-site corrosion testing equipment,resistance probe monitoring,circulating wa-ter monitoring technology and fixed-point thickness measurement technology.The online corro-sion monitoring scheme is discussed based on monitoring frequency,methods,location and oth-er aspects.On this basis,the development direction of online corrosion monitoring technology is researched further.
在化工生产中,为了对生产过程进行有效控制,必须对工艺过程气体实时取样监测并分析其成分及浓度.工艺过程取样气体通常温度较高,且含有大量气态水,在进入在线分析仪表前,需要对取样气体冷凝预处理.介绍了一种新型冷凝温度自动控制系统,采用PLC对冷凝温度实时采样和闭环自动控制,实现了对冷凝温度的精确控制.介绍了控制系统的结构,系统内的主要部件,系统软件设计,实际应用效果与技术改进措施.
UPS电源对于控制系统可靠运行至关重要.针对电池劣化,蓄电池组过充、过放等问题,分析比较了交流注入测内阻法、交流放电测电导法和直流内阻放电法三种电池内阻测量方法,介绍了 UPS电源日常维护过程中内阻测试和放电测试注意事项,运用工况在线监测的方式,实时监测UPS运行状态,延长UPS电源的使用寿命.
Through reasonable management of instrument and control equipment in petrochemi-cal enterprises,the automation degree and reliability of equipment is improved,the require-ments of equipment use is met,and the production efficiency of petrochemical enterprises is im-proved.Based on the status of automatic instruments and common problems of instrument con-trol equipment,the type selection principles and key points of attention during the preliminary of the project are discussed,with combination of the data analysis conclusions accumulated in practical work and the work experience,the key points of attention and experience in type se-lection of instrument are introduced.It provides reference for the design review and type selec-tion of instrument control professional instrument in the petrochemical industry.The mainte-nance efficiency and effects are improved.The long-term stable operation of the installation is promoted.
To solve the problems of difficult management and high management cost of remote well,and to improve the production and management efficiency,the principles of data acquisi-tion,data transmission,remote control and intelligent auxiliary technology in the wellhead in-telligent control system in the remote well are expounded in detail.It is applied in the remote well in the deep shale gas-field.The functions of real-time monitoring,alarming propelling and remote control are realized.It provides powerful support for unmanned remote well.The con-ventional manned management mode is completely broken.The new intelligent control manage-ment mode has broad popularization and application prospect.
某石化公司空气压缩机控制系统已运行十多年硬件老化.存在安全风险,通过分析空气压缩机运行状况和控制系统的组成及运行方式,采用三重冗余控制系统对现有Cooper压缩机QUAD2000系统进行改造,通过优化原压缩机控制方式和逻辑程序,并改造现场部分硬件,实现空气压缩机远程控制及现场紧急启停,同时,减少了操作人员的巡检频率,保障机组安稳运行,满足石油化工企业产集中管控模式的需要.
With the continuous increase of natural gas supply and the construction quantity of gathering and transportation network in Puguang gasfield,the long-term safe operation of gas transportation pipeline is becoming the primary issue.To further enhance the safety of monito-ring and protection system of Puguang gas field,the commonly used pipeline leakage detection methods and different optical fiber leakage monitoring methods are analyzed and compared.A distributed sound monitoring DAS system suitable for Puguang gas field is presented.Secondly,the optical fiber leakage monitoring scheme of Puguang gas field is arranged.5 sets of distribu-ted optical fiber acoustic wave monitoring systems are going to be adopted to carry out real-time online monitoring for typical events,such as leakage,manual excavation and mechanical operation.Finally,the main functions and indexes of the optical fiber acoustic wave monitoring system realization are given.The implementation of the scheme can realize the safe protection and pre-alarm of the protected area.The monitoring and pre-alarming capacity of the gathering and transportation system of Puguang gas-oil field will be improved effectively.
Based on the traditional analog signal metering management system is widely used,strong interference can cause the signal transmission abnormality during signal transmis-sion.Comparison and analysis are conducted for metering management systems based on tradi-tional analog signal and fieldbus respectively.The uncertainty calculation and comparison ex-periment are carried out.The comprehensive comparison indicates the fieldbus digital metering system is stable and reliable.It provides reference for the selection of metering management system.
Temperature is the core parameter for analyzing oil well production performance,evaluating injection steam indicators,and identifying inter well steam channeling interference in heavy oil stimulation development,which directly affects the development.The temperature data acquisition of early developed heavy oil block well pads mainly adopt manual recording,which has many shortcomings,such as large data collection workload,low accuracy,poor time-liness,and difficulty in timely detection of production abnormalities.In response to the problem that the traditional"RTU+instrument"single well automation construction mode cannot be widely promoted in heavy oil stimulation development blocks,a temperature measurement sys-tem design scheme that combines a non-intrusive temperature transmitter with remote auto-matic well selection measurement control to achieve automatic temperature collection and up-loading is proposed,to achieve abnormal modeling and analysis of heavy oil stimulation wells,and to effectively improve data collection frequency,to improve data quality,and to expand application scenarios,to develop a low-cost,easy to implement and high-performance tempera-ture monitoring construction model for heavy oil stimulation wells.
The classification and working principle of key analytical instruments in water treat-ment system of high sulfur content gas field are expounded.The influencing factors of instru-ment accuracy,and the application situation of different types of automatic analysis instruments in all links of water treatment are investigated.Combining the specific working conditions of water treatment in Yuanba gas field,reasonable optimization suggestions are put forward with focusing on the actual application of water quality analysis instruments such as pH value analy-zer,residual chlorine analyzer,COD analyzer,ORP detector,etc.
Combining the calibration technology requirements for oil-dispensing equipment,the technology of liquid level gauge on the upper part of a 2×103 L vehicle mounted liquid level compensated standard metal tank is studied.The installation location of the liquid level gauge and the technology parameters for liquid level gauge selection are determined.The blocking and deflating structure at the lower entrance is designed,and numerical simulation research is con-ducted,to ensure that the oil level rise does not impact on the liquid level gauge during unloa-ding,and to ensure high-precision,long-term,and high-frequency operation of the added liquid level gauge.
阐述了天然气流量计量仪表的选型要素和选型原则,着重介绍了孔板流量计、腰轮流量计和旋进旋涡流量计等气田常用计量仪表的使用特点、发展过程以及适用场合,并探索了在天然气含液和含固体杂质等复杂工况条件下,提升仪表测量的可靠性与准确性方面的改进措施,希望促进气田天然气计量技术的长足进步.
The hydrogen pressurization of the continuous reforming device is realized by the in-stallation mode of two boosters in series,and due to the defect of the control scheme during op-eration,automatic control cannot be realized,and the system has uneven coupling of load distri-bution,resulting in a booster current overload shutdown.The defects of the control scheme are analyzed,the design idea of the decoupling control scheme is proposed,and the three-range con-trol is adopted to achieve load balancing and achieve the purpose of decoupling.After the imple-mentation of the optimal control of the unit,automatic control can be realized,and the unit runs smoothly.
雷达液位计因可测量腐蚀性强、易燃易爆、黏度高的介质,在石油、化工装置中被广泛应用.介绍了雷达液位计测量原理,并结合实际生产过程中,针对该类液位计出现信号频繁漂移、假死、报警等现象问题进行了分析,并提出建议及措施,为该类液位计安装提供了很好的参考意义.
There are various safety risks associated with the extraction in high-sulfur content gas fields,such as natural disasters,corrosion,equipment failures and third-party damages.To effectively mitigate these risks,based on years of practical experience and exploration,a"three-in-one"intelligent control technology system is developed for the high-sulfur content oil-gas field gathering and transporting pipeline,comprising underground control,surface control,and aerial control.Comprehensive anti-corrosion techniques and corrosion monitoring technologies are proposed to address corrosion issues.A distributed fiber optic safety pre-warning system is constructed to detect leaking.A geological hazard assessment and monitoring system are estab-lished to tackle geological hazards.Furthermore,unmanned aerial vehicle(UAV)technology is utilized for emergency response and inspection purposes.Through the implementation of these technologies,realtime control and early warning of leaking and unforeseen events can be achieved.The safety and stable operation capability of the pipelines are enhanced.
Because of the natural gas purification equipment of high-sulfur contained gas fields operating under high load for a long period of time,the equipment is aging gradually,the pipe-lines are being corroded.Traditional fixed hydrogen sulfide alarms cannot monitor new leaking point timely.The novel wireless monitoring technology is being widely used in high sulfur con-tained gas fields for its high efficiency of installation speed and low installation cost.A wireless hydrogen sulfide monitoring system based on wireless hydrogen sulfide alarms,wireless gate-ways,smart antennas,and GDS,is established in a natural gas purification plant.Real-time mo-nitoring of hydrogen sulfide leakage in high-risk areas is achieved.Long-term safe and stable production of the purification plant is guaranteed efficiently.
During the development of high-sulfur contained gas fields,such as Puguang gas field,Yuanba gas field and Luojiazhai gas field,damage to instrument caused by thunderstorms occurs frequently,which has made lightning protection more and more important.The lightning protection issues in high-sulfur contained gas fields are introduced in detail from the aspects of lightning introduction sources,analysis of existing problems in lightning protection systems,re-search on lightning protection countermeasures,detection content and indicators of lightning protection systems,and so on.Feasible preventive measures are formulated.It provides techni-cal support for safe and stable operation of high sulfur contained gas fields.
