Since the beginning of this year, Daqing Petrochemical Company has been adjusting the material flow in the oil refining area based on the principle of "oil when appropriate, olefin when appropriate, and aromatics when appropriate", optimizing the production of self-produced heavy ethylene feedstock, and achieving efficient operation of the oil refining area facilities. From January to July, the overall ethylene yield increased by 0.12% year-on-year, and the overall yield of ethylene and propylene increased by 0.13% year-on-year, demonstrating significant efficiency gains from the integrated layout of refining and chemical production. Systematically optimizing the structure and enhancing raw material quality. Faced with the dual challenges of blending finished oil and supp

The sealing surface of a valve is its core component. The leakage forms of the sealing surface can generally be classified into several types, namely, leakage from the sealing surface, leakage from the connection between the sealing ring and the valve body, leakage caused by the detachment of the closing member, and leakage due to foreign substances embedded between the sealing surfaces. One of the most common uses of valves in pipelines and equipment is to cut off the flow of media. Therefore, the sealing performance of the valve is the main factor determining whether internal leakage occurs or not. The sealing surface of a valve is usually composed of a pair of sealing pairs, one on the valve body and the other on the valve disc. The reasons for leakage from the sealing

Valves are usually connected to pipes in various ways such as threaded, flanged, welded, clamped, and ferrule wafer. So, how should one choose when using and selecting them? What are the connection methods between valves and pipes? 1. Threaded connection: Threaded connection is a form where the ends of the valve are processed into internal or external threads to connect with the pipe. Usually, ball valves under 4 inches and stop valves, gate valves, and check valves under 2 inches often use threaded connections. Threaded connections have a relatively simple structure, are lightweight, and are convenient for installation, disassembly, maintenance, and replacement. However, due to the influence of environmental and medium temperatures during use, the valve may expand. To

On August 5th, with the successful completion of a horizontal well at the Guping 41-52 well site, the number of wells in the Changqing Heshui Oilfield's tight oil block-level horizontal well three-dimensional development area exceeded 650, making it the largest such development area in China. Since its development, the area has produced over 5 million tons of oil, with a cumulative oil production 6.5 times that of the directional well development area. The production uptime of oil wells has increased by 17% year-on-year, marking a new development path for the efficient development of tight oil. The Changqing Heshui Oilfield in Longdong, Gansu Province, is a typical tight oil reservoir with rich resources. However, its poor reservoir properties and weak seepage capacity ha

Proper selection and installation of steam traps can prevent freezing as long as there is steam passing through. However, if the steam supply is interrupted, the condensate in the heat exchanger or tracing pipe will create a vacuum, which will prevent the condensate from freely draining from the system before freezing occurs. Therefore, a vacuum breaker should be installed between the equipment to be drained and the steam trap. If the condensate is not drained by gravity from the steam trap to the return pipe, the steam trap and the drainage pipe should be manually drained or automatically drained using a return pipe with anti-freezing measures. Additionally, when multiple steam traps are installed in a steam trap station, insulating the steam traps can prevent freezing. Anti-fr

As of now, the Tuha Oilfield has completed 46 various plans for capacity construction and other aspects this year, with the design compliance rate reaching 100% and the effectiveness rate of measures reaching 98%. This has effectively saved drilling and fracturing costs, and the supporting and guaranteeing role of engineering technology has become more prominent. As the oilfield shifts to increasing reserves and production in ultra-deep and unconventional areas, the geological conditions have become more complex, posing higher requirements for engineering technical services. Since the beginning of this year, the engineering technical service units of the Tuha Oilfield have focused on key projects, accelerated technological innovation, and improved service quality. Engine

I. Testing and Adjustment of Pneumatic Butterfly Valves 1. Before leaving the factory, all components of butterfly valves, whether manual, pneumatic, hydraulic or electric, have been strictly debugged. When users recheck the sealing performance, they should evenly fix both the inlet and outlet sides, close the butterfly valve, apply pressure to the inlet side, and observe whether there is any leakage at the outlet side. Before conducting the strength test on the pipeline, the disc should be opened to prevent damage to the sealing pair. 2. Although pneumatic butterfly valves have been strictly inspected and tested before leaving the factory, there may still be individual products with automatic screw displacement during transportation, which requires re-adjustment, pneumatic, hy

On July 7th, the author learned that in the first half of this year, the commercial volume of coalbed methane in Huabei Oilfield increased by 45 million cubic meters compared with the same period last year. Huabei Oilfield has been committed to treating the coalbed methane business as an important growth pole for building a comprehensive energy company with a production capacity of 10 million tons of oil equivalent. Since the beginning of this year, Huabei Oilfield has followed the strategy of "developing Qingshui and expanding the periphery", empowered by both self-operation and cooperation, and focused on efficient production increase of coalbed methane, accelerating the construction of a green and intelligent industrial base with "one main and three auxiliary" function

On May 21st, in the centralized control room of the refining area of Lanzhou Petrochemical, the internal line operators of the 5 million tons/year atmospheric and vacuum distillation unit were carefully comparing the quality inspection and analysis results. By swiping the mouse at the control points on the screen, they adjusted the external release volume of the atmospheric line again, precisely keeping the freezing point of the jet fuel above the quality index to ensure the maximization of the jet fuel yield. Since the beginning of this year, Lanzhou Petrochemical has been market-oriented, fully implementing the policy of "reducing fuel consumption and increasing navigation", achieving efficient coordination among production, sales and transportation, optimizing the stru

If you do not carefully check the usage condition and performance specifications of the wafer-type electric butterfly valve before installation, the wafer-type electric butterfly valve may have the following common faults: the valve cannot be reversed or the reversing action is slow, gas leakage, and the electromagnetic pilot valve is faulty, etc. (1) The inability or slow reversing action of the wafer-type electric butterfly valve is generally caused by poor lubrication, the spring being stuck or damaged, oil stains or impurities getting stuck in the sliding part, etc. In this regard, it is necessary to first check whether the oil mist lubricator is working properly. Whether the viscosity of the lubricating oil is appropriate. When necessary, the lubricating oil shoul

Since the air is compressible, the stability of the pneumatic transmission system is poor, which has a great impact on the accuracy of position control and speed control. Therefore, the positioning signal of the pneumatic actuator usually produces an execution error with a resolution of about 3~5%. This leads to inaccurate valve positioning correction, the valve should be closed but not closed, and at the same time, it cannot be positioned due to the execution error caused by the resolution, so that the position feedback of the positioner continuously corrects the position, and the entire control loop swings and oscillates or loses control. In addition, because the working medium air itself has no lubricity, an oil lubricating device must be installed in the air circuit. Compared

In industries that require temperature, high and low temperature cycle temperature control system equipment has been widely used, which can realize two functions of heating and cooling. During cooling and heating, the temperature change in the thermostat can be realized by the circulation of the fluid medium (refrigerant), so as to achieve the temperature required by the process. 1. What is the function of the valve of the high and low temperature cycle temperature control system? 1.1. The valve is used to control the flow and direction of the refrigerant. Valves are required for closing and starting. Valves should be installed where they can be easily removed and serviced. Set up various valves, pay attention to the direction of refrigerant flow, a

It is reported that recently, it was learned from Changsha gas transmission branch of west east gas transmission of national pipe network that the company successfully completed the task of ensuring the supply of natural gas in Hunan Province in winter, and transported 1.625 billion cubic meters of natural gas to Hunan Province, a year-on- year increase of 9.26%. Changsha gas transmission branch of West to east gas transmission of national pipeline network has transported 1.625 billion cubic meters of natural gas to Hunan Province, a year-on-year increase of 9.26%. Changsha gas transmission branch takes safety production as the foundation, emergency response as the starting point and market development as the driving force to build a solid gas barrier for the rapid

It is reported that recently, the first batch of 12 affordable wind power and photovoltaic project connection projects of Inner Mongolia Power Group have been approved, involving 12 photovoltaic wind power projects of more than 10 new energy investment enterprises such as Guodian, Huadian, China Resources and Mingyang, with a total installed capacity of 2.3 million KW, distributed in Ulanqab, Erdos, Bayannur, Wuhai, Alxa and other regions. According to the objectives of "two pioneers" and "two surpasses" clearly put forward in the report of the 11th Party Congress of Inner Mongolia Autonomous Region, Inner Mongolia electric power group gave full play to the advantages of power grid resource allocation, went all out and made active deployment, formulated a new energy grid

The port is the window of foreign trade, and oil and gas trading is one of its most important businesses. The report of the 19th National Congress of the Communist Party of China proposed to "give greater reform autonomy to the free trade pilot zone and explore the construction of free trade ports", and domestic ports, large and small, responded one after another. Zhoushan Port, Tianjin Port and Huizhou Port, as coastal oil ports in the Yangtze River Delta Economic Circle, the Bohai Economic Circle and the Pearl River Delta Economic Circle, play the leading role of the Shanghai Futures Exchange in the oil and gas trade and financial market, and lead the surrounding ports to continuously explore suitable ports for themselves. The oil and gas development path has made the domestic port oi