The hottest wireless monitoring instrument has mor

2022-10-19
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Wireless monitoring instruments are more flexible in field applications

for all new projects, regardless of the size, the use of intelligent wireless technology can significantly save installation costs. If wireless accounts for 45% of the project points, its costs in engineering, infrastructure and driving will be saved by more than 35% compared with wired solutions

in the past two years, innovators in the oil and gas industry have experienced and confirmed the application value of wireless monitoring instruments in remote or hard to reach areas. If wired devices are used in these applications, the high construction cost will be unbearable. No matter in terms of operation performance or cost, the wireless scheme has great advantages, and is safe and reliable. It can be widely used in the upstream operation of the traditional wired scheme

traditional wiring will still be used for continuous control, such as offshore platforms and refineries, as well as safety systems. However, wireless technology has been widely used in existing plant devices, and has also been used in new projects

compared with wired technology, advanced wireless technology has low investment cost and less floor space. It is an ideal choice for platform applications. Compared with traditional Ma wired analog meters, installing wireless devices at each node can save 30% of the cost. Wireless technology has become a mainstream application in North America

anyone familiar with industrial automation knows that since the mid-1990s, people have been looking for a technology that can replace the mA analog standard. Later, ISA developed Foundation Fieldbus and other technologies, which have been widely used in various industrial industries

the latest research shows that if the required cable laying is no more than 250 meters and the number of connection points is less than 500, the installation cost of wireless instruments is lower than that of Foundation Fieldbus scheme. If it is higher than this index, the fieldbus scheme will save more money than the wireless scheme. This shows that offshore applications can integrate these technologies until the stress reaches the maximum value, and adopt the traditional milliampere in the safety system; Field bus is used for control; Monitoring and low frequency control applications use wireless technology. The advantages of wireless also include: simplifying the engineering and implementation work, starting faster and more flexible, even changing the design later is no problem, because its installation is very simple

safety is also a factor to be considered. Process and operation information can be transmitted wirelessly as needed, and staff do not need to read data manually in places with high pressure and high temperature

Emerson intelligent wireless solution adopts self-organizing network technology, which makes up for the defects of the old-fashioned system that requires visual path. For example, wireless instruments can be arbitrarily distributed in onshore oil fields, while using traditional wired instruments for data acquisition is difficult to implement and lacks flexibility. The self-organizing network continuously monitors the data transmission of pressure, temperature, flow and vibration measurement equipment, and automatically looks for the best communication path that covers all fields of graphene research and utilization. If a temporary obstacle blocks the communication path, the adjacent wireless instruments can continue to transmit signals as routers. By keeping the signal connected in this way, the reliability of data transmission can reach more than 99%

this technology is the foundation of the WirelessHART standard, which has been recognized by more than 200 members of the HART communication foundation representing instrument manufacturers and users. At present, a considerable number of field instruments, valve and equipment positioning monitors, vibration data transmitters and intelligent wireless switches can meet this standard and have been applied in the petroleum industry

successful project

secondly,

bpwytch oil in the UK, if you have friends who are engaged in relevant industries, please inform Tian that he has started to apply intelligent wireless network very early, which is one of the largest offshore oil fields in Europe. In order to improve the efficiency of staff and eliminate the work of manual inspection and reading of wellhead instruments every day, BP has installed 40 Rosemount wireless pressure transmitters, 2 for each wellhead. The intelligent wireless switch is separately installed outside the process area to transmit the signal of the wireless transmitter to the control system. It only takes 30 minutes to add any new wireless instrument, which can continuously monitor the oil well and find abnormal pressure

Chrisgeen, manager of BP, said, "wytch oilfield is an important pilot project for BP to prove the applicability of self-organizing wireless network. With the successful application of this project, BP is also preparing to apply intelligent wireless solutions to similar offshore platforms."

statoilhydro also uses an intelligent wireless network on its Gran oil platform to remotely monitor wellheads and heat exchangers located in remote areas on the north coast. Some obstacles will block the visual communication path, but this is not a problem for self-organizing wireless networks

in this case, 22 wireless pressure transmitters are installed at the wellhead to measure the annulus pressure, and the other 12 meters monitor the inlet pressure and the pressure drop of the heat exchanger. Each transmitter transmits data to the control room operation station through wireless switch

during the use of wireless instruments, the signal strength and consistency are excellent, and the data reliability and stability reach 100%, greatly reducing the workload of manual reading of instrument data. At the same time, it also reduces the opportunities for staff to be exposed to dangerous places. Geirleonvadheim, director of oil platform instrumentation, said, "we are quite satisfied with the performance of intelligent wireless networks. After a short training, our instrumentation engineers can easily install new wireless devices anywhere as needed."

Venezuelan national oil company invested millions of dollars to transform the automation device of Morichal factory, including installing wireless networks to monitor 180 oil wells. The wireless self-organizing network uses more than 600 wireless transmitters. The wireless scheme not only saves costs, but also provides reliable pressure and temperature measurement data. If the wired scheme is adopted, there will be grounding problems, and the electronic drive equipment installed at the wellhead will produce harmonics, which will affect the accuracy of wired instruments

research on wireless solutions in new projects

some recent studies show that whether in small or large new projects, when intelligent wireless technology accounts for 25% to 45% of the i/o of the whole project, the advantage is the most significant. In addition, wireless technology can improve the flexibility of project design, and because its implementation and installation are very simple, it can also shorten the construction period. The research results show that the best implementation scheme of the new project is to adopt the combination of wired Hart, fieldbus and wireless communication

wireless scheme is used for new offshore manual operation platform. According to a survey conducted by Emerson on a 4000i/o offshore platform, wireless technology can be widely used in process applications, not limited to those places where wired solutions cannot be adopted or the cost of implementing wired solutions is too high

in terms of project installation cost, comparing various combination schemes of wired Hart, fieldbus and wireless devices, we find that compared with other communication technologies, wireless schemes have the highest cost efficiency. In the research of the above oil platform, about 17% of the signals are effectively transmitted through wireless devices. Installing wireless networks in the process control system saves 7% (US $1million) of installation costs. In addition, 800 wired contacts are reduced, so the weight of 35 tons is reduced. Due to the reduction of cables, trunking, junction boxes and cabinets, the space occupied on the deck is reduced by 129 cubic meters

according to the wiring length of the conventional wired scheme, we find that no matter what the distance, the wireless instrument can save money, and the longer the distance, the more savings. Based on this, the research team produced a cost calculator to measure the cost savings of the project achieved by using the wireless scheme

wireless technology is used to build new process plants. An independent consulting company conducted an investigation on the chemical process plant and reached a unanimous conclusion: for all new projects, regardless of the size, the use of intelligent wireless technology can significantly save installation costs. If wireless accounts for 45% of the project points, its cost on engineering, infrastructure and driving will be more than 35% less than that of wired solutions. (end)

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