The Oil & Gas industry is a core industry ensuring national energy security. Its core value lies in ensuring the safety, efficiency and compliance of production and operation through accurate measurement of flow parameters of various media in the entire process of oil and gas exploration and development, refining and processing, storage and transportation sales, while providing reliable data basis for energy reserve accounting, production cost control and trade settlement. In terms of medium characteristics, the covered medium types are complex and diverse, mainly including crude oil (high viscosity, sand/wax-containing, easy to solidify), natural gas (flammable and explosive, low viscosity, high pressure), refined oil (gasoline, diesel, kerosene, etc., low to medium viscosity), liquefied natural gas (LNG, low temperature, high pressure), refining intermediates (such as naphtha, heavy oil, high viscosity, high temperature), etc. Such media generally have flammable and explosive, high temperature and high pressure characteristics, and some contain corrosiveness or impurities, putting forward extremely high requirements for the explosion-proof performance, high temperature and high pressure resistance, wear resistance and measurement accuracy of flow measurement equipment.
The relevant factory types or unit types covered by this industry focus on the entire oil and gas industrial chain, mainly including oil and gas field extraction plants, refineries, natural gas processing plants, oil and gas transmission pipeline companies, LNG receiving terminals and refined oil sales terminals. Different types of factories and units have significantly differentiated demands for flow measurement equipment due to differences in production processes (such as extraction, refining, storage and transportation) and medium forms (liquid, gaseous, low-temperature liquid). In terms of commonly used flow equipment, the mainstream equipment includes Coriolis mass flowmeters (suitable for crude oil, refined oil, refining intermediates and other media, which can accurately measure mass flow without being affected by medium viscosity and density fluctuations, and adapt to high-pressure scenarios), vortex flowmeters (suitable for gaseous media such as natural gas and steam, with high measurement accuracy and excellent explosion-proof performance), orifice flowmeters (suitable for liquid media such as crude oil and refined oil, with simple structure and high cost performance, suitable for trade settlement scenarios), turbine flowmeters (suitable for low-viscosity liquid media such as refined oil and light hydrocarbons, with fast response speed and stable measurement), etc.; supporting valves include high-pressure gate valves, ball valves, globe valves, throttle valves, etc. Both these valves and flowmeters need to