"The change of crude oil inventory refers to the change of crude oil inventory in a certain period of time. Crude oil is one of the most important energy resources in the world, and its price and supply are directly related to the development of the global economy and the trend of the energy market. Therefore, crude oil Changes in inventories are one of the key indicators closely watched by economists, investors and energy industry experts.

Calculations of changes in crude oil inventories are typically based on physical measurements or other methods of facilities where crude oil is stored, such as tanks, pipelines and ships. These storage facilities are usually controlled and managed by oil companies, refineries, government storage and logistics companies, etc. Changes in crude oil inventories involve a variety of factors, such as supply and demand, seasonal demand changes, political and geoeconomic risks, and more.

Changes in crude oil inventories have a direct impact on crude oil prices and energy market trends. When crude oil inventories rise, indicating increased supply, prices may fall. Conversely, when crude oil inventories fall, indicating reduced supply, prices may rise. In addition, when the global economy grows, crude oil inventories may increase because demand rises; when the economy goes down, demand falls, and inventories may fall.

Changes in crude oil inventories are one of the important bases for investors and economic analysts to predict crude oil prices and market trends. In addition, government departments, oil companies and energy industry experts will also pay close attention to changes in crude oil inventories to formulate relevant policies and business strategies.

In a word, the change of crude oil inventory is one of the important indicators reflecting the supply and demand of crude oil and the state of the global economy. Through the monitoring and analysis of crude oil inventory changes, we can understand the trend of the global crude oil market and formulate corresponding business and investment strategies, which are of great significance to investors, oil companies, government departments and energy industry experts. "