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As we all know, inventory, as a trade and commodity flow, has always been the focus of attention if the previous test bench has reached the standard position. There is a close relationship between the inventory and the price of the commodity, such as when judging the sensor signal. Of course, oil with both commodity and financial attributes is no exception. Although there are many factors that affect the change of oil price, there is no doubt that inventory change is a very important factor. The change of its inventory quantity is directly related to the change of the balance of supply and demand in the world oil market. It can play a role in regulating the balance of supply and demand in the market. That is, throwing out inventory can increase the oil supply, and replenishing inventory will increase the demand. Inventory change (increase/decrease and flow direction) is mainly restricted and regulated by the balance between supply and demand, price increase and discount, inventory target volume, operating conditions, etc. it is a concept of stock, which is closely related to the trend of oil prices. Inventory has the function of increasing specific oil to stabilize the oil price

concept and classification

oil inventory includes crude oil inventory and oil inventory. It is not only a supply system, but also a buffer that plays a key role in making up for insufficient supply. As far as crude oil is concerned, inventory can be divided into many types according to its subject, type, location, purpose and reasons for establishment. According to their purposes, crude oil inventory consists of some primary inventory and secondary and tertiary inventory used for refining refined oil. In statistics, crude oil inventory is often divided into commercial inventory (i.e. industrial inventory) and strategic reserve inventory according to the subject and purpose. In addition, from the perspective of economics and engineering technology, inventory can be divided into non arbitrary inventory and arbitrary inventory according to the purpose of its establishment

non discretionary inventory is the inventory to maintain the normal operation of the world oil supply system, which is mainly composed of minimum operating inventory, offshore inventory, strategic reserve inventory and safety obligation inventory. In order to support a growing oil supply system and its security, non discretionary inventories usually rise with the increase of global crude oil demand. Ordinary commercial trade factors have little impact on non discretionary inventory, so theoretically, it is not very close to the price of crude oil

random inventory is to promote the military and civilian resources in the field of new materials to share the available commercial inventory, which is the part higher than the safety obligation inventory and the basis for ensuring the smooth progress of trade. The driving force behind it is commercial profit, which is closely related to the trend of crude oil price. Although the policy of oil companies in recent years is to use as low as possible any inventory, in fact, any inventory is rarely lower than its 10 day consumption

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