关键词: 全球油气, 勘探特征, 探明储量, 上游投资

Abstract: Oil and gas exploration is the basis for sustainable oil and gas industrial development. Global exploration reserves growth was closely related to the oil and gas upstream industrial development trend, international oil prices and exploration investment. A total of 5737 new oil and gas fields were cumulatively discovered all over the world between 2008 and 2018, while the newly-additional proven oil and gas reserves were accumulated to about 31.9 billion tons of oil equivalent. As for the oil and gas types, the proportion of newly added oil reserves was nearly equal to that of natural gas. The newly additional crude oil proven reserves occupied 51 percent of the total while the natural gas reserves accounted for the remaining 49 percent. As for the onshore and offshore categories, the offshore area became the key region for reserves growth. The newly-added offshore oil and gas proven reserves occupied 68 percent of the total while the onshore reserves accounted for the remaining 32 percent. As for the buried depth of reserves, the deep to ultra-deep reservoirs became the main exploration targets. The proven reserves from the deep oil and gas reservoirs (4000-6000m) occupied 54 percent of the total newly additional crude oil reserves while the natural gas reserves accounted for 40 percent. The proven reserves from the ultra-deep reservoirs (>6000m) occupied 13 percent of the total newly additional crude oil reserves while the natural gas reserves accounted for 21 percent. As for exploration operating companies, international oil companies and national oil companies have concentrated their investment on tar oil and gas fields development since the decline of oil prices. Independent oil companies and other companies have become the mainstay for exploration. It is worth studying and paying attention to the business model of the “dual exploration pattern which international oil companies have practised in the risk exploration area.