Abstract: Based on one by one anatomical and statistical analysis of 1021 giant oil and gas fields all over the world, this paper analyzes their discovery age, oil and gas properties and geographical location, reservoir geological age, lithology, depth, trap type, scale of reserves, and basin type, sums up their major distribution characteristics, puts forward the concept of petroleum domain, and expounds their distribution in eight petroleum domains all over the world. The study shows that there are 609 giant oilfields all over the world and they concentrate in the Middle East. There are 412 giant gas fields and they concentrate in Eastern Europe, Middle Asia and Russia. Giant oil and gas fields are mostly distributed in Asia, Oceania and Middle East, followed by Europe. The discovery of global giant oil and gas fields peaked from 1960 to 1990, and there are also many giant ones found in following two decades. They mainly occurred in Mesozoic strata, and next is Cenozoic. Oil and gas are rich in sandstone and secondly in carbonate, but the reserves are higher in carbonate reservoirs. Giant oil and gas fields mainly concentrate at a depth within three kilometers, and the trap type is mainly structural. From the analysis of ultimate recoverable reserves, it is concluded that oil and gas resources are rich in the Middle East, and there are huge reserves of oil and gas found in Venezuela’s Orinoco Belt. The main types of basins in which giant oil and gas fields lie are Class Ⅱ and Ⅰbasins in accordance with the Bally Basin classification mode, ClassⅡ basins in accordance with the Klemme Basin classification mode, and ClassⅡ and Ⅰ basins in accordance with theMann Basin classification mode. Tethyan petroliferous domain has the richest oil and gas. According to the distribution of giant oil and gas fields, emphasis should be laid on the exploration in Arctic petroliferous domains, heavy oil belt, deep water area, and lithologic traps in the future, and there would be a great breakthrough.

Key words: giant oil and gas field, distribution, petroliferous domain, structural domain, global