【摘要】 全球海洋油气资源丰富,海洋石油资源量占全球石油资源总量的34%,探明率在30%左右,尚处于勘探早期阶段。由于海洋特殊的环境,海上油气勘探的投资大幅增加,一般是陆地油气勘探投资的3～5倍。海洋油气勘探以海上拖缆地震勘探为主要手段。海上勘探阶段划分为初步勘探阶段和进一步勘探阶段。初步勘探阶段包括盆地评价、区块与圈闭评价、发现油气藏;进一步勘探阶段则以钻探井和评价井为主,以扩大含油气面积,增加和探明油气地质储量。墨西哥湾、西非及巴西等海域将继续引领全球海洋油气勘探潮流,发达国家的油气勘探技术日渐成熟。更多还原

【Abstract】 Marine oil and gas resources are abundant and take up about 34% of the whole world.They are still in the early states of exploration with proven rate being 30%.Because of special marine environment,the investment on marine oil and gas exploration increases dramatically,generally three to five times higher than that on land-based exploration.Marine oil and gas exploration takes the marine towing seismic exploration as a primary means. The marine exploration phase is classified into the preliminary exploration phase and the further exploration phase.The former one consists of the basin evaluation,the block evaluation,and the trap evaluation.The latter one lays emphasis on drilling wells and appraisal wells,with an aim to expand the petroleum area and increase proven oil and gas geological reserves.The Gulf of Mexico,West Africa,and Brazil will continue to lead the trend of the global marine oil and gas exploration.Exploration techniques are becoming more and more mature in developed countries.更多还原