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东海陆架盆地面积28.4万平方公里,新生界最厚达1万米.不少地质家预测这里存在丰富的石油资源.从1972年到1981年已钻井50余口,除在台湾海峡有一小型气田投入开发和在西湖凹陷发现平湖油气田外,虽多处见天然气流和油气显示,尚无具经济价值的发现.该区的找油气前景究竟如何.实为人们所关注.位于南海西南部的暹罗湾—马来盆地,面积30万平方公里,渐新统以上最厚达1万米,主要为陆相碎屑含煤沉积并夹海相层.自北而南海相沉积增加,南部以海相为主.从1969年到1981年,共钻井220余口.已证实气田6个,储量3100亿方,油田5个储量约10亿桶.估计天然气储量在7500亿方以上.有价值的油、气田均分布在主要深凹陷内.其中气田主要分布在以陆相沉积为主的盆地北部;油田多具较大的气顶且都分布在海相沉积较发育的盆地南部.盆地内其它小的、浅的凹陷只见显示而无油气田发现.暹罗湾的勘探成功,表明由断陷开始形成的以陆相沉积为主的第三纪滨海含煤盆地,具有良好的天然气勘探前景,并在其向海的一方,还有较多发现油气田的可能.
The East China Sea shelf basin area of 28.4 square kilometers, the Cenozoic thickest 10000 meters.Many geological experts predict there is abundant oil resources.From 1972 to 1981 has been drilling more than 50 ports, in addition to a small gas field in the Taiwan Strait investment Development and discovery in the West Lake Sag Pinghu oil and gas field, although many see the natural gas flow and oil and gas show that there is no economic value of the discovery of the area to find what the future of oil and gas is indeed a matter of concern .In the Southwestern South China Sea, Siam Bay - Malay Basin, an area of 300,000 square kilometers, the Oligocene over the thickest 10,000 meters, mainly continental sedimentary coal-bearing sedimentary and marine layers from the north and south marine sediments increased, the southern sea With a total of more than 220 wells drilled from 1969 to 1981. Six gas fields have been proven with a reserve of 310 billion cubic meters and five oil reserves of about 1 billion barrels with an estimated natural gas reserves of over 750 billion cubic meters.The valuable oil, The gas fields are all distributed in the major deep depressions, of which the gas fields are mainly distributed in the northern part of the basin mainly dominated by continental facies.The oilfields mostly have large gas heads and are distributed in the southern part of the basin where the marine deposits are well developed.The other small Shallow depressions only show without oil and gas fields The successful exploration in the Gulf of Siam shows that the terrigenous sedimentary-dominated Tertiary coastal coal-bearing basins, which originated from faulted depression, have good prospect of natural gas exploration and more on the sea side Discovery of oil and gas fields possible.