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粤东地区中生代属于特提斯海的一个分支,发育了晚三叠世-早侏罗世浅海-半深海相沉积。这里艮口群小水组,蓝塘群银瓶山组、上龙水组、吉水门组为半深海相黑色泥岩,厚度巨大,达到4000m以上,为良好烃源岩。燕山运动的逐渐增强,中侏罗世以湖相沉积为主,塘厦组为深湖相沉积的厚层泥岩,也是较好的烃源岩,但分布较局限。白垩纪,在粤东沿莲花山及河源深断裂发育一系列呈串珠状分布的湖盆,以河流和湖泊相沉积为主,夹火山碎屑沉积岩。粤东地区中生界发育有三套储集层,分别是长埔组、青坑村组和合水组,但保存条件差。笔者认为同属于特提斯海南海北部中生界具有良好的生油气资源潜力。
The Mesozoic Eocene in eastern Guangdong belongs to a branch of the Tethys Sea and developed Late Triassic to Early Jurassic shallow sea-semi-deep marine sediments. Here Genkexiao Shui group, Lintang group Yinshan Group, Shanglongshui Formation and Jishuimen Formation are semi-deep marine black mudstones with a thickness of 4000m, which is a good source rock. Yanshanian movement gradually strengthened. Middle Jurassic lacustrine sediments dominated. Tangxia Formation is a thick mudstone deposited in deep lacustrine facies. It is also a good source rock with relatively limited distribution. Cretaceous, in the eastern Guangdong along the Lianhuashan and Heyuan deep fault developed a series of bead-shaped distribution of lakes, river and lacustrine facies sedimentary, volcanic clastic sedimentary rocks. There are three sets of reservoirs in the Mesozoic in eastern Guangdong, namely Changpu Formation, Qingkengcun Formation and Heishui Formation, but poor preservation conditions. The author believes that both belong to the Tethys in the northern part of Hainanhai Mesozoic with good potential for hydrocarbon generation.