以海陆对比优选南黄海海相中-古生界油气勘探目标区

DISCUSSION ON EXPLORATION TARGETS OF MARINE MESOZOIC AND PALEOZOIC HYDROCARBON IN THE SOUTH YELLOW SEA

为优选南黄海盆地海相中—古生界油气勘探目标区,开展了上下扬子区陆域地质考察,对比分析了苏北—南黄海及上扬子四川叠合盆地海相中—古生界油气勘探现状、区域构造特征和烃源岩条件等。认为受区域构造演化差异的影响,南黄海崂山隆起海相中—古生界保留更完整,尤其是下古生界构造更稳定、地层分布广、厚度大、烃源岩条件好,发育多个大型构造圈闭,具有有利的成藏条件,是有利的勘探目标区。

For optimization of the marine Mesozoic and Paleozoic hydrocarbon targets in the South Yellow Sea,we made a comparative study of the hydrocarbon exploration situation,regional tectonics and source rock conditions of the Sichuan and the Subei-South Yellow Sea superimposed basins through field investigation.After comparison of the differences in tectonic evolution between the upper and lower Yangtze,it is found that the marine Paleozoic is more complete on the Laoshan uplift of the South Yellow Sea,especially the lower Paleozoic which is formed in a more stable tectonic environment.The lower marine Paleozoic has large thickness,good hydrocarbon source rock conditions and large structural traps.The Laoshan uplift is a favorable exploration target in the South Yellow Sea Basin.