海洋地质前沿2017，Vol.33Issue(12)：24-36,13.DOI:10.16028/j.1009-2722.2017.12004
南黄海中部隆起CSDP-2井中—古生界烃源岩精细评价
DETAILED ASSESSMENT OF MESO-PALEOZOIC HYDROCARBON SOURCE ROCKS: IMPLICATIONS FROM WELL CSDP-2 ON THE CENTRAL UPLIFT OF THE SOUTH YELLOW SEA BASIN
摘要
Abstract
The well CSDP-2 is the first whole coring deep hole ever drilled on the Central Uplift of the South Yellow Sea Basin.It penetrated many sets of clastic and carbonate rocks from the Late Ordovician Formation up to the Early Triassic Qinglong Formation unconformably under the Neogene.The data of organic abundance,organic types,thermal evolution history,soluble organic matter and hydrocarbon-generating intensity of the sequence confirms that on the Central Uplift there occurs three sets of effective hydrocarbon source rocks:the lipophilic limestone of the Upper Member of the Qinglong Formation,the mudstone of the Upper Ordovician up to the upper member of the Lower Silurian and the oil-gas type limestone of the Middle and Upper Members of the Carboniferous.The effective hydrocarbon source rocks that generated gas are mainly the mudstone and carbonaceous mudstone of the Dalong Formation-Longtan Formation,the stink limestone of Upper Qixia Formation which is rich in organic,limestone of middle-lower Carboniferous and the carbonaceous mudstone in the bottom of Carboniferous.The Mesozoic and Paleozoic total hydrocarbon-generating intensity revealed by the drilling is (20.7619-31.2839) × 108m3gas equivalent/km2 and its gas-generating intensity is roughly comparable to large and medium-sized gas fields of the world.According to our calculation,the total oil-generating intensity of the oil source rock is (43.076-55.30)× 104t/km2,and the total gas-generating intensity of gas source rock is (16.4543-25.7539)× 108m3/km2.The total gas-generating intensity of source rocks is 4-5 times higher than the oil-generating intensity,and the hydrocarbon-generating intensity of clastic rocks is twice higher than that of limestone.High hydrocarbon-generating intensity and abundance of hydrocarbon source layers have provide sufficient materials for a mediumlarge oil and gas accumulation,showing a good oil and gas exploration prospect of the Mesozoic-Paleozoic in the region of the Central Uplift of the South Yellow Sea Basin.关键词
南黄海中部隆起/CSDP-2井/中—古生界/烃源岩精细评价Key words
Central Uplift of the South Yellow Sea Basin/well CSDP-2/Meso-Paleozoic/detailed assessment on hydrocarbon source rocks分类
海洋科学引用本文复制引用
肖国林,蔡来星,郭兴伟,吴志强,董贺平,李宝刚..南黄海中部隆起CSDP-2井中—古生界烃源岩精细评价[J].海洋地质前沿,2017,33(12):24-36,13.基金项目
国家海洋地质专项“大陆架科学钻探”(GZH201100202) （GZH201100202）
国家海洋地质专项(DD20160147) （DD20160147）
