| 黔南坳陷海相优质烃源岩的生烃潜力及时空分布 |
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| 引用本文： | 腾格尔,秦建中,郑伦举,Tenger,QIN Jianzhong,ZHENG Lunjü.黔南坳陷海相优质烃源岩的生烃潜力及时空分布[J].地质学报,2008,82(3):366-372. |
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| 作者姓名： | 腾格尔 秦建中 郑伦举 Tenger QIN Jianzhong ZHENG Lunjü |
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| 作者单位： | 中国石化石油勘探开发研究院无锡石油地质研究所,江苏无锡,214151 |
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| 基金项目： | 本文为国家重点基础研究发展基金规划"973"项目(编号2005CB422102)资助的成果. |
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| 摘 要： | 黔南坳陷典型古油气藏的精细解剖对南方海相油气勘探有借鉴意义.本文利用沉积、有机岩石学和地球化学等综合手段,建立了黔南坳陷麻江古油藏、凯里残余油气藏地区和雪峰隆起西缘的二叠系-震旦系地球化学综合剖面,重点探讨了该地区优质烃源岩的生烃潜力和时空分布.黔东南地区,纵向自震旦系至二叠系均有烃源岩发育,其中早寒武世初期和二叠纪发育有两套优质烃源岩,以下寒武统盆地相、斜坡相的黑色页岩发育最好,有机质丰度高(TOC普遍大于2%),类型好(偏腐殖型),厚度大,是气候变暖、海平面上升和生物大爆发等全球性重大地质事件的耦合作用下,由热液活动、上升洋流等共同引起的高古生产力和缺氧环境控制的产物,是本地区大中型油气田形成的主要物质基础.二叠纪盆地相和泻湖相中发育的优质烃源岩对黔中隆起及其周缘地区油气成藏也具有重要作用.
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| 关 键 词： | 黔南坳陷 古油藏 优质烃源岩 生烃潜力 时空分布 |
| 修稿时间： | 2007年4月30日 |
Hydrocarbon Potential on Excellent Hydrocarbon Source Rock in Southern Guizhou Depression and Its Spacial-Temporal Distribution |
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| Tenger,QIN Jianzhong.Hydrocarbon Potential on Excellent Hydrocarbon Source Rock in Southern Guizhou Depression and Its Spacial-Temporal Distribution[J].Acta Geologica Sinica,2008,82(3):366-372. |
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| Authors: | Tenger QIN Jianzhong |
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| Abstract: | Central Guizhou and its adjacent areas experienced basement,proto-Tethys,paleo-Tethys and neo-Tethys tectonic cycles.The six structural stages have been further recognized as following,the early rift stage,platform-passive margin stage(Nanhuanian-Silurian),platform-intra-continental rift stage(Devonian-Permian),stable platform stage(early-to mid-Triassic),continental fault-depression stage(late Triassic-Paleogene),and fault-fold rise stage(Neogene-Quaternary).The key tectonic changes controlling the tectono-stratigraphic framework of the Central Guizhou and adjacent areas are the Duyun,Guangxi,Central Indosinian,Late Yanshanian and Himalayan movements.The structures in study areas are characterized by differential deformation.Four structural belts can be recognized as the Xuefeng,Majiang-Kaili,Qingzhong and northwest Guizhou tectonic belt.The structural segmentation,controlled by a series of NW-WNW transfer zones,is also apparent in this district.Three types of cap-rocks may develop in the Central Guizhou and adjacent areas as following:salt rock,mudstone and shale,and condensed sandstone.The distribution of salt rock is limited in the area.The regional caprocks with good reservation are mudstone and shale of the Lower Cambrian and Mid-Lower Silurian,as well as Qingxudong Formation limestone and marl of the Lower Cambrian. |
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| Keywords: | southern Guizhou depression paleo-oil pool excellent source rock hydrocarbon potential spatio-temporal distribution |
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