| 贵州石炭系黑色页岩层系沉积特征及分布规律研究 |
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| 引用本文： | 卢树藩,陈祎,罗香建,何犇,符宏斌.贵州石炭系黑色页岩层系沉积特征及分布规律研究[J].沉积学报,2021,39(3):672-685. |
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| 作者姓名： | 卢树藩 陈祎 罗香建 何犇 符宏斌 |
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| 作者单位： | 1.贵州省地质调查院，贵阳 550081 |
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| 基金项目： | 贵州省地矿局科研项目（2019黔地矿科合23号,2019黔地矿科合32号）2019-23, 2019-32贵州省地勘基金项目208-9912-JBN-L1D7南方地区1∶5万页岩气基础地质调查填图试点DD20160182 |
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| 摘 要： | 随着我国页岩气勘探的推进，在局部地区已经取得突破并建成一定规模的产能，但天然气资源保障形势依然严峻，亟需加强拓展页岩气新层系沉积环境和富集规律，以进一步扩大页岩气的勘探范围和规模。贵州石炭系黑色页岩作为新发现的页岩气目标层，具有较好的页岩气勘探前景。由于受水城—紫云裂陷槽的控制，贵州石炭系沉积相变复杂，开展该页岩地层的沉积相和沉积模式研究，总结页岩沉积富集特征，有利于推进其页岩气勘探进程。本文通过研究揭示贵州石炭系页岩地层可划分为裂陷槽两侧边缘斜坡相，槽内过渡浅海—半深海相，裂陷槽内槽盆相，水城地区隆起浅海相，威宁地区潮坪—潟湖相沉积，总结具有裂谷边缘—槽盆滞留沉积模式。浅海相、浅海—半深海相、槽盆相、湖盆相是黑色页岩沉积富集的有利区，而具体地层厚度、黑色页岩发育、总有机碳含量（TOC）、干酪根类型受沉积环境和物源区的影响控制明显。
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| 关 键 词： | 石炭系 页岩气 沉积相 沉积模式 页岩富集 |
| 收稿时间： | 2020-06-24 |
Sedimentary Characteristics and Distribution of the Carboniferous Black Shale in Guizhou Province |
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| LU ShuFan,CHEN Yi,LUO XiangJian,HE Ben,FU HongBin.Sedimentary Characteristics and Distribution of the Carboniferous Black Shale in Guizhou Province[J].Acta Sedimentologica Sinica,2021,39(3):672-685. |
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| Authors: | LU ShuFan CHEN Yi LUO XiangJian HE Ben FU HongBin |
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| Institution: | 1.Guizhou Geological Survey, Guiyang 550081, China2.Guizhou Research Institute of Petroleum Exploration & Development, Guiyang 550004, China |
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| Abstract: | With the strengthening of shale gas exploration in recent years， breakthroughs have been made in some areas， and a certain scale of production capacity has been built. However， the resource support capacity is still insufficient. It is necessary to further study the sedimentary environment and shale enrichment law of newly discovered shale strata in recent years to further expand the exploration horizon and scope of shale gas. As a newly discovered shale gas target layer， the Carboniferous black shale in Guizhou has good shale gas exploration prospects. However， due to the control of the Shuicheng-Ziyun rift， the sedimentary phase transition is complex. Therefore， the study of the sedimentary facies and sedimentary model of the shale and the summary of the characteristics of shale enrichment and deposition are conducive to the promotion of shale gas exploration. The study reveals that the Carboniferous shale strata in Guizhou Province can be divided into the two sides of the rifting trough， slope facies， transitional shallow to semi deep sea facies in the trough， trough basin facies in the rifting trough， uplifted shallow sea facies in the Shuicheng area， and tidal flat lagoon facies deposition in the Weining area. The model of the rifting margin trough basin retention sedimentation is summarized. Formation thickness， development of black shale， total organic carbon content （TOC）， and kerogen type are greatly influenced by the provenance supply area of the sedimentary model， while shallow marine， shallow semi deep marine， trough basin， and lagoon basin are favorable areas for the deposition and enrichment of the black shale. |
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