| 黔南坳陷下寒武统页岩气成藏条件与有利区带评价 |
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| 引用本文： | 王鹏万,陈子炓,贺训云,李娴静,马立桥,徐政语,董庸,黄羚.黔南坳陷下寒武统页岩气成藏条件与有利区带评价[J].天然气地球科学,2011,22(3):518-524. |
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| 作者姓名： | 王鹏万 陈子炓 贺训云 李娴静 马立桥 徐政语 董庸 黄羚 |
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| 作者单位： | 1. 中国石油杭州地质研究院,浙江杭州,310023
2. 中国石油杭州地质研究院,浙江杭州310023;中国科学院地质与地球物理研究所,北京100029;中国科学院研究生院,北京100049 |
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| 基金项目： | 全国油气资源战略选区调查与评价项目 |
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| 摘 要： | 页岩气是一种非常规天然气,主要以吸附或游离状态存在。黔南坳陷早寒武世经历被动大陆边缘裂陷盆地演化阶段,沉积了一套海相黑色页岩。通过野外露头、钻井及地球化学等资料,认为黔南坳陷下寒武统牛蹄塘组(渣拉沟组)有机质丰度高(TOC值为2.0%~3.5%)、热演化程度高(RO值为1.3%~3%)、厚度大(最厚可达350 m)、微裂缝发育、埋深适中,具有形成页岩气藏的优越条件。选定页岩气相关评价指标,认为黔南坳陷贵阳—独山一线以东的东北部地区为下寒武统牛蹄塘组页岩气勘探的有利区带。
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| 关 键 词： | 黔南坳陷 牛蹄塘组 页岩气 有利区带 |
Accumulation of Lower Cambrian Niutitang Shale Gas and Prediction of Potential Area in Qiannan Sag |
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| WANG Peng-wan,CHEN Zi-liao,HE Xun-yun,LI Xian-jing,MA Li-qiao,XU Zheng-yu,DONG Yong,HUANG Ling.Accumulation of Lower Cambrian Niutitang Shale Gas and Prediction of Potential Area in Qiannan Sag[J].Natural Gas Geoscience,2011,22(3):518-524. |
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| Authors: | WANG Peng-wan CHEN Zi-liao HE Xun-yun LI Xian-jing MA Li-qiao XU Zheng-yu DONG Yong HUANG Ling |
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| Affiliation: | 1(1.Hangzhou Institute of Petroleum Geology,PetroChina Exploration and Development Research Institute,Hangzhou 310023,China;2.lnstitute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China;3.Graduate School of the Chinese Academy of Sciences,Beijing 100049,China) |
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| Abstract: | Shale gas,as an unconventional natural gas,mainly exists in states of absorption or free.The Qiannan sag experienced the phase of the passive ocean margin rift basin in the early Cambrian,deposited a set of marine facies shale.By means of information of outcrop,well and their geochemistry,the lower Cambrian Niutitang Formation(Zhalagou Formation) in the Qiannan sag has high abundance of organic matter(TOC in range of 2.0%-5%),high maturity(RO between 1.3%-3%),high thickness(maximum value is about 350 m),micro-fractures,and moderate depth.Thus,it is of favorable conditions for shale gas accumulation.Selected parameters suggest that the eastern Guiyang-Dushan area in the northeast part of the Qiannan sag would be a favorable place for lower Cambrian Niutitang shale gas exploration. |
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| Keywords: | Qiannan sag Niutitang Formation Shale gas Favorable place |
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