靳雅夕,蔡潇,袁艺,吴宇

• 1:中国石化华东分公司石油勘探开发研究院

摘要(Abstract)：

渝东南地区地处上扬子前陆盆地川中隆起与黔中隆起之间,古生界发育多套厚层黑色页岩,其中下志留统龙马溪组黑色页岩分布极为广泛,为区内重要的烃源岩。根据探井岩心X-射线衍射测试结果,页岩中粘土矿物的组合类型为伊利石、有序的伊/蒙间层和绿泥石,其中伊利石相对含量最多,平均含量为54%,伊/蒙间层次之,平均含量为36%。在纵向上粘土矿物的组合类型没有变化,但随着埋深的增加,伊/蒙间层不断向伊利石进行成岩转化,绿泥石的含量逐渐降低,埋藏加热作用在成岩过程中起主导作用。粘土矿物的组合类型也反映了干旱的古气候和富含钾、镁、铁离子的古水介质特征,盐碱性水介质在成岩过程中起到了重要的控制作用。伊/蒙间层的间层比和镜质体反射率表明龙马溪组黑色页岩已达到晚成岩阶段,有机质演化属于过成熟期。

关键词(KeyWords)： 粘土矿物;页岩;龙马溪组;古环境;成岩作用;渝东南地区

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 靳雅夕,蔡潇,袁艺,吴宇

参考文献(References)：

• [1]马力,陈焕疆,甘克文,等.中国南方大地构造和海相油气地质[M].海相油气地质,2004:52-98.Ma Li,Chen Huanjiang,Gan Kewen,et al.Tectonic and marine origin petroleum geologic in South China[M].Marine Origin Petoleum Geology,2004:52-98.
• [2]Wang K,Orth C J,Attrep M,et al.The great latest Ordovicianextinction on the South China Plate:chemostratigraphic studies ofthe Ordovician-Silurian boundary interval on the Yangtze Platform Event markers in Earth history[J].Palaeogeography,Palaeocli-matology,Palaeoecology,1993,104(2):61-79.
• [3]刘洪,陈乔,王森,等.渝东南下志留统龙马溪组页岩矿物成分及脆性特征实验研究[J].科学技术与工程,2013,13(29):8567-8571.Liu Hong,Chen Qiao,Wang Sen,et al.Experimental study of mineral composition and brittle characteristics in Longmaxi Formation of lower Silurian,southeast Chongqing[J].Science technology and engineering,2013,13(29):8567-8571.
• [4]李一凡,樊太亮,高志前,等.渝东南地区志留系黑色页岩层序地层研究[J].天然气地球科学,2012,23(2):299-306.Li Yifan,Fan Taigao,Gao zhiqian,et al.Sequence stratigraphy of Silurian Longmaxi Formation black shale in southeast district of Chongqing[J].Natural gas geosciences,2012,23(2):299-306.
• [5]王世谦,陈更生,董大忠,等.四川盆地下古生界页岩气藏形成条件与勘探前景[J].天然气工业,2009,29(5):51-58.Wang Shiqian,Chen Gengsheng,Dong Dazhong,et al.Accumulation conditions and exploitation prospect of shale gas in the Lower Paleozoic Sichuan basin[J].Natural gas industry,2009,29(5):51-58.
• [6]蒲泊伶,蒋有录,王毅,等.四川盆地下志留统龙马溪组页岩气成藏条件及有利地区分析[J].石油学报,2010,31(2):225-230.Pu Boling,Jiang Youlu,Wang Yi,et al.Reservoir-forming conditions and favorable exploration zones of shale gas in Lower Silurian Longmaxi For-mation of Sichuan Basin[J].Acta Petrolei Sinica,2010,31(2):225-230.
• [7]陈尚斌,朱炎铭,王红岩,等.四川盆地南缘下志留统龙马溪组页岩气储层矿物成分特征及意义[J].石油学报,2011,32(5):775-782.CHEN Shang-bin,Zhu Yan-Ming,Wang Hong-yan,et al.Characteris-tics and significance of mineral compositions of Lower Silurian Long-maxi Formation shale gas reservoir in the southern margin of Sichuan Ba-sin[J].Acta Petrolei Sinica,2011,32(5):775-782.
• [8]李娟,于炳松,刘策,等.渝东南地区黑色页岩中粘土矿物特征兼论其对储层物性的影响——以彭水县鹿角剖面为例[J].现代地质,2012,26(4):733-740.Li Juan,YU Bing-song,LIU Ce,et al.Clay Minerals of Black Shale andTheir Effects on Physical Properties of Shale Gas Reservoirs in the South-east of Chongqing:A Case Study from Lujiao Outcrop Section inPengshui,Chongqing[J].Geoscience,2012,26(4):733-740.
• [9]王丹萍,周祖翼,韩广民,等.巢湖北部地区海相地层黏土矿物特征及其地质意义[J].吉林大学学报(地球科学版),2011,41(1):170-180.Wang Danping,Zhou Zuyi,Han Guangmin,et al.Characteristics andgeological significance of clay minerals of marine sedimentary rocks inNorth Chaohu region[J].Journal of Jilin university(Earth science edi-tion).2011,41(1):170-180.
• [10]王行信.泥岩中碎屑高岭石的分布及其在沉积环境研究中的意义[J].大庆石油地质与开发,1983,2(1):1-6.Wang Xingxin.The distribution of clastic kaolinite in mudstone and its significance in the study of sedimentary environment[J].1983,2(1):1-6.
• [11]吴礼明,丁文龙,张金川,等.渝东南地区下志留统龙马溪组富有机质页岩储层裂缝分布预测[J].石油天然气学报,2011,33(9):43-46.Wu Liming,Ding Wenlong,Zhang Jinchuan,et al.Prediction of organic-rich shale reservoir fracture distribution in Silurian Longmaxi Formationof southeast district of Chongqing J].Journal of oil and gas technology,2011,33(9):43-46.
• [12]武瑾,王红岩,拜文华,等.渝东南龙马溪组页岩储层特征及吸附影响因素分析[J].断块油气田,2013,20(6):713-718.Wu Jin,Wang Hongyan,Bai Wenhua,et al.Analysis on characteristicsof Longmaxi Formation shale reservoir in southeast district of Chongqingand adsorption influence factor[J].Fault-block oil&gas field,2013,20(6):713-718.
• [13]严德天,王清晨,陈代钊,等.扬子及周缘地区上奥陶统下志留统烃源岩发育环境及其控制因素[J].地质学报,2008,82(3):321-327.Yan Detian,Wang Qingchen,Chen Daizhao,et al.Sedimentary environ-ment and development controls of the hydrocarbon sources beds:the up-per ordovician Wufeng Formation and the Lower Silurian Longmaxi For-mation in the Yangtze area[J].Acta Geologica Sinica,2008,82(3):321-327.
• [14]韩双彪,张金川,邢雅文,等.渝东南下志留统龙马溪组页岩气聚集条件与资源潜力[J].煤炭学报,2013,38(1):168-173.Han Shuangbiao,Zhang Jinchuan,Xing Yawen,et al.Shale gas accumu-lation conditions and resource potential of the Lower Silurian LongmaxiFormation in southeast Chongqing[J].Journal of China coal society,2013,38(1):168-173.