渝东地区龙门坝剖面二叠系吴家坪组二段地质特征

陈绵琨; 许露露; 姚明君; 刘早学; 温雅茹

doi:10.3969/j.issn.1006-6535.2025.05.008

特种油气藏 >

2025 , Vol. 32 >Issue 5: 66 - 75

DOI: https://doi.org/10.3969/j.issn.1006-6535.2025.05.008

地质勘探

渝东地区龙门坝剖面二叠系吴家坪组二段地质特征

陈绵琨 ,
许露露 ,
姚明君 ,
刘早学 ,
温雅茹

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1.中国石化江汉油田分公司,湖北武汉 430074;
2.湖北省地质调查院,湖北武汉 430034

陈绵琨(1969—),男,高级工程师,1991年毕业于中国地质大学(武汉)地质力学专业,现从事南方海相常规、非常规天然气勘探开发工作。

收稿日期: 2024-04-14

修回日期: 2025-07-20

网络出版日期: 2025-10-30

基金资助

湖北省自然科学基金一般面上项目“鄂西地区陡山沱组烃源岩差异沉积演化特征研究”(2022CFB420);中国石化江汉油田分公司勘探开发研究院科技项目“二叠系、侏罗系典型地层剖面建立与研究项目”(31400032-22-ZC0613-0028-BG02);湖北省地质局科技项目“湖北恩施地区大隆组页岩孔隙连通性研究”(KJ2023-67)

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Geological characteristics of the second member of the Permian Wujiaping Formation in the Longmenba Section, eastern Chongqing

CHEN Miankun ,
XU Lulu ,
YAO Mingjun ,
LIU Zaoxue ,
WEN Yaru

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1. Sinopec Jianghan Oilfield Company, Wuhan, Hubei 430074, China;
2. Hubei Geological Survey, Wuhan, Hubei 430034, China

Received date: 2024-04-14

Revised date: 2025-07-20

Online published: 2025-10-30

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摘要

目前渝东地区梁平—开江海槽内红星地区二叠系吴家坪组二段(简称吴二段)已获得页岩气商业开发,但鄂西海槽中北部地区页岩气成藏条件研究相对薄弱。为此,通过对渝东奉节县龙门坝二叠系吴二段地层剖面进行精细测量及样品分析,阐明了吴二段页岩储层特征,并对鄂西—渝东页岩气勘探潜力区进行了预测。结果表明:吴二段富有机质页岩厚度达29.3 m,可划分为5个小层,富有机质段为1、3、4、5小层,以黑色含泥硅质岩夹硅质页岩为主,地层由下向上钙质含量增加;1、3小层为火山灰密集层段,以101层近顶部C.wangi牙形石首现作为吴家坪阶与长兴阶界线;富有机质段沉积于潮湿—半潮湿—半干旱气候,且底水缺氧和高生产力的古环境,TOC平均为6.34%,为富碳、富硅、低孔、低渗储层;与红星地区和恩施地区相比,尽管吴二段埋深相对较浅(多小于2 000 m),但厚度大(30 m左右)、TOC高(大于4.00%),因此,仍具有良好的页岩气成藏潜力。研究成果可为鄂西—渝东地区页岩气勘探开发示范区的建设提供地质依据。

关键词： 吴家坪组; 黑色页岩; 渝东地区; 储层特征; 成藏潜力

本文引用格式

陈绵琨 , 许露露 , 姚明君 , 刘早学 , 温雅茹 . 渝东地区龙门坝剖面二叠系吴家坪组二段地质特征[J]. 特种油气藏, 2025 , 32(5) : 66 -75 . DOI: 10.3969/j.issn.1006-6535.2025.05.008

Abstract

Currently, commercial development of shale gas has been achieved in the Second Member of the Permian Wujiaping Formation (referred to as Wu 2 Member) in the Hongxing Area within the Liangping-Kaijiang Trough in eastern Chongqing. However, research on shale gas accumulation conditions in the north-central part of the western Hubei Trough remains insufficient. Therefore, through detailed measurement and sample analysis of the Permian Wu 2 Member stratigraphic section in Longmenba, Fengjie County, eastern Chongqing, the characteristics of the Wu 2 Member shale reservoir were clarified and the shale gas exploration potential areas in western Hubei-eastern Chongqing were predicted. The results indicate that the thickness of organic-rich shale in the Wu 2 Member reaches 29.3 m and can be divided into five sub-layers. The organic-rich intervals are sub-layers 1, 3, 4 and 5, mainly composed of black argillaceous siliceous rocks interbedded with siliceous shale, with increasing calcareous content upward in the formation; sub-layers 1 and 3 are volcanic ash-dense intervals,with the first appearance of the conodont C.wangi near the top of bed 101 as the boundary between the Wujiapingian and Changxingian stages; the organic-rich intervals were deposited in a humid,semi-humid,semi-arid climate with anoxic bottom water and high productivity paleoenvironments. The average TOC is 6.34%, characterizing a carbon riched, silicon riched, low porosity, low permeability reservoir. Compared with the Hongxing Area and the Enshi Area, although the Wu 2 Member has a relatively shallow (mostly less than 2 000 m) burial depth, it has large thickness (about 30 m) and high TOC (greater than 4.00%), thus still possessing good shale gas accumulation potential. The research results can provide geological basis for the construction of a shale gas exploration and development demonstration area in western Hubei-eastem Chongqing.

Key words： black shale; reservoir characteristics; accumulation potential; Wujiaping Formation; eastern Chongqing

参考文献

[1] 金之钧,蔡勋育,刘金连,等.中国石油化工股份有限公司近期勘探进展与资源发展战略[J].中国石油勘探,2018,23(1):14-25.
JIN Zhijun,CAI Xunyu,LIU Jinlian,et al.The recent exploration progress and resource development strategy of China Petroleum and Chemical Corporation[J].China Petroleum Exploration,2018,23(1):14-25.
[2] 聂海宽,何治亮,刘光祥,等.中国页岩气勘探开发现状与优选方向[J].中国矿业大学学报,2020,49(1):13-35.
NIE Haikuan,HE Zhiliang,LIU Guangxiang,et al.Status and direction of shale gas exploration and development in China[J].Journal of China University of Mining & Technology,2020,49(1):13-35.
[3] 梁西文,李乐.鄂西渝东区上二叠统吴家坪组页岩气地质条件及勘探潜力[J].石油实验地质,2021,43(3):386-394.
LIANG Xiwen,LI Le.Geological conditions and exploration potential for shale gas in Upper Permian Wujiaping Formation in the region of western Hubei-eastern Chongqing[J].Petroleum Geology & Experiment,2021,43(3):386-394.
[4] 胡德高,周林,包汉勇,等.川东红星地区HY1井二叠系页岩气勘探突破及意义[J].石油学报,2023,44(2):241-252.
HU Degao,ZHOU Lin,BAO Hanyong,et al.Breakthrough and significance of Permian shale gas exploration of Well HY1 in Hongxing Area,eastern Sichuan Basin[J].Acta Petrolei Sinica,2023,44(2):241-252.
[5] 包汉勇,赵帅,梁榜,等.川东红星地区二叠系吴家坪组页岩气富集高产主控因素与勘探启示[J].中国石油勘探,2023,28(1):71-82.
BAO Hanyong,ZHAO Shuai,LIANG Bang,et al.Enrichment and high yield of shale gas in the Permian Wujiaping Formation in Hongxing Area of eastern Sichuan and its exploration implications[J].China Petroleum Exploration,2023,28(1):71-82.
[6] 肖雄,何柳,黄明立.红星地区建南区块吴家坪组优质页岩特征及水平井靶窗优选[J].资源环境与工程,2022,36(4):412-419.
XIAO Xiong,HE Liu,HUANG Mingli.Characteristics of high quality shales and optimization of horizontal well′s target window in Wujiaping Formation,Jiannan Block,Hongxing Area[J].Resources Environment & Engineering,2022,36(4):412-419.
[7] 周向辉,许露露,温雅茹,等.鄂西建始—长阳地区上二叠统大隆组储层特征及沉积环境[J].华南地质与矿产,2019,35(2):244-253.
ZHOU Xianghui,XU Lulu,WEN Yaru,et al.Reservoir characteristics and sedimentary environment of Permian Dalong Formation in Jianshi-Changyang Area of western Hubei Province[J].Geology and Mineral Resources of South China,2019,35(2):244-253.
[8] 谢通,潘诗洋,王亿,等.鄂西恩地1井上二叠统大隆组页岩气富集主控因素分析[J].资源环境与工程,2022,36(2):149-153.
XIE Tong,PAN Shiyang,WANG Yi,et al.Analysis on main controlling factors of shale gas enrichment in Upper Permian Dalong Formation in Well Endi 1,western Hubei[J].Resources Environment & Engineering,2022,36(2):149-153.
[9] DUAN Ke,XIE Tong,WANG Yi,et al.Reservoir characteristics and their controlling factors in siliceous shales of the Upper Permian Dalong Formation,western Hubei Province,south China[J].Applied Sciences,2023,13:1434.
[10] 魏峰,陈孔全,庹秀松,等.川东齐岳山断层北部差异构造变形特征[J].石油实验地质,2019,41(3):348-354.
WEI Feng,CHEN Kongquan,TUO Xiusong,et al.Differential tectonic deformation in the northern Qiyueshan Fault,eastern Sichuan Basin[J].Petroleum Geology & Experiment,2019,41(3):348-354.
[11] 遇昊,陈代钊,韦恒叶,等.鄂西地区上二叠乐平统大隆组硅质岩成因及有机质富集机理[J].岩石学报,2012,28(3):1017-1027.
YU Hao,CHEN Daizhao,WEI Hengye,et al.Origin of bedded chert and organic matter accumulation in the Dalong Formation of Upper Permian in western Hubei Province[J].Acta Petrologica Sinica,2012,28(3):1017-1027.
[12] 邵龙义,张超,闫志明,等.华南晚二叠世层序—古地理及聚煤规律[J].古地理学报,2016,18(6):905-919.
SHAO Longyi,ZHANG Chao,YAN Zhiming,et al.Sequence-palaeogeography and coal accumulation of the Late Permian in south China[J].Journal of Palaeogeography,2016,18(6):905-919
[13] YU Yanming,LI Pingping,GUO Ruixin,et al.Upwelling-induced organic matter enrichment of the Upper Permian Dalong Formation in the Sichuan Basin,SW China and its paleoenvironmental implication[J].Palaeogeography,Palaeoclimatology,Palaeoecology,2021,576:110510.
[14] 沈俊,周炼,冯庆来,等.华南二叠纪—三叠纪之交初级生产力的演化以及大隆组黑色岩系初级生产力的定量估算[J].中国科学:地球科学,2014,44(1):132-145.
SHEN Jun,ZHOU Lian,FENG Qinglai,et al.Primary productivity evolution across the Permian-Triassic boundary in south China and quantitative estimation of the Dalong Formation black shales[J].Science in China:Journal of Earth Science,2014,44(1):132-145.
[15] 吴奎,童金南,李红军,等.全球古—中生代之交牙形石研究进展[J].地球科学,2022,47(3):1012-1037.
WU Kui,TONG Jinnan,LI Hongjun,et al.Advance in the study of global conodont during the Palaeozoic-Mesozoic Upheavals[J].Journal of Earth Science,2022,47(3):1012-1037.
[16] XU Chuan,SHAN Xulong,HE Wentong,et al.The influence of paleoclimate and a marine transgression event on organic matter accumulation in Lacustrine black shales from the Late Cretaceous,southern Songliao Basin,northeast China[J].International Journal of Coal Geology,2021,246:103842.
[17] WU Zhongrui,HE Sheng,HE Zhiliang,et al.Petrographical and geochemical characterization of the Upper Permian Longtan formation and Dalong Formation in the Lower Yangtze region,south China:implications for provenance,paleoclimate,paleoenvironment and organic matter accumulation mechanisms[J].Marine Petroleum Geology,2022,139:105580.
[18] 何龙,王云鹏,陈多福.川南地区晚奥陶—早志留世沉积环境与古气候的地球化学特征[J].地球化学,2019,48(6):555-566.
HE Long,WANG Yunpeng,CHEN Duofu.Geochemical features of sedimentary environment and paleoclimate during Late Ordovician to Early Silurian in southern Sichuan Basin[J].Geochimica,2019,48(6):555-566.
[19] 王超,张柏桥,舒志国,等.四川盆地涪陵地区五峰组—龙马溪组海相页岩岩相类型及储层特征[J].石油与天然气地质,2018,39(3):485-497.
WANG Chao,ZHANG Baiqiao,SHU Zhiguo,et al.Lithofacies types and reservoir characteristics of marine shales of the Wufeng Formation-Longmaxi Formation in Fuling Area,Sichuan Basin[J].Oil & Gas Geology,2018,39(3):485-497.
[20] 许露露,刘早学,张焱林,等.鄂西鹤峰区块大隆组含页岩气地层潜力评价[J].特种油气藏,2018,25(2):13-18.
XU Lulu,LIU Zaoxue,ZHANG Yanlin,et al.Shale gas reservoir potential evaluation of Dalong Formation in Hefeng of western Hubei Province[J].Special Oil & Gas Reservoirs,2018,25(2):13-18.
[21] 丰国秀,陈盛吉.岩石中沥青反射率与镜质体反射率之间的关系[J].天然气工业,1988,8(3):20-25.
FENG Guoxiu,CHEN Shengji.Relationship between bitumen reflectance and vitrinite reflectance in rocks[J].Natural Gas Industry,1988,8(3):20-25.
[22] 王必金,包汉勇,刘皓天,等.川东红星地区吴家坪组富有机质页岩特征与发育控制因素[J].地质科技通报,2023,42(5):70-81.
WANG Bijin,BAO Hanyong,LIU Haotian,et al.Characteristics and controlling factors of the organic-rich shale in the Wujiaping Formation of the Hongxing Area,eastern Sichuan Basin[J].Bulletin of Geological Science and Technology,2023,42(5):70-81.
[23] 陈渝川,林伟,李明涛,等.川南—川东地区龙马溪组优质页岩分布及主控因素[J].特种油气藏,2024,31(4):54-63.
CHEN Yuchuan,LIN Wei,LI Mingtao,et al.The distribution and main controlling factors of high-quality shale in Longmaxi Formation in southern Sichuan-eastern Sichuan Region[J].Special Oil & Gas Reservoirs,2024,31(4):54-63.
[24] 王红岩,周尚文,赵群,等.川南地区深层页岩气富集特征、勘探开发进展及展望[J].石油与天然气地质,2023,44(6):1430-1441.
WANG Hongyan,ZHOU Shangwen,ZHAO Qun,et al.Enrichment characteristics,exploration and exploitation progress,and prospects of deep shale gas in the southern Sichuan Basin,China[J].Oil & Gas Geology,2023,44(6):1430-1441.
[25] 包汉勇,赵帅,梁榜,等.川东红星地区二叠系吴家坪组页岩气富集高产主控因素与勘探启示[J].中国石油勘探,2023,28(1):71-82.
BAO Hanyong,ZHAO Shuai,LIANG Bang,et al.Enrichment and high yield of shale gas in the Permian Wujiaping Formation in Hongxing Area of eastern Sichuan and its exploration implications[J].China Petroleum Exploration,2023,28(1):71-82.
[26] 邹辰,吴永辉,梁兴,等.渝西地区走滑断裂活动背景下地层水对页岩气富集的控制作用[J].大庆石油地质与开发,2023,42(3):11-19.
ZOU Chen,WU Yonghui,LIANG Xing,et al.Control effect of formation water on shale gas enrichment in the background of strike-slip fault activity in western Chongqing[J].Petroleum Geology & Oilfield Development in Daqing,2023,42(3):11-19.
[27] 任官宝,陈雷,计玉冰,等.昭通东北地区五峰组—龙马溪组龙一1亚段页岩岩相类型及其储层特征[J].石油实验地质,2023,45(3):443-454.
REN Guanbao,CHEN Lei,JI Yubing,et al.Shale lithofacies types and reservoir characteristics from Ordovician Wufeng Formation to the first sub-member of the first member of Silurian Longmaxi Formation,northeast Zhaotong Area[J].Petroleum Geology & Experiment,2023,45(3):443-454.

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