Lithologic Reservoirs ›› 2021, Vol. 33 ›› Issue (5): 11-21.doi: 10.12108/yxyqc.20210502

• PETROLEUM GEOLOGY • Previous Articles     Next Articles

Biostratigraphic characteristics and exploration significance of Wufeng-Longmaxi Formation in northwestern Hunan

ZHANG Bing1,2,3, TAN G Shuheng1,2,3, XI Zhaodong1,2,3, LIN Donglin1,2,3, YE Yapei1,2,3   

  1. 1. School of Energy Resources, China University of Geosciences(Beijing), Beijing 100083, China;
    2. Key Laboratory of Marine Reservoir Evolution and Hydrocarbon Enrichment Mechanism, Ministry of Education, Beijing 100083, China;
    3. Beijing Key Laboratory of Unconventional Natural Gas Geological Evaluation and Development Engineering, Beijing 100083, China
  • Received:2020-11-10 Revised:2021-01-31 Online:2021-10-01 Published:2021-09-30

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Abstract: The black shale is widely developed in Wufeng Formation of Upper Ordovician and Longmaxi Formation of Lower Llandovery in northwestern Hunan, which has good prospects for shale gas exploration and development. In order to study its biostratigraphic characteristics, the fossil species of well XY-3 were analyzed. Combined with graptolite and natural gamma(GR) logging curves, the sequence of biological graptolite in the study area was established. According to the changes of organic matter abundance, mineral composition and sedimentary environment of each graptolite zone, the favorable enrichment intervals of shale gas in the study area were identified. The results show that:(1) Wufeng-Longmaxi Formation in the study area can be divided into eight graptolite zones:WF2, WF3, WF4, LM2-LM3, LM4, LM5, LM6, LM7. Affected by the uplift of underwater highland in Hunan and Hubei, the study area lacks LM1 zone.(2) WF2-WF3 and LM2-LM4 graptolite zones were deposited in poor oxidation environment, and the lithology was medium carbon siliceous shale facies. WF4 graptolite zone was deposited in oxidation environment, and its lithology was low-carbon mixed shale facies. LM5-LM7 graptolite zone was deposited in oxidation environment, and its lithology was low-carbon clay shale facies. WF2-WF3 and LM2-LM4 graptolite zones were characterized by high TOC, high brittleness and high porosity, and have certain hydrocarbon generation potential and fracturing ability, which can be used as favorable intervals for shale gas exploration(. 3) Compared with Changning and other areas, the thickness of organic matter rich layers in the study area was relatively thin, and the abundance of organic matter was relatively low. Because it was affected by the underwater highlands in Hunan and Hubei, the relatively oxidized water body was not conducive to the preservation of organic matter, and some organic matter rich layers were missing. The research results can provide reference for shale gas exploration in northwestern Hunan.

Key words: graptolite, biostratigraphy, underwater highland, Wufeng-Longmaxi Formation, Upper Ordovician, Llandovery, northwestern Hunan

CLC Number: 

  • TE122
[1] 邹才能, 杨智, 朱如凯, 等.中国非常规油气勘探开发与理论技术进展.地质学报, 2015, 89(6):979-1007. ZOU C N, YANG Z, ZHU R K, et al. Progress in China's unconventional oil & gas exploration and development and theoretical technologies. Acta Geologica Sinica, 2015, 89(6):979-1007.
[2] 庞维华, 丁孝忠, 高林志, 等.湖南下寒武统层序地层格架与古环境演化变迁.中国地质, 2011, 38(3):560-576. PANG W H, DING X Z, GAO L Z, et al. Characteristics of sequence stratigraphy and plaeoenvironmental evolution of Lower Cambrian strata in Hunan province. Geology in China, 2011, 38(3):560-576.
[3] 秦明阳, 郭建华, 何红生, 等.四川盆地外复杂构造区页岩气地质条件及含气性特征:以湘西北五峰组-龙马溪组为例. 中南大学学报, 2018, 49(8):1979-1990. QIN M Y, GUO J H, HE H S, et al. Geological conditions and gas-bearing characteristics of shale gas in complex structural areas out of Sichuan Basin:A case of Wufeng-Longmaxi Formation in northwestern Hunan, China. Journal of Central South University, 2018, 49(8):1979-1990.
[4] 翟刚毅, 包书景, 庞飞, 等.贵州遵义地区安场向斜"四层楼"页岩油气成藏模式研究.中国地质, 2017, 44(1):1-12. ZHAI G Y, BAO S J, PANG F, et al. Peservoir-forming pattern of "four-storey" hydrocarbon accumulation in Anchang syncline of northern Guizhou province. Geology in China, 2017, 44(1):1-12.
[5] 王剑, 段太忠, 谢渊, 等.扬子地块东南缘大地构造演化及其油气地质意义.地质通报, 2012, 31(11):1739-1749. WANG J, DUAN T Z, XIE Y, et al. The tectonic evolution and its oil and gas prospect of southeast margin of Yangtze block. Geological Bulletin of China, 2012, 31(11):1739-1749.
[6] 周志, 姜振学, 李世臻, 等.鄂西建始地区五峰组-龙马溪组黑色页岩生物地层特征.中国科学:地球科学, 2021, 46(2):432-443. ZHOU Z, JIANG Z X, LI S Z, et al. Biostratigraphic characteristics of black graptolite shale in Wufeng Formation and Longmaxi Formation in Jianshi area of west Hubei. Science China:Earth Science, 2021, 46(2):432-443.
[7] 王红岩, 郭伟, 梁峰, 等.川南自201井区奥陶系-志留系间黑色页岩生物地层.地层学杂志, 2018, 42(4):455-460. WANG H Y, GUO W, LIANG F, et al. Biostratigraphy of Ordovician-Silurian black shale at well Zi 201, southern Sichuan. Journal of Stratigraphy, 2018, 42(4):455-460.
[8] 邹才能, 龚剑明, 王红岩, 等.笔石生物演化与地层年代标定在页岩气勘探开发中的重大意义.中国石油勘探, 2019, 24(1):1-6. ZOU C N, GONG J M, WANG H Y, et al. Importance of graptolite evolution and biostratigraphic calibration on shale gas exploration. China Petroleum Exploration, 2019, 24(1):1-6.
[9] 陈旭, 戎嘉余, 樊隽轩, 等.奥陶-志留系界线地层生物带的全球对比.古生物学报, 2000, 39(1):100-114. CHEN X, RONG J Y, FAN J X, et al. A Global correlation of biozones across the Ordovician-Silurian boundary. Acta Palaeontologica Sinica, 2000, 39(1):100-114.
[10] 聂海宽, 李东晖, 姜涛, 等.基于笔石带特征的页岩等时地层测井划分方法及意义:以四川盆地及其周缘五峰组-龙马溪组为例.石油学报, 2020, 41(3):274-281. NIE H K, LI D H, JIANG T, et al. Logging isochronous stratigraphic division of shale based on characteristics of graptolite zones and its significance:A case study of Wufeng FormationLongmaxi Formation in Sichuan Basin and its periphery. Acta Petrolei Sinica, 2020, 41(3):274-281.
[11] CHEN X, ZHANG Y D, FAN J X, et al. Onset of the Kwangsian Orogeny as evidenced by biofacies and lithofacies. Science China:Earth Sciences, 2012, 55(10):1592-1600.
[12] CHEN X, BERGSTRM S M, ZHANG Y D, et al. Aregional tectonic vent of Katian(Late Ordovician)age across three major blocks of China. Chinese Science Bulletin, 2013, 58(34):4292-4299.
[13] 陈洪德, 郭彤楼, 侯明才, 等.中上扬子叠合盆地沉积充填过程与物质分布规律.北京:科学出版社, 2012. CHEN H D, GUO T L, HUO M C, et al. Sedimentary filling process and material distribution in the middle upper Yangtze superimposed basin. Beijing:Science Press, 2012.
[14] CHEN C, MU C L, ZHOU K K, et al. The geochemical characteristics and factors controlling the organic matter accumulation of the Late Ordovician-Early Silurian black shale in the Upper Yangtze Basin, South China. Marine & Petroleum Geology, 2016, 76:159-175.
[15] 陈旭, 樊隽轩, 张元动, 等.五峰组及龙马溪组黑色页岩在扬子覆盖区内的划分与圈定. 地层学杂志, 2015, 39(4):351-358. CHEN X, FAN J X, ZHANG Y D, et al. Subdivision and delineation of the Wufeng and Longmaxi black shale in the subsurface areas of the Yangtze platform. Journal of Stratigraphy, 2015, 39(4):351-358.
[16] 穆恩之, 李积金, 葛梅御, 等. 中国笔石. 北京:科学出版社, 2002. MU E Z, LI J J, GE M Y, et al. China of Graptolite. Beijing:Science Press, 2002.
[17] 易定鑫, 田景春, 井翠, 等.五峰组-龙马溪组笔石带划分与沉积环境的意义:以重庆武隆接龙剖面为例.东北石油大学学报, 2019, 43(6):33-43. YI D X, TIAN J C, JING C, et al. Graptolite biostratigraphy and sedimentary environment significance:A case study from the Wufeng Formation-Longmaxi Formation of Jielong section in Wulong, southeastern Chongqing. Journal of Northeast Petroleum University, 2019, 43(6):33-43.
[18] 周志, 翟刚毅, 石砥石, 等.鄂西-渝东北地区五峰组-龙马溪组页岩气成藏地质条件分析.石油实验地质, 2019, 41(1):1-9. ZHUO Z, ZHAI G Y, SHI D S, et al. Shale gas reservoir geology of the Upper Ordovician Wufeng Formation-Lower Silurian Longmaxi Formation in western Hubei and northeastern Chongqing. Petroleum Geology and Experiment, 2019, 41(1):1-9.
[19] 杨洋, 石万忠, 张晓明, 等.页岩岩相的测井曲线识别方法:以焦石坝地区五峰组-龙马溪组为例.岩性油气藏, 2021, 33(2):135-146. YANG Y, SHI W Z, ZHANG X M et al. Identification method of shale lithofacies by logging curve:A case study from WufengLongmation in Jiaoshiba area. Lithologic Reservoirs, 2021, 33(2):135-146.
[20] 车世琦.测井资料用于页岩岩相划分及识别:以涪陵气田五峰组-龙马溪组为例.岩性油气藏, 2018, 30(1):121-132. CHE S Q. Shale lithofacies identification and classification by using logging data:A case of Wufeng-Longmaxi Formation in Fuling gas field, Sichuan Basin. Lithologic Reservoirs, 2018, 30(1):121-132.
[21] LOUCKS R G, REED R M, RUPPEL S C, et al. Spectrim of pore typesand networks in mudrocks and a descriptive classification for matrixrelated mudrock pores. AAPG Bulletin, 2012, 96(6):1071-1098.
[22] 朱逸青, 王兴志, 冯明友, 等.川东地区下古生界五峰组-龙马溪组页岩岩相划分及其与储层关系.岩性油气藏, 2016, 28(5):59-66. ZHU Y Q, WANG X Z, FENG M Y, et al. Lithofacies classification and its relationship with reservoir of the Lower Paleozoic Wufeng-Longmaxi Formation in the eastern Sichuan Basin. Lithologic Reservoirs, 2016, 28(5):59-66.
[23] 高乔, 王兴志, 朱逸青, 等.川南地区龙马溪组元素地球化学特征及有机质富集主控因素.岩性油气藏, 2019, 31(4):72-84. GAO Q, WANG X Z, ZHU Y Q, et al. Elemental geochemical characteristics and main controlling factors of organic matter enrichment of Longmaxi Formation in southern Sichuan. Lithologic Reservoirs, 2019, 31(4):72-84.
[24] 何贵松, 万静雅, 刘娜娜, 等.川南地区南页1井五峰组-龙马溪组页岩特征与生物地层.地层学杂志, 2019, 43(4):377-387. HE G S, WAN J Y, LIU N N, et al. Characteristics and biostratigraphy of Wufeng-Longmaxi Formation shale in Nanye well 1 of nanchuan arra.Journal of Stratigraphy, 2019, 43(4):377-387.
[25] 罗超, 王兰生, 石学文, 等.长宁页岩气田宁211井五峰组-龙马溪组生物地层.地层学杂志, 2017, 41(2):142-152. LUO C, WANG L S, SHI X W, et al. Biostratigraphy of the Wufeng to Longmaxi Formation at well Ning 211 of Changning shale gas field. Journal of Stratigraphy, 2017, 41(2):142-152.
[26] 梁峰, 王红岩, 拜文华, 等.川南地区五峰组-龙马溪组页岩笔石带对比及沉积特征.天然气工业, 2017, 37(7):21-26. LIANG F, WANG H Y, BAI W H, et al. Graptolite correlation and sedimentary characteristics of Wufeng-Longmaxi shale in southern Sichuan Basin. Natural Gas Industry,2017, 37(7):21-26.
[27] 陈旭, 樊隽轩, 王文卉, 等.黔渝地区志留系龙马溪组黑色笔石页岩的阶段性渐进展布模式.中国科学:地球科学, 2017, 47(6):720-732. CHEN X, FAN J X, WANG W H, et al. Stage-progressive distribution pattern of the Lungmachi black graptolitic shales from Guizhou to Chongqing, Central China. Science China Earth Sciences, 2017, 47(6):720-732.
[28] 武瑾, 梁峰, 吝文, 等.渝东北地区巫溪2井五峰组-龙马溪组页岩气储层及含气性特征.石油学报, 2017, 38(5):512-524. WU J, LIANG F, LIN W, et al. Reservoirs characteristics and gas-bearing capacity of Wufeng-Longmaxi Formation shale in well WX-2, northeast Chongqing area. Acta Petrolei Sinica, 2017, 38(5):512-524.
[29] 郭少斌, 王义刚.鄂尔多斯盆地石炭系本溪组页岩气成藏条件及勘探潜力.石油学报, 2013, 34(5):445-452. GUO S B, WANG Y N. Shale gas accumulation conditions and exploration potential of Carboniferous Benxi Formation in Ordos Basin. Acta Petrolei Sinica, 2013, 34(5):445-452.
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