Facies Characteristics and Sedimentary Evolution Model of the 7thMember of Dameigou Formation in Yuqia Area, North Qaidam Basin
-
摘要: 近年来，中国陆相盆地页岩油成为油气勘探开发的热点和难点。笔者以柴达木盆地北缘鱼卡地区中侏罗统大煤沟组七段为研究对象，通过岩心、普通薄片观察、有机地化、X衍射等实验，研究了大煤沟组七段的岩相特征、沉积演化模式，为优质烃源岩的发育分布提供理论依据。研究结果表明，该段共发育6种岩相，垂向上可划分为3个沉积阶段。阶段A为温湿气候下的三角洲前缘、浅湖环境，发育贫有机质块状黏土质、硅质泥岩相，强陆源输入导致水体富氧，使该阶段页岩油气潜力较差，TOC平均为0.79%；阶段B为构造沉降作用下半深湖-深湖环境，发育富有机质块状黏土质泥岩相，深湖还原环境为有机质提供了良好保存条件，使该阶段页岩油气潜力较高，TOC平均为4.16%；阶段C为干旱气候、构造沉降共同控制的半深湖-深湖环境，发育富有机质纹层状钙质、富黏土钙质、黏土质泥岩相，湖水咸化分层提供了良好的有机质保存条件，适应性藻类勃发提供了高生产力，使该阶段页岩油气潜力最高，TOC平均为5.03%。Abstract: In recent years, shale oil incontinental basins of China has become a hotspot in oil and gas exploration and development.This paper studied the lithofacies characteristics and sedimentary evolution model of the 7th member of Dameigou formation of Middle JurassicinYuqia area, north Qaidam Basin by means of observation of core and thin section, organic geochemistry and X-ray diffraction experiments.It provided theoretical basis for the development and distribution of high-quality source rocks.The results show that there are six types of lithofacies, which can be divided into three sedimentary stagesin the vertical direction.Stage A is the delta front and shallow lake sedimentary environment under warm and humid climate,which develops massive poor-organicclay and siliceous mudstone facies.Strong terrestrial input leads to the oxygen-rich water bodywith an average TOC of 0.79%.Therefore, shale oil and gas potential is poor at this stag.Stage B is a semi-deep to deep lake sedimentary environment under tectonic subsidence, which develops the massive rich organic clay mudstone facies.The deep-lakereducing environment provides good condition for the preservation of organic matter.A higher potential of oil and gas appears with an average TOC of 4.16%.Stage C is a semi-deep to deep lake sedimentary environment jointly controlled by arid climate and tectonic subsidence, which develops the laminar calcareous organic-rich matter,calcareous clay-rich and clayey mudstone facies.Good preservation conditions of organic matter by lake salinity stratification and high productivity of adaptive alga make stage C the highest shale oil and gas potential with an average TOC of 5.03%.
-
-
白静.我国页岩油资源勘探潜力巨大[N].中国矿业报,2019-11-12(005). BAI Jing. Exploration Potential of Shale Oil Resources in China is Huge[N]. China Mining News,2019-11-12(005).
白悦悦,刘招君,孙平昌,等.柴北缘鱼卡地区中侏罗统石门沟组沉积相特征研究[J].矿产勘查,2020,11(07):1321-1333. BAI Yueyue,LIU Zhaojun, SUN Pingchang, et al. Sedimentary Facies Characteristics in Middle Jurassic Shimengou Formation,YuqiaArea,North Qaidam Basin[J]. Mineral Exploration,2020,11(07):1321-1333.
邓远,陈世悦,蒲秀刚,等.渤海湾盆地沧东凹陷孔店组二段细粒沉积岩形成机理与环境演化[J].石油与天然气地质,2020(04):811-823+890. DENG Yuan, CHEN Shiyue, PU Xiugang, et al. Formation Mechanism and Environmental Evolution of Fine Grained Sedimentary Rocks from the Second Member of Kongdian Formation in Cangdong Sag, Bohai Bay Basin[J]. Oil & Gas Geology,2020(04):811-823+890.
高先志,陈发景,马达德,等.中、新生代柴达木北缘的盆地类型与构造演化[J].西北地质,2003,39(04):16-24. GAO Xianzhi, CHEN Fajing, MA Dade, et al. BasinTypes and Tectonic Evolution in the northern Margin of the Mesozoic and Cenozoic Qaidam Basin[J]. Northwestern Geology,2003,39(04):16-24.
郭天旭,周志,任收麦.柴达木盆地北缘侏罗系(柴页1井)发现陆相页岩气[J].中国地质,2017,44(02):401-402. GUO Tianxu, ZHOU Zhi, REN Shoumai. Jurassic shale Gas Discovered at Chaiye-1 Well on the Northern Margin of Qaidam Basin[J].Geology in China,2017,44(02):401-402.
郭天旭,任收麦,包书景,等.柴达木盆地北缘中侏罗统大煤沟组泥页岩吸附特征及其影响因素[J].地质科技情报,2018,37(06):181-187. GUO Tianxu, REN Shoumai, BAO Shujing, et al. Adsorption Characteristics and Influence Factors of Middle Jurassic Dameigou Formation Shale in Northern Qaidam Basin.[J].Geological Science and Technology Information,2018,37(06):181-187.
付金华,李士祥,牛小兵,等.鄂尔多斯盆地三叠系长7段页岩油地质特征与勘探实践[J].石油勘探与开发,2020,47(05):870-883. FU Jinhua, LI Shixiang, NIU Xiaobing, et al. Geological Characteristics and Exploration of Shale Oil in Chang 7 Member ofTriassic Yanchang Formation, Ordos Basin, NW China[J]. Petroleum Exploration and Development,2020,47(05):870-883.
付小东,饶丹,秦建中,等.柴达木盆地北缘地区中侏罗统大煤沟组页岩油形成地质条件[J]. 岩性油气藏, 2014, 26(6):20-20. FU Xiaodong, RAO Dan, QIN Jianzhong, et al. Geological Conditions for Shale Oil Forming of Middle Jurassic DameigouFormation in the Northern Margin of Qaidam Basin[J]. Lithologic Reservoirs, 2014, 26(6):20-20.
郝诒纯,茅绍智.微体古生物学教程第二版[M].北京:中国地质大学出版社,1993. HAO Yichun, MAO Shaozhi. Microbody Paleontology Second Edition[M]. Beijing:China University of Geosciences Press,1993.
侯啓东,任收麦,郭天旭,等.塔里木盆地西南坳陷二叠系页岩油气地质条件分析[J].西北地质,2020, 53(1):168-177. HOU Qidong, REN Shoumai, GUO Tianxu, et al. Analysis of Geological Conditions of Permian Shale Oil and Gas in the Southwestern Depression of the Tarim Basin, Northwest China[J] Northwestern Geology,2020, 53(1):168-177.
黄小青,王建君,韩永胜.苏北盆地ZJ探区页岩油藏勘探评价实践与认识[J].西北地质,2020,53(3):252-263. HUANG Xiaoqing, WANG Jianjun, HAN Yongsheng.The Practice and Understanding of the Shale Oil Reservoir in ZJ Exploration Area of Subei Basin[J] Northwestern Geology,2020,53(3):252-263.
金强,朱光有,王娟.咸化湖盆优质烃源岩的形成与分布[J].中国石油大学学报(自然科学版),2008,32(4):19-23. JIN Qiang, ZHU Guangyou, WANG Juan. Deposition and Distribution of High-potential Source Rocks in Saline Lacustrine Environments[J]. Journal of China University of Petroleum (Natural Science Edition),2008,32(4):19-23.
江继纲,彭平安,盛国英.盐湖油气的形成、演化和运移聚集[M]. 广州:广东科技出版社, 2004. JIANG Jigang,PENG Ping'an,SHENG Guoying.Formation, Evolution, Migration and Accumulation of Oil and Gas in Salt Lake[M].Guangzhou:Guangdong Science and Technology Press,2004.
李猛.柴达木盆地北缘侏罗系沉积体系与页岩气富集规律[D]. 北京:中国矿业大学,2014. LI Meng. Sedimentology and Shale Gas Accumulation of the Jurassicin the Northern Qaidam Basin[D]. Beijing:China University of Mining and Technology,2014.
宋明水.济阳坳陷页岩油勘探实践与现状[J].油气地质与采收率,2019,26(1):1-12. SONG Mingshui. Practice and Current Status of Shale Oil Exploration in Jiyang Depression[J]. Petroleum Geology and Recovery Efficiency,2019,26(1):1-12.
孙镇城,乔子真,杨革联,等.不宜笼统地把钙质超微化石都当作海侵或海陆过渡相烃源岩的标志[J].中国石油勘探,2003(02):79-80. SUN Zhengguo, QIAO Zizhen, YANG Gelian, et al. Calcareous Nannofossils Should not be Generally Regarded as a Marker of Transgression or Transition Facies Source Rocks[J].China Petroleum Exploration,2003(02):79-80.
王胜建,包书景,梅建森,等.柴达木盆地北缘柴页1井中侏罗统大煤沟组页岩储层测井评价[J].地质通报,2016,35(2):260-272. WANG Shengjian, BAO Shujing, MEI Jiansen, et al. Shale Petrophysical Evaluation of the Middle Jurassic Dameigou Formation in Chaiye-1 Well, Qaidam Basin[J].Geological Bulletin of China,2016,35(2):260-272.
王晓鹏,李玉宏,张云鹏,等.柴达木盆地鱼卡地区中侏罗统页岩气成藏条件[J].地质通报,2016,35(2):231-241. WANG Xiaopeng, LI Yuhong, ZHANG Yunpeng, et al. Ananalysis of Reservoir Forming Conditions of Shale Gas in Middle Jurassic Strata of Yuqia area, Qaidam Basin[J]. Geological Bulletinof China,2016,35(2):231-241.
王宏语,杨润泽,张峰,等.富含有机质泥页岩岩相表征的研究现状与趋势[J].地质科技情报,2018, 37(02):141-148. WANG Hongyu, YANG Runze, ZHANG Feng, et al. Research Progress and Trend of Organic-Rich Shale Lithofacies Characterization[J].Geological Science and Technology Information,2018, 37(02):141-148.
王慧中,梅洪明.东营凹陷沙三下亚段油页岩中古湖泊学信息[J].同济大学学报(自然科学版),1998(03):315-319. WANG Huizhong, MEI Hongming. Paleolimnological Information from Oil Shale in the Lower Part of Sha 3 Formation,in Dongying Depression[J].Journal of Tongji University (Natural Science edition),1998(03):315-319.
王勇,刘惠民,宋国奇,等.湖相泥页岩中碳酸盐成因及页岩油气地质意义——以东营凹陷沙河街组四段上亚段-沙河街组三段下亚段烃源岩为例[J].石油学报,2017,38(12):1390-1400. WANG Yong, LIU Huimin, SONG Guoqi, et al. Carbonate Genesis and Geological Significance of Shale Hydrocarbon in Lacustrine Facies Mud Shale:A Case Study of Source Rocks in the Upper Submember of the Member 4 and Lower Submember of Member 3 of Shahejie Formation,Dongying Sag[J]. Acta Petrolei Sinica,2017,38(12):1390-1400.
葸克来,李克,操应长,等.鄂尔多斯盆地三叠系延长组长73亚段富有机质页岩纹层组合与页岩油富集模式[J/OL]石油勘探与开发,2020(06):1-12[2020-11-17].Http://kns.cnki.net/kcms/detail//11.2360.TE.202008270.0936.004.html. XI Kelai,LI Ke,CAO Yingchang,et al. Laminae Combination and Shale Oil Enrichment Patterns of Chang 7 Organic-rich Shales in the Triassic Yanchang Formation, Ordos Basin, NW China[J/OL]. Petroleum Exploration and Development,2020(06):1-12[2020-11-17].Http://kns.cnki.net/kcms/detail//11.2360.TE.20208270.0936.004.html.
姚宏鑫,王宗秀,朱随洲,等.柴达木盆地北缘侏罗系沉积层序的构造演化响应[J].西北地质,2017,50(02):16-27. YAO Hongxin, WANG Zongxiu, ZHU Suizhou, et al. Tectonic Evolution Response of Jurassic Sedimentary Sequences in the Northern Margin of Qaidam Basin[J]. Northwestern Geology,2017,50(02):16-27.
袁伟,柳广弟,罗文斌,等.鄂尔多斯盆地长7段富有机质页岩中磷灰石类型及其成因[J].天然气地球科学,2016,27(08):1399-1408. YUAN Wei, LIU Guangdi, LUO Wenbin, et al. Species and Formation Mechanism of Apatite in the 7thMember of Yanchang Formation Organic-rich Shale of Ordos Basin,China[J]. Natural Gas Geoscience,2016,27(08):1399-1408.
邹才能,王岚,白斌,等.页岩油形成机制、地质特征及发展对策[J].石油勘探与开发,2013,40(1):14-26. ZOU Caineng, WANG Lan, BAI Bin, et al. Research Progress of the Enrichment Mechanism of Sedimentary Organics in Lacustrine Basin[J]. Petroleum Exploration and Development,2013,40(1):14-26.
Guo Tianxu,Ren Shoumai,Luo Xiaorong,et al. Accumulation Conditions and Prospective Areas of Shale Gas in the Middle Jurassic Dameigou Formation, Northern Qaidam Basin, Northwest China[J].Geological Journal, 2018(5):1-11.
Hou Yuguang, Wang Furong, He Sheng, et al. Properties and Shale Oil Potential of Saline Lacustrine Shales in the Qianjiang Depression, Jianghan Basin, China[J].Marine and Petroleum Geology, 2017, 86:1173-1190.
Jin Qiang, Zha Ming,Liu Zhen, et al. Geology and Geochemistry of Source Rocks in the Qaidam Basin, NW China.[J]. Journal of Petroleum Geology, 2002,25(2):219-238.
Li Changrong, Pang Xiongqi, Wang Enze, et al. Organic Geochemistry, Hydrocarbon Generation, and Expulsion Characteristics and their Impact on Tight Oil:A Case Study of the Third Member of the Upper PalaeogeneShahejie Formation, Nanpu Sag, Bohai Bay Basin, NE China[J].Geological Journal, 2020, 55(10):6878-6897.
Lin Husen,Yuan Xuanjun,Tao Shizheng, et al. Geochemical Characteristics of the Source Rocks in Mesozoic Yanchang Formation,Central Ordos Basin[J].Journal of Earth Science,2013,24(05):804-814.
Lin Lamei, Zhang Jinchuan, Li Yuxi, et al. The Potential of China's Lacustrine Shale Gas Resources[J]. Energy Exploration & Exploitation, 2013, 31(2):317-336.
Qin Jing, Wang Shuangqing, Hamed Sanei, et al. Revelation of Organic Matter Sources and Sedimentary Environment Characteristics for Shale Gas Formation by Petrographic Analysis of Middle Jurassic Dameigou Formation, Northern Qaidam Basin, China[J].International Journal of Coal Geology,2018,195:373-385.
Wang Yuxuan, Xu Shang, Hao Fang,et al. Geochemical and Petrographic Characteristics of Wufeng-Longmaxi Shales, Jiaoshiba Area, Southwest China:Implication for Organic Matter Differential Accumulation[J]. Marine and Petroleum Geology,2019,102:138-154.
Wang Yuxuan, Xu Shang, Hao Fang,et al. Multiscale Petrographic Heterogeneity and their Implications for the Nanoporous System of the Wufeng-Longmaxi Shales in JiaoshibaArea, Southeast China:Response to Depositional-Diagenetic Process[J].The Geological of Society America Bulletin,2020,132(7-8):1704-1721.
Zhang Jingya, Liu Guangdi, Cao Zhe, et al. Characteristics and Formation Mechanism of Multi-Source Mixed Sedimentary Rocks in a Saline Lake, a Case Study of the Permian Lucaogou Formation in the Jimusaer Sag,Northwest China[J].Marine and Petroleum Geology,2019, 102:704-724.
-
期刊类型引用(2)
1. 郭鹏超，崔向东，董晓东，李金有，韩洪斗，张文伟，刘玉婷，徐玲玲. 陆东凹陷交力格洼陷九佛堂组页岩油赋存状态及孔径下限表征. 东北石油大学学报. 2024(03): 14-22+6 . 
百度学术
2. 石彦强，石雅锟. 地史植物主导净积聚煤. 煤炭科学技术. 2024(12): 224-238 . 百度学术
其他类型引用(3)
计量
- 文章访问数: 1190
- HTML全文浏览量: 2
- PDF下载量: 971
- 被引次数: 5
下载:
