林铁锋,马生明,李昕,刘鑫,张鸿,张玉鹏
LIN Tiefeng,MA Shengming,LI Xin,LIU Xin,ZHANG Hong,ZHANG Yupeng

• 1:多资源协同陆相页岩油绿色开采全国重点实验室
• 2:中国石油大庆油田有限责任公司勘探开发研究院
• 3:中国石油青海油田公司勘探开发研究院
• 4:中国石油大庆油田有限责任公司页岩油勘探开发指挥部

摘要(Abstract)：

松辽盆地北部白垩系低熟页岩油资源潜力巨大，为了落实松辽盆地北部低熟页岩油勘探潜力，明确甜点层段和有利目标区，搞清低熟页岩油甜点特征及分布规律具有重要意义。以松辽盆地北部嫩江组一段（嫩一段）、嫩江组二段（嫩二段）和青山口组一段（青一段）为目标层位，基于测井解释和岩心描述等资料，结合X-衍射全岩矿物分析、激光共聚焦、岩石热解和总有机碳含量（w(TOC)）测定等实验数据，开展松辽盆地北部低熟页岩油地质特征和甜点分布规律研究。结果表明：松辽盆地北部低熟页岩油甜点层与自然伽马、电阻率曲线具有较好的正相关关系，而与声波时差和密度测井曲线的响应关系不清晰；嫩江组与青山口组甜点层岩性为黑色、灰黑色页岩，主要由石英、长石和黏土矿物构成，其质量分数大于80%；嫩一段和嫩二段甜点层w(TOC)平均为5.17%，青一段甜点层w(TOC)平均为4.79%，以Ⅰ型干酪根为主，处于有利区生油区，具有良好的生烃转化潜力；嫩一段和嫩二段甜点层主要分布在古龙凹陷和三肇凹陷一带，而青一段甜点层主要分布在三肇凹陷东部、朝阳沟阶地等地区。研究成果可为松辽盆地北部白垩系低熟页岩油的下步勘探工作提供一定的理论指导。
Low-maturity Cretaceous shale oil in northern Songliao Basin exhibits enormous resource potential. To assess its exploration prospects and to identify sweet spot layers and favorable target zones, it is of significant importance to clarify the characteristics and distribution patterns of low-maturity shale oil sweet spots. Taking the first member of Nenjiang Formation(Nen-1 Member), the second member of Nenjiang Formation(Nen-2 Member) and the first member of Qingshankou Formation(Qing-1 Member) in northern Songliao Basin as target intervals, based on the data from logging interpretation and core characterization, geological characteristics and sweet-spots distribution patterns of low-maturity shale oil are studied by combining experimental data from X-ray diffraction whole-rock mineral analysis, laser confocal microscopy, rock pyrolysis and total organic carbon(w(TOC)) content measurements. The results indicate that, sweet spot layers of low-maturity shale oil in northern Songliao Basin have positive correlation with natural gamma ray and resistivity curves, but ambiguous responses with acoustic time difference and density curves. The lithology of sweet spot layers in Nenjiang Formation and Qingshankou Formation is black and gray-black shale, dominated by quartz, feldspar and clay minerals, with mass fraction of >80%. Average w(TOC) of sweet spot layers in Nen-1 and Nen-2 members is 5.17%, while that in Qing-1 Member is 4.79%, dominated by type I kerogen,which is in favorable hydrocarbon-generating areas and has good potential for hydrocarbon generation. Geographically, sweet spot layers in Nen-1 and Nen-2 members are primarily distributed in Gulong Sag and Sanzhao Sag, while those in Qing-1 Member are mainly distributed in eastern Sanzhao Sag and Chaoyanggou Terrace. The research provides theoretical guidance for further exploration of low-maturity Cretaceous shale oil in northern Songliao Basin.

关键词(KeyWords)： 页岩油;低成熟度;甜点;分布特征;资源潜力;松辽盆地
shale oil;low maturity;sweet spots;distribution characteristics;resource potential;Songliao Basin

Abstract:

Keywords:

基金项目(Foundation): 国家科技重大专项“松辽盆地白垩系陆相页岩油勘探开发技术与集成示范”（2024ZD1404900）

作者(Author): 林铁锋,马生明,李昕,刘鑫,张鸿,张玉鹏
LIN Tiefeng,MA Shengming,LI Xin,LIU Xin,ZHANG Hong,ZHANG Yupeng

DOI: 10.19597/J.ISSN.1000-3754.202509028

参考文献(References)：

• [1]赵文智，赵阳升，李根生，等.陆相中低熟页岩油富集与原位转化科学问题及关键技术[J].中国科学基金，2023,37(2):276-284.ZHAO Wenzhi,ZHAO Yangsheng,LI Gensheng,et al. Scientific problems and key technologies of enrichment and in-situ transformation of mid-low mature shale oil in continental facies[J]. Bulletin of National Natural Science Foundation of China,2023,37(2):276-284.
• [2] ZOU C N,MA F,PAN S Q,et al. Formation and distribution potential of global shale oil and the developments of continental shale oil theory and technology in China[J]. Earth Science Frontiers,2023,30(1):128-142.
• [3]孙友宏，郭威，李强，等.中国油页岩原位转化技术现状与展望[J].石油科学通报，2023,8(4):475-490.SUN Youhong,GUO Wei,LI Qiang,et al. Current status and prospects of oil shale in-situ conversion technology in China[J].Petroleum Science Bulletin,2023,8(4):475-490.
• [4] HE W Y,MENG Q A,LIN T F,et al. Evolution features of insitu permeability of low-maturity shale with the increasing temperature,Cretaceous Nenjiang Formation,northern Songliao Basin,NE China[J]. Petroleum Exploration and Development,2022,49(3):516-529.
• [5]王瑞，刘鑫，杨倩，等.松辽盆地嫩江组一、二段氢同位素特征、古气候与有机质富集[J].大庆石油地质与开发，2023,42(5):1-8.WANG Rui, LIU Xin, YANG Qian, et al. Hydrogen isotope characteristics, paleoclimate and organic matter enrichment of Nen-1 and Nen-2 members of Nenjiang Formation in Songliao Basin[J]. Petroleum Geology&Oilfield Development in Daqing,2023,42(5):1-8.
• [6]杨大明.松辽盆地嫩一段及嫩二段高频湖平面变化重建及其受控因素[D].北京：中国地质大学（北京），2018.YANG Daming. Reconstruction of high-frequency lake surface changes in the Nen 1 member and Nen 2 member of the Songliao Basin and its controlling factors[D]. Beijing:China University of Geosciences(Beijing),2018.
• [7]杨涵菲.晚白垩世松辽盆地嫩江组米兰科维奇旋回的识别及其古气候响应[D].北京：中国地质大学（北京），2018.YANG Hanfei. Identification of Milankovitch cycles in the Nenjiang Formation of the Late Cretaceous Songliao Basin and its paleoclimate response[D]. Beijing:China University of Geosciences(Beijing),2018.
• [8]蒙启安，林铁锋，张金友，等.页岩油原位成藏过程及油藏特征：以松辽盆地古龙页岩油为例[J].大庆石油地质与开发，2022,41(3):24-37.MENG Qi’an,LIN Tiefeng,ZHANG Jinyou,et al.In-situ accumulation process and reservoir characteristics of shale oil:A case study of Gulong shale oil in Songliao Basin[J]. Petroleum Geology&Oilfield Development in Daqing,2022,41(3):24-37.
• [9] BAI X F,LI J H,LIU X,et al. Evolution of the anisotropic thermophysical performance for low-maturity oil shales at an elevated temperature and its implications for restoring oil development[J]. Energy&Fuels,2024,38(16):15216-15224.
• [10]程银行.松辽盆地晚白垩世以来沉积充填及构造演化[D].北京：中国地质大学（北京），2019.CHENG Yinhang. Sedimentary filling and structural evolution in the Songliao Basin since the Late Cretaceous[D]. Beijing:China University of Geosciences(Beijing), 2019.
• [11]林铁锋.松辽盆地晚期构造反转与油气成藏效应[D].北京：中国地质大学（北京），2019.LIN Tiefeng. Late-stage tectonic inversion and hydrocarbon accumulation effect in the Songliao Basin[D]. Beijing:China University of Geosciences(Beijing),2019.
• [12]胡望水，吕炳全，张文军，等.松辽盆地构造演化及成盆动力学探讨[J].地质科学，2005,40(1):16-31.HU Wangshui, L??Bingquan, ZHANG Wenjun, et al. An approach to tectonic evolution and dynamics of the Songliao Basin[J]. Chinese Journal of Geology,2005,40(1):16-31.
• [13]靳雪燕，梁江平，黄清华，等.长垣南部—古龙地区嫩江组二、三段等时地层格架及其与砂岩展布关系[J].大庆石油地质与开发，2014,33(3):20-24.JIN Xueyan,LIANG Jiangping,HUANG Qinghua,et al. Relationship between the isochronous stratigraphic framework and sandstone spread for Members 2&3 of Nenjiang Formation in South Placanticline and Gulong area[J]. Petroleum Geology&Oilfield Development in Daqing,2014,33(3):20-24.
• [14]杨金岳.中国东北松辽盆地上白垩统嫩江组有鳞类与喙头类化石研究[D].长春：吉林大学，2023.YANG Jinyue. Research on the fossils of bony and beaked species in the Nenjiang Formation of the Lower Cretaceous in the Songliao Basin of Northeast China[D]. Changchun:Jilin University,2023.
• [15]于楷丰.松辽盆地晚白垩世嫩江组兽脚类恐龙化石首次发现及研究[D].长春：吉林大学，2023.YU Kaifeng. First discovery of theropod fossils from the Late Cretaceous Nenjiang Formation in the Songliao Basin[D]. Changchun:Jilin University,2023.
• [16]朱建伟，赵刚，刘博，等.油页岩测井识别技术及应用[J].吉林大学学报（地球科学版），2012,42(2):289-295.ZHU Jianwei,ZHAO Gang,LIU Bo,et al. Identification technology and its application of well-logging about oil shale[J].Journal of Jilin University(Earth Science Edition), 2012, 42(2):289-295.
• [17]梁浩然，牛前，徐芳艮，等.湖相烃源岩有机碳含量测井预测：以渤海南部为例[J].天然气地球科学，2024,35(3):518-528.LIANG Haoran,NIU Qian,XU Fanggen,et al. Prediction of total organic carbon content in lacustrine source rock by using well logs:Case study of southern Bohai Sea[J].Natural Gas Geoscience,2024,35(3):518-528.
• [18] LI Y J,WU T H,ZHAO J L,et al. Thermal evolution of organic matter in low-maturity shale:A multimodal nanoscale investigation[J]. Energy&Fuels,2025,39(16):7739-7750.
• [19]霍萍萍，范柏江，王妍妍，等.鄂尔多斯中部长7段中等热演化程度页岩气地球化学特征[J].特种油气藏，2021,28(2):49-56.HUO Pingping,FAN Bojiang,WANG Yanyan,et al. Geochemical characteristics of shale gas with moderate thermal evolution in Chang 7 Member ,central Ordos Basin[J]. Special Oil&Gas Reservoirs,2021,28(2):49-56.
• [20]贾建亮.基于地球化学-地球物理的松辽盆地上白垩统油页岩识别与资源评价[D].长春：吉林大学，2012.JIA Jianliang. Research on the recognition and resource evaluation of the Upper Cretaceous oil shale based on geochemistry-geophysics technique in the Songliao Basin(NE,China)[D].Changchun:Jinlin University,2012.
• [21]霍秋立，曾花森，张晓畅，等.松辽盆地古龙页岩有机质特征与页岩油形成演化[J].大庆石油地质与开发，2020,39(3):86-96.HUO Qiuli,ZENG Huasen,ZHANG Xiaochang,et al. Organic matter characteristics and shale oil formation of Gulong shale in Songliao Basin[J]. Petroleum Geology&Oilfield Development in Daqing,2020,39(3):86-96.