石油学报 ›› 2023, Vol. 44 ›› Issue (12): 2091-2103,2178.DOI: 10.7623/syxb202312006

• 地质勘探 • 上一篇    下一篇

松辽盆地北部油气勘探新领域、新类型及资源潜力

王小军1,2,3, 白雪峰3,4, 陆加敏3,4, 金之钧5, 王贵文1, 匡立春1, 李军辉3,4, 李敬生3,4, 张金友3,4, 孙立东3,4, 吴景峰3,4, 孙海雷3,4   

  1. 1. 中国石油大学(北京)地球科学学院 北京 102249;
    2. 大庆油田有限责任公司 黑龙江大庆 163002;
    3. 多资源协同陆相页岩油绿色开采全国重点实验室 黑龙江大庆 163712;
    4. 大庆油田有限责任公司勘探开发研究院 黑龙江大庆 163712;
    5. 北京大学能源研究院 北京 100871
  • 收稿日期:2023-08-30 修回日期:2023-10-27 出版日期:2023-12-25 发布日期:2024-01-06
  • 通讯作者: 吴景峰,男,1983年12月生,2021年获东北石油大学地质资源与地质工程专业博士学位,现为大庆油田有限责任公司勘探开发研究院高级工程师,从事油气勘探规划部署工作。Email:wujingfeng007@petrochina.com.cn
  • 作者简介:王小军,男,1973年3月生,1997年获石油大学学士学位,现为大庆油田有限责任公司副总经理、总地质师、教授级高级工程师、中国石油大学(北京)博士研究生,主要从事油气勘探与管理等工作。Email:wxiaojun@petrochina.com.cn
  • 基金资助:
    中国石油天然气股份有限公司科技重大专项(2016EG0201)和黑龙江省"百千万"工程科技重大专项"松辽盆地北部古龙页岩油成藏条件及甜点分布规律研究"(SC2020ZX05A0023)资助。

New fields,new types and resource potentials of oil-gas exploration in northern Songliao Basin

Wang Xiaojun1,2,3, Bai Xuefeng3,4, Lu Jiamin3,4, Jin Zhijun5, Wang Guiwen1, Kuang Lichun1, Li Junhui3,4, Li Jingsheng3,4, Zhang Jinyou3,4, Sun Lidong3,4, Wu Jingfeng3,4, Sun Hailei3,4   

  1. 1. College of Geosciences, China University of Petroleum(Beijing), Beijing 102249, China;
    2. Daqing Oilfield Limited Company, Heilongjiang Daqing 163002, China;
    3. National Key Laboratory for Green Mining of Multi-resource Collabrative Continental Shale Oil, Heilongjiang Daqing 163712, China;
    4. Exploration and Development Research Institute, Daqing Oilfield Limited Company, Heilongjiang Daqing 163712, China;
    5. Institute of Energy, Peking University, Beijing 100871, China
  • Received:2023-08-30 Revised:2023-10-27 Online:2023-12-25 Published:2024-01-06

摘要: 大庆油田历经60多年发展,常规油气资源已步入勘探后期,新领域、新类型的非常规油气资源成为油田高质量发展的重要接续。松辽盆地北部主要发育坳陷期青山口组和断陷期沙河子组2套烃源岩,结合非常规油气的成藏条件与勘探潜力,目前形成了一系列新领域、新类型油气勘探的创新性理论与技术成果。主要表现为:①创新了页岩油原位成藏理论,认为"厚层高含氢指数页岩、大规模有机孔隙、超低孔喉自封闭"是页岩油富集的主控因素,预测松辽盆地北部页岩油资源量为151×108t,页岩油是大庆油田大规模增储上产的核心领域;②建立了源下致密油断裂带控藏新模式,指出"青山口组源岩生烃增压、油气沿断裂向下倒灌"的致密油富集新认识,预测致密油资源量为21.85×108t,致密油是大庆油田规模增储的重要保障;③提出了以超压为核心的致密气富集的新认识,建立了"源内生烃增压、两侧扇体聚集"的沙河子组超压致密气成藏新模式,初步评价致密气资源量为10 960×108m3,致密 气是大庆油田天然气规模增储的现实领域。松辽盆地北部新领域、新类型的油气资源潜力大,是大庆油田保持原油稳产3 000× 104t的重要资源基础;其油气勘探经验可为其他盆地提供借鉴和启示。

关键词: 松辽盆地北部, 新领域, 新类型, 页岩油, 致密油, 致密气

Abstract: After more than 60 years of development, Daqing oilfield has entered the late stage of exploration for conventional oil-gas resources. New fields and new types of unconventional hydrocarbon resources have become vital replacement energies supporting the high-quality development of the oilfield. The northern Songliao Basin mainly develops two sets of source rocks, i.e. Qingshankou Formation during the post-rifting period and Shahezi Formation during the syn-rifting period. In combination with the accumulation conditions and exploration potential of unconventional oil and gas, a series of innovative theories and technical achievements in new fields and new types of oil-gas exploration have been gained as below. (1) Based on innovation in the theory of in-situ shale oil accumulation, it is believed that thick shale with high hydrogen index, large-scale organic pores, and self-sealing ultra-low pore throat are the main controlling factors for shale oil enrichment. It is predicted that the shale oil resources in northern Songliao Basin can amount to 151×108t and shale oil is the core field for largely increasing reserves and production in Daqing oilfield. (2) A new fault-controlled accumulation model of tight oil reservoir under source has been established, pointing out a new understanding of tight oil enrichment of "hydrocarbon-generating overpressure in Qingshankou Formation, downward hydrocarbon migration along the fault". The amount of tight oil resources is predicted to be 21.85×108t, and tight oil provides a crucial guarantee for largely increasing reserves and production in Daqing oilfield. (3) A new understanding of tight gas enrichment with a focus on overpressure has been proposed herein, and a new accumulation model for overpressured tight gas reservoirs in Shahezi Formation has been also established, characterized by "hydrocarbon-generating overpressure in source, oil-gas accumulation in sedimentary fans on both sides". The tight gas resources are preliminary evaluated to be 10 960×108m3, indicating tight gas is a real field for largely increasing the reserves of natural gas in Daqing oilfield. The new fields, new types of oil and gas in northern Songliao Basin have great resource potential, providing an important resource base for a stable crude oil production of 3 000×104t in Daqing oilfield. The oil-gas exploration experience can provide a reference and insights for other basins.

Key words: northern Songliao Basin, new field, new type, shale oil, tight oil, tight gas

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