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引用本文:方欣欣,郭迎春,王朋,王鹏威,郭继刚. 致密油成藏研究进展与待解决的重要科学问题[J]. 中国地质, 2020, 47(1): 43-56.
FANG Xinxin,GUO Yingchun,WANG Peng,WANG Pengwei,GUO Jigang. The progress of research on tight oil accumulation and several scientific issues requiring further study[J]. Geology in China, 2020, 47(1): 43-56(in Chinese with English abstract).
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致密油成藏研究进展与待解决的重要科学问题
方欣欣1,2, 郭迎春1,2, 王朋3, 王鹏威4, 郭继刚5
1.中国地质科学院地质力学研究所, 北京 100081;2.自然资源部古地磁与古构造重建重点实验室, 北京 100081;3.中国科学院广州地球化学研究所, 广东 广州 510640;4.中石化勘探开发研究院, 北京 100083;5.自然资源部油气资源战略研究中心, 北京 100034
摘要:
致密油是当前非常规油气勘探中的热点和最现实的领域之一,总结成藏地质研究进展并明确需要深入研究的科学问题对于完善致密油地质理论具有重要意义。当前致密油地质研究进展表现在以下几个方面:①总结了致密油三大形成条件和六项基本特征及中国陆相致密油与美国海相致密油的区别;②利用先进和高精度的储层分析测试技术对致密油储层孔-喉-缝网络体系进行了表征,并初步研究了致密油的赋存状态;③从充注动力、充注下限、运聚机理和富集模式等方面对致密油成藏机理进行了深入研究。在对研究现状总结的基础上提出当前致密油成藏研究中存在的重要科学问题有:①致密油储层微纳米尺度非均质性全息定量表征及其对致密油运聚的影响;②致密油源储结构的成因机制及其对致密油成藏、富集的控制作用;③致密油赋存状态的影响因素、转化条件及不同赋存状态/空间的相对贡献;④混合沉积与致密油形成的内在联系;⑤致密油成藏要素的综合研究与成藏机理及成藏全过程的研究。这些问题的解决将是对致密油地质研究的重要补充。
关键词:  致密油  储层表征  成藏机理  非均质性  源储结构  赋存状态  混合沉积  油气勘查工程
DOI:10.12029/gc20200104
分类号:TE122
基金项目:国家自然科学基金(41602152)资助。
The progress of research on tight oil accumulation and several scientific issues requiring further study
FANG Xinxin1,2, GUO Yingchun1,2, WANG Peng3, WANG Pengwei4, GUO Jigang5
1.Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China;2.Key Laboratory of Paleomagnetism and Tectonic Reconstruction, Ministry of Natural Resources, Beijing 100081, China;3.Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, Guangdong, China;4.Research Institute of Petroleum Exploration & Production, SINOPEC, Beijing 100083, China;5.Strategic Research Center of Oil and Gas Resources, Ministry of Natural Resources, Beijing 100034, China
Abstract:
Unconventional tight oil reservoirs, a lightspot in the present unconventional oil and gas exploration, have emerged as a significant source of oil supply in the world. The geological research, theoretical promoting, and present significant issues concerning tight oil will supply and prefect geological theory on unconventional hydrocarbon. Currently, the development of geological research on tight oil can be concluded as follows:① Three main formation conditions and six basic characteristics about tight oil as well as the differences between continental tight oil in China and marine tight oil in the USA have been summarized. ② Pore-throat-fracture network in the tight-oil reservoir has been characterized with advanced and high-precision analysis and testing technology, the formation of tight oil being the primary research object. ③ The accumulation mechanism of tight oil has been deeply studied, which includes charge dynamics, the threshold of charging, migration mechanism, accumulating model, etc. Based on the research status about tight oil, this paper puts forward several important questions about tight oil:① Holographic quantitative heterogeneity characterization on the tight oil reservoir at a micro-nano scale and its effect on tight oil migration and accumulation; ② the genesis of source-reservoir configuration and its control on tight oil accumulation and enrichment; ③ the influence factors and transformation conditions of the occurrence of tight oil, and the relative contribution of different kinds of occurrence status and space; ④ the internal relationship between the mixed sedimentary system in saline lacustrine basins and the formation of tight oil; ⑤ a comprehensive study of the tight oil accumulation factors, and the accumulation mechanism and its whole process. The answers of these questions will play a significant role in geological research on tight oil.
Key words:  tight oil  reservoir characterization  accumulation mechanism  heterogeneity  source-reservoir configuration  occurrence state  mixed sedimentary system  oil-gas exploration engineering