何文渊,蒙启安,张金友
HE Wenyuan,MENG Qi'an,ZHANG Jinyou

• 1:大庆油田有限责任公司
• 2:黑龙江省陆相页岩油重点实验室
• 3:大庆油田有限责任公司勘探开发研究院

摘要(Abstract)：

为明确松辽盆地古龙页岩油的富集规律,进一步指导页岩油的开发部署,利用岩心实验数据及试油成果资料,从页岩油形成的烃源岩发育、热演化程度、储集空间等方面,对古龙页岩油富集主控因素进行系统分析,并在此基础上制定页岩油富集层、富集区的划分标准,明确了页岩油的空间分布规律。结果表明,古龙页岩油主要有4个富集主控因素:(1)规模发育的厚层高有机质页岩是页岩油富集的物质基础;(2)热演化程度是控制页岩油富集的关键;(3)大量发育的页理缝和基质孔隙是页岩油富集的重要保障;(4)异常高压是页岩油富集高产的必要条件。综合分析七性参数和采油强度的关系,明确游离烃(S_1)、总有机碳(w(TOC))、成熟度(R_o)以及总孔隙度是页岩油富集高产的核心参数,以此为基础建立了古龙页岩油富集区和富集层的分类评价标准,优选齐家—古龙地区为页岩油富集的一类区。研究成果为古龙页岩油的勘探开发提供了理论指导。
In order to study the enrichment law of Gulong shale oil in Songliao Basin and further guide development deployment of shale oil, this paper uses core experiment data and oil test data to systematically analyze main controlling factors of Gulong shale oil enrichment in terms of source rock development, thermal evolution degree, reservoir space and formation pressure. On this basis, classification criteria for shale oil enrichment layers and enrichment areas are established, and spatial distribution of shale oil is clarified. The study results show that there are 4 main factors controlling Gulong shale oil enrichment:(1)Large-scale developed thick shale with high organic matter content is the material basis for shale oil enrichment;(2)Thermal evolution is the key factor to control shale oil enrichment;(3)Large amount of well-developed lamellation fractures and matrix pores are important guarantee for shale oil enrichment;(4)Abnormal high pressure is a necessary condition for shale oil enrichment and high production. Relationships between seven-property parameters and oil production intensity are analyzed comprehensively. It is determined that free hydrocarbon(S_1), organic carbon content w(TOC), maturity(R_o) and total porosity are key parameters of shale oil enrichment and high production. Based on above study, classification and evaluation criteria are established for Gulong shale oil enrichment areas and layers. Qijia-Gulong area is selected as Class 1 shale oil enrichment area. The research achievement provides theoretical guidance for exploration and development of Gulong shale oil.

关键词(KeyWords)： 松辽盆地;古龙页岩油;富集主控因素;分类评价;富集区
Songliao Basin;Gulong shale oil;main controlling factors of enrichment;classification and evaluation;enriched area

Abstract:

Keywords:

基金项目(Foundation): 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)

作者(Author): 何文渊,蒙启安,张金友
HE Wenyuan,MENG Qi'an,ZHANG Jinyou

DOI: 10.19597/J.ISSN.1000-3754.202107045

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