松辽盆地古龙页岩油储层特征及分类评价  

Characteristics and classification evaluation of Gulong shale oil reservoir in Songliao Basin

作　　者：王凤兰[1,2] 付志国 王建凯[1,2] 唐振国 蒋瑞刚 WANG Fenglan;FU Zhiguo;WANG Jiankai;TANG Zhenguo;JIANG Ruigang(Exploration and Development Research Institute of Daqing Oilfield Co Ltd,Daqing 163712,China;Heilongjiang Provincial Key Laboratory of Continental Shale Oil,Daqing 163712,China)

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712 [2]黑龙江省陆相页岩油重点实验室,黑龙江大庆163712

出　　处：《大庆石油地质与开发》2021年第5期144-156,共13页Petroleum Geology & Oilfield Development in Daqing

基　　金：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)。

摘　　要：松辽盆地北部古龙页岩油资源丰富,具有独特的地质特征,常规的储层特征研究不能满足储层精细评价的需求。为深化古龙页岩油储层特征认识,通过岩心观察、实验分析、测井解释等手段,开展了古龙页岩油储层岩性、岩相、电性、物性、含油性、烃源岩特性、脆性及地应力各向异性等特征研究。结果表明:古龙页岩以层状、纹层状为主,具有储集性好、含油丰富、有机质丰度和热演化程度高、脆性指数较高、水平应力差较小等特点;根据储层特征研究成果,初步建立了古龙页岩油储层分类评价标准,将储层分为3类;在此基础上,指导完成了4个先导试验井组目的层段和水平井目标靶层优选,设计水平井50口。研究成果可为下步古龙页岩油试验区水平井目标靶层优选和井位设计提供可靠的地质依据。Gulong shale in northern Songliao basin has rich oil resource with unique geological characteristics,and conventional reservoir characteristics research cannot meet the needs of detailed reservoir evaluation.In order to deepen the understanding of Gulong shale oil reservoir characteristics,study on lithology,lithofacies,electrical property,physical property,oil-bearing property,source rock property,brittleness and in-situ stress anisotropy are performed through core observation,experimental analysis and logging interpretation.The results show that Gulong shale oil reservoirs are mainly layered and laminar,characterized by high reservoir quality,abundant oil,high organic matter and thermal evolution degree,high brittleness index and small horizontal stress difference.According to the research results of reservoir characteristics,classification and evaluation criteria of Gulong shale oil reservoirs are preliminarily established,and the reservoirs are divided into 3 classes.This research guided optimizing target intervals of 4 pilot test well patterns and target zones of horizontal wells,with 50 horizontal wells designed and deployed.The research results can provide reliable geological basis for further target layer optimization and well location design and deployment of horizontal wells in Gulong shale oil test area.

关 键 词：松辽盆地 古龙页岩油 储层特征 分类评价 富集层 目标靶层 

分 类 号：I22.2[文学—中国文学]