松辽盆地古龙页岩油地质特征及关键科学问题探索
何文渊 , 柳波 , 张金友 , 白龙辉 , 田善思 , 迟亚奥
地球科学 ›› 2023, Vol. 48 ›› Issue (01) : 49 -62.
松辽盆地古龙页岩油地质特征及关键科学问题探索
Geological Characteristics and Key Scientific and Technological Problems of Gulong Shale Oil in Songliao Basin
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截止目前古龙凹陷页岩油的开发已见成效,总结古龙页岩油富集的地质条件对下一步的勘探开发工作尤为重要.对当前古龙页岩油基础地质特征及勘探成果进行了梳理总结,归纳了规模见产可能面临的科学技术问题,并探讨了下一步科研攻关方向.松辽盆地北部青山口组一段页岩具有机质丰度高(TOC为2.0%~3.0%,平均2.7%)、类型好(以I型干酪根为主,生烃母质为层状藻类体)、成熟度高(R o为1.20%~1.67%)、黏土矿物含量高(大于35%)等典型特征.受益于较高的地温梯度,古龙凹陷青一段有机质达到高成熟阶段,油质轻(地面密度小于0.8 g/cm3)、气油比高(大于50 m3/m3),具备高熟页岩油规模开发潜力.页岩油甜点评价标准的厘定、单井EUR预测存在不确定性及规模效益开发配套技术欠缺是古龙页岩油勘探开发目前面临的主要挑战.黏土矿物对油水赋存状态乃至含油饱和度的影响、复合润湿性对压裂液渗吸置换效率的控制等陆相页岩油特有机理研究的突破,将会推动国家级开发示范区产油目标的快速实现,并有望在轻质油带开发基础上向稀油带扩大古龙页岩油勘探开发成果.
松辽盆地 / 青山口组 / 陆相页岩油 / 规模开发 / 轻质油 / 石油地质学
Songliao Basin / Qingshankou Formation / continental shale oil / scale development / light oil / petroleum geology
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国家自然科学基金面上项目(41972156)
黑龙江省“百千万”工程科技重大专项(2020ZX05A01)
中国石油天然气股份有限公司重大科技专项(2021ZZ10)
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