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松辽盆地齐家地区青一段页岩油形成条件

发布时间:2018-05-14 03:15

  本文选题:页岩油 + 齐家地区 ; 参考:《西安石油大学》2015年硕士论文


【摘要】:通过收集松辽盆地齐家地区的地质、地球化学资料、储层资料并结合大量的样品分析测试,对研究区白垩系青山口组青一段页岩油形成条件进行了初步分析,取得了以下认识:青一段泥页岩主要为深湖—半深湖相沉积,几乎全部沉积暗色泥岩;泥页岩的累计厚度主要分布在60~110 m,中部和南部较厚,最厚处大于110m。该段泥页岩具有优质的有机地球化学条件。干酪根类型主要为Ⅰ型和Ⅱ1型;有机质热演化程度在成熟—高成熟之间,Ro主要分布在0.68%~1.3%之间,生油倾向较明显;整个研究区有机质丰度较高,青一段有机碳平均值为2.52%,氯仿沥青“A”平均值为0.3729%,生烃潜量S1+S2平均值为13.61 mg/g。该段泥页岩具有优质的储集条件。青一段泥页岩粘土矿物含量高,总体分布范围为45%~65%,石英、长石、碳酸盐矿物和黄铁矿等矿物含量相对较低;粘土矿物以伊蒙混层和伊利石为主,二者占到粘土矿物总量的80%以上。储层储集空间类型主要为有机质孔、粒间孔、粒内孔和微裂缝,其中发育较为丰富的孔隙类型为粒间孔和有机质孔;孔隙以微孔和中孔为主,孔隙结构良好。综合研究确定研究区的页岩油有利区评价指标,结合此标准,对齐家地区青一段页岩油的有利勘探区域进行了预测,确定了研究区内Ⅰ类和Ⅱ类有利区。
[Abstract]:By collecting geological and geochemical data and reservoir data from Qijia area of Songliao Basin and combining with a large number of sample analysis and testing, the formation conditions of Qingshankou formation in the Cretaceous formation of Qingshankou formation are preliminarily analyzed. The main results are as follows: the shale of Qingyi member is mainly deep lacustrine to semi-deep lacustrine facies, almost all of which are dark mudstone, and the accumulative thickness of mud shale is mainly distributed in 60 ~ 110m, thicker in the middle and south, and the thickest is more than 110m. The shale has excellent organic geochemical conditions. The main types of kerogen are type 鈪,

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