论文部分内容阅读
松辽盆地三肇凹陷青一段泥岩是扶杨油层的主要油源岩，在凹陷中部和边部分别以裂隙式和孔隙式排烃。由于地质条件的空间匹配关系不同，产生了３种石油运移方式。垂向运移方式：运移方向与断裂走向、砂体展布方向垂直，侧向运移受阻，石油多呈原地生储特征，如榆树林地区原油；中距离侧向运移方式：运移方向与断裂或砂体两者之一的展布方向垂直或斜交，侧向运移受到一定阻挡，运移距离不大，如朝阳沟地区和太平川地区原油；长距离侧向运移方式：运移方向与断裂走向、砂体展布方向一致，极有利于油气长距离侧向运移，如肇州地区和肇源地区原油。长距离侧向运移可以形成强大的油气运移流，能抵挡地层的吸附，遇到圈闭则可聚集形成油气田。长距离侧向运移所要求的地质条件是必须具备充足的油源、有较好的疏导层和稳定的良好盖层。图２参４（梁大新摘
The Qingyi mudstone in the Sanzhao depression, Songliao Basin, is the main oil source rock in the Fuyang oil layer. Both fractured and pore-type hydrocarbons are expelled in the central and lateral parts of the depression. Due to the different spatial matching of geological conditions, three types of oil migration have been produced. Vertical migration mode: migration direction and fault trend, vertical distribution of sand body, lateral migration blocked, petroleum mostly in-situ reservoir characteristics, such as Yushulin area crude oil; mid-range lateral migration mode The migration direction is perpendicular or oblique to the spreading direction of either the fault or the sand body. The lateral migration is blocked to a certain extent and the migration distance is small, for example, the crude oil in the Chaoyanggou and Taipingchuan areas; long-distance lateral migration Ways: The direction of migration and the trend of faults are consistent with the distribution of sand bodies, which is very beneficial to the long-term lateral migration of oil and gas, such as crude oil in Zhaozhou and Zhaoyuan areas. Long-distance lateral migration can form a strong migration of oil and gas, to resist the adsorption layer, encountered traps can be gathered to form oil and gas fields. The geological conditions required for long-range lateral migration are to have sufficient oil source, better drainage and stable good capping. Figure 2 Senate 4 (Liang Daxin pick