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朝长地区扶杨油层与上覆青山口组一段烃源岩层呈“上生下储”式生储盖组合,油气运移呈现2个阶段,即首先在生烃凹陷带由于压差作用发生垂向运移,然后在储层内由于势差作用主要发生侧向运移。研究表明,三肇凹陷和王府凹陷持续埋深区,在嫩江期末开始形成了青一段地层超压带,青一段排出的油气在超压作用下,通过密集断层垂向运移至下伏的扶杨油层低压砂岩储层内;垂向运移至扶杨油层的油气,进入物性好、厚度大且连续性好的砂体,在势差作用下主要发生侧向运移,最终在运移路径上的圈闭中聚集成藏。
The source rock strata of Fuyang Oil Layer and the Upper Qingshankou Formation in the North Face of Changbei Region are in combination with the “generative reservoir-caprock”. The migration of oil and gas shows two stages, that is, Vertical migration occurs, and then lateral migration occurs mainly in the reservoir due to the potential difference. The study shows that the Sanzhao sag and the Wangfu sag continued to be buried in the deep zone. At the end of the Nen River, an overpressured zone of the first Paleogene strata formed. Over time, the drained oil from the Qing stage has migrated vertically to the underlying subfloor by intensive faults And the oil and gas migrated vertically to the Fuyang oil layer into the sand body with good physical properties, large thickness and good continuity. The sand bodies mainly occur lateral displacement under the potential difference, and finally migrate to the transport path Accumulation of accumulation on the trap.