论文部分内容阅读
以济阳坳陷新近系馆陶组曲流河河道砂体为例,对不同砂组及其内部不同砂体油气选择性充注的原因进行了探讨。断层的活动性是油气纵向输导的主要影响因素,主油源断层和次油源断层控制油气平面分布范围,区域性的储盖组合决定了油气纵向分布层段(砂组),断层和储盖组合是造成不同含油砂组平面和纵向分布差异性的主要因素。河道砂体与断层、构造等的匹配关系是同一区带同一砂组内不同河道砂体油气选择性充注的主要原因。河道砂体的物性条件对油气的选择性充注也具有重要的控制作用,一般在相同的成藏条件下大型河道的物性条件较好,有利于油气聚集成藏。
Taking the Songliaohe channel sand body of the Neogene Guantao Formation in the Jiyang Depression as an example, the reasons for the selective filling of oil and gas in different sand bodies and their different sand bodies were discussed. The activity of faults is the main influence factor of longitudinal oil and gas transportation. The main oil source fault and the secondary oil source fault control the oil and gas plane distribution range. The regional reservoir-cap combination determines the vertical distribution of oil and gas (sand group), fault and reservoir Cap assemblage is the main factor that causes the difference in plane and vertical distribution of different oil-bearing sands. The matching relationship between channel sand bodies and faults and structures is the main reason for the selective charge of oil and gas in different channel sandbodies within the same zone and sand group. The physical properties of channel sand bodies also play an important role in controlling the selective filling of oil and gas. Generally, the physical conditions of large channels are good under the same reservoir forming conditions, which are favorable for hydrocarbon accumulation and accumulation.