中文摘要：

在低渗透的沙岩的烃资源是很丰富的并且是广泛地分布式的。包括一条明确的陷井边界或 caprock 的缺乏，低渗透的水库表演几唯一的特征限制了快活效果，复杂 oil-gas-water 分发没有明显的 oil-gas-water 接口，并且相对低的油(气体) 浸透。在低渗透的沙岩(代替水的油) 基于油累积的模拟实验，我们学习移植和 non-Darcy 油的累积特征流动，并且讨论值和是在低渗透的沙岩描绘油移植和累积的一个关键参数的相对渗透的影响因素。结果显示那：1 ) 在低渗透的沙岩的油移植(代替水的油) 显示出 non-Darcy 过滤特征，并且在油移植和累积期间有一个阀值压力坡度，它与渗透和明显的流动性有好否定关联；2 ) 与液体粘性的渗透和明显的流动性和增加的减少，过滤曲线接近压力坡度轴和阀值压力坡度增加。当明显的流动性是超过 1.0 时，，过滤曲线看修改 Darcy 流动特征明显的流动性是否是不到 1.0，过滤曲线是一条 concaveup non-Darcy 过滤曲线；3 ) 油水二阶段的相对渗透被核心渗透，液体粘性，明显的流动性，和注射开车力量影响；4 ) 低渗透的沙岩水库的油浸透主要在 35%60% 以内，并且油浸透也与渗透和明显的流动性有好积极关联。

英文摘要：

Hydrocarbon resources in low-permeability sandstones are very abundant and are extensively distributed. Low-permeability reservoirs show several unique characteristics, including lack of a definite trap boundary or caprock, limited buoyancy effect, complex oil-gas-water distribution, without obvious oil-gas-water interfaces, and relatively low oil （gas） saturation. Based on the simulation experiments of oil accumulation in low-permeability sandstone （oil displacing water）, we study the migration and accumulation characteristics of non-Darcy oil flow, and discuss the values and influencing factors of relative permeability which is a key parameter characterizing oil migration and accumulation in low-permeability sandstone. The results indicate that： 1） Oil migration （oil displacing water） in low- permeability sandstone shows non-Darcy percolation characteristics, and there is a threshold pressure gradient during oil migration and accumulation, which has a good negative correlation with permeability and apparent fluidity; 2） With decrease of permeability and apparent fluidity and increase of fluid viscosity, the percolation curve is closer to the pressure gradient axis and the threshold pressure gradient increases. When the apparent fluidity is more than 1.0, the percolation curve shows modified Darcy flow characteristics, while when the apparent fluidity up＂ non-Darcy percolation curve; 3） Oil-water is less than 1.0, the percolation curve is a ＂concave- two-phase relative permeability is affected by core permeability, fluid viscosity, apparent fluidity, and injection drive force; 4） The oil saturation of low- permeability sandstone reservoirs is mostly within 35%-60%, and the oil saturation also has a good positive correlation with the permeability and apparent fluidity.