Tight oil reservoirs are characterized by low porosity, low permeability, small seepage channels (micro-nano-scale pore development), and low pressure coefficient. The existing development technology can not solve the problems of low output, fast decline, difficulty in replenishing energy, and low recovery ratio. In this paper, the T2 spectrum of saturated oil samples is detected by NMR analyzer, and the spontaneous imbibition and pressurized imbibition experiments are carried out with deuterium water. By scanning the T2 spectrum of nuclear magnetic resonance, the peak value of T2 spectrum decreases with the imbibition process, which indicates that the oil in the core is gradually imbibed, and the change trend of spontaneous imbibition quality is basically consistent with that of the spectral area. The experimental results show that the effects of soaking wells on the oil recovery of different wells are obviously different. There are many factors that affect the effect of well soaking, including porosity, permeability, mineral composition, and so on, which together affect the final effect of the well soaking. From the experimental results, the clay minerals in the core, especially the illite-montmorillonite mixed layer, have an obvious influence on the imbibition rate. The higher the content of the illite-montmorillonite mixed layer, the faster the imbibition rate. This study is of great significance for the development of the tight oil.

致密油储集层具有低孔、低渗、渗流通道小（微纳级孔隙发育）、压力系数低等特点。现有的开发技术不能解决产量低、下降快、能源补充困难、回收率低的问题。本文采用核磁共振仪对饱和油样的T2谱进行检测，利用氘水进行自吸和加压自吸实验。扫描核磁共振T2谱，T2谱峰值随着吸吸过程逐渐减小，说明岩心内的油是逐渐吸吸的，自吸质量的变化趋势与谱图基本一致。区域。实验结果表明，浸泡井对不同井采收率的影响存在明显差异。影响浸井效果的因素很多，包括孔隙度、渗透率、矿物成分等，共同影响最终的浸井效果。从实验结果看，岩心黏土矿物，尤其是伊蒙混层，对自吸速率有明显影响。伊蒙混层含量越高，自吸速度越快。该研究对致密油的开发具有重要意义。它们共同影响了浸泡的最终效果。从实验结果看，岩心黏土矿物，尤其是伊蒙混层，对自吸速率有明显影响。伊蒙混层含量越高，自吸速度越快。该研究对致密油的开发具有重要意义。它们共同影响了浸泡的最终效果。从实验结果看，岩心黏土矿物，尤其是伊蒙混层，对自吸速率有明显影响。伊蒙混层含量越高，自吸速度越快。该研究对致密油的开发具有重要意义。