保护油层的屏蔽暂堵技术在现场上已广泛应用，但由于暂堵剂粒径不合理等因素的影响，经常达不到预期效果。室内及现场实验研究表明，暂堵剂粒径与地层平均孔喉直径最合理的匹配关系为2：3～1：1，在这些范围内钻井液、完井液滤失量小，屏蔽层形成快、稳定，渗透率低。在使用屏 Protective temporary shield blocking technology in the reservoir has been widely used in the field, but due to the temporary blocking agent particle size is not reasonable and other factors, often fail to achieve the desired results. Laboratory and field experiments show that the most reasonable match between the size of temporary plugging agent and the average pore throat diameter of formation is 2: 3 ~ 1: 1. Within these ranges, the fluid loss of drilling fluid and completion fluid is small and the shielding layer is formed Fast, stable, low permeability. Using the screen