开展油层保护研究工作,用钻井液、完井液对天然或人造岩心进行人为损害是必不可少的一个试验环节,以前主要采用高温高压动失水仪[1]进行动态和静态损害试验。但在应用中发现,如果只需要对岩心进行静态损害试验,用高温高压动失水仪就有很多不便之处,如钻井液、完井液用量大;仪器 Carrying out research on reservoir protection, artificial drilling of drilling fluid and completion fluid on artificial or artificial cores is an indispensable part of the experiment. Previously, high-temperature and high-pressure dynamic loss water analyzer [1] was used for dynamic and static damage tests. However, it has been found in application that if only static damage testing on the core is required, there are many inconveniences associated with using the high temperature and high pressure moving water meter, such as large amount of drilling fluid and completion fluid;