在原针入度法的基础上研制了评价雾化钻井用井壁稳定剂的改进型针入度法测试装置（ ＭＤ 评价装置），提出用受试岩心的针入度测定值表达的岩心水化膨胀抑制率Ｉｐ 作为指标，来评价雾化钻井用井壁稳定剂。本文报道的研究结果表明，此评价方法消除了液体雾化量对针入度测定结果的影响，评价结果的可比性比原针入度法提高 Based on the original penetration method, an improved penetration penetration testing device (MD evaluation device) for evaluating wellbore stabilizer for atomizing drilling was developed, and the core hydration expressed by measured penetration of the tested core was proposed Expansion inhibition Ip as an indicator to evaluate the borehole wall stabilizer with atomized drilling. The results reported in this paper show that this evaluation method eliminates the influence of liquid atomization on the determination of penetration, the comparability of evaluation results is higher than the original penetration method