Leakage-proof plugging agent as well as preparation method and application thereof

The invention discloses a leak-proof plugging agent as well as a preparation method and application thereof. The anti-leakage plugging agent is prepared from the following components in percentage by mass: 5 to 13 percent of multi-morphology alloy, 3 percent of MDF, 0 to 3 percent of PF-EZCARB, 0.5 to 1 percent of brucite fiber and the balance of well slurry. The anti-leakage plugging agent can also comprise 3% of SQD-98. According to the invention, an acid-soluble leaking stoppage formula with the plugging pressure-bearing capacity of more than 10 MPa and the acid solubility of more than 70% is preferably selected for crack widths with different opening degrees, and the application prospect is wide. 本发明公开了一种防漏堵漏剂及其制备方法和应用。所述防漏堵漏剂包括以下质量百分比的组分：5-13％多形貌合金、3％MDF、0％-3％PF-EZCARB、0.5％-1％水镁石纤维，余量为井浆。所述防漏堵漏剂还可包括3％SQD-98。本发明针对不同开度的裂缝宽度，优选出了封堵承压能力可达10MPa以上、酸溶率可达到70％以上酸溶堵漏配方，应用前景广阔。