Plugging agent as well as preparation method and application thereof

The invention provides a plugging agent as well as a preparation method and application thereof. The plugging agent is prepared from the following components in percentage by weight: 8-15 percent of silicon sludge, 5-10 percent of aging oil, 1-3 percent of vermiculite powder, 2-4 percent of walnut shell powder, 1-3 percent of sulfonated asphalt powder, 0.3-0.8 percent of a KYPAM polymer, 0.2-0.6 percent of anionic cellulose ether, 0.2-0.5 percent of sodium alpha-olefinsulfonate and the balance of water. The plugging agent and the preparation method thereof provided by the invention can reuse the silicon sludge and aging oil resources; and meanwhile, the prepared plugging agent has good performances of temperature resistance, salt resistance and the like and can be completely suitable for technical application of profile control and water plugging of a high-temperature and high-salt oil-water reservoir well. 本发明提供种调堵剂及其制备方法和应用。以重量百分比计，该调堵剂的原料组分包括8％-15％的硅泥，5％-10％的老化油，1％-3％的蛭石粉，2％-4％的核桃壳粉，1％-3％的磺化沥青粉，0.3％-0.8％的K