Highly-sealed retrievable anchoring packer

A highly-sealed retrievable anchoring packer, comprising:

• a hollow tube, an outer side of the hollow tube being provided with a first retaining ring and a second retaining ring;
• a blocking member, configured for blocking an opening of the hollow tube close to the first retaining ring;
• an expansion sleeve, sleeved on the outer side of the hollow tube and located between the first retaining ring and the second retaining ring;
• a drive sleeve, slidably sleeved on an outer side of the first retaining ring, wherein a cavity is formed by enclosing of a side of the drive sleeve facing the hollow tube, a side wall of the first retaining ring and an outer wall of the hollow tube, the cavity being communicated with the hollow tube;
• and
• at least one slip assembly, comprising a resilient member, and a slip member and an inclined body slidably arranged between the first retaining ring and the second retaining ring, the slip member being connected to the inclined body, the inclined body being configured to pressurize the expansion sleeve to make the expansion sleeve expand radially, and two ends of the resilient member being respectively connected to the slip member and the hollow tube;
• wherein the inclined body is configured to squeeze the expansion sleeve to make the slip member slide along the inclined body to expand forward when liquid enters the cavity through the hollow tube to drive the drive sleeve to move toward the second retaining ring;
• the resilient member is configured to drive the slip member to reset when the hollow tube moves longitudinally upward along an operation well to discharge the liquid in the cavity,
• wherein the outer wall of the hollow tube is provided with a mounting groove, and the resilient member is fixed in the mounting groove, with one end of the resilient member away from the mounting groove being connected to the slip member.