Soluble ball seat sealing device structure suitable for unconventional oil and gas exploitation

The utility model discloses a soluble ball seat sealing device structure suitable for unconventional oil and gas exploitation, relates to the technical field of unconventional oil and gas exploration and development, and is used for solving the problem that an existing soluble ball seat is not tight in sealing. The soluble ball seat consists of an integral slip base body and a triple sealing structure, wherein a spacer ring, a lower metal sealing ring, a soluble rubber sealing ring, an upper metal sealing ring, a U-shaped metal sealing ring and an elliptical soluble rubber ring are sequentially sleeved on a sliding body of the soluble ball seat; the ball seat is sealed by a first spacer ring, a second heavy metal sealing ring combined with the soluble rubber sealing ring and a third U-shaped metal sealing ring combined with the elliptical soluble rubber ring, and the sealing performance of the ball seat is greatly improved on the basis that the pressure-bearing grade requirement of the soluble ball seat is en