Logging instrument follow-up measurement unclamping device

The utility model discloses a logging instrument card unclamping device under test, the card unclamping device comprises a mechanical section, a hydraulic section and an electronic section, the mechanical section comprises a pushing section, a card unclamping section and a threading pipe, and one end of the threading pipe is connected with the hydraulic section. The logging instrument clamp releaser provided by the utility model is directly in threaded hard connection with a logging instrument and works along with the logging instrument, the clamp releasing thrust is large, and a clamp releaser circuit and a detection instrument circuit can be exchanged at any time; the card releaser can be used for releasing cards at any time, so that the downhole operation time of the detection instrument is prolonged, and the card releasing is more efficient; the unclamping device is reasonable in structural sequence, the unclamping device is connected with a horse tap and connected with a logging instrument, and installat