Abstract: A wet connector for a downhole tool string includes an insulating material body, a conductive core and an insulating piston. The insulating material body is provided with a first chamber, and the first chamber is filled with insulating oil. A conductive core chamber of the conductive core is communicated with the first chamber. The insulating piston is hermetically connected to a first opening through a first sealing lip. When a male connector abuts against the insulating piston and moves toward the bottom of the conductive core chamber, the male connector is in contact with and electrically connected to the conductive core chamber and causes oil to flow from the conductive core chamber so that the insulating oil in the first chamber is compressed and a pressure of the insulating oil in the first chamber is enabled to be greater than a pressure of well fluid outside the wet connector.

Abstract: A wet connector for a downhole tool string includes an insulating material body, a conductive core and an insulating piston. The insulating material body is provided with a first chamber, and the first chamber is filled with insulating oil. A conductive core chamber of the conductive core is communicated with the first chamber. The insulating piston is hermetically connected to a first opening through a first sealing lip. When a male connector abuts against the insulating piston and moves toward the bottom of the conductive core chamber, the male connector is in contact with and electrically connected to the conductive core chamber, so that the insulating oil in the first chamber is compressed, and a pressure of the insulating oil in the first chamber is enabled to be greater than a pressure of well fluid outside the wet connector.