Liquid-driven coiled tubing jar

The invention discloses a liquid-driven coiled tubing jar, and relates to the technical field of drilling equipment. The jarring piston rod is compressed through liquid pressure, medium connection and disconnection of the cavity at the rear end of the jarring piston rod are achieved through the rotation control assembly, and therefore control over the pressure difference of the front end and the rear end of the jarring piston rod is achieved. The rotation control assembly is driven by liquid to rotate, and the rotation speed of the rotation control assembly can be adjusted by adjusting the flow speed of the liquid; therefore, the purpose of controlling the jarring frequency of the jarring piston rod is achieved. A movable drilling tool is not needed, fluid is used for driving jarring, the jarring frequency is high, the frequency can be adjusted, and meanwhile continuous jarring can be achieved. 本发明公开了一种液体驱动的连续油管震击器，涉及钻井设备技术领域。本发明利用液体压力压缩震击活塞杆，通过旋转控制组件实现震击活塞杆后端腔体的介质通断，从而实现对震击活塞杆前端后端压差的控制，而旋转控制组件由液体驱动旋转，可通过调整液体