While-drilling advanced forecasting device and method for directional drilling of ultra-deep holes

Abstract

The invention discloses an ultra-deep hole directional drilling while-drilling advanced forecasting device and method in the technical field of geological survey, and the ultra-deep hole directional drilling while-drilling advanced forecasting device comprises a seismic wave testing joint, a movable connecting joint, an expansion joint and a hammering joint which are connected in sequence, and a first hoisting mechanism and a locking mechanism are arranged in the movable connecting joint; the lower end of the movable connecting joint and the upper end of the expansion joint are provided with a guide groove and a guide head which can be in butt joint in a matched mode respectively, a pull rope of the first hoisting mechanism is connected with the top of the expansion joint, and the lock catch mechanism can lock and fix the guide head when the guide groove is in butt joint with the guide head. In the process of lowering the equipment, the seismic wave testing section is fixedly connected with the hammering section through the lock catch mechanism, so that the seismic wave testing section and the hammering section can stably reach a preset position, and in the testing process, the seismic wave testing section is separated from the hammering section and is connected only through the pull rope, so that the hammering section does not directly vibrate the seismic wave testing section; the vibration error influence generated by the transmitting and receiving integrated device is solved, and the test result is more accurate.

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