BOREHOLE SEISMIC VIBRATOR Russian patent published in 2023 - IPC G01V1/155 G01V1/40 

FIELD: vibroseismic technique.

SUBSTANCE: invention can be used to enhance oil recovery of oil fields by borehole vibration impact on oil reservoirs, as well as for seismic exploration of the Earth's interior. Borehole seismic vibrator contains at least one a power element made in form of a cylindrical body with puncheons, terminals, elastic chambers, wedge spacers, return springs, electromagnetic hammer with forward and reverse coils and striker position sensors, converter connected via nozzles with the pump and with the power elements, and a communication cable hammer with power and control unit. Converter is made in form of at least two coaxially located hydraulic cylinders with pistons of larger and smaller diameters rigidly connected to each other. The cavity of the hydraulic cylinder with a piston of a smaller diameter is connected by means of a pressure line to a high-pressure water pump and is equipped with a pressure sensor and a temperature sensor, and the cavity of the hydraulic cylinder of a piston of a larger diameter is connected with oil-filled elastic chambers of power elements by means of connecting pipes.

EFFECT: expansion of technological capabilities, consisting in increasing the reliability of the vibrator under conditions of high pressure and temperature, by changing pressure in the cavity of the chamber of the large hydraulic cylinder of the converter, associated with a guaranteed return of the pistons and, accordingly, with the return of the puncheons with terminals of power elements to their original position, which ensures unobstructed extraction of the vibrator from the casing.

4 cl, 4 dwg