HYDRAULIC POWER SYSTEM FOR A DOWNHOLE APPARATUS AND DOWNHOLE APPARATUS Russian patent published in 2022 - IPC F15B11/28 F15B11/05 F15B11/17 

FIELD: hydraulics.

SUBSTANCE: hydraulic power system for a downhole apparatus, containing: a first engine (10), a first hydraulic pump (11), a second hydraulic pump (12), a first primary oil channel A, a second primary oil channel B, a switching control module (13), and a first execution module (14). The first engine (10) comprises a first output shaft (101) and a second output shaft (102); the first output shaft (101) actuates the first hydraulic pump (11), and the oil outlet of the first hydraulic pump (11) is linked with the input end of the first primary oil channel A; the second output shaft (102) actuates the second hydraulic pump (12), and the oil outlet of the second hydraulic pump (12) is linked with the input end of the second primary oil channel B; the first execution module (14) is linked with the output end of the first primary oil channel A; the productivity of the first hydraulic pump (11) is less than that of the second hydraulic pump (12); and the switching control module (13) is connected between the first primary oil channel A and the second primary oil channel B and is used to adjust the working pressure of the first primary oil channel A and the speed of movement of the first execution module (14) by controlling the opening and closing of the first primary oil channel A and the second primary oil channel B. Also disclosed is a downhole apparatus containing the above hydraulic power system.

EFFECT: creation of a functional hydraulic power system.

10 cl, 10 dwg