RU98104421A - BRAKE DRIVE SYSTEM LOCATED IN THE HOLE OF THE WELL - Google Patents

Claims (7)

1. Braking mechanism to avoid too abrupt release of twisting energy of the \ 34 \ drill rod string when stopping or stopping the power supply, intended for use with the injection system in which the well pump \ 33 \ has a rotor \ 33 \ rotating through the lower end \ 66 \ columns \ 34 \ of drill rods, and the upper end of the column, in turn, is rotated by the torque generated by the main engine \ 10 \, and in which the energy of learning, characterized in that the mechanism contains:
a \ rotational element \ 16 \, set in such a way that it rotates with a constant gear ratio and direction relative to the upper end of the column \ 34 \ drill rods;
b \ pump \ 40 \ for fluid;
c \ reservoir \ 20 \ containing the fluid \ 36 \;
d \ inlet pipe \ 42 \, providing fluid communication in the tank \ 20 \ with the pump inlet \ 40 \ fluid;
e \ outlet pipe \ 44 \, providing fluid communication in the tank \ 20 \ with the pump outlet \ 40 \;
f \ adjustable valve \ 46 \ flow control, located in one of the mentioned pipelines \ 42,44 \;
g \ means \ 48 \ control in the form of an overrunning clutch, operatively connected with the pump \ 40 \ so that when the upper end of the string \ 34 \ drill rods rotates in the direction corresponding to the normal operation of the well pump \ 33 \, pump \ 40 \ for the fluid does not perform injection work, but when the upper end of the \ 34 \ drill rod column rotates in the opposite direction to the normal operation of the well pump \ 33 \, the pump \ 40 \ for the fluid does the work of pumping the fluid \ 36 \ from the reservoir \ 20 \ and back to him, with overcoming iem resistance determined by adjusting the valve \ 46 \
in this case, if the energy accumulated in the column \ 34 \ drill rods, is allocated sharply, there is a controlled dissipation of energy.  2. The brake mechanism according to claim 1, characterized in that the main engine includes a vertical first shaft \ 12 \ holding the first pulley \ 14 \, while the rotational element \ 16 \ is an elongated and actually vertical second shaft holding the second pulley \ 18 \, and the mechanism includes a belt \ 19 \ covering the first and second pulleys, and said control means in the form of an overrunning clutch \ 48 \ connects the rotary element \ 16 \ and the pump \ 40 \ for the fluid, so that coupling \ 48 \ slips during normal operation of the borehole us ca \ 33 \, but allows rotational engagement element \ 16 \ a pump \ 40 \ for the fluid column during reverse rotation \ 34 \ drill string.  3. The brake mechanism according to claim 2, characterized in that it contains an additional rotary element \ 30 \, holding and rotating the upper end of the string \ 34 \ drill rods, and driven by the main rotary element \ 16 \.  4. The brake mechanism according to claim 3, characterized in that the main rotational element \ 16 \ is adapted to drive the additional rotational element \ 30 \ by engaging two gears \ 37 \, one of which is attached to the main rotational element \ 16 \, and the other to the additional rotary element \ 30 \, while the details of the rotational elements holding the gears are located inside the tank \ 20 \, and the fluid \ 36 \ is a hydraulic fluid.  5. The brake mechanism according to claim 3, characterized in that the main rotational element \ 16 \ is adapted to drive the additional rotational element \ 30 \ by means of a chain that engages with two sprockets, one of which is attached to the main rotational element \ 16 \ and the other to the additional rotary element \ 30 \, while the chain and parts of the rotational elements holding the sprockets are located inside the tank \ 20 \, and the fluid \ 36 \ is a hydraulic fluid.  6. The brake mechanism according to any one of claims 1 to 5 in combination with a downhole pump \ 33 \, which includes a stator \ 62 \ and a rotor \ 64 \, a string \ 34 \ of drill rods having an upper end and a lower end, the lower end is connected to the rotor \ 64 \, holds and rotates it, the main engine \ 10 \, which creates a torque for rotation of the upper end, while in the process of working in the string \ 34 \ of drill rods accumulates twisting energy. 7. The method of operation of the injection system, which uses a well pump \ 33 \, including a stator \ 62 \ and a rotor \ 64 \, a string \ 34 \ of drill rods having an upper end and a lower end, the latter being connected to the rotor \ 64 \, holds and rotates it, and the main pump \ 10 \, which generates a torque to rotate the upper end, the method comprising actuating the main pump \ 10 \ to rotate the upper end of the drill string, so that the lower end rotates the rotor \ 64 \, while in the column \ 34 \ drill rods in the process of work accumulates the energy of twisting, when stopping or stopping the supply of energy, a slow and controlled release of twisting energy, characterized in that the slow release of twisting energy is performed by:
and \ the passage of energy from the main engine \ 10 \ first to the rotary element \ 16 \, and then from the rotational element \ 16 \ to the upper end of the column \ 34 \ drill rods so that the rotary element \ 16 \ rotates with a constant gear ratio and direction relative to the upper end of the string \ 34 \ drill rods;
b \ connecting the rotary element \ 16 \ to the pump \ 40 \ for the fluid so that when the upper end of the string \ 34 \ of the drill rods rotates in the direction corresponding to the normal operation of the well pump \ 33 \, the pump \ 40 \ for the fluid does not performs any injection work, but when the upper end of the \ 34 \ drill rod string rotates in the opposite direction to that which corresponds to the normal operation of the well pump \ 33 \, the pump \ 40 \ for the fluid performs injection work;
c \ in any case, the accumulated energy is released, while the accumulated energy drives the pump \ 40 \ to pump fluid from the tank \ 20 \ and back to the tank in a closed line;
d \ control the rate of release of accumulated energy by limiting the flow of fluid along the line.