SU37994A1 - Hydraulic rod pump for deep wells or boreholes - Google Patents

Description

Deep sucker rod pumps used in oil fields have a number of drawbacks such as the bulkiness of the entire installation, frequent breakage of the rods, the presence of large dead masses, etc.

The present invention aims at eliminating the aforementioned disadvantages by using a casing that serves simultaneously as a pump cylinder and encloses a pump cylinder of a smaller diameter inside.

In FIG. 1 schematically shows a general view of the pump; FIG. However, the lower part of the pump, located in the ground, is in a vertical section; FIG. 3 - its upper part.

The pump device consists in the fact that the casing 1, which also serves as the pump cylinder, is provided with an inlet valve 2. Inside the pipe 1 a second pump cylinder 7 is placed, of smaller diameter, the piston 6 of which is connected by a rod 4 with the through piston 3 in pipe 1. The bottom part of the cylinder 7 under the piston 6 is connected to the end of the pipe-rod 9. The upper part of the cylinder 7 above the piston 6 is connected to the end of the pipe 11, which is extended above the pump and fixed at the top. In turn, pipe 11 is reported

(ZEZ)

holes 15 with a pipe 1. A cylinder 12 is installed on the surface of the earth (FIG. 3), in which the piston 13 moves. On the left side of the piston is water, which communicates with a pipe 9-9i, which is a hydraulic rod connecting the cylinder 7 with the cavity of the pump cylinder 12. The right side of the cylinder 12 is connected to the pressure pipe Ij for oil, equipped with a mechanism 14, which opens and closes the oil outlet from the pressure pipe.

The action of the pump is as follows. When the piston 13 moves to the left, it pushes out water, which produces pressure in the pipe 9 - this pressure is transferred to the lower surface of the piston 6, as a result of which this latter rises up, pushing water from the upper part of the cylinder 7 into pipe P. Together with, the piston 6 rises up a rod 4 connected to it by a rod 4 that pushes oil through the outlet valve 8 through pipe 1; mechanism 14 keeps oil out during this cycle. At the same time, oil is sucked through the inlet valve 2 "When the piston 13 moves

to the right, the mechanism 14 closes the oil outlet, as a result of which the pressure of the piston 13 is transferred to the oil in the pipe 1 and then through the worm 15 to the water in the pipe 11 and in the pipe 7 communicated with it; thereafter, the piston 6 is lowered together with the piston 3, through the valve of which the oil flows upwards. Water from under the piston 6 is sucked by the piston 13 into the left cavity of the cylinder 12. The latter is equipped with safety valves 16 and 17 and a valve 18 to replenish the loss of water.

Preferred Acquisition.

A hydraulic rod pump for deep wells or wells, characterized by the use of casing 1, which serves as a pump cylinder and encloses a second pump cylinder 7 of smaller diameter inside, the piston 6 of which is connected to the rod 4 with the flow piston 3 from pipe 1, which is cylinder 7 communicates at the top with pipe 11, which in turn communicates holes 15 with above pipe 1, and below, under piston 6, with pipe 9, 9i, representing the hydraulic rod connecting the cylinder 7 to the cavity of the pump cylinder 12, on the left one From the piston 13 of the designated cylinder, the cavity on the right side of which piston communicates with the pressure pipe li connected to the pipe 1 and the closing valve 14.

2.

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