SU19048A1 - Sucker rod pump for deep wells - Google Patents

Description

Patent No. 5196 describes a continuous sucker rod pump for deep wells, in which a tubular rod is used to provide continuous fluid supply. In the proposed pump, in order to remove gas from the working cylinder and to allow the pumping of liquid from the well from two different levels, two holes are located one above the other on the cylinder surface with valve-shaped boxes with ball check valves designed to drain gas from the pump to the well and the supply of fluid to the cylinder, with which to facilitate the flow of fluid and gas outlet boxes can be provided with tubes. Provided the pump plunger is carefully fitted to the cylinder liners, valve boxes can be replaced with open tubular nozzles without valves. In FIG. 1 shows a longitudinal section of a pump with a lower plunger pressure; FIG. 2-the same, with the upper position of the plunger; FIG. 3 is a cross-section of the pump along the line AB in FIG. 2; FIG. 4-longitudinal section

valve box; FIG. 5 is a cross-section along the line CG in FIG. four.

The pump cylinder is formed from a pipe 3 and an internal thick-walled pipe 2 composed of several internally ground and fitted to the plunger 3 bushings that are clamped at the ends of the cylinder with couplings 4 and 5 (Fig. 1 and 2). In the lower sleeve 4 there is a conical seat 6, into which the lower end 7 is inserted with a ball valve 8. In the upper part of the working cylinder, at a certain distance from the lower cone, two through side openings 9 and 10 are made one above the other diametrically opposite sides of the cylinder. Valve boxes 11 and 12 are screwed into these openings with ball check valves 13 and 14 arranged so that they freely allow fluid to flow from the well into the cylinder, while the fluid moves in reverse, it closes and the latter cannot get back from the cylinder into the well. In order to avoid damage to the ball valves 13 and 14, when the pump is lowered into the well to the pump casing;

safety lights of normal type, not shown in the drawing. In the lower part of the plunger 3, a ball pressure valve 15 is placed and a shlipsik 16 is arranged, by means of which you can grip the cage 17 of the lower valve and take out the lower cone 7. In the upper part of the plunger, cage 18 with an additional pressure ball valve is screwed, and To the head 19 of this cage, sucker rods are attached.

When the plunger moves upward in the pump cylinder, a vacuum is created, the ball receiving valve 8 opens and fluid from the well begins to flow into the cylinder. When the plunger, in its upward movement, reaches the lower edge of the side opening 9, the space in the pump cylinder between the lower valve and the plunger is filled with liquid and the gas coming along with it, which lowers the filling ratio of the pump. Upon its further upward movement, the plunger opens the side holes and rises above them, at the same time as the gas from the cylinder begins to break through the holes and go into the well. At the same time, the fluid from the well, under the influence of hydrostatic pressure, will begin to flow into the working cylinder through the same side holes and, thus, will add to it. Arrangement of the holes at different levels is made so that the flow of liquids into the working cylinder does not prevent gas from escaping. When the plunger moves back down, the liquid cannot escape through the side holes, since they will be blocked by the plunger itself, while the discharge valves 15 and 18 will open and all the liquid in the cylinder will go into the pump tubes. If the plunger is not sufficiently fitted to the sleeves, the ball valves 13 and 14 will prevent the liquid from flowing into the wellbore and into the well. With particularly careful fitting of the plunger to the hubs, the need for ball valves 13 and 14 is no longer necessary.

The proposed pump also allows pumping fluid from the well from two different levels, which is necessary in those cases when, in a well, m. T.

Water and oil. , In order to pump out both liquids from the well at the same time, it is necessary to start up two pumps at once: one into a column of water, the other into a column of oil. Lateral openings in the working cylinder allow at work to be performed by a single pump. For this purpose, the pump is lowered into the water column, and one of its side openings is supplied with a tube 28 (Fig. 4), the open end of which is raised and located in the oil column. When the pump is running, water will flow into the working cylinder through the lower receiving valve 8, and the oil through the tube 28 and the side opening, when the plunger opens it upwards when moving up. Gas will flow out through the second hole, whereby it can also be equipped with a tube, the free end of which is led out, thereby reducing the resistance to the passage of gas. To release the pumping tubes from the liquid, it is necessary to raise the plunger so that it exits the working cylinder, then all the liquid from the pipes goes into the well through the side holes.

The subject of the patent.

1. A deep well pump pump, characterized by the use of two, one above the other, side holes in the pump cylinder 1, 2, in which valve boxes 11, 12 with ball stop valves 13, 14 are screwed so that they do not interfere the passage of fluid into the working cavity of the pump cylinder from a deep well or from a well, which valves are installed to release gas and the possibility of filling the specified working cavity with a fluid, to facilitate the supply of which one of the valve boxes has Tube 28 (Fig. 4 and 5), which can be brought out when it is used to exhaust gas.

2. Modification of the pump described in paragraph 1, characterized in that with a careful fit of the pump plunger to the sleeves of the 2 cylinders, open tubular nozzles of the valves are installed instead of the valve boxes.