SU1513192A1 - Foam-arresting device for down-hole pump - Google Patents

Abstract

The invention can be used when lifting reservoir fluids from foaming wells. The purpose of the invention is to increase the efficiency of operation of the antifoam device of the well pump by intensifying the process of foam destruction. In the perforated in the upper part of the chamber 1 is installed with the formation of the annular cavity 2 split suction pipe 3. In the connector 4 of the pipe 3 there is a sliding nipple 5, in the upper end 6 of which there is a partition 7 with an opening 8. The nipple 5 is provided located on its side surfaces with mesh discs 9. The latter are installed with the possibility of overlapping the cavity 2 and joint movement with the nozzle 5 along the upper part of the chamber 1. 2 sludge.

Description

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The invention relates to the oil industry, in particular, to well pumps, and can be used to lift reservoir fluids from foaming wells. The purpose of the invention is to increase the efficiency of operation by intensifying the process of foam destruction,

Fig. 1 shows the anti-foam device of the borehole pump during its upward stroke of the plunger, general view; Fig 2 is the same when the plunger moves down.

. The anti-foam device of the well pump contains a perforated chamber in the upper part and a detachable suction pipe 3 with a sliding nozzle 5 arranged in its chamber 4 with the formation of an annular cavity 2, and a partition 7 with an aperture 8 in its upper end 6. provided with mesh disks 9 arranged on its side surface mounted to overlap the annular cavity 2 of the chamber 1 and to move together with the sliding nozzle 5 along the upper perforation ovannoy part. The detachable suction pipe 3 in the lower part is made with openings 10 for communication of the lower part of the annular cavity 2 of the chamber 1 with the intake of a starter pump (not shown).

The device works as follows.

During the course of the plunger (not shown) of the borehole pump, the upward fluid sucked from the lower part of the annular cavity 2 of the chamber 1 passes through the detachable suction pipe 3 inside the sliding nozzle 5 and creates pressure on the partition 7, thereby moving the sliding nozzle 5 with its side surface mesh disks 9 to the extreme upper position. During the upward movement of the sliding

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pipe 5 together with mesh discs 9 coming from the annulus of the well (not shown) in

chamber 1: a fluid-liquid mixture passes through mesh discs 9 (Fig. 1), in which case the foam collapses, coalescing into large gas bubbles that escape into the annulus

wells through the upper perforated part of the chamber 1, the intensity of the foam failure increases with the opposite movement of the foam-liquid mixture and mesh disks 9, and

the cells of the mesh disks must be less than the size of the gas bubbles forming the foam column,

When the borehole pump plunger moves down, the sliding nozzle 5 together with the mesh disks 9 placed on its side surface falls down to the lowest position (Fig 2), destroying 1 part of the foam. At the same time, the liquid released from the foam fills the lower part of the receiving chamber 1,

Then the cycle is repeated.

Claims (1)

Invention Formula The anti-foam device of the well pump contains a chamber perforated in the upper part and installed in the chamber with the formation of an annular cavity. A detachable suction pipe with a sliding nozzle located in its connector, in the upper end of which there is a partition with a hole characterized by By the fact that, in order to increase the efficiency in operation by intensifying the process of foam destruction, the sliding nipple is provided with mesh discs installed so as to overlap the annular cavity of the chamber and be jointly moved with the sliding nipple along its upper perforated part, 2