SU1601360A1 - Gas separator - Google Patents

Abstract

The invention can be used in pumping operation of inclined wells and allows them to increase the efficiency of gas separation and simplify the design of the gas separator. The separator, located at the inlet of the borehole pump, contains a separating element 4 installed with the possibility of rotation in supports 1 and 2, made in the form of an annular sleeve (B) 5 with a notch along the generator and counterweight 7 connected to B 5 and located below it from the side cutout. In the inclined well section, the counterweight 7, due to the displacement of its center of gravity, unfolds B 5 so that its uncut portion faces the upper defining wall of the well and prevents free gas bubbles entering the pump, which are separated by Archimedes force to said generator. The cutout B 5, which faces the lower part of the borehole wall, passes a partially degassed fluid to the pump inlet. The separator allows the curvature of the well to be used for the separation of liquid and gas. 5 il.

Description

The invention relates to the extraction of oil and can be used in the pumping operation of inclined wells.

The purpose of the invention is to increase the efficiency of gas separation in inclined wells while simplifying the design.

FIG. 1 is a diagram of a gas separator; in FIG. 2 - node separating element; in fig. 3 view A in FIG. 2; in fig. - section bb in fig. 2; in fig. 5 is a sectional view BB in FIG. 3

A gas separator (Fig. 1) is placed at the inlet of a downhole pump (not shown) and contains upper and lower supports 1 and 2, interconnected by protective rods 3, and separating element k mounted in supports 1 and 2 (see Fig. 2-5), made in the form of an annular sleeve 5 with a notch 6 along the C-C generatrix and a counterweight 7 connected to the sleeve B and located below the latter from the notch 6 side

bushings 5.

The separator is mounted on the suction pipe 8 of the pump.

The separator works as follows.

During the descent of the tubing string with the pump into the inclined section of the well, the counterweight 7a, due to the displacement of its center of gravity relative to the axis of rotation, rotates on supports 1 and 2 and occupies a position in the well as close as possible to the lower forming wall of the well. In this case, the annular bushing 5 is oriented with its uncut portion towards the upper one forming the borehole wall, and with the notch 6 towards the lower circumference

five

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five

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45

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55

 expanding. In this position, when sucking in the pump, through the annular sleeve 5, non-carbonated liquid flows from the side of the lower part of the borehole wall and a part of the liquid, flowing around the element k and thus releasing gas bubbles. The arrows in FIG. Figure 1 shows the direction of fluid movement. Bubbles of free gas under the action of Archimedes force float to the top forming the wall of the well and bypass the pump. The design of the gas separator makes it possible to use the curvature of the well as a factor contributing to the natural separation of the flow of liquid and gas and the flow of already separated liquid into the pump; at the same time, the wall of the sleeve 5 prevents the ingress of gas from the upper generator to the pump inlet. This increases the efficiency of gas separation and simplifies the design of the device-tBa.

Claims (1)

Invention Formula A gas separator located at the inlet of the borehole pump and containing upper and lower supports interconnected by protective rods and mounted in the supports rotatably separating element, characterized in that in order to increase the efficiency of gas separation in inclined wells while simplifying the design The separating element is designed as an annular sleeve with a notch along the generator and a counterweight connected to the sleeve and located below the last one from the notch side of the sleeve. Vida FIG. 2 FIG. five FIG.