SU1286812A1 - Device for lifting suction valve of tube well sucker-rod pump - Google Patents

Abstract

The invention relates to well sucker rod pumps and can be used in deep well pumping operations. The purpose of the invention is to increase the operational reliability by ensuring reliable gripping of the suction valve. Cor

Description

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The cone bore with the cone bore is connected to the lower part of the plunger. The rod 4 has a conical head with shoulder, which is made conical. One additional sleeve (DV) 7 is installed on the conical bore of the body and is made in the form of several sections covered by an elastic element with an upper outer end conical surface (HHVTD) and a lower inner end conical surface (NVHTF). Another additional sleeve 8 with a VNTKP is freely mounted on the rod 4. Both LF 7 and 8 and a rod 4 are installed with the possibility of interaction of the VNTKP with collet 6 and NVTKP of the sleeve 7 with VNTKP of the sleeve 8. For raising the sun

the valve valve plunger lowered to DV 8, the head of the stem 4 opens DV 7 and passes it. DV 7 covers stem 4 and ram is lifted with the device. At the same time, DV 7 with its VNTKP rests on the tapered collar of the stem 4 and NVTPP sleeve 7 sits in the conical bore of the housing, preventing the stem 4 from coming back, Dp releasing the suction valve assembly from the plunger. In so doing, the DW 8 enters the DR 7, expanding it, and the plunger is raised. The tapered collar covers the VNTKP of the sleeve 8, and together with the last - rod 4 it leaves 3 sludge.

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The invention relates to well sucker rod pumps and can be used in downhole pumping wells.

The purpose of the invention is to increase operational reliability.

Figure 1 shows a device for raising the suction valve of a tubular downhole pump assembly, i.e. in the state of engagement with the suction valve assembly; Fig 2 is an element of the device associated with a plunger of a well sucker-rod pump; in fig. 3 - a device element connected to the suction valve of a downhole sucker-rod pump.

A device for raising the suction valve of a tubular borehole sucker pump comprises connected to the lower part of the plunger (not shown case 1 with a tapered bore 2 (FIG. 2) and connected to cage 3 of the suction valve (not shown) rod 4 (FIG. 3)) the head 5 of which has a shoulder 6. The device is equipped with two bushings 7 (FIG. 2) and 8 (FIG. 3), one of which — the sleeve 7 — is mounted on the tapered bore 2 of the housing 1 and is made up of several sections covered by the elastic element 9 upper 11 outer and lower 12 inner face knots The second surfaces are the sleeve 8 (FIG. 3; loosely mounted on the stem 4, its upper 13 outer face surface and the shoulder 6 of the conical head 5 of the stem 4 are tapered. Both sleeves 7 and 8 and the stem 4 (FIG. 1) installed with the possibility of interaction of the upper 11 of the outer and lower 2 inner end conical surfaces of the first

sleeve 7, respectively, with a tapered collar 6 of the conical head 5 of the stem 4 and the top 13 outer end conical surface of the second sleeve 8, the housing 1 is associated with

the plunger of the downhole pump rod through the sub 14 (figure 2).

A device for raising the suction valve of a borehole sucker-rod pump works as follows

in a way.

If it is necessary to lift the suction valve assembly (Fig. 3), the plunger is lowered to the additional second sleeve 8, while the conical head 5 of the stem 4 opens the additional first sleeve 7 and passes it. Due to the presence of the elastic element 9 and the conical bore 2 of the housing 1, the first one is additional

sleeve 7 takes the initial position, covering the body of the stem 4 (fig.Z and 2). The plunger is then raised with a device for lifting.

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suction valve of a well bore sucker rod pump. In this case, the first additional sleeve 7 with the upper conical end surface 11 abuts against the conical shoulder 6 of the conical head 5 of the stem 4, and the outer conical surface of the sleeve 7 sits in the conical boring 2 of the housing 1, not allowing the conical shoulder of the stem back. Thus, the suction valve assembly breaks down from the cone seat (not shown) of the borehole sucker-rod pump and rises from the well (not shown) to the surface.

Releasing the suction unit. valve from the plunger is produced by lowering the latter until the valve is fully seated in the cone saddle of a well pump. In this case, the second additional sleeve 8 enters the first additional sleeve 7 and, expanding it, leaves it open. Then the plunger is raised. A tapered shoulder 6 of the tapered head 5 of the stem 4 covers the upper outer end cone surface 13 of the second additional sleeve 8 and, together with the last, extends from the first additional 10 2

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Claims (1)

sleeve 7. So the suction valve assembly is released from the plunger. Invention Formula A device for raising the suction valve of a tubular borehole sucker pump, comprising a body with a conical bore and connected to the lower part of the plunger and connected to a cell of the suction valve, a cone head of which has a collar, which is equipped with an additional two bushings, one of which is mounted on the conical bore of the case and is made in the form of several sections covered by the elastic element with the upper outer and lower inner face onus surfaces, and the second is freely mounted on the rod, its upper outer end surface and the collar of the conical stem are conical, and both bushings and the stem are installed with the possibility of interaction between the upper outer and lower inner end conical surfaces of the first bush and the upper outer conical surface of the second sleeve. Fig, 2. fptts, 3