CN220850184U - Flushing device for concentric tube jet pump operation - Google Patents

Abstract

The utility model relates to the technical field of concentric tube jet pumps, in particular to a flushing device for concentric tube jet pump operation, which comprises an inner pump cylinder, an outer pump cylinder, a sliding core, a ball seat and a fixed valve ball, wherein the outer pump cylinder is arranged outside the inner pump cylinder, an annular flow passage is arranged between the inner pump cylinder and the outer pump cylinder, the upper part of the ball seat is positioned between the inner pump cylinder and the lower part of the outer pump cylinder, a hole cavity which is penetrated up and down is arranged in the middle part of the ball seat, the middle part of the hole cavity is a conical hole with the inner diameter being big and small up and down, the fixed valve ball is positioned in the conical hole, an installation cavity which is penetrated up and down is arranged in the middle part of the inner pump cylinder, and an inner boss is integrally arranged on the inner side of the lower part of the inner pump cylinder. The utility model has reasonable and compact structure and convenient use, pressurizes fluid through the conical hole at the upper part of the sliding core and the lower part of the inner flow passage, is closer to the fixed valve ball and the hole cavity, is more thoroughly flushed, and the flushed liquid flows out of the device from the open slot, the flow hole and the annular flow passage, and removes the sliding core from the inner pump barrel through the lifting component in the interception cavity.

Description

Flushing device for concentric tube jet pump operation

Technical Field

The utility model relates to the technical field of concentric tube jet pumps, in particular to a flushing device for concentric tube jet pump operation.

Background

The concentric tube jet pump drainage process has wide application range in the oil and gas exploitation process of the oil field. The underground jet pump is driven to work by taking high-pressure water as power liquid, and the purpose of lifting produced liquid by a shaft is achieved by energy conversion between the power liquid and the produced liquid. During operation, before the pump core of the jet pump is put into after completion, the fixed valve ball is put into the inner oil pipe, and then the well is washed. The purpose of flushing is to flush out the foreign matters such as mud sand, rust chips, scale chips and the like entering the inner and outer oil pipes in the operation process. The common well flushing modes are two, namely, power fluid enters from an inner oil pipe and returns from an inner oil pipe ring space and an outer oil pipe ring space, and power fluid returns from the inner oil pipe. When the two methods are used for flushing, the annulus inside the inner oil pipe, the annulus between the inner oil pipe and the outer oil pipe and the jet pump channel can be flushed completely, but the surface of the fixed valve ball of the jet pump and the cavity above the fixed valve ball cannot be flushed due to the trend of the flow passage. When the pump core of the jet pump is put into production after flushing, because the surfaces of the fixed valve balls and the hole cavities on the fixed ball valves are not flushed completely, foreign matters can be attached to the fixed valve balls, and can cause abnormal opening of the fixed valves, the fixed valve balls can not be opened or the opening degree is reduced, so that stratum produced liquid can not enter or only a small amount enters the jet pump, and the normal production of the jet pump is influenced.

The utility model patent CN216767324U provides a flushing device for concentric tube jet pump operation, which belongs to a device for oil and gas exploitation in oil fields, and comprises a flushing pump core, wherein a flushing nozzle is arranged in the middle of the flushing pump core, a longitudinal Y-shaped flow passage is arranged on the flushing nozzle, the flushing pump core is arranged in an inner pump cylinder of the concentric tube jet pump, the inner pump cylinder of the concentric tube jet pump is arranged in an outer pump cylinder of the concentric tube jet pump, a fixed valve seat is fixed at the lower end of the outer pump cylinder of the concentric tube jet pump, and a fixed valve ball is arranged at the inner side of the fixed valve seat. The flushing device effectively solves the problem that the surface of the fixed valve ball and the hole cavity on the surface of the fixed valve ball cannot be flushed in place, has good flushing effect, ensures normal production of the jet pump, has a simple structure and convenient operation, and is started and stopped by hydraulic force without adding other auxiliary equipment and facilities.

The technical scheme solves the problems in the background technology to a certain extent, but adopts the technical scheme that the flow is guided through the tubular structure, so that the downward stroke of liquid is increased, the liquid can impact the position of the hole cavity, and then cleaning is realized, but the cleaning effect of gaps between the fixed valve ball and the hole cavity is still limited when water flow impacts the fixed valve ball due to the fact that the water flow is still a certain distance away from the fixed valve ball.

Disclosure of Invention

The utility model provides a flushing device for concentric tube jet pump operation, which overcomes the defects of the prior art and can effectively solve the problem that the flushing device for concentric tube jet pump operation has limited cleaning effect.

The technical scheme of the utility model is realized by the following measures: the utility model provides a flushing device of concentric tube jet pump operation, including interior pump barrel, outer pump barrel, sliding core, ball seat and fixed valve ball, be equipped with outer pump barrel outward in the interior pump barrel, be the annular space runner between interior pump barrel and the outer pump barrel, ball seat upper portion is located between interior pump barrel and the outer pump barrel lower part, the ball seat middle part is equipped with the bore cavity that link up from top to bottom, the bore cavity middle part is the bell mouth hole that the internal diameter is big-end-up, fixed valve ball is located the bell mouth hole, the interior pump barrel middle part is equipped with the installation cavity that link up from top to bottom, the inboard of interior pump barrel lower part is integrative to be equipped with interior boss, interior boss middle part is equipped with the mounting hole that link up from top to bottom, the mounting hole communicates with the installation cavity, be located the mounting hole behind the sliding core lower extreme, be equipped with the interior runner that link up from top to bottom and the installation cavity intercommunication, interior runner upper end is the bell mouth hole that big-end down is on the inner wall of interior runner downside circumference is equipped with the open slot, the inside hole that corresponds the sliding core outside of each open slot upper end-up position is equipped with the inside and holds down, the inside hole that the corresponding through hole's the inner pump barrel that the inside and outside is equipped with inside and outside through-out.

The following are further optimizations and/or improvements to the above-described inventive solution:

The inner side of the lower part of the inner flow passage corresponding to the lower side of the interception cavity can be a spiral groove.

The lifting assembly can comprise a stop block and a light hollow valve ball, wherein the stop block is fixedly arranged on the inner side of the interception cavity, and the light hollow valve ball can be blocked by the stop block and positioned in the interception cavity.

Six open slots can be uniformly distributed on the inner wall of the lower side of the sliding core along the circumference.

The utility model has reasonable and compact structure and convenient use, pressurizes fluid through the conical hole at the upper part of the sliding core and the lower part of the inner flow passage, is closer to the fixed valve ball and the hole cavity, is more thoroughly flushed, and the flushed liquid flows out of the device from the open slot, the flow hole and the annular flow passage, and removes the sliding core from the inner pump barrel through the lifting component in the interception cavity.

Drawings

FIG. 1 is a schematic diagram of a cross-sectional front view of a device according to an embodiment of the present utility model.

Fig. 2 is a schematic view showing a sectional front view of a slide core discharged according to an embodiment of the present utility model.

Fig. 3 is a cross-sectional view of the slide core at the position of the flow hole.

The codes in the drawings are respectively: 1 is an inner pump cylinder, 2 is an outer pump cylinder, 3 is a sliding core, 4 is a ball seat, 5 is a fixed valve ball, 6 is an annular flow passage, 7 is a bore, 8 is an inner boss, 9 is an installation cavity, 10 is an open slot, 11 is a flow hole, 12 is a notch, 13 is a trapping cavity, 14 is a spiral slot, 15 is a stop block, 16 is a light hollow valve ball, and 17 is an inner flow passage.

Detailed Description

The present utility model is not limited by the following examples, and specific embodiments can be determined according to the technical scheme and practical situations of the present utility model.

In the present utility model, for convenience of description, the description of the relative positional relationship of each component is described according to the layout manner of fig. 1 of the specification, for example: the positional relationship of the front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of the drawings of the specification.

The utility model is further described below with reference to examples and figures:

Example 1: as shown in fig. 1, 2 and 3, the flushing device for concentric tube jet pump operation comprises an inner pump cylinder 1, an outer pump cylinder 2, a sliding core 3, a ball seat 4 and a fixed valve ball 5, wherein the outer pump cylinder 2 is arranged outside the inner pump cylinder 1, an annular flow passage 6 is arranged between the inner pump cylinder 1 and the outer pump cylinder 2, the upper part of the ball seat 4 is positioned between the inner pump cylinder 1 and the lower part of the outer pump cylinder 2, a through hole cavity 7 is arranged in the middle of the ball seat 4, the middle of the hole cavity 7 is a conical hole with a large inner diameter and a small outer diameter, the fixed valve ball 5 is positioned in the conical hole, an installation cavity 9 which is vertically through is arranged in the middle of the inner pump cylinder 1, an inner boss 8 is integrally arranged on the inner side of the lower part of the inner pump cylinder 1, the middle of the inner boss 8 is provided with a mounting hole which is communicated with the mounting cavity 9, the lower end of the sliding core 3 is positioned in the mounting hole after passing through the mounting cavity 9, an inner flow passage 17 which is vertically through the middle of the sliding core 3, the upper end of the inner flow passage 17 is provided with a conical hole with a large inner diameter and a small inner diameter, the inner diameter and the lower inner diameter on the inner wall of the sliding core 3 is provided with an opening 10, the inner diameter groove 10 is correspondingly arranged on the inner diameter of the inner side of the inner flow passage 3, the inner flow passage 10 is correspondingly provided with a cut-off hole 11, the inner diameter of the inner diameter groove 11 is correspondingly positioned at the inner side of the inner flow passage 11, and the inner side of the inner flow passage 11 of the inner flow passage 3, and the inner diameter 11 is provided with a corresponding to the inner hole 11, and the inner diameter 11 of the inner diameter 11 through the inner hole 11 through the upper opening 11 through the inner hole 11 through the position of the upper opening through the upper opening and 3, and the position of the upper opening through the position of the inner hole 11.1.

When cleaning is needed, the fixed valve ball 5 is firstly put into the sliding core 3, fluid is introduced into the installation cavity 9, the fluid is accelerated through the cone Kong Shouzhai of the sliding core 3, then enters the lower part of the inner flow channel 17 through the interception cavity 13, the liquid is further downwards flushed out, besides downward impact flow, the space around the cavity 7 and the fixed valve ball 5 is cleaned, then enters the outer flow channel through the backflow channel and is discharged, when the sliding core 3 is needed to be discharged, the fluid is introduced into the annular flow channel 6, the sliding core 3 is pushed upwards through the lifting assembly under the action of the fluid, and the sliding core 3 is pushed out of the inner pump cylinder 1 for next operation. The lower end of the utility model is closer to the hole cavity 7, and the water flow enters the hole cavity 7, the speed reduction is small, the impact force is large, so the effect of flushing the gap between the fixed valve ball 5 and the hole cavity 7 is better.

The flushing device for the concentric tube jet pump operation can be further optimized or/and improved according to actual needs:

Example 2: as shown in fig. 1 and 2, the inner side of the lower part of the inner flow passage 17 corresponding to the lower side of the interception cavity 13 is provided with a spiral groove 14. The liquid is accelerated and rotated to have rotary flow, the cavity 7 and the fixed valve ball 5 are washed in multiple directions, and the cleaning effect is improved.

Example 3: as shown in fig. 1 and 2, the lifting assembly comprises a stop 15 and a light hollow valve ball 16, the stop 15 is fixedly arranged on the inner side of the interception cavity 13, and the light hollow valve ball 16 can be blocked by the stop 15 and positioned in the interception cavity 13. When the sliding core 3 is required to be discharged, fluid is introduced through the annular flow channel 6, under the action of the fluid, the light hollow valve ball 16 is small in density, and then floats to the upper port of the interception cavity 13 in the liquid, the upper port of the interception cavity 13 is sealed under the further upward extrusion action of the liquid, so that the liquid integrally acts on the sliding core 3 to push the sliding core 3 to integrally ascend, and the sliding core is convenient to discharge.

Example 4: as shown in fig. 3, six open slots 10 are uniformly distributed on the inner wall of the lower side of the sliding core 3 along the circumference. The provision of a plurality of open grooves 10 facilitates the discharge of liquid and the entry of liquid when pushing out the slide core 3.

The technical characteristics form the embodiment of the utility model, have stronger adaptability and implementation effect, and can increase or decrease unnecessary technical characteristics according to actual needs so as to meet the requirements of different situations.

Claims (5)

1. The utility model provides a flushing device of concentric tube jet pump operation, a serial communication port, including interior pump barrel, outer pump barrel, sliding core, ball seat and fixed valve ball, be equipped with outer pump barrel outward in the interior pump barrel, be the annular space runner between interior pump barrel and the outer pump barrel, ball seat upper portion is located between interior pump barrel and the outer pump barrel lower part, the ball seat middle part is equipped with the bore cavity that link up from top to bottom, the bore cavity middle part is the taper hole that big-end-up in the internal diameter, fixed valve ball is located the taper hole, the interior pump barrel middle part is equipped with the installation cavity that link up from top to bottom, the inboard an organic whole in interior boss lower part is equipped with the mounting hole that link up from top to bottom, the mounting hole communicates with the installation cavity, the sliding core lower extreme is located the mounting hole after passing through, the sliding core middle part is equipped with the interior runner that link up from top to bottom and communicates with the installation cavity, the interior runner upper end is big-end taper hole in the internal diameter, be equipped with the open slot along circumference on the inner wall of sliding core downside, the sliding core outside of corresponding to the upper end-up position of each open slot is equipped with the taper hole with the inside and hold-down, the inner boss is equipped with inside the inside and outside the pump barrel that link up through, the bore cavity that link up through from top to bottom, the installation cavity that will link up with the upper end-up with the upper end of the cavity, the upper end of the hollow cavity corresponds with the upper end.

2. The flushing device for concentric tube jet pump operation according to claim 1, wherein the inner side of the lower part of the inner flow passage corresponding to the lower side of the interception chamber is a spiral groove.

3. The flushing device for concentric tube jet pump operation according to claim 1 or 2, characterized in that the lifting assembly comprises a stop and a lightweight hollow valve ball, the stop being fixedly mounted inside the holding-down chamber, the lightweight hollow valve ball being capable of being blocked by the stop in the holding-down chamber.

4. The flushing device for concentric tube jet pump operation according to claim 1 or 2, characterized in that six open grooves are circumferentially and uniformly distributed on the inner wall of the lower side of the sliding core.

5. The flushing device for concentric tube jet pump operation according to claim 3, wherein six open slots are circumferentially and uniformly distributed on the inner wall of the lower side of the sliding core.