CN219327522U

CN219327522U - Multifunctional sand washing circulation valve

Info

Publication number: CN219327522U
Application number: CN202223545110.5U
Authority: CN
Inventors: 瞿晓文; 陈继祥; 张振军; 宋一鸣; 张成栋
Original assignee: Panjin Tenghui Petroleum Technology Co ltd
Current assignee: Panjin Tenghui Petroleum Technology Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-07-11
Anticipated expiration: 2032-12-30

Abstract

The utility model relates to a multifunctional sand washing circulation valve, which comprises a central pipe, a wide-diameter upper joint, a wide-diameter lower joint and a circulation sleeve, wherein a radial through hole is formed in the lower part of the circulation sleeve, and the technical key points are as follows: the circulating sleeve and the central tube, the upper and lower connectors of the wide diameter jointly encircle to form an annular overcurrent cavity, an annular sliding cavity is arranged in the upper connector of the wide diameter, a plurality of strip-shaped sliding blocks of concentric sliding rings and end faces of the concentric sliding rings are arranged in the annular sliding cavity, a screwing ring is embedded on the outer peripheral surface of the upper connector of the wide diameter, the screwing ring is in threaded connection with the top surfaces of the strip-shaped sliding blocks, an annular check ring is arranged in the annular overcurrent cavity, a plurality of connecting rods are fixed on the end faces of the annular check ring, the other ends of the connecting rods are fixedly connected with the concentric sliding rings, a partition plate is arranged in the middle of the central tube, and upper and lower switching holes are formed in pipelines on two sides of the partition plate. The sand washing pipe column solves the problem that sand washing pipe columns are blocked by sand, blocked by sand and buried by sand in the single positive sand washing or backflushing sand of an oil well, greatly reduces the operation risk and improves the sand washing efficiency.

Description

Multifunctional sand washing circulation valve

Technical Field

The utility model relates to the technical field of sand washing operation of oil wells, in particular to a multifunctional sand washing circulating valve.

Background

In the normal production process of the oil well, sand grains in the cemented loose sandstone stratum can enter the sleeve along with the flow of liquid flow, and are conveyed to the ground along with the liquid flow, and are deposited in the sleeve, and more sand grains in the sleeve accumulate along with the time, so that the normal production of the oil well is influenced, and the oil well productivity is recovered by the sand washing operation of the oil well.

At present, conventional normal sand washing and backflushing are usually adopted in oil field oil well sand washing operation, but in the process of the conventional normal sand washing and backflushing operation, sand washing needs to be stopped when a single pipe is connected, and the operation mode easily causes sand washing pipe columns to be blocked by sand, blocked by sand and buried by sand, and also seriously influences sand washing efficiency.

Disclosure of Invention

The utility model aims to provide a multifunctional sand washing circulation valve which is reasonable in structure and reliable in use, solves the problem that a sand washing pipe column is blocked by sand, blocked by sand and buried by sand in a single positive sand washing or backflushing sand of an oil well, greatly reduces operation risks and improves sand washing efficiency.

The technical scheme of the utility model is as follows:

the utility model provides a multi-functional sand washing circulation valve, includes the center tube, with the wide footpath upper junction and the wide footpath lower junction that the center tube both ends are connected, suit in the outside circulation cover of center tube, circulation cover lower part is equipped with radial through-hole, its technical essential is: the two ends of the circulating sleeve are connected with the upper and lower wide-diameter connectors, the circulating sleeve, the central pipe and the upper and lower wide-diameter connectors jointly encircle to form an annular overcurrent cavity, an annular sliding cavity is arranged in the upper wide-diameter connector, a plurality of strip-shaped sliding blocks are arranged on the end faces of the concentric sliding blocks uniformly, a screwing ring is embedded in the outer peripheral face of the upper wide-diameter connector, the screwing ring is in threaded connection with the top face of each strip-shaped sliding block, an annular check ring concentric with the annular overflow cavity is arranged in the annular overcurrent cavity, a plurality of connecting rods are fixed on the end faces of the annular check ring, facing the upper wide-diameter connector, of the other ends of the connecting rods are fixedly connected with the concentric sliding blocks after passing through the end faces of the upper wide-diameter connector, a partition plate is arranged in the middle of the central pipe, an upper switching hole and a lower switching hole are respectively arranged on pipelines on two sides of the central pipe, the lower stroke cut-off position of the annular check ring is located between the radial through hole and the lower switching hole, and the upper stroke cut-off position of the annular check ring is located between the upper switching hole and the lower switching hole.

According to the multifunctional sand washing circulating valve, the annular sealing ring is arranged on the end face of the wide-diameter upper joint, the through hole corresponding to the connecting rod is formed in the annular sealing ring, and the wide-diameter upper joint is sealed through the annular sealing ring.

According to the multifunctional sand washing circulating valve, the sealing layers are arranged on the inner annular surface and the outer annular surface of the annular check ring and are in close contact with the inner cavity wall and the outer cavity wall of the annular overflow cavity, and the sealing performance is good.

According to the multifunctional sand washing circulating valve, the plurality of anti-falling edges are uniformly arranged on the outer circumferential surface of the screwing ring, so that the rotary operation is facilitated.

The multifunctional sand washing circulating valve is characterized in that the wide-diameter upper connector is of a split structure and consists of a connector body connected with the central pipe and a concentric end cover buckled at the outer end of the connector body, and the screwing ring is positioned between the concentric end cover and the opposite end of the connector body.

In the multifunctional sand washing circulating valve, the number of the upper switching holes and the lower switching holes is two, and the upper switching holes and the lower switching holes are symmetrically distributed along the axial lead of the central tube.

The beneficial effects of the utility model are as follows:

the annular retainer ring is driven to move in the annular overflow cavity through the cooperation of the screwing ring and the strip-shaped sliding block, when the annular retainer ring is positioned between the radial through hole and the lower switching hole, the liquid outside the circulation sleeve is blocked from entering the central pipe, the state is normal sand washing, the liquid enters the upper part of the central pipe through the wide-diameter upper joint, then is turned back to the lower part of the central pipe through the upper switching hole, the annular overflow cavity and the lower switching hole, and finally is injected into external equipment (sand washing oil pipe) through the wide-diameter lower joint; when the oil pipe needs to be connected with a single pipe, the liquid enters the annular overflow cavity through the radial through hole by screwing the annular ring-shaped baffle ring between the upper and lower switching holes, enters the lower part of the central pipe through the lower switching hole, and finally is injected into external equipment (sand washing oil pipe) through the wide-diameter lower joint. In the whole process, the pump is not required to be stopped, so that suspended sand accumulation is avoided, the problem that a sand washing pipe column is blocked by sand, blocked by sand and buried by sand in single normal sand washing or backflushing sand of an oil well is solved, the normal sand washing function, the sand washing function under the single oil pipe connection operation and the switching of the normal sand washing function and the sand washing function can be realized, the operation risk is greatly reduced, and the sand washing efficiency is improved.

Drawings

FIG. 1 is a schematic diagram of a normal sand washing condition of the present utility model;

FIG. 2 is a schematic diagram of the sand washing state under the single tubing operation of the present utility model;

fig. 3 is a schematic view of the annular retainer ring, connecting rod, concentric slip ring and bar-shaped slider of fig. 1.

In the figure: 1. concentric end cap, 2. Joint body, 3. Screw ring, 4. Bar slide block, 5. Concentric slide ring, 6. Connecting rod, 7. Circulation sleeve, 8. Upper switching hole, 9. Lower switching hole, 10. Annular retainer ring, 11. Radial through hole, 12. Annular through-flow cavity, 13. Wide diameter lower joint, 14. Annular seal ring, 15. Anti-slip edge, 16. Annular slip cavity, 17. Baffle, 18. Central tube, 19. Sealing layer.

Detailed Description

The utility model will be described in detail with reference to the drawings.

As shown in fig. 1 to 3, the multifunctional sand washing circulation valve comprises a central pipe 18, a wide-diameter upper joint and a wide-diameter lower joint 13 which are connected with two ends of the central pipe 18, and a circulation sleeve 7 sleeved outside the central pipe 18. The lower part of the circulating sleeve 7 is provided with a radial through hole 11.

Wherein, the two ends of the circulating sleeve 7 are connected with the upper and lower connectors with wide diameter, and the circulating sleeve 7, the central tube 18 and the upper and lower connectors with wide diameter jointly surround to form an annular overcurrent cavity 12. The wide-diameter upper joint is internally provided with an annular sliding cavity 16, the annular sliding cavity 16 is internally provided with a concentric sliding ring 5 and a plurality of strip-shaped sliding blocks 4 uniformly arranged on the end face of the concentric sliding ring 5, the outer peripheral face of the wide-diameter upper joint is embedded with a screwing ring 3 corresponding to the position of the strip-shaped sliding blocks 4, and the screwing ring 3 is in threaded connection with the top faces of the strip-shaped sliding blocks 4. The annular overcurrent cavity 12 is internally provided with an annular check ring 10 concentric with the annular overcurrent cavity, the end face of the annular check ring 10 facing the wide-diameter upper joint is fixedly provided with a plurality of connecting rods 6, and the other ends of the connecting rods 6 penetrate through the end face of the wide-diameter upper joint and then are fixedly connected with the concentric slip rings 5. The middle part of the central tube 18 is provided with a partition plate 17, the central tube 18 is respectively provided with an upper switching hole 8 and a lower switching hole 9 on pipelines at two sides of the partition plate 17, the lower stroke stop position of the annular check ring 10 is positioned between the radial through hole 11 and the lower switching hole 9, and the upper stroke stop position of the annular check ring 10 is positioned between the upper switching hole 8 and the lower switching hole 9.

In this embodiment, the end face of the wide-diameter upper joint is provided with an annular sealing ring 14, the annular sealing ring 14 is provided with a through hole corresponding to the connecting rod 6, and the sealing of the wide-diameter upper joint is realized through the annular sealing ring 14. The inner ring surface and the outer ring surface of the annular retainer ring 10 are respectively provided with a sealing layer 19, and the sealing layers 19 are tightly contacted with the inner cavity wall and the outer cavity wall of the annular overflow cavity 12, so that the sealing performance is good. The wide-diameter upper joint is of a split structure and consists of a joint body 2 connected with a central pipe 18 and a concentric end cover 1 buckled at the outer end of the joint body 2, and the screwing ring 3 is positioned between the concentric end cover 1 and the opposite end of the joint body 2. The number of the upper switching holes 8 and the lower switching holes 9 is two, and the upper switching holes and the lower switching holes are symmetrically distributed along the axial line of the central tube 18. The outer circumferential surface of the screwing ring 3 is uniformly provided with a plurality of anti-falling ribs 15 so as to facilitate the rotation operation.

Working principle:

during normal sand washing, the screwing ring 3 is rotated, the strip-shaped sliding block 4 is driven to linearly move, the annular retainer ring 10 is driven to linearly move in the annular overflow cavity 12, when the annular retainer ring 10 is positioned between the radial through hole 11 and the lower switching hole 9, liquid enters the upper part of the central pipe 18 through the wide-diameter upper joint, then is turned back to the lower part of the central pipe 18 through the upper switching hole 8, the annular overflow cavity 12 and the lower switching hole 9, and finally, external equipment (sand washing oil pipe) is injected through the wide-diameter lower joint 13; when the oil pipe needs to be connected with a single pipe, the strip-shaped sliding block 4 is driven to move reversely by reversely rotating the screwing ring 3, the annular retainer ring 10 is driven to move upwards between the upper switching holes 8 and the lower switching holes 9, liquid enters the annular overflow cavity 12 through the radial through holes 11, then enters the lower part of the central pipe 18 through the lower switching holes 9, and finally is injected into external equipment (sand washing oil pipe) through the wide-diameter lower connector 13.

The foregoing describes the embodiments of the present utility model in detail, but the description is only a preferred embodiment of the present utility model and should not be construed as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to fall within the scope of the present utility model.

Claims

1. The utility model provides a multi-functional sand washing circulation valve, includes the center tube, with the wide footpath upper junction and the wide footpath lower junction that the center tube both ends are connected, suit in the outside circulation cover of center tube, circulation cover lower part is equipped with radial through-hole, its characterized in that: the two ends of the circulating sleeve are connected with the upper and lower wide-diameter connectors, the circulating sleeve, the central pipe and the upper and lower wide-diameter connectors jointly encircle to form an annular overcurrent cavity, an annular sliding cavity is arranged in the upper wide-diameter connector, a plurality of strip-shaped sliding blocks are arranged on the end faces of the concentric sliding blocks uniformly, a screwing ring is embedded in the outer peripheral face of the upper wide-diameter connector, the screwing ring is in threaded connection with the top face of each strip-shaped sliding block, an annular check ring concentric with the annular overflow cavity is arranged in the annular overcurrent cavity, a plurality of connecting rods are fixed on the end faces of the annular check ring, facing the upper wide-diameter connector, of the other ends of the connecting rods are fixedly connected with the concentric sliding blocks after passing through the end faces of the upper wide-diameter connector, a partition plate is arranged in the middle of the central pipe, an upper switching hole and a lower switching hole are respectively arranged on pipelines on two sides of the central pipe, the lower stroke cut-off position of the annular check ring is located between the radial through hole and the lower switching hole, and the upper stroke cut-off position of the annular check ring is located between the upper switching hole and the lower switching hole.

2. The multifunction sand washing circulation valve of claim 1, wherein: the end face of the wide-diameter upper joint is provided with an annular sealing ring, and the annular sealing ring is provided with a through hole corresponding to the connecting rod.

3. The multifunction sand washing circulation valve of claim 1, wherein: sealing layers are arranged on the inner ring surface and the outer ring surface of the annular retainer ring, and the sealing layers are in tight contact with the inner cavity wall and the outer cavity wall of the annular overflow cavity.

4. The multifunction sand washing circulation valve of claim 1, wherein: the outer peripheral surface of the screwing ring is uniformly provided with a plurality of anti-falling edges.

5. The multifunction sand washing circulation valve of claim 1, wherein: the wide-diameter upper joint is of a split structure and consists of a joint body connected with a central pipe and a concentric end cover buckled at the outer end of the joint body, and the screwing ring is positioned between the concentric end cover and the opposite end of the joint body.

6. The multifunction sand washing circulation valve of claim 1, wherein: the number of the upper switching holes and the lower switching holes is two, and the upper switching holes and the lower switching holes are symmetrically distributed along the axial lead of the central tube.