CN218092956U

CN218092956U - Continuous jet flow blockage removing pipe column for horizontal well

Info

Publication number: CN218092956U
Application number: CN202222125486.4U
Authority: CN
Inventors: 周昌丽; 郑雪军
Original assignee: Cnpc Boshi Technology Tianjin Co ltd
Current assignee: Cnpc Boshi Technology Tianjin Co ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2022-12-20
Anticipated expiration: 2032-08-12

Abstract

The utility model belongs to the technical field of horizontal well pipeline equipment, especially, for stifled tubular column is separated to continuous efflux of horizontal well, the female joint comprises an outer tube, the inside of outer tube is provided with the inner tube, the outside of inner tube is provided with the separation valve, separation valve top is provided with the washing liquid ascending pipe, separation valve bottom is provided with the flight, the one end that the flight is close to the inner tube is provided with the pivot, the surface of outer tube runs through and has seted up the perforation, outer tube internal surface bottom is provided with the bottom and supports the piece, outer tube internal surface top is provided with the top and supports the piece, the inside isolated crown plate that is provided with of outer tube, the outer tube is close to the one end of isolated crown plate and has seted up the slide, the inside slider that is provided with of slide, isolated crown plate one side runs through and is provided with the spring beam, inner tube one side is provided with the suction inlet, the utility model discloses a set up isolated crown plate of slidable and pivoted spiral plate, can reach and prevent energy pollution and reduce corrosion phenomena and take place.

Description

Continuous jet flow blockage removing pipe column for horizontal well

Technical Field

The utility model relates to a horizontal well pipeline equipment technical field specifically is horizontal well continuous jet flow unblocking tubular column.

Background

The horizontal well is a special well with the maximum well inclination angle reaching or approaching ninety degrees and maintaining a horizontal well section with a certain length in a target zone, sometimes for a certain special requirement, the well inclination angle can exceed ninety degrees and is upwards tilted, generally, the horizontal well is suitable for a thin oil-gas zone or a fractured oil-gas reservoir, the exposed area of the oil-gas zone is increased, the horizontal well technology integrates some advanced technical achievements of various disciplines and is known as a major breakthrough in the development process of the oil industry, and the application requirements are mainly embodied in four aspects: one is that the oil and gas yield of the fractured formation is greatly improved by penetrating through a natural fracture zone; secondly, the oil gas productivity of a low-hole and compact reservoir is improved by increasing the contact area between the well hole and the stratum and penetrating through a zone with better permeability; thirdly, controlling the drilling trend according to the oil-gas-water distribution to reduce water coning and gas coning so as to improve the oil-gas recovery ratio of a single well; and fourthly, the exploration and development efficiency is improved, and the average density of the drilled well can be greatly reduced for many types of oil reservoirs by drilling the horizontal well.

The prior art has the following problems:

1. the internal part of the existing horizontal well can carry silt to enter the horizontal well when energy is exploited, cleaning fluid needs to be injected into the horizontal well periodically to clean the silt and remove blockage, and energy raw materials in the perforation still can be communicated with a pipeline in the cleaning process, so that the energy raw materials can be polluted, and the silt in the perforation area is solidified at the bottom of the inner surface of the pipeline, so that the silt is difficult to clean by flushing;

2. the existing pipeline washing for the horizontal well is mostly suitable for a continuous jet type washing mode, and due to the special structure of the horizontal well, the washing liquid can directly fall to the bending part of the pipeline when being injected into the pipeline, the pipeline can be impacted by high pressure of the washing liquid without a corresponding buffer structure, and the pipeline can be corroded after being used for a long time.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a stifled tubular column is separated to continuous efflux of horizontal well has solved the washing stifled problem of separating and the washing liquid impact problem that exists now.

In order to achieve the above object, the utility model provides a following technical scheme: horizontal well continuous jet flow plug removal tubular column, including the outer tube, the inside of outer tube is provided with the inner tube, the outside of inner tube is provided with the separation valve, separation valve top is provided with the washing liquid injection tube, separation valve bottom is provided with the spiral plate, the one end that the spiral plate is close to the inner tube is provided with the pivot, the surface of outer tube is run through and has been seted up the perforation, outer tube internal surface bottom is provided with the bottom and supports the piece, outer tube internal surface top is provided with the top and supports the piece, the inside isolated crown plate that is provided with of outer tube, the outer tube is close to the one end of isolated crown plate and has seted up the slide, the inside slider that is provided with of slide, isolated crown plate one side is run through and is provided with the spring beam, inner tube one side is provided with the suction inlet.

As a preferred technical scheme of the utility model, washing liquid injection pipe and separation valve intercommunication, the separation valve is the check valve, the surface size of spiral plate and the internal surface size phase-match of outer tube, the spiral plate rotates through pivot and inner tube to be connected.

As an optimized technical scheme of the utility model, the quantity of perforation is a plurality of groups, a plurality of groups the perforation is arranged for the outer tube surface is annular array.

As an optimal technical scheme of the utility model, the bottom is to piece and outer tube fixed connection, the top is to piece and outer tube fixed connection.

As a preferred technical scheme of the utility model, the external diameter size of isolated crown plate and the internal diameter size phase-match of outer tube, the internal surface size of slide and the external surface size phase-match of slider, slider and isolated crown plate fixed connection, isolated crown plate passes through slider and outer tube sliding connection, isolated crown plate cup joints with the inner tube.

As a preferred technical scheme of the utility model, the quantity of slider is two sets of, and is two sets of the slider is axial symmetry distribution about the central line of isolated crown plate, spring beam and isolated crown plate sliding connection, spring beam and inner tube fixed connection.

As an optimal technical scheme of the utility model, isolated crown plate passes through spring beam and inner tube elastic connection, the quantity of spring beam is two sets of, and is two sets of the spring beam is axisymmetric distribution about the horizontal center line of inner tube.

Compared with the prior art, the utility model provides a stifled tubular column is separated to continuous efflux of horizontal well possesses following beneficial effect:

1. the continuous jet flow blockage relieving pipe column of the horizontal well comprises an isolation ring plate, wherein the isolation ring plate is sleeved with an inner pipe, the isolation ring plate normally slides inside the outer pipe under the sliding action between a sliding block and a sliding way on two sides of the isolation ring plate, the isolation ring plate is the same as the inner diameter of the outer pipe, a plurality of groups of perforation holes are blocked when the isolation ring plate slides, pollution to unexplored energy is prevented when cleaning liquid is cleaned, the isolation ring plate is influenced by the tension of a spring rod fixed on two sides of the inner pipe, the elastic effect of the spring rod pulls the isolation ring plate to reset after cleaning is finished, the perforation holes are communicated again, the moving effect of the isolation ring plate is that the isolation ring plate is pressed by the pressure of the cleaning liquid filled inside the outer pipe to move instead of automatic movement, a bottom support block is arranged at the bottom of the outer pipe, the isolation ring plate and the bottom support block are tightly closed when the isolation ring plate is not cleaned, so that silt is prevented from entering the front end of the outer pipe, silt is flushed from the bottom of the outer pipe by the water pressure, silt is blocked, and silt is blocked in the whole set of the inner pipe, and silt is cleaned, and silt is just driven by the top of the inner pipe.

2. This stifled tubular column is separated to continuous efflux of horizontal well, through at the inside spiral plate that sets up of outer tube, and the external diameter size of spiral plate just matches the outer tube, make the washing liquid that gets into from separation valve port directly contact with the spiral plate at the in-process of gushing into, under the cushioning effect of spiral plate, the bottom of the steady inflow outer tube of washing liquid, prevent to have the washing liquid direct impact of corrosivity department of bending of outer tube, the impact force of washing liquid has been alleviated like this, the normal life of outer tube has been prolonged, and the holistic rotation effect of spiral plate is realized through the pivot of inner tube surface setting, alleviate the corruption that the flush fluid led to the fact spiral plate itself when the spiral plate rotates, make the normal working life of spiral plate increase.

Drawings

FIG. 1 is an internal schematic view of the overall structure of the present invention;

fig. 2 is a schematic top view of the spiral plate mounting structure of the present invention;

FIG. 3 is a schematic view of the whole end face structure of the isolation ring plate of the present invention;

fig. 4 is a schematic side view of the internal structure of the structural outer tube of the present invention.

In the figure: 1. an outer tube; 2. an inner tube; 3. blocking the valve; 4. a cleaning liquid injection pipe; 5. a spiral plate; 6. a rotating shaft; 7. perforating; 8. a bottom resisting block; 9. a top resisting block; 10. an isolation ring plate; 11. a slideway; 12. a slider; 13. a spring lever; 14. a suction opening.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, in this embodiment: the continuous jet flow blockage removing tubular column for the horizontal well comprises an outer tube 1, namely a horizontal well outer sleeve; the inner pipe 2 is arranged in the outer pipe 1 and used for transporting energy to the ground surface; the outside of the inner pipe 2 is provided with a blocking valve 3 for preventing blowout; a cleaning liquid injection pipe 4 is arranged at the top of the blocking valve 3 and used for injecting high-pressure cleaning liquid into the outer pipe 1; the bottom of the separation valve 3 is provided with a spiral plate 5 for buffering the cleaning liquid and reducing the impact corrosion of the cleaning liquid to the inner wall of the outer pipe 1; one end of the spiral plate 5 close to the inner tube 2 is provided with a rotating shaft 6 for realizing the rotation of the spiral plate 5; the surface of the outer pipe 1 is provided with a perforation 7 in a penetrating way for realizing the collection of energy; the bottom of the inner surface of the outer pipe 1 is provided with a bottom resisting block 8 which is used for resisting silt and forming a partition between subsequent devices; the top of the inner surface of the outer tube 1 is provided with a top abutting block 9 for limiting a subsequent device; an isolation annular plate 10 is arranged in the outer pipe 1 and used for realizing the communication and blocking effects of the port of the perforation 7; one end of the outer pipe 1 close to the isolation ring plate 10 is provided with a slideway 11 for realizing stable sliding; a slide block 12 is arranged in the slide way 11 and used for realizing sliding; a spring rod 13 is arranged on one side of the isolation ring plate 10 in a penetrating mode and used for driving the isolation ring plate 10 to reset, and the communication of the port of the perforation 7 is achieved; a suction port 14 is arranged at one side of the inner pipe 2 and is used for collecting energy or silt and is brought to the ground surface through the inner pipe 2.

In the embodiment, the cleaning liquid injection pipe 4 is communicated with the separation valve 3, the separation valve 3 is a one-way valve, the size of the outer surface of the spiral plate 5 is matched with the size of the inner surface of the outer pipe 1, the spiral plate 5 is rotatably connected with the inner pipe 2 through the rotating shaft 6, the separation valve 3 protects a horizontal well, the spiral plate 5 buffers and blocks the cleaning liquid to prevent the outer pipe 1 from being impacted and corroded, the rotating shaft 6 realizes the rotating effect of the spiral plate 5, and the service life of the spiral plate 5 is ensured; the number of the perforation holes 7 is a plurality of groups, the plurality of groups of perforation holes 7 are arranged in an annular array relative to the surface of the outer pipe 1, and the plurality of groups of perforation holes 7 correspond to different energy collecting openings; the bottom resisting block 8 is fixedly connected with the outer pipe 1, the top resisting block 9 is fixedly connected with the outer pipe 1, the bottom resisting block 8 and the isolation ring plate 10 form a whole circle to isolate silt, and the top resisting block 9 limits the isolation ring plate 10 to prevent overlarge movement amount; the outer diameter of the isolation ring plate 10 is matched with the inner diameter of the outer pipe 1, the inner surface of the slide way 11 is matched with the outer surface of the sliding block 12, the sliding block 12 is fixedly connected with the isolation ring plate 10, the isolation ring plate 10 is in sliding connection with the outer pipe 1 through the sliding block 12, the isolation ring plate 10 is sleeved with the inner pipe 2, the good blocking effect on the perforation 7 is achieved due to the matching size of the isolation ring plate 10 and the outer pipe 1, the isolation ring plate 10 moves under the sliding effect of the sliding block 12 and the slide way 11, and communication and blocking of the perforation 7 are achieved; the number of the sliding blocks 12 is two, the two groups of sliding blocks 12 are distributed in axial symmetry about the central line of the isolation ring plate 10, the spring rods 13 are connected with the isolation ring plate 10 in a sliding mode, the spring rods 13 are fixedly connected with the inner pipe 2, the two groups of sliding blocks 12 realize the stable movement of the isolation ring plate 10, and the spring rods 13 perform resetting operation on the isolation ring plate 10; isolation crown plate 10 passes through spring beam 13 and inner tube 2 elastic connection, and the quantity of spring beam 13 is two sets of, and two sets of spring beam 13 are axisymmetric about the horizontal center line of inner tube 2 and distribute, and two sets of spring beam 13 realize the stable elasticity of isolation crown plate 10 effect that resets.

The utility model discloses a theory of operation and use flow: an operator injects high-pressure cleaning liquid into the port of the cleaning liquid injection pipe 4, the cleaning liquid flows through the separation valve 3 and flows into the inner part of the outer pipe 1, the cleaning liquid directly falls on the surface of the spiral plate 5 after passing through the separation valve 3, under the action of the rotating shaft 6 and the cleaning hydraulic pressure, the spiral plate 5 buffers the cleaning liquid and rotates relative to the inner pipe 2, so that the cleaning liquid can stably fall on the bending part of the outer pipe 1, the impact corrosion of the cleaning liquid on the spiral plate 5 is relieved by the rotation of the spiral plate 5, the phenomena of erosion and corrosion failure of the outer pipe 1 caused by long-term cleaning work are prevented, the whole service life of the outer pipe 1 is prolonged, and then the cleaning liquid flows to the end of the isolation ring plate 10, and the isolation ring plate 10 slides on the inner surface of the outer pipe 1 due to the stable sliding effect between the slide rail 11 and the slide block 12 under the pressure of the cleaning liquid, and the isolation ring plate 10 is matched with the bottom abutting block 8, so that silt on the other side of the isolation ring plate 10 is isolated, the isolation ring plate 10 slides to be clamped with the top abutting block 9, the perforation 7 on the surface of the outer pipe 1 is isolated, the cleaning fluid is prevented from polluting oil-gas energy which is cut off and enters the perforation 7, the cleaning fluid enters the other side of the isolation ring plate 10 and then rolls the silt until the cleaning fluid is taken to a port of a suction port 14, the cleaning fluid is guided to the outside of the ground surface by the inner pipe 2, the whole cleaning process is realized, the silt is prevented from being stored in the outer pipe 1 to cause blockage, after the cleaning work is finished, the spring rods 13 on the two sides of the inner pipe 2 elastically strain the isolation ring plate 10, the reset of the isolation ring plate 10 is realized, and the normal work requirement of the horizontal well is met.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Horizontal well continuous jet flow plug removal tubular column, including outer tube (1), its characterized in that: the inside of outer tube (1) is provided with inner tube (2), the outside of inner tube (2) is provided with separation valve (3), separation valve (3) top is provided with washing liquid injection pipe (4), separation valve (3) bottom is provided with spiral plate (5), the one end that spiral plate (5) are close to inner tube (2) is provided with pivot (6), perforation (7) have been seted up in running through on the surface of outer tube (1), outer tube (1) internal surface bottom is provided with bottom and supports piece (8), outer tube (1) internal surface top is provided with top and supports piece (9), outer tube (1) inside is provided with isolated crown plate (10), outer tube (1) is close to the one end of isolated crown plate (10) and has been seted up slide (11), slide (11) inside is provided with slider (12), isolated crown plate (10) one side runs through and is provided with spring beam (13), inner tube (2) one side is provided with suction inlet (14).

2. The horizontal well continuous jet flow plug removal string according to claim 1, which is characterized in that: the cleaning solution injection pipe (4) is communicated with the blocking valve (3), the blocking valve (3) is a one-way valve, the size of the outer surface of the spiral plate (5) is matched with the size of the inner surface of the outer pipe (1), and the spiral plate (5) is rotatably connected with the inner pipe (2) through a rotating shaft (6).

3. The horizontal well continuous jet flow plug removal string according to claim 1, which is characterized in that: the number of the perforation holes (7) is a plurality of groups, and the plurality of groups of the perforation holes (7) are arranged in an annular array relative to the surface of the outer pipe (1).

4. The horizontal well continuous jet flow plug removal string according to claim 1, which is characterized in that: the bottom abutting block (8) is fixedly connected with the outer pipe (1), and the top abutting block (9) is fixedly connected with the outer pipe (1).

5. The continuous jet flow blockage relieving pipe column for the horizontal well according to claim 1, which is characterized in that: the outer diameter of isolated crown plate (10) and the inner diameter size phase-match of outer tube (1), the internal surface size of slide (11) and the outer surface size phase-match of slider (12), slider (12) and isolated crown plate (10) fixed connection, isolated crown plate (10) are through slider (12) and outer tube (1) sliding connection, isolated crown plate (10) cup joint with inner tube (2).

6. The horizontal well continuous jet flow plug removal string according to claim 1, which is characterized in that: the quantity of slider (12) is two sets of, two sets of slider (12) are axis symmetry about the central line of insulating crown plate (10) and distribute, spring beam (13) and insulating crown plate (10) sliding connection, spring beam (13) and inner tube (2) fixed connection.

7. The horizontal well continuous jet flow plug removal string according to claim 1, which is characterized in that: the isolation ring plate (10) is elastically connected with the inner tube (2) through spring rods (13), the number of the spring rods (13) is two, and the two groups of the spring rods (13) are in axial symmetry distribution relative to the horizontal center line of the inner tube (2).