CN210598931U

CN210598931U - Switch type sand control screen pipe capable of controlling oil layer liquid to flow into sand control pipe

Info

Publication number: CN210598931U
Application number: CN201921739598.0U
Authority: CN
Inventors: 王超
Original assignee: Huayun Longteng Machinery Manufacturing Co ltd
Current assignee: Huayun Longteng Machinery Manufacturing Co ltd
Priority date: 2019-10-17
Filing date: 2019-10-17
Publication date: 2020-05-22
Anticipated expiration: 2029-10-17

Abstract

The utility model discloses a can control the intraductal switch formula sand control screen pipe of oil reservoir liquid inflow sand control, concretely relates to sand control screen pipe field for oil well, including top connection, self-locking switch, screen pipe group, self-locking switch includes auto-lock spring, self-locking switch sliding sleeve, thrust steel ball, self-locking switch overcoat, self-locking switch seat, auto-locking orbital transfer sliding sleeve, and the upper end of self-locking switch overcoat is connected with the outside of top connection, and the bottom of self-locking switch seat is connected with the swivel, and the top surface and the mutual axial grafting cooperation of self-locking switch sliding sleeve of auto-locking orbital transfer sliding sleeve. The utility model discloses a sealing joint and sliding sleeve under the setting utilize the propulsion dynamics of sealing joint under the hydraulic pressure remote control, through sealing joint jack-up sliding sleeve down to keeping off the passageway that sand filter layer direction promoted to cut off fluid entering oil reservoir to adopt hydraulic pressure mode to implement to open and close the operation to hydraulic pressure program switch, the convenient sealing and the opening of realization oil reservoir, thereby realize controlling the intraductal purpose of oil reservoir liquid inflow sand control.

Description

Switch type sand control screen pipe capable of controlling oil layer liquid to flow into sand control pipe

Technical Field

The utility model relates to a sand control screen pipe technical field for the oil well, more specifically says, the utility model particularly relates to a can control the on-off sand control screen pipe that oil reservoir liquid flowed in the sand control pipe.

Background

Horizontal wells are widely applied to various oil fields at home and abroad as important means for efficiently developing various oil and gas reservoirs, improving the recovery rate and improving the yield of a single well, however, the heel-toe effect and the heterogeneity of the oil reservoir of the horizontal wells cause that the oil reservoir cannot supply liquid to the production section of the horizontal wells in a balanced manner, and as the oil field is developed and enters a high water-cut period, bottom water easily enters from the production section of the horizontal wells in a local mode, so that the productivity of the oil well is reduced, the water content of produced liquid is increased quickly, and even the production is forced to stop, which is a common problem in the development process of the horizontal wells in the world.

Patent 201310471568.7 provides a take layering oil production tubular column of rotatory sliding sleeve switch, realizes the multilayer of vertical well, inclined shaft and closes to adopt and water exploration water shutoff, and this patent can realize that the tubular column accomplishes the construction of separating reservoir oil exploitation switching-over many times, has practiced thrift the process, utilizes the outer tube to suppress control layering switch, and control method is simple and convenient, but this patent is not suitable for horizontal well oil exploitation and water exploration water shutoff operation because: the rotary sliding sleeve switch and the sand control screen pipe are two independent tools, and are connected and sealed through double threads of the inner pipe and the outer pipe, but the horizontal well needs a large number of the switches and the screen pipes, the connection of the switches and the screen pipes increases the workload, and the reliability of the double-thread connection seal cannot meet the requirement; secondly, the patent uses a simplified control method that the outer pipe is pressed once and all the layered switches are reversed simultaneously, each layer of switches is set to be in a proper initial opening and closing combined state before entering the well, and the switches are adjusted to be in an expected opening and closing combined state through multiple pressing, but the quantity of the switches and sieve pipes needed to be put into the horizontal well is large, the opening and closing combined state is very complex, and meanwhile, the reversing control method cannot meet the requirements.

In order to solve the problems, a switch type sand control screen pipe is disclosed in the patent application publication No. CN207144910U, referring to the attached drawing 5 of the specification, in the application, a self-locking switch component is integrated with the screen pipe, so that the sand control screen pipe has effective sand control capability and larger pipe wall leakage area, and is suitable for developing a bottom water reservoir horizontal well; the self-locking orbital transfer sliding sleeve only performs circumferential rotation motion when opening and closing actions are performed, sealing parts of the self-locking orbital transfer sliding sleeve can meet sealing requirements by using O-shaped sealing rings, friction force of the sealing parts is small when the actions are performed, the motion of each moving component is guaranteed to be performed in place, the abrasion of the sealing parts is small, and good sealing performance can be still kept after opening and closing are performed for many times.

However, the above technical solutions still have disadvantages in practical use: this switch type sand control screen pipe has only realized the self-locking function to the screen pipe, and the inside water layer of effectual control oil reservoir can not flow into the sand control intraductally, can not layering or segment control produce the flow of liquid, leads to the too big messenger fluid quality of moisture in the output liquid to descend, need carry out the oil water separation of a large amount of expense reply later stages, causes operation number of times to increase, expense rising, oil well utilization ratio low in addition.

It is therefore desirable to provide a low cost, open-shut sand screen that controls the flow of reservoir fluids into the sand screen.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above defects of the prior art, the embodiment of the utility model provides a can control the on-off sand control screen pipe that oil reservoir liquid flows into the sand control pipe, through setting up sealing joint and sliding sleeve down, utilize the propulsion dynamics of sealing joint under the hydraulic pressure remote control, through lower sealing joint jack-up sliding sleeve to keep off the passageway that the sand filter layer direction promoted the cutting fluid got into the oil reservoir, so that adopt hydraulic mode to open and close the operation to hydraulic program switch implementation, the convenient realization oil reservoir seals and opens, thereby realize the purpose that control oil reservoir liquid flows into the sand control pipe; additionally, the utility model discloses an installation of change on sand control screen pipe keeps off the sand filter layer, can play the secondary sand removal and filter, and the secondary sand removal is carried out in the filtrating hole on cooperation screen pipe protection tube surface and is filtered, improves the filter effect of this sand control screen pipe, and the screen pipe protection tube can effectually prevent this sand control screen pipe motion in-process of marcing, and oil well casing wall grit improves its life to the wearing and tearing that keep off the sand filter layer, reduces the maintenance cost to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a switch type sand control screen pipe capable of controlling oil layer liquid to flow into a sand control pipe comprises an upper joint, a self-locking switch and a screen pipe, wherein the self-locking switch comprises a self-locking spring, a self-locking switch sliding sleeve, a thrust steel ball, a self-locking switch jacket, a self-locking switch base and a self-locking orbital transfer sliding sleeve, the upper end of the self-locking switch jacket is fixedly connected with the outer side of the upper joint, the self-locking spring, the self-locking switch sliding sleeve and the thrust steel ball are movably arranged inside the self-locking switch jacket, the top end of the self-locking switch base is fixedly connected with the bottom end of the self-locking switch jacket, the bottom end of the self-locking switch base is fixedly connected with a rotating ring, the self-locking orbital transfer sliding sleeve is movably arranged inside the self-locking switch base, the top surface of the self-locking, the utility model discloses a sand screen pipe, including swivel, sand blocking filter layer, screen pipe protection pipe, screen pipe inner tube, screen pipe, sliding sleeve, lower sealing joint, screen pipe and sliding sleeve's outside activity has been cup jointed to the bottom surface fixed mounting of swivel, the outside of sand blocking filter layer has cup jointed the screen pipe protection pipe, the inside movable mounting that keeps off the sand filter layer has track cotter pipe, the other end fixed mounting of track cotter pipe has concentric bearing pipe, concentric bearing pipe activity cup joints with the screen pipe outside, the screen pipe is located the inside of track cotter pipe, the inside fixed mounting of screen pipe has the screen pipe inner tube, the.

In a preferred embodiment, a sliding sleeve convex ring is fixedly sleeved on the outer side of the self-locking switch sliding sleeve, and a ball seat is arranged on the surface of the self-locking switch sliding sleeve.

In a preferred embodiment, wedge-shaped sliding rails are uniformly distributed on the surface of the inner wall of the self-locking orbital transfer sliding sleeve, the wedge-shaped sliding rails and the self-locking switch sliding sleeve form axial insertion and circumferential transposition matching, and a plurality of self-locking orbital transfer sliding sleeve through holes are formed in the bottom end of the self-locking orbital transfer sliding sleeve.

In a preferred embodiment, the outer side of the screen pipe inner pipe is fixedly wound with a spiral rib, and the surface of the screen pipe inner pipe is fixedly sleeved with an annular protrusion and is positioned at the bottom end of the spiral rib.

In a preferred embodiment, the swivel can rotate freely, and the inner sieve tube of the swivel and the surface of the swivel are provided with through holes, and the through holes are the same in size and are located on the same horizontal plane.

In a preferred embodiment, the sieve tube protection tube wraps the rotary ring, the sand blocking filter layer and the sliding sleeve on the inner side, a cavity is arranged on the inner side of the sieve tube protection tube and the outer sides of the rotary ring and the sand blocking filter layer, and a plurality of sand filtering through holes are formed in the surface of the sieve tube protection tube.

In a preferred embodiment, the lower sealing joint is movably sleeved on the bottom end of the concentric pressure bearing pipe and fixedly connected with the bottom end of the screen pipe inner pipe through threads.

The utility model discloses a technological effect and advantage:

1. the utility model discloses a set up lower sealing joint and sliding sleeve, utilize the propulsion dynamics of hydraulic pressure remote control lower sealing joint, through lower sealing joint jack-up sliding sleeve to keep off the passageway that the sand filter layer direction promoted to cut off the fluid and get into the oil reservoir to adopt the hydraulic mode to open and close the operation to hydraulic program switch implementation, the convenient realization oil reservoir seals and opens, thereby realizes controlling the oil reservoir liquid to flow into the mesh in the sand control pipe;

2. the utility model discloses an installation of change ring on sand control screen pipe keeps off the sand filter layer, can play the secondary sand removal and filter, and the secondary sand removal is carried out in the filtrating hole on cooperation screen pipe protection tube surface and is filtered, improves the filter effect of this sand control screen pipe, and the screen pipe protection tube can effectually prevent this sand control screen pipe motion in-process of marcing, and oil well pipe wall grit improves its life to the wearing and tearing that keep off the sand filter layer, reduces the maintenance cost.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is the structural schematic diagram of the self-locking switch sliding sleeve of the present invention.

Fig. 3 is the structural schematic diagram of the self-locking orbital transfer sliding sleeve of the utility model.

Fig. 4 is a schematic view of the inner tube structure of the sieve tube of the present invention.

Fig. 5 is a schematic diagram of a comparison file structure of the present invention.

The reference signs are: 1. an upper joint; 2. a self-locking spring; 3. a self-locking switch sliding sleeve; 31. a ball seat; 32. a sliding sleeve convex ring; 4. a thrust steel ball; 5. a self-locking switch outer sleeve; 6. a steel ball plug; 7. a self-locking switch base; 8. a self-locking track-changing sliding sleeve; 81. a wedge-shaped slide rail; 82. a self-locking track-changing sliding sleeve through hole; 9. rotating the ring; 10. a rail pin tube; 11. a concentric pressure bearing tube; 12. a sand blocking filter layer; 13. a sieve tube protecting tube; 14. a sliding sleeve; 15. an inner pipe of the sieve tube; 151. an annular projection; 152. a spiral rib; 16. and a lower sealing joint.

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.

As shown in attached figures 1-4, the switch type sand control screen pipe capable of controlling oil layer liquid to flow into the sand control pipe comprises an upper joint 1, a self-locking switch and a screen pipe, wherein the self-locking switch comprises a self-locking spring 2, a self-locking switch sliding sleeve 3, a thrust steel ball 4, a self-locking switch jacket 5, a self-locking switch base 7 and a self-locking track-changing sliding sleeve 8, the upper end of the self-locking switch jacket 5 is fixedly connected with the outer side of the upper joint 1, the self-locking spring 2, the self-locking switch sliding sleeve 3 and the thrust steel ball 4 are movably arranged inside the self-locking switch jacket 5, the top end of the self-locking switch base 7 is fixedly connected with the bottom end of the self-locking switch jacket 5, the bottom end of the self-locking switch base 7 is fixedly connected with a rotating ring 9, the self-locking track-changing sliding sleeve 8 is movably arranged inside the self-locking switch base 7, the, the sand blocking filter layer 12 is fixedly installed on the bottom surface of the rotary ring 9, a sieve tube protection tube 13 is sleeved on the outer side of the rotary ring 9 and the sand blocking filter layer 12, a track pin tube 10 is movably installed inside the sand blocking filter layer 12, a concentric pressure bearing tube 11 is fixedly installed at the other end of the track pin tube 10, the concentric pressure bearing tube 11 is movably sleeved on the outer side of the sieve tube, the sieve tube is located inside the track pin tube 10, a sieve tube inner tube 15 is fixedly installed inside the sieve tube, a sliding sleeve 14 is slidably installed in a gap between the bottom end of the sand blocking filter layer 12 and the outer side of the sieve tube, and a lower sealing joint 16 is movably sleeved on the outer.

The implementation mode is specifically as follows: by arranging the lower sealing joint 16 and the sliding sleeve 14, the propelling force of the lower sealing joint 16 is remotely controlled by hydraulic pressure, and the lower sealing joint 16 jacks up the sliding sleeve 14 to push the cut-off fluid to enter a channel of an oil layer towards the sand blocking filter layer 12, so that the opening and closing operation of a hydraulic program switch is implemented in a hydraulic manner, the sealing and the opening of the oil layer are conveniently realized, and the aim of controlling the liquid of the oil layer to flow into the sand prevention pipe is fulfilled; additionally, the utility model discloses a change 9 and keep off sand filter layer 12 in the installation on sand control screen pipe, can play the secondary sand removal and filter, and the secondary sand removal is carried out in the filtrating hole on cooperation screen pipe protection tube 13 surface and is filtered, improves the filter effect of this sand control screen pipe, and screen pipe protection tube 13 can effectually prevent this sand control screen pipe motion in-process of marcing, and oil well casing wall grit improves its life to the wearing and tearing that keep off sand filter layer 12, reduces the maintenance cost.

Wherein, the outside of self-locking switch sliding sleeve 3 is fixed to be cup jointed the sliding sleeve bulge loop 32, and the ball seat 31 has been seted up on the surface of self-locking switch sliding sleeve 3 for close the locking with the cooperation of thrust steel ball 4.

The inner wall surface of the self-locking orbital transfer sliding sleeve 8 is uniformly provided with wedge-shaped sliding rails 81, the wedge-shaped sliding rails 81 and the self-locking switch sliding sleeve 3 form axial insertion and circumferential transposition coordination, a plurality of self-locking orbital transfer sliding sleeve through holes 82 are arranged at the bottom end of the self-locking orbital transfer sliding sleeve 8, and form axial insertion and circumferential transposition coordination with a self-locking switch sliding sleeve convex column to execute locking and closing operations.

Wherein, the outside winding fixed mounting of screen pipe inner tube 15 has spiral rib 152, and the fixed surface of screen pipe inner tube 15 cup joints annular protrusion 151 and is located the bottom of spiral rib 152 for consolidate screen pipe inner tube 15, improve structural strength.

The rotary ring 9 can rotate freely, and through holes are formed in the surfaces of the inner sieve tube of the rotary ring 9 and the rotary ring 9, have the same size and are positioned on the same horizontal plane, and are used for closing or opening a channel for oil layer liquid to flow out of the ground and for surface fluid to flow into an oil layer.

The rotary ring 9, the sand blocking filter layer 12 and the sliding sleeve 14 are wrapped on the inner side by the sieve tube protection tube 13, a cavity is formed between the inner side of the sieve tube protection tube 13 and the outer sides of the rotary ring 9 and the sand blocking filter layer 12, and a plurality of sand filtering through holes are formed in the surface of the sieve tube protection tube 13, so that a primary sand filtering program is formed and internal devices are protected.

Wherein, the lower sealing joint 16 is movably sleeved with the bottom end of the concentric pressure-bearing pipe 11, the lower sealing joint 16 is fixedly connected with the bottom end of the screen pipe inner pipe 15 through threads, and the sliding sleeve can be jacked up by the lower sealing joint 16 to push and cut off a passage of fluid entering an oil layer towards the direction of the sand blocking filter layer.

The utility model discloses the theory of operation:

when a specified sieve tube is required to be closed during water exploration and water shutoff in the production process, a matched special control tool, namely a sieve tube self-locking switch controller is put into a shaft, when a movable shifting block at the front end of the sieve tube self-locking switch controller is abutted against the protruding part of the anti-thrust steel ball 4, the self-locking switch sliding sleeve 3 is forced to overcome the elastic force of the self-locking spring 2 to move downwards, a sliding sleeve convex ring 32 of the self-locking switch sliding sleeve 3 moves downwards to a ramp and pushes the ramp, due to the action of the ramp, the self-locking variable-track sliding sleeve 8 rotates for a certain angle, when the sliding sleeve convex ring 32 moves to the wedge-shaped sliding rail 81, the self-locking switch sliding sleeve 3 reaches a bottom dead center position, the anti-thrust steel ball 4 is pushed into a cavity of the self-locking switch outer sleeve 5 by the movable shifting block of the self-locking switch controller, at the moment, the self-locking process of the self-locking switch component is completed, the lower sealing joint 16 is connected, an internal pressure bearing closed cavity is formed in the switch type sand control screen pipe, so that the hydraulic program switch can be opened and closed in a hydraulic mode.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a can control the intraductal switch formula sand control screen of oil reservoir liquid inflow sand control, includes top connection (1), self-locking switch, screen pipe component, its characterized in that: the self-locking switch comprises a self-locking spring (2), a self-locking switch sliding sleeve (3), a thrust steel ball (4), a self-locking switch outer sleeve (5), a self-locking switch seat (7) and a self-locking orbital transfer sliding sleeve (8), wherein the upper end of the self-locking switch outer sleeve (5) is fixedly connected with the outer side of an upper joint (1), the self-locking spring (2), the self-locking switch sliding sleeve (3) and the thrust steel ball (4) are movably arranged inside the self-locking switch outer sleeve (5), the top end of the self-locking switch seat (7) is fixedly connected with the bottom end of the self-locking switch outer sleeve (5), the bottom end of the self-locking switch seat (7) is fixedly connected with a rotating ring (9), the self-locking orbital transfer sliding sleeve (8) is movably arranged inside the self-locking switch seat (7), the top surface of the self-locking orbital transfer sliding sleeve (8) is in mutual axial insertion fit with the self-locking switch, the utility model discloses a sand screen, including change ring (9), the bottom surface fixed mounting of change ring (9) has fender sand filter layer (12), the screen pipe protection tube (13) has been cup jointed in the outside of change ring (9), fender sand filter layer (12), the inside movable mounting that keeps off sand filter layer (12) has track cotter pipe (10), the other end fixed mounting of track cotter pipe (10) has concentric pressure-bearing pipe (11), concentric pressure-bearing pipe (11) activity is cup jointed with the screen pipe outside, the screen pipe is located the inside of track cotter pipe (10), the inside fixed mounting of screen pipe has screen pipe inner tube (15), sliding fit has sliding sleeve (14) in the outside clearance of the bottom of fender sand filter layer (12) and screen pipe, screen pipe and sliding sleeve's (14) outside activity have cup jointed sealing joint down (16.

2. The sand control screen of claim 1, wherein the screen is a switchable screen capable of controlling the flow of reservoir fluids into the sand control pipe, wherein: the outer side of the self-locking switch sliding sleeve (3) is fixedly sleeved with a sliding sleeve convex ring (32), and the surface of the self-locking switch sliding sleeve (3) is provided with a ball seat (31).

3. The sand control screen of claim 1, wherein the screen is a switchable screen capable of controlling the flow of reservoir fluids into the sand control pipe, wherein: the inner wall surface equipartition of auto-lock orbital transfer sliding sleeve (8) has wedge slide rail (81), wedge slide rail (81) constitute axial grafting and circumference transposition cooperation with auto-lock switch sliding sleeve (3), the bottom of auto-lock orbital transfer sliding sleeve (8) all is provided with a plurality of auto-lock orbital transfer sliding sleeve through-holes (82).

4. The sand control screen of claim 1, wherein the screen is a switchable screen capable of controlling the flow of reservoir fluids into the sand control pipe, wherein: spiral ribs (152) are fixedly mounted on the outer side of the screen pipe inner pipe (15) in a winding mode, and annular protrusions (151) are fixedly sleeved on the surface of the screen pipe inner pipe (15) and located at the bottom ends of the spiral ribs (152).

5. The sand control screen of claim 1, wherein the screen is a switchable screen capable of controlling the flow of reservoir fluids into the sand control pipe, wherein: the rotary ring (9) can rotate freely, through holes are formed in the surfaces of the inner sieve tube of the rotary ring (9) and the rotary ring (9), and the through holes are the same in size and are located on the same horizontal plane.

6. The sand control screen of claim 1, wherein the screen is a switchable screen capable of controlling the flow of reservoir fluids into the sand control pipe, wherein: the sieve tube protection pipe (13) wraps the rotary ring (9), the sand blocking filter layer (12) and the sliding sleeve (14) in the inner side, the inner side of the sieve tube protection pipe (13) and the outer sides of the rotary ring (9) and the sand blocking filter layer (12) are provided with cavities, and a plurality of sand filtering through holes are formed in the surface of the sieve tube protection pipe (13).

7. The sand control screen of claim 1, wherein the screen is a switchable screen capable of controlling the flow of reservoir fluids into the sand control pipe, wherein: the lower sealing joint (16) is movably sleeved with the bottom end of the concentric pressure bearing pipe (11), and the lower sealing joint (16) is fixedly connected with the bottom end of the sieve tube inner pipe (15) through threads.