CN217712509U

CN217712509U - Fixing device for well completion screen pipe

Info

Publication number: CN217712509U
Application number: CN202221766487.0U
Authority: CN
Inventors: 马春疆; 张晓峰; 李磊; 高龙; 符浩然
Original assignee: Bazhou Aoying Petroleum Technology Co ltd
Current assignee: Bazhou Aoying Petroleum Technology Co ltd
Priority date: 2022-07-11
Filing date: 2022-07-11
Publication date: 2022-11-01
Anticipated expiration: 2032-07-11

Abstract

The utility model discloses a fixing device for well completion screen pipe, including the screen pipe, be provided with fixed establishment on the screen pipe, the screen pipe has solid fixed ring through fixed establishment fixed mounting, gu fixed ring threaded connection has the bellows, gu the welding has the couple on the fixed ring, be provided with the link on the couple, be connected with first spring between two links, extrude first piston rod through last snap ring, utilize guide post guide second piston rod to get into the slot, utilize the repulsion of first magnetic path and second magnetic path to make the activity kelly to contract inwards, make the activity kelly get into the spacing groove through first opening, in order to prevent the not hard up of snap ring and lower snap ring, the bolt passes through the through-hole and fixes snap ring and lower snap ring, in the in-process that uses, can satisfy the demand of buckling of screen pipe in the use through the bellows, thereby make the screen pipe satisfy people's user demand better, utilize first spring to cushion protection to the bellows, adopt closable couple to connect simultaneously, make its convenient to detach.

Description

Fixing device for well completion screen pipe

Technical Field

The utility model relates to a screen pipe technical field of oil development especially relates to a fixing device for well completion screen pipe.

Background

In the oil drilling and production operation, the screen pipe is an important apparatus, at present, more screen pipes are adopted and are wire-wrapped screen pipes, the main function of the screen pipes is sand prevention, and the type and the steel grade of the screen pipes are determined by the geological environment of an oil well.

At present most sieve tube all adopt be sectional type structure, and most sectional type structure is very inconvenient when the junction to the multistage sieve tube is installed and is dismantled to because fixed establishment leads to the relatively poor easy emergence pine of fixed effect to take off the accident, and because external environment factor can lead to fixed establishment's not hard up, thereby reduce the sand control effect of sieve tube, influence oil development work, all cause negative effects to economic cost etc..

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the disassembly is inconvenient and the fixing effect is poor in the prior art, and provides a fixing device for a well completion sieve tube.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a fixing device for well completion screen pipe, includes the screen pipe, be provided with fixed establishment on the screen pipe, the screen pipe has solid fixed ring through fixed establishment fixed mounting, gu threaded connection has the bellows on the fixed ring, gu the welding has the couple on the fixed ring, be provided with link, two on the couple be connected with first spring between the link.

Preferably, the fixing ring is provided with a thread groove, and the two ends of the corrugated pipe are provided with external threads matched with the thread groove.

Preferably, the fixing mechanism comprises an upper snap ring and a lower snap ring which are respectively arranged on the sieve tube and the fixing ring, through holes are longitudinally formed in both sides of the upper snap ring and the lower snap ring, and bolts are connected in the through holes in a threaded manner;

the hydraulic clamping device is characterized in that a hydraulic groove is formed in the lower clamping ring, a first piston rod penetrating through and extending to the top end position of the lower clamping ring is movably connected to the inner side of the hydraulic groove, a guide post is fixedly connected to the lower clamping ring, a second piston rod penetrating through and extending to the top end position of the lower clamping ring is movably connected to the outer side of the hydraulic groove, a storage cavity is formed in the outer end position of the second piston rod, a second spring is fixedly connected to the bottom end of the storage cavity, a first magnetic block penetrating through the middle of the top end of the second piston rod is fixedly connected to the top end of the second spring, a first movable clamping rod and a second movable clamping rod which are connected to each other are respectively mounted on the first magnetic block and the second piston rod through pin shafts, a clamping block is jointly connected to a connecting end between the first movable clamping rod and the second movable clamping rod, a guide groove matched with the guide post is formed in the upper clamping ring, a slot matched with the second piston rod is formed in the upper clamping ring, a limiting groove matched with the clamping block is formed in the inner wall of the slot, and a second magnetic block which is fixedly connected to the top end of the slot and is homopolar repelled with the first magnetic block.

Preferably, the hydraulic groove is formed in the top end of the lower clamping ring, and the first piston rod and the second piston rod are longitudinally arranged.

Preferably, the guide post is arranged between the first piston rod and the second piston rod, the accommodating cavity is arranged at the upper end of the second piston rod, a first opening corresponding to the clamping block is formed in the side wall of the accommodating cavity, and a second opening used for slidably sleeving the first magnetic block is formed in the outer end of the accommodating cavity.

Preferably, the guide way all vertically sets up in last snap ring bottom position with the slot, and the guide way is seted up in the inboard position of slot, be provided with the sealed pad that corresponds the setting with the guide post in the guide way.

Compared with the prior art, the utility model discloses possess following advantage:

1. the utility model discloses an go up the first piston rod of snap ring extrusion, utilize the guide post to guide the second piston rod to get into the slot, utilize the repulsion of first magnetic path and second magnetic path to make the activity kelly to the internal contraction, make the activity kelly get into the spacing groove through first opening to prevent to go up the not hard up of snap ring and lower snap ring, the bolt will go up the snap ring through the through-hole and fix with lower snap ring, with the zonulae occludens of the pipe connection department of assurance screen pipe.

2. The utility model discloses at the in-process that uses, can satisfy the demand of buckling of screen pipe in the use through the bellows to make the screen pipe satisfy people's user demand better, utilize first spring to cushion the protection to the bellows, reduced the tractive of buckling to the bellows, but adopt the couple connection of closure simultaneously, make its convenient to detach, help improving the life of bellows.

Drawings

Fig. 1 is a schematic structural view of a fixing device for a well completion screen according to the present invention;

fig. 2 is a schematic structural view of an upper snap ring and a lower snap ring of a fixing device for a well completion screen pipe according to the present invention;

fig. 3 is an enlarged schematic view of a part a of a fixing device for a well completion screen according to the present invention;

fig. 4 is a schematic diagram of a part B of the fixing device for a well completion screen according to the present invention.

In the figure: 1. a screen pipe; 2. a fixing ring; 3. a bellows; 4. hooking; 5. hanging a ring; 6. a first spring; 7. a snap ring is arranged; 8. a lower snap ring; 9. a through hole; 10. a bolt; 11. a hydraulic tank; 12. a first piston rod; 13. a guide post; 14. a second piston rod; 15. a receiving cavity; 16. a second spring; 17. a first magnetic block; 18. a first movable clamping rod; 19. a guide groove; 20. a slot; 21. a limiting groove; 22. a second magnetic block; 23. a second movable clamping rod; 24. a clamping block; 25. a first 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.

Referring to fig. 1-4, a fixing device for a well completion sieve tube comprises a sieve tube 1, a fixing mechanism is arranged on the sieve tube 1, a fixing ring 2 is fixedly arranged on the sieve tube 1 through the fixing mechanism, a threaded groove is formed in the fixing ring 2, a corrugated tube 3 is connected to the fixing ring 2 in a threaded manner, and the corrugated tube 3 can meet the bending requirement of the sieve tube 1 in the using process, so that the sieve tube 1 can better meet the using requirement of people, external threads matched with the threaded groove are arranged at two ends of the corrugated tube 3, a hook 4 is welded on the fixing ring 2, a hanging ring 5 is arranged on the hook 4, the first spring 6 is convenient to detach and replace through the hook 4 and the hanging ring 5, a first spring 6 is connected between the two hanging rings 5, the corrugated tube 3 is buffered and protected by the first spring 6, the bending traction of the corrugated tube 3 is reduced, and the service life of the corrugated tube 3 is prolonged;

the fixing mechanism comprises an upper clamping ring 7 and a lower clamping ring 8 which are respectively arranged on the sieve tube 1 and the fixing ring 2, through holes 9 are longitudinally formed in both sides of the upper clamping ring 7 and the lower clamping ring 8, and bolts 10 are connected in the through holes 9 in a threaded manner;

a hydraulic groove 11 is formed in the top end position of the lower clamping ring 8, a first piston rod 12 penetrating through and extending to the top end position of the lower clamping ring 8 is movably connected to the inner side of the hydraulic groove 11, a guide post 13 is fixedly connected to the lower clamping ring 8 and is guided by the guide post 13, so that the second piston rod 14 can enter the slot 20, the mounting efficiency is improved, the guide post 13 is arranged between the first piston rod 12 and the second piston rod 14, a second piston rod 14 penetrating through and extending to the top end position of the lower clamping ring 8 is movably connected to the outer side of the hydraulic groove 11, the first piston rod 12 and the second piston rod 14 are longitudinally arranged, the first piston rod 12 is extruded through the upper clamping ring 7, and the second piston rod 14 vertically moves upwards under the action of air pressure;

an accommodating cavity 15 is formed in the outer end position of the second piston rod 14, a second spring 16 is fixedly connected to the bottom end of the accommodating cavity 15, a first magnetic block 17 penetrating through the middle of the top end of the second piston rod 14 is fixedly connected to the top end of the second spring 16, a second opening used for slidably sleeving the first magnetic block 17 is formed in the outer end position of the accommodating cavity 15, a first movable clamping rod 18 and a second movable clamping rod 23 which are connected are respectively mounted on the first magnetic block 17 and the second piston rod 14 through pin shafts, a clamping block 24 is connected to the connecting end between the first movable clamping rod 18 and the second movable clamping rod 23 together, and a first opening 25 corresponding to the clamping block 24 is formed in the side wall position of the accommodating cavity 15;

the upper snap ring 7 is provided with a guide groove 19 matched with the guide post 13, a sealing gasket arranged corresponding to the guide post 13 is arranged in the guide groove 19, a gap between the guide groove 19 and the guide post 13 is smaller through the sealing gasket, and the sealing performance of the fixing mechanism is improved, the upper snap ring 7 is provided with a slot 20 matched with the second piston rod 14, the guide groove 19 and the slot 20 are longitudinally arranged at the bottom end position of the upper snap ring 7, the guide groove 19 is arranged at the inner side position of the slot 20, the inner wall of the slot 20 is provided with a limiting groove 21 matched with the clamping block 24, the top end in the slot 20 is fixedly connected with a second magnetic block 22 which has the same pole as the first magnetic block 17 and repels, the first magnetic block 17 moves downwards to extrude the second spring 16 by utilizing the repulsion action of the first magnetic block 17 and the second magnetic block 22, the buffer protection and the auxiliary support of the first magnetic block 17 are realized by utilizing the elastic action of the second spring 16, the first movable clamping rod 18 and the second movable clamping rod 23 are closed inwards, so that the clamping block 24 is abutted against the first opening 25, and the upper snap ring 7 is prevented, and the stability of the lower snap ring 8 is improved, and the stability of the device is improved.

The utility model discloses its functional principle is explained to following mode of operation of accessible:

the corrugated pipe 3 is installed in the threaded groove of the fixed ring 2 in a threaded manner by utilizing the external threads at the two ends of the corrugated pipe 3, and the first spring 6 is connected with the hook 4 through the hanging ring 5;

the upper clamping ring 7 and the lower clamping ring 8 are closed, the guide post 13 enters the guide groove 19, the upper clamping ring 7 extrudes the first piston rod 12, the second piston rod 14 enters the slot 20 through air pressure, the first magnetic block 17 moves downwards to extrude the second spring 16 through the repulsion action of the first magnetic block 17 and the second magnetic block 22, the first movable clamping rod 18 and the second movable clamping rod 23 are closed inwards, the clamping block 24 horizontally corresponds to the first opening 25, the first opening 25 extends out of the accommodating cavity 15 and extends into the limiting groove 21, the upper clamping ring 7 is fixedly connected with the lower clamping ring 8 through the bolt 10 through the through hole 9, and the fixed connection of the sieve tube 1 and the fixed ring 2 is realized.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a fixing device for well completion screen pipe, includes screen pipe (1), its characterized in that, be provided with fixed establishment on screen pipe (1), screen pipe (1) has solid fixed ring (2) through fixed establishment fixed mounting, gu threaded connection has bellows (3) on fixed ring (2), gu the welding has couple (4) on fixed ring (2), be provided with link (5) on couple (4), two be connected with first spring (6) between link (5).

2. The fixing device for the screen pipe for well completion according to claim 1, characterized in that the fixing ring (2) is provided with a threaded groove, and the corrugated pipe (3) is provided with external threads matched with the threaded groove at both ends.

3. The fixing device for the well completion screen pipe is characterized by comprising an upper snap ring (7) and a lower snap ring (8) which are respectively arranged on the screen pipe (1) and a fixing ring (2), wherein through holes (9) are longitudinally formed in both sides of the upper snap ring (7) and the lower snap ring (8), and bolts (10) are connected in the through holes (9) in a threaded manner;

a hydraulic groove (11) is formed in the lower clamping ring (8), a first piston rod (12) penetrating through and extending to the top end position of the lower clamping ring (8) is movably connected to the inner side of the hydraulic groove (11), a guide post (13) is fixedly connected to the lower clamping ring (8), a second piston rod (14) penetrating through and extending to the top end position of the lower clamping ring (8) is movably connected to the outer side of the hydraulic groove (11), a containing cavity (15) is formed in the outer end position of the second piston rod (14), a second spring (16) is fixedly connected to the bottom end of the containing cavity (15), a first magnetic block (17) penetrating through the middle of the top end of the second piston rod (14) is fixedly connected to the top end of the second spring (16), a first movable clamping rod (18) and a second movable clamping rod (23) which are connected are respectively mounted on the first piston rod (17) and the second piston rod (14) through a pin shaft, a clamping block (24) is jointly connected to a connecting end between the first movable clamping rod (18) and the second movable clamping rod (23), a clamping rod (7) is formed in the upper clamping ring (7), a clamping groove (20) matched with the guide post (13) is formed in the upper clamping post, and a slot (20) is formed in the upper clamping groove (21) matched with the inner wall of the piston rod (14), and the inner wall (21) of the piston rod (7), and a second magnetic block (22) which has the same pole as that of the first magnetic block (17) and is repelled is fixedly connected to the top end in the slot (20).

4. A fastening device for a completion screen according to claim 3, wherein the hydraulic groove (11) is provided at the top end of the lower snap ring (8) and the first piston rod (12) and the second piston rod (14) are longitudinally arranged.

5. The fixing device for the screen pipe of the well completion according to claim 4, wherein the guiding column (13) is disposed between the first piston rod (12) and the second piston rod (14), a first opening (25) corresponding to the clamping block (24) is disposed on a side wall of the receiving cavity (15), and a second opening for slidably sleeving the first magnet (17) is disposed on an outer end of the receiving cavity (15).

6. The fixing device for the well completion screen according to claim 3, wherein the guide groove (19) and the slot (20) are longitudinally arranged at the bottom end position of the upper snap ring (7), the guide groove (19) is arranged at the inner side position of the slot (20), and a sealing gasket corresponding to the guide column (13) is arranged in the guide groove (19).