CN113202425A

CN113202425A - Lantern type centralizer

Info

Publication number: CN113202425A
Application number: CN202110611270.6A
Authority: CN
Inventors: 吴帮民
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-01
Filing date: 2021-06-01
Publication date: 2021-08-03

Abstract

The invention relates to the technical field of centralizers and discloses a lantern type centralizer, which comprises a sleeve and a centralizer body, wherein the centralizer body is movably connected in an inner cavity of the sleeve and comprises an upper joint, a lower joint and a double-bow elastic sheet. This lantern formula centralizer, through the setting of each structure in the deformation structure, when the four upwards stimulations of stay cord, the stay cord four drives the one end rebound of two and the stay cord three of looks fixed connection with it, the other end of stay cord two upwards stimulates stripper plate one, the other end of stay cord three stimulates stripper plate two downwards, stripper plate one extrudees the rubber sleeve with two stripper plates, the rubber sleeve produces deformation, the rubber sleeve can closely laminate with the sleeve pipe, this centralizer is fixed intraductal at the cover, be convenient for this centralizer restriction oil pipe's longitudinal movement, the user is according to the removal length of sheathed tube diameter control stay cord four, the rubber sleeve can be together fixed with not unidimensional sleeve pipe, the practicality of this centralizer has been improved.

Description

Lantern type centralizer

Technical Field

The invention relates to the technical field of centralizers, in particular to a lantern type centralizer.

Background

The tubing centralizer is mainly used for centralizing the tubing in an oil-water well inclined shaft, prevents the tubing from creeping to cause abrasion to the tubing and the casing wall in the oil pumping working process, particularly, the coupling part of the tubing increases the friction probability with the inner wall of the casing because the outer diameter of the coupling part is obviously larger than that of the tubing, if the coupling part is frequently abraded with the casing for a long time, the casing is possibly abraded, slightly needs to be repaired, consumes time and labor, and directly causes the scrapping of an oil well if the coupling part is serious, thereby causing the influence to the normal production of the oil field,

among the prior art, establish the centralizer through the cover on the oil pipe outer wall, can block oil pipe to a certain extent, coupling and the wearing and tearing of intraductal wall of sleeve, but current oil pipe centralizer generally is for deciding the diameter, can not adapt to undergauge sleeve pipe or big belly well section, under this situation, the centralizer of deciding the diameter then can not play the righting effect, and, in the place that the sleeve pipe internal diameter diminishes, need restrict the centralizer and take place axial rotation, make centralizer and oil pipe combine closely, when preventing that the oil pipe from leading to oil, take place the influence that drunkenness and vibrations caused oil pipe stability.

Disclosure of Invention

Aiming at the defects of the existing lantern type centralizer, the invention provides the lantern type centralizer which has the advantages that the outer diameter of the centralizer can be changed, the centralizer is convenient to adapt to casings of different sizes, and the problems in the background art are solved.

The invention provides the following technical scheme: a lantern type centralizer comprises a sleeve and a centralizer body, wherein the centralizer body is movably connected in an inner cavity of the sleeve, the centralizer body comprises an upper joint, a lower joint and a double-bow elastic sheet, the middle part of the inner cavity of the upper joint and the middle part of the inner cavity of the lower joint are both provided with threads, the outer ring of the top end of the upper joint is connected with a threaded ring in a threaded manner, the bottom of the threaded ring is movably connected with a connecting block, the outer ring at the bottom end of the upper joint is fixedly connected with a connecting ring, the bottom of the connecting ring is fixedly connected with one end of the double-bow elastic sheet, the other end of the double-bow elastic sheet is fixedly connected with another connecting ring, the inner cavity of the other connecting ring is fixedly connected with the outer ring at the top end of the lower connector, the outer rings of the upper joint and the lower joint are movably connected with deformation structures, the two deformation structures are fixedly connected through a pull rope I, and the deformation structures on the upper joint are fixedly connected with the bottom of the connecting block.

Preferably, the inner wall of the threaded ring is provided with an internal thread, the outer ring on the top end of the upper joint is provided with an external thread matched with the internal thread, the top of the threaded ring is uniformly provided with a fixing groove, the inner cavity of the connecting block is movably connected with the upper joint, the top of the inner side of the threaded ring and the bottom of the connecting block are both provided with soft bristles, and the other ends of the soft bristles are in contact with the external thread.

Preferably, one side of the bottom end of the upper joint is fixedly connected with a positioning block, the positioning block is located below the deformation structure, and the length of the positioning block is smaller than the inner radius of the deformation structure.

Preferably, the deformation structure comprises a first extrusion plate, a second extrusion plate and a rubber sleeve, the first extrusion plate and the second extrusion plate are both movably connected with an upper joint or a lower joint, the outer ring at the top of the first extrusion plate is fixedly connected with the bottom of the rubber sleeve, the other end of the rubber sleeve is fixedly connected with the top of the second extrusion plate, two connecting rings are positioned at the inner sides of the two extrusion plates, the top of the first extrusion plate is uniformly and fixedly connected with a stretching structure, the stretching structure comprises two supporting frames, the two supporting frames are fixedly connected with the side wall of the upper joint or the side wall of the lower joint, the supporting frames are positioned in the middle of the rubber sleeve, the inner cavity of the other end of each supporting frame is movably connected with a roller, the top of the first extrusion plate is uniformly and fixedly connected with a second stretching rope, the other end of the second stretching rope is lapped on the outer ring of the roller, and the bottom of the second extrusion plate is fixedly connected with a third stretching rope, the other end of the third pull rope is wound on the other roller, the other ends of the second pull rope and the third pull rope are fixedly connected with the bottom end of the fourth pull rope, the other end of the fourth pull rope penetrates through the second extrusion plate and extends to the outer side of the second extrusion plate, and the fourth pull rope is movably connected with the side wall of the second extrusion plate.

Preferably, the bottom of the first pulling rope is fixedly connected with the top of the fourth pulling rope on the lower connector, the other end of the first pulling rope is fixedly connected with the bottom of the first extrusion plate on the upper connector, and the bottom of the connecting block is fixedly connected with the top of the fourth pulling rope.

Preferably, half of the height value of the rubber sleeve is smaller than the height value of an external thread arranged at the top end of the upper joint, and a metal wire mesh is fixedly connected to the outer surface of the rubber sleeve.

Preferably, the bottom of the sleeve is provided with a slot, the centralizer body is located in the slotted inner cavity, the top of the sleeve is provided with a hole, and the top end of the upper joint is movably connected with the inner cavity of the hole.

Preferably, the second pull rope, the first pull rope, the third pull rope and the fourth pull rope are all made of alloy steel, the second extrusion plate is provided with a movable hole, the fourth pull rope is movably connected with an inner cavity of the movable hole, and the inner wall of the movable hole is fixedly connected with a soft rubber cushion.

Compared with the prior lantern type centralizer, the centralizer has the following beneficial effects:

1. this lantern formula centralizer, through the setting of each structure in the deformation structure, when the four upwards stimulations of stay cord, the stay cord four drives the one end rebound of two and the stay cord three of looks fixed connection with it, the other end of stay cord two upwards stimulates stripper plate one, the other end of stay cord three stimulates stripper plate two downwards under the effect of gyro wheel, stripper plate one extrudees the rubber sleeve with two stripper plates, the rubber sleeve produces deformation, the rubber sleeve can closely laminate with the sleeve pipe, this centralizer is fixed intraductal at the cover, be convenient for this centralizer restriction oil pipe's longitudinal movement, the user is according to the removal length of sheathed tube diameter control stay cord four, the rubber sleeve can be together fixed with the sleeve pipe of unidimensional, the practicality of this centralizer has been improved.

2. This lantern formula centralizer, through the setting of soft brush hair, the screw ring can be brushed the dirty thing of adhesion on the external screw thread at the soft brush hair of pivoted in-process, and the screw ring of being convenient for and the meshing of external screw thread through the setting of fixed slot, and external equipment and screw ring can be fixed together, and the external equipment of being convenient for drives the screw ring and rotates.

3. This lantern formula centralizer, through the setting of stay cord one, can drive stay cord four to the upward movement on the lower clutch when the stripper plate on the top connection moves upward, is convenient for change the height of rubber sleeve on the lower clutch, makes the lower part of this centralizer and sleeve pipe fixed together.

Drawings

FIG. 1 is a schematic front view of the structure of the present invention;

FIG. 2 is an exploded view of the present invention shown in FIG. 1;

FIG. 3 is a side view of a centralizer body according to the invention;

FIG. 4 is an exploded view of the structural centralizer body of the present invention;

fig. 5 is an enlarged schematic view of the stretching structure of the present invention.

In the figure: 1. a sleeve; 2. a centralizer body; 3. an upper joint; 4. a lower joint; 5. a connecting ring; 6. a double-bow elastic sheet; 7. a first extrusion plate; 8. a rubber sleeve; 9. stretching the structure; 10. connecting blocks; 11. fixing grooves; 12. a threaded ring; 13. soft bristles; 14. pulling a first rope; 15. a second extrusion plate; 16. deformation structure; 17. positioning blocks; 18. pulling a rope IV; 19. a second pull rope; 20. pulling a rope III; 21. a support frame; 22. and a roller.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, a lantern type centralizer comprises a sleeve 1 and a centralizer body 2, wherein the centralizer body 2 is movably connected in an inner cavity of the sleeve 1, the sleeve 1 can protect a rubber sleeve 8 during movement of the centralizer, the rubber sleeve 8 is prevented from being damaged by friction, the service life of the rubber sleeve 8 is shortened, the centralizer body 2 comprises an upper joint 3, a lower joint 4 and a double-bow elastic sheet 6, threads are respectively arranged in the middle of the inner cavity of the upper joint 3 and the middle of the inner cavity of the lower joint 4, an outer ring thread at the top end of the upper joint 3 is connected with a thread ring 12, the bottom of the thread ring 12 is movably connected with a connecting block 10, a connecting ring 5 is fixedly connected to the outer ring at the bottom end of the upper joint 3, the bottom of the connecting ring 5 is fixedly connected with one end of the double-bow elastic sheet 6, the other end of the double-bow elastic sheet 6 is fixedly connected with another connecting ring 5, the inner cavity of the other connecting ring 5 is fixedly connected with the outer ring at the top end of the lower connector 4, the outer rings of the upper connector 3 and the lower connector 4 are both movably connected with deformation structures 16, the two deformation structures 16 are fixedly connected with each other through a first stay cord 14, and the deformation structure 16 on the upper connector 3 is fixedly connected with the bottom of the connecting block 10.

Wherein, the inner wall of screw ring 12 is equipped with the internal thread, the outer lane on 3 tops of top connection is equipped with the external screw thread with internal thread looks adaptation, screw ring 12's top evenly is equipped with fixed slot 11, connecting block 10's inner chamber and 3 swing joint of top connection, screw ring 12 inboard top and connecting block 10 bottom all are equipped with soft brush hair 13, and soft brush hair 13's the other end and external screw thread contact, setting through soft brush hair 13, screw ring 12 can be brushed the dirty thing of adhesion on the external screw thread at pivoted in-process soft brush hair 13, be convenient for the meshing of screw ring 12 and external screw thread, setting through fixed slot 11, external equipment can be fixed together with screw ring 12, it rotates to be convenient for external equipment to drive screw ring 12.

Wherein, one side fixedly connected with locating piece 17 of top connection 3 bottom, locating piece 17 is located the below of deformation structure 16, and locating piece 17 length is less than the inner radius of deformation structure 16, and through the setting of locating piece 17, the height of deformation structure 16 can be restricted to locating piece 17, is convenient for deformation structure 16 and top connection 3 separation.

Wherein, the deformation structure 16 comprises a first extrusion plate 7, a second extrusion plate 15 and a rubber sleeve 8, the first extrusion plate 7 and the second extrusion plate 15 are movably connected with the upper joint 3 or the lower joint 4, the outer ring of the top of the first extrusion plate 7 is fixedly connected with the bottom of the rubber sleeve 8, the other end of the rubber sleeve 8 is fixedly connected with the top of the second extrusion plate 15, the two connecting rings 5 are positioned at the inner sides of the two extrusion plates 15, the top of the first extrusion plate 7 is uniformly and fixedly connected with a stretching structure 9, the stretching structure 9 comprises two supporting frames 21, the two supporting frames 21 are fixedly connected with the side walls of the upper joint 3 or the lower joint 4, the supporting frames 21 are positioned at the middle part of the rubber sleeve 8, the inner cavity at the other end of the supporting frames 21 is movably connected with a roller 22, the top of the first extrusion plate 7 is uniformly and fixedly connected with a second pull rope 19, the other end of the second pull rope 19 is lapped on the outer ring of the roller 22, the bottom of the second extrusion plate 15 is fixedly connected with a third pull rope 20, the other end of the third pull rope 20 is wound on the other roller 22, the other end of the second pull rope 19 and the other end of the third pull rope 20 are fixedly connected with the bottom end of the fourth pull rope 18, the other end of the fourth pull rope 18 penetrates through the second extrusion plate 15 and extends to the outer side of the second extrusion plate 15, the fourth pull rope 18 is movably connected with the side wall of the second extrusion plate 15, through the arrangement of the structures in the deformation structure 16, when the fourth pull rope 18 is pulled upwards, the fourth pull rope 18 drives one end of the second pull rope 19 and one end of the third pull rope 20 which are fixedly connected with the fourth pull rope to move upwards, the other end of the second pull rope 19 pulls the first extrusion plate 7 upwards, the other end of the third pull rope 20 pulls the second extrusion plate 15 downwards under the action of the roller 22, the first extrusion plate 7 and the second extrusion plate 15 extrude the rubber sleeve 8, the rubber sleeve 8 is deformed, the rubber sleeve 8 can be tightly attached to the sleeve, the centralizer is fixed in the sleeve, and convenient for the centralizer to limit the axial movement of the oil pipe, the user controls the moving length of the pull rope four 18 according to the diameter of the sleeve, and the rubber sleeve 8 can be fixed with the sleeves with different sizes, so that the practicability of the centralizer is improved.

Wherein, the bottom of stay cord one 14 and the top of stay cord four 18 on the lower clutch 4 are fixed connection mutually, the bottom fixed connection of first 7 of stripper plate on the other end and the top 3 of stay cord one 14, the bottom of connecting block 10 and the top of another stay cord four 18 are fixed connection mutually, through the setting of stay cord one 14, can drive stay cord four 18 upward movement on the lower clutch 4 when stripper plate one 7 upward movement on the top clutch 3, be convenient for change the height of rubber sleeve 8 on the lower clutch 4, make the lower part of this centralizer together fixed with the sleeve pipe.

Wherein, half of the 8 height value of rubber sleeve is less than the height value of the external screw thread that 3 tops of top connection were equipped with, and the fixed surface of rubber sleeve 8 is connected with wire mesh, and through wire mesh's setting, wire mesh has increased rubber sleeve 8's intensity, the use of the rubber sleeve 8 of being convenient for.

Wherein, the bottom of sleeve 1 is equipped with the fluting, and centralizer body 2 is located the grooved inner chamber, and the top of sleeve 1 is equipped with the hole, and the top of top connection 3 and the inner chamber swing joint in hole through the setting of sleeve 1, are convenient for take out of sleeve 1.

Wherein, the material of two 19, 14, three 20 and four 18 stay cords of stay cord is alloy steel, is equipped with the activity hole on the stripper plate two 15, the inner chamber swing joint of four 18 and activity holes of stay cord, and the inner wall fixedly connected with soft cushion of activity hole, through the setting of soft cushion, has increased deformation structure 16's leakproofness, is convenient for fix this centralizer and sleeve pipe together with rubber sleeve 8.

The working principle is as follows: when the centralizer is used, a user fixes the centralizer body 2 on the outer side of an oil pipe, the sleeve 1 is sleeved on the outer side of the centralizer body 2, when the centralizer body 2 moves to a proper position, the sleeve 1 is taken out, external equipment is fixed with the threaded ring 12, the external equipment drives the threaded ring 12 to rotate, the threaded ring 12 moves upwards, the threaded ring 12 drives the connecting block 10 movably connected with the threaded ring to move upwards, the connecting block 10 drives the pull rope four 18 fixedly connected with the connecting block to move upwards, the pull rope four 18 drives one end of the pull rope two 19 and one end of the pull rope three 20 fixedly connected with the pull rope four to move upwards, the other end of the pull rope two 19 pulls the extrusion plate one 7 upwards, the other end of the pull rope three 20 pulls the extrusion plate two 15 downwards under the action of the roller 22, the extrusion plate one 7 and the extrusion plate two 15 extrude the rubber sleeve 8, the rubber sleeve 8 deforms, and the rubber sleeve 8 can be tightly attached to a sleeve, this centralizer is fixed intraductal at the cover, can drive four 18 upstairs movements of stay cord on the lower clutch 4 during the stripper plate 7 rebound on the top connection 3, is convenient for change the height of rubber sleeve 8 on the lower clutch 4, makes the lower part of this centralizer together with the sleeve pipe is fixed, and the user is according to the removal length of four 18 of sheathed tube diameter control stay cord, and rubber sleeve 8 can be together fixed with not unidimensional sleeve pipe, has improved the practicality of this centralizer.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a lantern formula centralizer, includes sleeve (1) and centralizer body (2), its characterized in that: the inner cavity of the sleeve (1) is movably connected with a centralizer body (2), the centralizer body (2) comprises an upper joint (3), a lower joint (4) and a double-arch elastic sheet (6), threads are arranged in the middle of the inner cavity of the upper joint (3) and the middle of the inner cavity of the lower joint (4), a threaded ring (12) is connected with the outer ring thread of the top end of the upper joint (3), a connecting block (10) is movably connected with the bottom of the threaded ring (12), a connecting ring (5) is fixedly connected with the outer ring of the bottom end of the upper joint (3), the bottom of the connecting ring (5) is fixedly connected with one end of the double-arch elastic sheet (6), another connecting ring (5) is fixedly connected with the other end of the double-arch elastic sheet (6), the inner cavity of the connecting ring (5) is fixedly connected with the outer ring of the top end of the lower joint (4), and deformation structures (16) are movably connected with the outer rings of the upper joint (3) and the lower joint (4), the two deformation structures (16) are fixedly connected through a first pull rope (14), and the deformation structure (16) on the upper joint (3) is fixedly connected with the bottom of the connecting block (10).

2. A lantern-type centralizer as claimed in claim 1, wherein: the inner wall of screw ring (12) is equipped with the internal thread, the outer lane on top connection (3) top is equipped with the external screw thread with internal thread looks adaptation, the top of screw ring (12) evenly is equipped with fixed slot (11), the inner chamber and top connection (3) swing joint of connecting block (10), the top of screw ring (12) inboard and connecting block (10) bottom all are equipped with soft brush hair (13), and the other end and the external screw thread of soft brush hair (13) contact.

3. A lantern-type centralizer as claimed in claim 1, wherein: one side of the bottom end of the upper joint (3) is fixedly connected with a positioning block (17), the positioning block (17) is located below the deformation structure (16), and the length of the positioning block (17) is smaller than the inner radius of the deformation structure (16).

4. A lantern-type centralizer as claimed in claim 1, wherein: the deformation structure (16) comprises a first extrusion plate (7), a second extrusion plate (15) and a rubber sleeve (8), wherein the first extrusion plate (7) and the second extrusion plate (15) are movably connected with an upper joint (3) or a lower joint (4), the outer ring of the top of the first extrusion plate (7) is fixedly connected with the bottom of the rubber sleeve (8), the other end of the rubber sleeve (8) is fixedly connected with the top of the second extrusion plate (15), two connecting rings (5) are positioned at the inner sides of the two extrusion plates (15), a stretching structure (9) is uniformly and fixedly connected with the top of the first extrusion plate (7), the stretching structure (9) comprises two supporting frames (21), the two supporting frames (21) are fixedly connected with the side wall of the upper joint (3) or the side wall of the lower joint (4), the supporting frames (21) are positioned in the middle of the rubber sleeve (8), and rollers (22) are movably connected with the inner cavity of the other end of the supporting frames (21), the top of the first extrusion plate (7) is uniformly and fixedly connected with a second pull rope (19), the other end of the second pull rope (19) is lapped on an outer ring of the roller (22), the bottom of the second extrusion plate (15) is fixedly connected with a third pull rope (20), the other end of the third pull rope (20) is wound on the other roller (22), the other end of the second pull rope (19) and the other end of the third pull rope (20) are fixedly connected with the bottom end of a fourth pull rope (18), the other end of the fourth pull rope (18) penetrates through the second extrusion plate (15) and extends to the outer side of the second extrusion plate (15), and the fourth pull rope (18) is movably connected with the side wall of the second extrusion plate (15).

5. A lantern-type centralizer as claimed in claim 1, wherein: the bottom of the first pull rope (14) is fixedly connected with the top of a fourth pull rope (18) on the lower connector (4), the other end of the first pull rope (14) is fixedly connected with the bottom of a first extrusion plate (7) on the upper connector (3), and the bottom of the connecting block (10) is fixedly connected with the top of the fourth pull rope (18).

6. A lantern-type centralizer as claimed in claim 4, wherein: half of the height value of the rubber sleeve (8) is smaller than the height value of the external thread arranged at the top end of the upper joint (3), and the outer surface of the rubber sleeve (8) is fixedly connected with a wire mesh.

7. A lantern-type centralizer as claimed in claim 4, wherein: the bottom of sleeve (1) is equipped with the fluting, centralizer body (2) are located the grooved inner chamber, the top of sleeve (1) is equipped with the hole, the top of top connection (3) and the inner chamber swing joint in hole.

8. A lantern-type centralizer as claimed in claim 4, wherein: the second pull rope (19), the first pull rope (14), the third pull rope (20) and the fourth pull rope (18) are all made of alloy steel, the second extrusion plate (15) is provided with a movable hole, the fourth pull rope (18) is movably connected with the inner cavity of the movable hole, and the inner wall of the movable hole is fixedly connected with a soft rubber cushion.