CN216714350U

CN216714350U - Packer for oil well

Info

Publication number: CN216714350U
Application number: CN202220153353.5U
Authority: CN
Inventors: 尚俊涛; 田彦; 成卫海; 王永刚; 徐民坤; 王修朝; 魏景卫
Original assignee: DONGYING BAIHUA PETROLEUM TECHNOLOGY DEVELOPMENT CO LTD
Current assignee: DONGYING BAIHUA PETROLEUM TECHNOLOGY DEVELOPMENT CO LTD
Priority date: 2022-01-20
Filing date: 2022-01-20
Publication date: 2022-06-10
Anticipated expiration: 2032-01-20

Abstract

The utility model discloses a packer for an oil well, which comprises a right end of a packer shell, wherein a circular groove I is formed in the middle of the left side of the right end of the packer shell, a rubber ring is fixedly installed on the left side of the right end of the packer shell, the left end of the packer shell is fixedly installed on the left side of the rubber ring, a circular groove II is formed in the middle of the left side of the left end of the packer shell, and a circular groove III is formed in the middle of the right side in the circular groove II. The oil well mouth sealing device is reasonable in structural design, convenient to use and simple to operate, the corresponding first arc-shaped plate and the corresponding second arc-shaped plate move outwards under the action of the elastic force of the second spring to extrude the rubber ring, and the rubber ring is in contact with the side wall of the oil well mouth in the extrusion process to form a sealing state so as to achieve a sealing state of the oil well mouth; meanwhile, the transverse column drives the rotating plate and the supporting plate to move to the rectangular groove area, and the rotating plate and the supporting plate rotate outwards through the rectangular groove around the rotating shaft under the action of the elastic force of the third spring, so that the supporting plate is clamped at an oil well mouth to fix the packer in a horizontal state.

Description

Packer for oil well

Technical Field

The utility model relates to the field of oil well packing, in particular to a packer for an oil well.

Background

Currently, packers are important tools for packing oil formations in casing. Its main element is a rubber tube, and under the action of hydraulic power or machinery the rubber tube can be expanded to seal oil and the annular space of casing tube, and can separate upper and lower oil layers to attain a certain construction goal, and said invented packer also can be used for sealing oil well. However, the existing packer needs to pump high pressure into the oil pipe to achieve a sealing effect, but on site, not all oil pipes can bear high pressure, so that insufficient pressure often occurs, and a sealing effect cannot be achieved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a packer for an oil well, which aims to solve the problems in the prior art.

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

a packer for an oil well comprises a right end of a packer shell, wherein a circular groove I is formed in the middle of the left side of the right end of the packer shell, a rubber ring is fixedly arranged on the left side of the right end of the packer shell, a circular groove II is formed in the middle of the left side of the left end of the packer shell, a circular groove III is formed in the middle of the right side in the circular groove II, the diameter of the circular groove III is larger than that of the circular groove II, the circular groove III is communicated with the inside of the rubber ring, the diameter of the circular groove III is the same as the inner diameter of the rubber ring, a cross post is jointly arranged in the circular groove II and the circular groove III, the right end of the cross post penetrates through the rubber ring and is positioned in the right end of the packer shell, the cross post can move in the circular groove II, the circular groove III and the rubber ring, two first grooves which are symmetrically distributed front and back are respectively formed in the top surface and the bottom surface of the cross post, a first arc plate is arranged in the middle of the top surface of the cross post, a second arc plate is arranged in the first groove, the second arc plate is hinged with the corresponding first arc plate, the second arc plate and the corresponding first arc plate just can form a semicircular plate, the second arc plate can move in the corresponding first groove, two first strong electromagnets which are symmetrically distributed front and back are fixedly arranged on the inner side of the first arc plate, a first iron plate is fixedly arranged on one side of the second arc plate corresponding to the first arc plate, the first iron plate corresponds to the first strong electromagnets, the first iron plate is connected with the corresponding first strong electromagnets through first springs, the first iron plate is matched with the corresponding first strong electromagnets, second grooves are respectively arranged on the middle parts of the top surface and the bottom surface of the cross column, a second strong electromagnet is fixedly arranged on the inner side of the second groove, a second iron plate is fixedly arranged on the middle part of the inner side of the first arc plate, the second iron plate corresponds to the second strong electromagnets, and the second iron plate is connected with the corresponding second strong electromagnets through second springs, the second iron plate is matched with a corresponding second strong electromagnet, the middle part of the right end of the cross post is fixedly provided with a connecting block, the middle part of the right side of the connecting block is provided with a third groove, the upper end and the lower end of the third groove are both opened, two rotating plates are arranged in the third groove, the two rotating plates are arranged in front of and behind each other, a rotating shaft is arranged in the third groove, the front end of the rotating shaft is connected with the inner wall of the front side of the third groove through a bearing, the rear end of the rotating shaft penetrates through the two rotating plates and is connected with the inner wall of the rear side of the third groove through a bearing, the rotating plates can rotate in the third groove, the opposite sides of the two rotating plates are connected through a third spring, the right side of each rotating plate is fixedly provided with a supporting plate, the supporting plate and the corresponding rotating plate are of an integral structure, the outer end of the left side of the supporting plate is contacted with the inner wall of the circular groove I, the integral structure formed by the rotating plates and the supporting plate can rotate in the circular groove I, the top and the bottom of the right end of the packer shell are provided with rectangular grooves, the rectangular channel communicates with each other with circular slot I is inside, and an organic whole structure that rotor plate and backup pad constitute is corresponding with the rectangular channel, and rotor plate and backup pad can be at the rectangular channel internal rotation that corresponds, and the guide way is seted up respectively to both sides around in the circular slot I, is equipped with the guide bar in the guide way, and the guide bar can be followed and is controlled about the corresponding guide way, the inner fixed connection spreader of guide bar.

The right end of the packer shell, the rubber ring and the left end of the packer shell are connected through epoxy resin adhesives.

The right end of the packer shell and the left end of the packer shell form the packer shell.

The packer for the oil well is characterized in that the rubber ring is made of a natural rubber material.

The packer for the oil well is characterized in that the outer side surface of the supporting plate is provided with anti-skid lines.

The utility model has the advantages that: the oil well mouth sealing device is reasonable in structural design, convenient to use and simple to operate, the corresponding first arc-shaped plate and the corresponding second arc-shaped plate move outwards under the action of the elastic force of the second spring to extrude the rubber ring, and the rubber ring is in contact with the side wall of the oil well mouth in the extrusion process to form a sealing state so as to achieve a sealing state of the oil well mouth; meanwhile, the transverse column drives the rotating plate and the supporting plate to move to the rectangular groove area, and the rotating plate and the supporting plate rotate outwards through the rectangular groove around the rotating shaft under the action of the elastic force of the third spring, so that the supporting plate is clamped at an oil well mouth to fix the packer in a horizontal state.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

FIG. 1 is a schematic structural view of the present invention; fig. 2 is a schematic structural view of the cross-post.

Reference numerals: 1. the right end of the packer shell; 2. a circular groove I; 3. a rubber ring; 4. the left end of the packer shell; 5. a circular groove II; 6. a circular groove III; 7. a cross post; 8. a first groove; 9. a first arc-shaped plate; 10. a second arc-shaped plate; 11. a first strong electromagnet; 12. a first iron plate; 13. a first spring; 14. a second groove; 15. a second strong electromagnet; 16. a second iron plate; 17. a second spring; 18. connecting blocks; 19. a third groove; 20. a rotating plate; 21. a rotating shaft; 22. a third spring; 23. a support plate; 24. a rectangular groove; 25. a guide groove; 26. guide rod

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all embodiments of the present invention. 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.

As shown in fig. 1-2, a packer for an oil well comprises a right end 1 of a packer housing, a circular groove I2 is formed in the middle of the left side of the right end 1 of the packer housing, a rubber ring 3 is fixedly installed on the left side of the right end 1 of the packer housing, a left end 4 of the packer housing is fixedly installed on the left side of the rubber ring 3, a circular groove II5 is formed in the middle of the left side of the left end 4 of the packer housing, a circular groove III6 is formed in the middle of the inner right side of the circular groove II5, the diameter of the circular groove III6 is larger than that of the circular groove II5, the circular groove III6 is communicated with the inside of the rubber ring 3, the diameter of the circular groove III6 is the same as the inner diameter of the rubber ring 3, a transverse column 7 is jointly arranged in the circular groove II5 and the circular groove III6, the right end of the transverse column 7 penetrates through the rubber ring 3 and is located in the right end 1 of the packer housing, the transverse column 7 can move in the circular groove II5, the circular groove III6 and the rubber ring 3, two first grooves 8 are symmetrically distributed front and back, the middle part of the top surface of the cross post 7 is provided with a first arc-shaped plate 9, a second arc-shaped plate 10 is arranged in the first groove 8, the second arc-shaped plate 10 is hinged with the corresponding first arc-shaped plate 9, the second arc-shaped plate 10 and the corresponding first arc-shaped plate 9 just can form a semicircular plate, the second arc-shaped plate 10 can move in the corresponding first groove 8, two first strong electromagnets 11 which are symmetrically distributed front and back are fixedly arranged at the inner side of the first arc-shaped plate 9, a first iron plate 12 is fixedly arranged at one side of the second arc-shaped plate 10 corresponding to the first arc-shaped plate 9, the first iron plate 12 corresponds to the first strong electromagnet 11, the first iron plate 12 is connected with the corresponding first strong electromagnet 11 through a first spring 13, the first iron plate 12 is matched with the corresponding first strong electromagnet 11, the middle parts of the top surface and the bottom surface of the cross post 7 are respectively provided with a second groove 14, a second strong electromagnet 15 is fixedly arranged at the inner side of the second groove 14, a second iron plate 16 is fixedly arranged in the middle of the inner side of the first arc-shaped plate 9, the second iron plate 16 corresponds to a second strong electromagnet 15, the second iron plate 16 is connected with the corresponding second strong electromagnet 15 through a second spring 17, the second iron plate 16 is matched with the corresponding second strong electromagnet 15, a connecting block 18 is fixedly arranged in the middle of the right end of the transverse column 7, a third groove 19 is formed in the middle of the right side of the connecting block 18, both the upper end and the lower end of the third groove 19 are open, two rotating plates 20 are arranged in the third groove 19, a rotating shaft 21 is arranged in the third groove 19 after the two rotating plates 20 are in tandem, the front end of the rotating shaft 21 is connected with the inner wall of the front side of the third groove 19 through a bearing, the rear end of the rotating shaft 21 penetrates through the two rotating plates 20 and is connected with the inner wall of the rear side of the third groove 19 through a bearing, the rotating plates 20 can rotate in the third groove 19, the opposite sides of the two rotating plates 20 are connected through a third spring 22, a supporting plate 23 is fixedly arranged on the right side of the rotating plate 20, backup pad 23 is structure as an organic whole with corresponding rotor plate 20, backup pad 23 left side outer end and circular slot I2 inner wall contact, and rotor plate 20 and the integrative structure that backup pad 23 constitutes can be at circular slot I2 internal rotation, rectangular channel 24 is seted up to packer casing right-hand member 1 top and bottom, rectangular channel 24 communicates with each other with circular slot I2 is inside, the integrative structure that rotor plate 20 and backup pad 23 constitute corresponds with rectangular channel 24, and rotor plate 20 and backup pad 23 can rotate at the rectangular channel 24 that corresponds, guide way 25 is seted up respectively to both sides around in the circular slot I2, be equipped with guide bar 26 in the guide way 25, guide bar 26 can remove about following the guide way that corresponds, guide bar 26 inner fixed connection spreader 7. When the utility model is used, the packer is put into an oil well mouth to be sealed, a push rod is put into a circular groove II5 at the left end 4 of the packer shell to push a cross column 7, so that a first arc-shaped plate 9 enters a rubber ring 3, meanwhile, a second strong electromagnet 15 is powered off and loses magnetism, the second strong electromagnet 15 no longer adsorbs a second iron plate 16, the first arc-shaped plate 9 moves outwards under the action of the elasticity of a second spring 17, after the outer side of the first arc-shaped plate 10 is attached to the inner side of the rubber ring 3, the first strong electromagnet 11 is powered off and loses magnetism, the first strong electromagnet 11 no longer adsorbs a first iron plate 12, the second arc-shaped plate 10 rotates outwards around a corresponding hinged point and expands under the action of the elasticity of the first spring 13, at the moment, the two second arc-shaped plates 10 and the corresponding first arc-shaped plates 9 form a semi-circular plate, under the action of the elasticity of the second spring 17, the two second arc-shaped plates 10 and the corresponding first arc-shaped plates 9 continue to move outwards to extrude the rubber ring 3, the rubber ring 3 is contacted with the inner wall of the oil wellhead to form a sealing state in the extrusion process, so that the oil wellhead is sealed; the cross column 7 moves rightwards and simultaneously drives the rotating plate 20 and the supporting plate 23 to move towards the position of the right rectangular groove 24, at the moment, the rotating plate 20 and the supporting plate 23 are not limited by the inner wall of the circular groove I2 any more, under the action of the elastic force of the third spring 22, the rotating plate 20 and the supporting plate 23 rotate outwards around the rotating shaft 21 through the rectangular groove 24, when the first arc-shaped plate 9 moves into the rubber ring 3, the cross column 7 stops rotating, and at the moment, the supporting plate 23 is just rotated to the horizontal state and clamped at an oil well head to fix a packer; the oil well mouth sealing device is reasonable in structural design, convenient to use and simple to operate, the corresponding first arc-shaped plate 9 and the corresponding second arc-shaped plate 10 move outwards under the action of the elastic force of the second spring 17 to extrude the rubber ring 3, and the rubber ring 3 is in contact with the side wall of the oil well mouth in the extrusion process to form a sealing state, so that the oil well mouth is sealed; meanwhile, the cross column 7 drives the rotating plate 20 and the supporting plate 23 to move to the area of the rectangular groove 24, and the rotating plate 20 and the supporting plate 23 rotate outwards around the rotating shaft 21 through the rectangular groove 24 under the action of the elastic force of the third spring 22, so that the supporting plate 23 rotates to the horizontal state and is clamped on a wellhead of an oil well to fix a packer.

Specifically, the right end 1 of the packer housing, the rubber ring 3 and the left end 4 of the packer housing described in this embodiment are connected by an epoxy adhesive. The epoxy resin adhesive is convenient to cure, strong in adhesive force, low in shrinkage, stable in chemical property and resistant to mould; the process is simple, excessive pressure is not required to be applied, and the rubber gasket has good insulativity, chemical corrosion resistance and better oil resistance and solvent resistance.

Specifically, the right end 1 of the packer housing and the left end 4 of the packer housing described in this embodiment constitute the packer housing.

Further, the material of the rubber ring 3 in this embodiment is a natural rubber material. The natural rubber material has excellent rebound resilience, insulating property, water resistance, wear resistance and pressure resistance.

Furthermore, the outer side surface of the supporting plate 23 according to this embodiment is provided with anti-slip threads. The anti-slip pattern increases the friction between the support plate 23 and the surface of the oil well mouth, so that the support plate is fixed more firmly.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A packer for an oil well is characterized in that: including packer shell right-hand member (1), circular slot I (2) are seted up to packer shell right-hand member (1) left side middle part, packer shell right-hand member (1) left side fixed mounting rubber circle (3), rubber circle (3) left side fixed mounting packer shell left end (4), circular slot II (5) are seted up to packer shell left side middle part, circular slot III (6) are seted up to right side middle part in circular slot II (5), the diameter of circular slot III (6) is greater than the diameter of circular slot II (5), and circular slot III (6) communicate with each other with rubber circle (3) inside, the diameter size of circular slot III (6) is the same with the internal diameter size of rubber circle (3), be equipped with spreader (7) in circular slot II (5) and circular slot III (6) jointly, spreader (7) right-hand member passes rubber circle (3) and is located inside packer shell right-hand member (1), and spreader (7) can be at circular slot II (5) the, The circular groove III (6) and the rubber ring (3) move in the circular groove III and the rubber ring (3), the top surface and the bottom surface of the transverse column (7) are respectively provided with two first grooves (8) which are symmetrically distributed front and back, the middle part of the top surface of the transverse column (7) is provided with a first arc-shaped plate (9), a second arc-shaped plate (10) is arranged in each first groove (8), each second arc-shaped plate (10) is hinged with the corresponding first arc-shaped plate (9), each second arc-shaped plate (10) and the corresponding first arc-shaped plate (9) just can form a semicircular plate, each second arc-shaped plate (10) can move in the corresponding first groove (8), two first strong electromagnets (11) which are symmetrically distributed front and back are fixedly arranged on the inner side of each first arc-shaped plate (9), a first iron plate (12) is fixedly arranged on one side of each second arc-shaped plate (10) corresponding to the corresponding first arc-shaped plate (9), and the first iron plates (12) correspond to the first strong electromagnets (11), the first iron plate (12) is connected with the corresponding first strong electromagnet (11) through a first spring (13), the first iron plate (12) is matched with the corresponding first strong electromagnet (11), the middle parts of the top surface and the bottom surface of the transverse column (7) are respectively provided with a second groove (14), the inner side of the second groove (14) is fixedly provided with a second strong electromagnet (15), the middle part of the inner side of the first arc-shaped plate (9) is fixedly provided with a second iron plate (16), the second iron plate (16) is corresponding to the second strong electromagnet (15), the second iron plate (16) is connected with the corresponding second strong electromagnet (15) through a second spring (17), the second iron plate (16) is matched with the corresponding second strong electromagnet (15), the middle part of the right end of the transverse column (7) is fixedly provided with a connecting block (18), the middle part of the right side of the connecting block (18) is provided with a third groove (19), the upper end and the lower end of the third groove (19) are both open, two rotating plates (20) are arranged in a third groove (19), the two rotating plates (20) are arranged in front of each other and behind each other, a rotating shaft (21) is arranged in the third groove (19), the front end of the rotating shaft (21) is connected with the inner wall of the front side of the third groove (19) through a bearing, the rear end of the rotating shaft (21) penetrates through the two rotating plates (20) and is connected with the inner wall of the rear side of the third groove (19) through a bearing, the rotating plates (20) can rotate in the third groove (19), the opposite sides of the two rotating plates (20) are connected through a third spring (22), a supporting plate (23) is fixedly installed on the right side of each rotating plate (20), the supporting plates (23) and the corresponding rotating plates (20) are of an integral structure, the outer ends of the left sides of the supporting plates (23) are in contact with the inner wall of the circular groove I (2), the integral structure formed by the rotating plates (20) and the supporting plates (23) can rotate in the circular groove I (2), the top and the bottom of a rectangular groove (24) is formed at the right end (1) of the packer shell, rectangular channel (24) communicate with each other with circular slot I (2) inside, an organic whole structure that rotor plate (20) and backup pad (23) constitute is corresponding with rectangular channel (24), and rotor plate (20) and backup pad (23) can be at rectangular channel (24) internal rotation that corresponds, guide way (25) are seted up respectively to both sides around in circular slot I (2), be equipped with guide bar (26) in guide way (25), control about guide bar (26) can follow the guide way that corresponds, guide bar (26) inner fixed connection spreader (7).

2. A packer for oil well according to claim 1, wherein: the right end (1) of the packer shell, the rubber ring (3) and the left end (4) of the packer shell are connected by epoxy resin adhesive.

3. An oil well packer as claimed in claim 1, wherein: the right end (1) of the packer shell and the left end (4) of the packer shell form the packer shell.

4. An oil well packer as claimed in claim 1, wherein: the rubber ring (3) is made of a natural rubber material.

5. An oil well packer as claimed in claim 1, wherein: the outer side surface of the supporting plate (23) is provided with anti-skid grains.