Sand prevention packer

Abstract

The invention provides a sand control packer, and relates to the technical field of oil exploitation. The sand prevention packer comprises a first packer body and a second packer body, and a rotary adjusting assembly is arranged on the outer surface of the second packer body. According to the device, a driving round block is rotated, the driving round block drives a rotary limiting rod body to rotate, so that the rotary limiting rod body ascends while rotating, the rotary limiting rod body is separated from a threaded groove, a driving rotary ring is rotated, and the driving rotary ring drives a rotary mounting gear ring to rotate through two supporting mounting rods; the two fixed mounting gears drive two threaded adjusting rods to rotate, and due to the fact that the threaded adjusting rods are in threaded connection with first connecting supporting lugs, a first connecting mounting disc drives a first packer body to move, and the length of an outer sleeving fixing cylinder and the length of an inner movable connecting cylinder are adjusted; therefore, the length of the first packer body and the length of the second packer body are adjusted, and use under different conditions is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of oil extraction, and specifically to a sand control packer. Background Art

[0002] During the fracturing construction process of oil wells, a fracturing packer is a downhole tool widely used in the process of transforming oil and gas wells by hydraulic fracturing, and its performance directly affects the effect of fracturing construction. The setting method of some existing packers is to use the pressure in the pipe string to drive the driving components on the packer to extrude the rubber cylinder to move. After being extruded, the rubber cylinder expands and contacts the casing, thereby sealing the oil-casing annulus.

[0003] During setting, the fracturing fluid is mainly used for pressure conduction. During the setting process, in order to prevent the sand and gravel in the fracturing fluid from entering the packer and affecting its unsealing, it is necessary to perform sand control treatment on the packer. In the process of using traditional sand control packers, the length cannot be adjusted, resulting in the sand control packer not being applicable to various situations. Moreover, traditional sand control packers cannot be adjusted in angle underground, which brings inconvenience to the installation of the sand control packer. Summary of the Invention

[0004] (1) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the present invention provides a sand control packer, which solves the problems that in the process of using traditional sand control packers, the length cannot be adjusted, resulting in the sand control packer not being applicable to various situations, and moreover, traditional sand control packers cannot be adjusted in angle underground, which brings inconvenience to the installation of the sand control packer.

[0006] (2) Technical Solutions

[0007] To achieve the above object, the present invention is realized by the following technical solutions: A sand control packer includes a first packer body and a second packer body. A rotation adjustment assembly is provided on the outer surface of the second packer body. One end of the first packer body close to the second packer body is fixedly connected with an outer sleeve fixing cylinder. One end of the second packer body close to the first packer body is fixedly connected with an inner movable connection cylinder. The inner movable connection cylinder is slidably connected inside the outer sleeve fixing cylinder. A second connection mounting disc is fixedly connected to the outer surface of the second packer body. Two second connection support ears are fixedly connected to the outer surface of the second connection mounting disc. The two second connection support ears are symmetrically arranged. A threaded adjustment rod is rotatably connected through the surface of each second connection support ear. A drive adjustment assembly for driving the two threaded adjustment rods to rotate is provided on the outer surface of the second packer body. A first connection mounting disc is fixedly connected to the outer surface of the first packer body. Two first connection support ears are fixedly connected to the outer surface of the first connection mounting disc. The two first connection support ears are symmetrically arranged. The threaded adjustment rod is threadedly connected to the corresponding first connection support ear.

[0008] Preferably, the rotation adjustment assembly includes a connection mounting disc fixedly connected to the outer surface of the second packer body. Two vertical connection long rods are fixedly connected to the upper surface of the connection mounting disc. The two vertical connection long rods are symmetrically arranged. One end of the vertical connection long rod away from the connection mounting disc is connected with an operation assembly.

[0009] Preferably, the operation assembly includes a threaded connection short shaft threadedly connected inside the vertical connection long rod. One end of the threaded connection short shaft away from the vertical connection long rod is fixedly connected with an extended connection long rod.

[0010] Preferably, a plurality of rubber sealing rings are embedded on the outer surface of the inner movable connection cylinder. All the plurality of rubber sealing rings are in contact with the inner wall of the outer sleeve fixing cylinder.

[0011] Preferably, the drive adjustment assembly includes a rotation mounting gear ring rotatably connected to the outer surface of the second packer body. Two support mounting rods are fixedly connected to the upper surface of the rotation mounting gear ring. The two support mounting rods are symmetrically arranged. The tops of the two support mounting rods are jointly fixedly connected with a drive rotation ring. A limit assembly for limiting the drive rotation ring is connected to the outer surface of the second packer body.

[0012] Preferably, fixed mounting gears are fixedly connected to one ends of the two threaded adjustment rods. Both fixed mounting gears are meshed with the rotation mounting gear ring.

[0013] Preferably, the limiting component includes a rectangular connecting seat fixedly connected to the outer surface of the second packer body. A rotating limiting rod body is threadedly connected through the surface of the rectangular connecting seat. One end of the rotating limiting rod body is fixedly connected with a driving round block, and the other end of the rotating limiting rod body is threadedly connected to the upper surface of the driving rotating ring.

[0014] Preferably, a plurality of threaded grooves are formed on the upper surface of the driving rotating ring. The plurality of threaded grooves are arranged in an annular array, and the rotating limiting rod body is threadedly connected to one of the threaded grooves.

[0015] (III) Beneficial effects

[0016] The present invention provides a sand control packer, which has the following beneficial effects:

[0017] 1. In the present invention, when the driving round block is rotated, the driving round block drives the rotating limiting rod body to rotate, so that the rotating limiting rod body rotates and rises at the same time, causing the rotating limiting rod body to disengage from the threaded groove. Then, the driving rotating ring is rotated. The driving rotating ring drives the rotating installation tooth ring to rotate through two support mounting rods, so that the two fixed installation gears drive the two threaded adjusting rods to rotate. Since the threaded adjusting rod is threadedly connected to the first connecting ear, the first connecting ear can drive the first connecting mounting plate to move, so that the first connecting mounting plate drives the first packer body to move, adjusting the lengths of the outer sleeve fixed cylinder and the inner movable connecting cylinder, thereby adjusting the lengths of the first packer body and the second packer body, which is convenient for use in different situations.

[0018] 2. In the present invention, the vertical connecting long rod and the extended connecting long rod are threadedly connected through the threaded connecting short shaft to increase the length of the vertical connecting long rod, which is convenient for workers to operate at high places. The first packer body and the second packer body are adjusted to rotate through the two extended connecting long rods, changing the angles of the first packer body and the second packer body, which is convenient for installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structural schematic diagram of a sand control packer provided by the present invention;

[0020] Figure 2 is a front view of a sand control packer provided by the present invention;

[0021] Figure 3 is a structural schematic diagram of the outer sleeve fixed cylinder and the inner movable connecting cylinder of a sand control packer provided by the present invention;

[0022] Figure 4 is a sand control packer provided by the present invention Figure 1 structural schematic diagram at A in;

[0023] Figure 5 The structural schematic diagram of part B in a sand control packer provided by the present invention Figure 1 ;

[0024] Figure 6 The structural schematic diagram of part C in a sand control packer provided by the present invention Figure 1 ;

[0025] Wherein, 1 is the first packer body; 2 is the second packer body; 3 is the connecting and installing disc; 4 is the vertical connecting long rod; 5 is the threaded connecting short shaft; 6 is the extended connecting long rod; 7 is the outer sleeve fixing cylinder; 8 is the inner movable connecting cylinder; 9 is the rubber sealing ring; 10 is the first connecting and installing disc; 11 is the first connecting ear; 12 is the threaded adjusting rod; 13 is the second connecting and installing disc; 14 is the second connecting ear; 15 is the fixed installing gear; 16 is the rotating installing toothed ring; 17 is the supporting installing rod; 18 is the driving rotating ring; 19 is the rectangular connecting seat; 20 is the rotating limiting rod body Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention

[0027] Embodiment:

[0028] As Figures 1-6 shown, the embodiment of the present invention provides a sand control packer, including the first packer body 1 and the second packer body 2. A rotation adjustment assembly is arranged on the outer surface of the second packer body 2. The rotation adjustment assembly includes a connecting and installing disc 3 fixedly connected to the outer surface of the second packer body 2. Two vertical connecting long rods 4 are fixedly connected to the upper surface of the connecting and installing disc 3. The two vertical connecting long rods 4 are symmetrically arranged. One end of the vertical connecting long rod 4 far from the connecting and installing disc 3 is connected with an operation assembly. The operation assembly includes a threaded connecting short shaft 5 threadedly connected inside the vertical connecting long rod 4. One end of the threaded connecting short shaft 5 far from the vertical connecting long rod 4 is fixedly connected with an extended connecting long rod 6. The vertical connecting long rod 4 and the extended connecting long rod 6 are threadedly connected through the threaded connecting short shaft 5 to increase the length of the vertical connecting long rod 4, facilitating the operation of the staff at a high place. The first packer body 1 and the second packer body 2 are adjusted to rotate through the two extended connecting long rods 6

[0029] One end of the first packer body 1 close to the second packer body 2 is fixedly connected with an outer sleeve fixing cylinder 7. One end of the second packer body 2 close to the first packer body 1 is fixedly connected with an inner movable connection cylinder 8. The inner movable connection cylinder 8 is slidably connected inside the outer sleeve fixing cylinder 7. A plurality of rubber sealing rings 9 are embedded on the outer surface of the inner movable connection cylinder 8. All the plurality of rubber sealing rings 9 are in contact with the inner wall of the outer sleeve fixing cylinder 7. By providing the plurality of rubber sealing rings 9, the sealing performance between the outer sleeve fixing cylinder 7 and the inner movable connection cylinder 8 can be increased;

[0030] The outer surface of the second packer body 2 is fixedly connected with a second connection mounting disc 13. Two second connection lugs 14 are fixedly connected to the outer surface of the second connection mounting disc 13. The two second connection lugs 14 are symmetrically arranged. A threaded adjusting rod 12 is rotatably connected through the surface of each second connection lug 14. A driving and adjusting component for driving the two threaded adjusting rods 12 to rotate is arranged on the outer surface of the second packer body 2. The outer surface of the first packer body 1 is fixedly connected with a first connection mounting disc 10. Two first connection lugs 11 are fixedly connected to the outer surface of the first connection mounting disc 10. The two first connection lugs 11 are symmetrically arranged. The threaded adjusting rod 12 is threadedly connected with the corresponding first connection lug 11.

[0031] The driving and adjusting assembly includes a rotary mounting gear ring 16 rotatably connected to the outer surface of the second packer body 2. Two support mounting rods 17 are fixedly connected to the upper surface of the rotary mounting gear ring 16. The two support mounting rods 17 are symmetrically arranged. The tops of the two support mounting rods 17 are fixedly connected together with a driving rotary ring 18. A limiting assembly for limiting the driving rotary ring 18 is connected to the outer surface of the second packer body 2. One end of each of the two threaded adjusting rods 12 is fixedly connected with a fixed mounting gear 15. The two fixed mounting gears 15 are both meshed with the rotary mounting gear ring 16. The limiting assembly includes a rectangular connecting seat 19 fixedly connected to the outer surface of the second packer body 2. A rotary limiting rod body 20 is threadedly connected through the surface of the rectangular connecting seat 19. One end of the rotary limiting rod body 20 is fixedly connected with a driving round block. The other end of the rotary limiting rod body 20 is threadedly connected to the upper surface of the driving rotary ring 18. A plurality of threaded grooves are formed on the upper surface of the driving rotary ring 18. The plurality of threaded grooves are arranged in an annular array. The rotary limiting rod body 20 is threadedly connected to one of the threaded grooves. Rotate the driving round block, and the driving round block drives the rotary limiting rod body 20 to rotate, so that the rotary limiting rod body 20 rotates and rises at the same time, causing the rotary limiting rod body 20 to disengage from the threaded groove. At this time, the driving rotary ring 18 is no longer restricted, so that the driving rotary ring 18 can rotate. Rotate the driving rotary ring 18, and the driving rotary ring 18 drives the rotary mounting gear ring 16 to rotate through the two support mounting rods 17. Since the rotary mounting gear ring 16 is meshed with the two fixed mounting gears 15, the two fixed mounting gears 15 drive the two threaded adjusting rods 12 to rotate. Since the threaded adjusting rods 12 are threadedly connected to the first connecting lugs 11, the first connecting lugs 11 can drive the first connecting mounting plate 10 to move, so that the first connecting mounting plate 10 drives the first packer body 1 to move.

[0032] Working principle:

[0033] During use, during the installation process of the first packer body 1 and the second packer body 2, the vertical connecting long rod 4 and the extended connecting long rod 6 can be threadedly connected through the threaded connecting short shaft 5 to increase the length of the vertical connecting long rod 4, which is convenient for the staff to operate at a high place. The first packer body 1 and the second packer body 2 are adjusted to rotate through the two extended connecting long rods 6 to change the angles of the first packer body 1 and the second packer body 2.

[0034] When it is necessary to adjust the length between the first packer body 1 and the second packer body 2, first rotate the driving circular block. The driving circular block drives the rotation limiting rod body 20 to rotate, causing the rotation limiting rod body 20 to rise while rotating, so that the rotation limiting rod body 20 disengages from the threaded groove. At this time, the driving rotating ring 18 is no longer restricted, allowing the driving rotating ring 18 to rotate. Rotate the driving rotating ring 18, and the driving rotating ring 18 drives the rotating mounting gear ring 16 to rotate through the two support mounting rods 17. Since the rotating mounting gear ring 16 meshes with the two fixed mounting gears 15, the two fixed mounting gears 15 drive the two threaded adjusting rods 12 to rotate. Since the threaded adjusting rods 12 are threadedly connected to the first connecting ear 11, the first connecting ear 11 can drive the first connecting mounting disc 10 to move, causing the first connecting mounting disc 10 to drive the first packer body 1 to move, adjusting the length of the outer sleeve fixing cylinder 7 and the inner movable connecting cylinder 8, thereby adjusting the length between the first packer body 1 and the second packer body 2;

[0035] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a reference structure" does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0036] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sand control packer, comprising a first packer body (1) and a second packer body (2), characterized in that: A rotary adjustment assembly is provided on the outer surface of the second packer body (2). One end of the first packer body (1) close to the second packer body (2) is fixedly connected with an outer sleeve fixing cylinder (7). One end of the second packer body (2) close to the first packer body (1) is fixedly connected with an inner movable connection cylinder (8). The inner movable connection cylinder (8) is slidably connected inside the outer sleeve fixing cylinder (7). A second connection mounting disc (13) is fixedly connected to the outer surface of the second packer body (2). Two second connection lugs (14) are fixedly connected to the outer surface of the second connection mounting disc (13). The two second connection lugs (14) are symmetrically arranged. A threaded adjustment rod (12) is rotatably connected through the surface of each second connection lug (14). A drive adjustment assembly for driving the two threaded adjustment rods (12) to rotate is provided on the outer surface of the second packer body (2). A first connection mounting disc (10) is fixedly connected to the outer surface of the first packer body (1). Two first connection lugs (11) are fixedly connected to the outer surface of the first connection mounting disc (10). The two first connection lugs (11) are symmetrically arranged. The threaded adjustment rod (12) is threadedly connected to the corresponding first connection lug (11).

2. The sand control packer according to claim 1, characterized in that: The rotary adjustment assembly includes a connection mounting disc (3) fixedly connected to the outer surface of the second packer body (2). Two vertical connection long rods (4) are fixedly connected to the upper surface of the connection mounting disc (3). The two vertical connection long rods (4) are symmetrically arranged. One end of the vertical connection long rod (4) away from the connection mounting disc (3) is connected with an operation assembly.

3. The sand control packer according to claim 2, characterized in that: The operation assembly includes a threaded connection short shaft (5) threadedly connected inside the vertical connection long rod (4). One end of the threaded connection short shaft (5) away from the vertical connection long rod (4) is fixedly connected with an extended connection long rod (6).

4. The sand control packer according to claim 1, characterized in that: A plurality of rubber sealing rings (9) are embedded on the outer surface of the inner movable connection cylinder (8). The plurality of rubber sealing rings (9) are all in contact with the inner wall of the outer sleeve fixing cylinder (7).

5. The sand control packer according to claim 1, characterized in that: The drive adjustment assembly includes a rotary mounting gear ring (16) rotatably connected to the outer surface of the second packer body (2). Two support mounting rods (17) are fixedly connected to the upper surface of the rotary mounting gear ring (16). The two support mounting rods (17) are symmetrically arranged. The tops of the two support mounting rods (17) are jointly fixedly connected with a drive rotary ring (18). A limiting assembly for limiting the drive rotary ring (18) is connected to the outer surface of the second packer body (2).

6. The sand control packer according to claim 5, characterized in that: One ends of the two threaded adjustment rods (12) are both fixedly connected with fixed mounting gears (15). The two fixed mounting gears (15) are both meshed with the rotary mounting gear ring (16).

7. The sand control packer according to claim 5, wherein: The limiting component includes a rectangular connecting seat (19) fixedly connected to the outer surface of the second packer body (2). A rotary limiting rod body (20) is threadedly connected through the surface of the rectangular connecting seat (19). One end of the rotary limiting rod body (20) is fixedly connected with a driving circular block, and the other end of the rotary limiting rod body (20) is threadedly connected to the upper surface of the driving rotary ring (18).

8. The sand control packer according to claim 7, wherein: A plurality of threaded grooves are formed on the upper surface of the driving rotary ring (18), and the plurality of threaded grooves are arranged in an annular array. The rotary limiting rod body (20) is threadedly connected to one of the threaded grooves.

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