Cleaning device for oilfield water injection packer

Abstract

The utility model discloses an oil field water injection packer cleaning device which comprises a box body, a plurality of supporting legs are fixed at the bottom of the box body, the bottom of the box body is rotatably connected with a lower rotating disc, a clamping mechanism is arranged on the upper portion of the interior of the box body, and the clamping mechanism comprises an upper rotating disc, a motor and a screw rod. A rotation limiting mechanism is arranged on the outer side of the clamping mechanism, the rotation limiting mechanism comprises a circular ring, a limiting rod and a moving ring, a spraying pipe is fixed in the box body, and a plurality of spraying heads are fixed to the outer side wall of the spraying pipe. According to the cleaning device for the oilfield water injection packer, the clamping mechanism is arranged, the packer is inserted into the lower circular groove, then an upper rotating disc is held, a motor is started, the motor drives a screw rod to rotate, the screw rod rotates to enable the upper rotating disc to move downwards, in this way, the upper circular groove is connected with the top of the packer in an inserted mode, and the upper rotating disc and a lower rotating disc are folded to clamp the packer; the motor drives the clamping mechanism, the packer and the lower rotating disc to rotate, and the packer rotates for cleaning.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning devices, in particular to an oilfield water injection packer cleaning device. Background Art

[0002] Stratified water injection is a water injection method that places packers in the water injection well to separate the oil layers with large permeability differences, and then uses water distributors to distribute water in different layers, so that the water injection volume of the high permeability layer can be controlled, and the water injection of the medium and low permeability oil layers can be strengthened, so that the oil layers can fully play their role. When injecting water into oil field water injection wells in different layers, water injection packers are often used. Water injection packers are used to separate the wellbore sections corresponding to the oil layers in different areas of the reservoir in the wellbore, so as to facilitate the purpose of injecting water into different oil layers through water distributors.

[0003] After use, the packer needs to be cleaned to remove stains on the surface so as to facilitate next use. The existing cleaning device is inconvenient to use, and the clamping and rotation are controlled by two systems, which is very troublesome. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides an oilfield water injection packer cleaning device, which solves the problems raised by the above-mentioned background technology.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: an oilfield water injection packer cleaning device, comprising a box body, a plurality of supporting legs are fixed to the bottom of the box body, a lower turntable is rotatably connected to the bottom of the box body, a clamping mechanism is provided on the upper part of the interior of the box body, the clamping mechanism includes an upper turntable, a motor and a screw, a rotation limiting mechanism is provided on the outer side of the clamping mechanism, the rotation limiting mechanism includes a circular ring, a limiting rod and a movable ring, a nozzle is fixed inside the box body, a plurality of nozzles are fixed to the outer side wall of the nozzle, a plurality of leakage holes are opened at the bottom of the box body, a fixed cylinder is fixed to the bottom of the box body, a leakage pipe is fixed to the bottom of the fixed cylinder, and a box door is rotatably connected to the front surface of the box body.

[0006] Preferably, the inner wall of the upper turntable and the outer wall of the screw are screwed together, the bottom of the motor and the top of the box are fixedly connected, the output shaft of the motor passes through the box and is fixedly connected to the top of the screw, and circular grooves are provided on opposite sides of the upper turntable and the lower turntable.

[0007] Preferably, the inner wall of the circular ring is rotatably connected to the outer wall of the upper turntable, the top of the circular ring is provided with two sliding holes penetrating up and down, the inner wall of the sliding hole is slidably connected to the outer wall of the limiting rod, and the top of the limiting rod is fixedly connected to the inner upper surface of the box body.

[0008] Preferably, the outer wall of the upper turntable is provided with a plurality of receiving holes, a first spring is fixed inside the receiving hole, a stopper is fixed to the other end of the first spring, and two ratchet grooves are provided on the inner wall of the circular ring, and the inclined surfaces of the two ratchet grooves are opposite.

[0009] Preferably, a plurality of circular holes are formed on the inner upper surface of the circular groove, a second spring is fixed inside the circular hole, and the other end of the second spring is fixedly connected to the top of the movable ring.

[0010] Preferably, the outer side wall of the movable ring is provided with a plurality of grooves, a pull rope is fixed inside the groove, and the other end of the pull rope passes through the upper turntable and is fixedly connected to one end of the stop block below close to the first spring.

[0011] The utility model provides an oilfield water injection packer cleaning device. Compared with the prior art, it has the following beneficial effects:

[0012] 1. The oilfield water injection packer cleaning device is configured to insert the packer into the inner part of the lower circular groove by setting a clamping mechanism, then hold the upper turntable, start the motor, the motor drives the screw to rotate, the screw rotates to move the upper turntable downward, so that the upper circular groove and the top of the packer are plugged, the upper turntable and the lower turntable are closed to clamp the packer, the motor drives the clamping mechanism, the packer and the lower turntable to rotate, and the packer rotates to clean.

[0013] 2. The oilfield water injection packer cleaning device is provided with a rotation limiting mechanism, wherein the lower block and the lower ratchet groove abut against each other, thereby limiting the rotation of the upper turntable. When the upper turntable moves downward, the moving ring contacts the packer, the packer pushes the moving ring, the moving ring pulls the pull rope, and the pull rope pulls the lower block. In this way, the motor drives the screw to rotate, and the screw drives the upper turntable, the packer and the lower turntable to rotate, and the packer rotates to clean. After cleaning, the motor drives the screw to reverse, and the upper block and the upper ratchet groove block toward each other, thereby limiting the rotation of the upper turntable, and causing the upper turntable to rise and return to its original position. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the utility model when viewed from above;

[0016] Figure 3 It is a cross-sectional structural schematic diagram of the clamping mechanism and the rotation limiting mechanism in the utility model;

[0017] Figure 4 It is a structural schematic diagram of the moving ring in the utility model.

[0018] In the figure: 1. motor; 2. box door; 3. nozzle; 4. box body; 5. nozzle; 6. circular groove; 7. lower turntable; 8. leakage hole; 9. leakage pipe; 10. support leg; 11. fixed cylinder; 12. sliding hole; 13. storage hole; 14. stopper; 15. first spring; 16. pull rope; 17. rotation limiting mechanism; 18. moving ring; 19. second spring; 20. circular hole; 21. screw; 22. circular ring; 23. limit rod; 24. ratchet groove; 25. groove; 26. clamping mechanism; 27. upper turntable. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-4 The utility model provides a technical solution: an oilfield water injection packer cleaning device, comprising a box body 4, a plurality of supporting legs 10 are fixed at the bottom of the box body 4, a lower turntable 7 is rotatably connected to the bottom of the box body 4, a clamping mechanism 26 is arranged on the upper part of the interior of the box body 4, the clamping mechanism 26 comprises an upper turntable 27, a motor 1 and a screw 21, a rotation limiting mechanism 17 is arranged on the outer side of the clamping mechanism 26, the rotation limiting mechanism 17 comprises a ring 22, a limit rod 23 and a moving ring 18, a nozzle 5 is fixed inside the box body 4, a plurality of nozzles 3 are fixed on the outer side wall of the nozzle 5, a plurality of leakage holes 8 are opened at the bottom of the box body 4, a fixed cylinder 11 is fixed at the bottom of the box body 4, a leakage pipe 9 is fixed at the bottom of the fixed cylinder 11, and the front surface of the box body 4 The box door 2 is rotatably connected, the inner wall of the upper turntable 27 and the outer wall of the screw 21 are screwed, the bottom of the motor 1 and the top of the box body 4 are fixedly connected, the output shaft of the motor 1 passes through the box body 4 and is fixedly connected to the top of the screw 21, and circular grooves 6 are opened on the opposite sides of the upper turntable 27 and the lower turntable 7. The packer is inserted into the inner part of the circular groove 6 below, and then the upper turntable 27 is held and the motor 1 is started. The motor 1 rotates with the screw 21, and the rotation of the screw 21 causes the upper turntable 27 to move downward, so that the upper circular groove 6 and the top of the packer are plugged in, the upper turntable 27 and the lower turntable 7 are closed to clamp the packer, and the motor 1 rotates with the clamping mechanism 26, the packer and the lower turntable 7, and the nozzle 3 sprays cleaning fluid, and the packer rotates to clean.

[0021] Furthermore, the inner wall of the circular ring 22 is rotatably connected to the outer wall of the upper rotating disk 27, and two sliding holes 12 penetrating from top to bottom are provided on the top of the circular ring 22. The inner wall of the sliding hole 12 is slidably connected to the outer wall of the limiting rod 23, and the top of the limiting rod 23 is fixedly connected to the inner upper surface of the box body 4. The outer wall of the upper rotating disk 27 is provided with a plurality of storage holes 13, and a first spring 15 is fixed inside the storage hole 13, and a stopper 14 is fixed to the other end of the first spring 15. The inner wall of the circular ring 22 is provided with two ratchet grooves 24, and the inclined surfaces of the two ratchet grooves 24 are opposite. A plurality of circular holes 20 are provided on the inner upper surface of the upper circular groove 6, and a second spring 19 is fixed inside the circular hole 20. The other end of the second spring 19 is fixedly connected to the top of the movable ring 18, and the outer wall of the movable ring 18 A plurality of grooves 25 are provided, and a pull rope 16 is fixed inside the groove 25. The other end of the pull rope 16 passes through the upper turntable 27 and is fixedly connected to one end of the lower block 14 close to the first spring 15. The lower block 14 and the lower ratchet groove 24 abut against each other, thereby limiting the rotation of the upper turntable 27. When the upper turntable 27 moves downward, the moving ring 18 contacts the packer, and the packer pushes the moving ring 18. The moving ring 18 pulls the pull rope 16, and the pull rope 16 pulls the lower block 14. In this way, the motor 1 rotates with the screw 21, and the screw 21 rotates with the upper turntable 27, the packer and the lower turntable 7. The packer rotates and cleans. After cleaning, the motor 1 reverses with the screw 21, and the upper block 14 and the upper ratchet groove 24 block, thereby limiting the rotation of the upper turntable 27, so that the upper turntable 27 rises and returns to its original position.

[0022] During operation, the packer is inserted into the inner part of the circular groove 6 below, and the motor 1 is started. The motor 1 rotates with the screw 21, and the lower block 14 and the lower ratchet groove 24 abut against each other, thus limiting the rotation of the upper turntable 27. The screw 21 rotates to make the upper turntable 27 move downward, and when the upper turntable 27 moves downward, the movable ring 18 contacts the packer, and the packer pushes the movable ring 18, and the movable ring 18 pulls the pull rope 16, and the pull rope 16 pulls the lower block 14, and the upper turntable 27 and the lower turntable 7 are closed to clamp the packer, so that the screw 21 rotates with the upper turntable 27, the packer and the lower turntable 7, and the nozzle 3 sprays cleaning fluid, and the packer rotates to clean, and when cleaning is completed, the motor 1 reverses with the screw 21, and the upper block 14 and the upper ratchet groove 24 block, limiting the rotation of the upper turntable 27, so that the upper turntable 27 rises and returns to its original position.

[0023] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0024] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oilfield water injection packer cleaning device, comprising a housing (4), characterized in that: A plurality of supporting legs (10) are fixed to the bottom of the box (4), and a lower turntable (7) is rotatably connected to the bottom of the box (4). A clamping mechanism (26) is provided on the upper part of the box (4), and the clamping mechanism (26) comprises an upper turntable (27), a motor (1) and a screw (21). A rotation limiting mechanism (17) is provided on the outer side of the clamping mechanism (26), and the rotation limiting mechanism (17) comprises a circular ring (22), a limiting rod (23) and a movable ring (18). A nozzle (5) is fixed to the inside of the box (4), and a plurality of nozzles (3) are fixed to the outer wall of the nozzle (5). A plurality of leakage holes (8) are provided at the bottom of the box (4). A fixed cylinder (11) is fixed to the bottom of the box (4), and a leakage pipe (9) is fixed to the bottom of the fixed cylinder (11). A box door (2) is rotatably connected to the front surface of the box (4).

2. The oilfield water injection packer cleaning device according to claim 1, characterized in that: The inner wall of the upper turntable (27) is screwed to the outer wall of the screw rod (21); the bottom of the motor (1) is fixedly connected to the top of the box (4); the output shaft of the motor (1) passes through the box (4) and is fixedly connected to the top of the screw rod (21); and circular grooves (6) are provided on opposite sides of the upper turntable (27) and the lower turntable (7).

3. The oilfield water injection packer cleaning device according to claim 2, characterized in that: The inner wall of the circular ring (22) is rotatably connected to the outer wall of the upper turntable (27); the top of the circular ring (22) is provided with two sliding holes (12) penetrating upward and downward; the inner wall of the sliding hole (12) is slidably connected to the outer wall of the limiting rod (23); the top of the limiting rod (23) is fixedly connected to the inner upper surface of the box body (4).

4. The oilfield water injection packer cleaning device according to claim 3, characterized in that: The outer wall of the upper turntable (27) is provided with a plurality of receiving holes (13), a first spring (15) is fixed inside the receiving hole (13), a stopper (14) is fixed to the other end of the first spring (15), and the inner wall of the circular ring (22) is provided with two ratchet grooves (24), the inclined surfaces of the two ratchet grooves (24) are opposite.

5. The oilfield water injection packer cleaning device according to claim 4, characterized in that: A plurality of circular holes (20) are provided on the inner upper surface of the circular groove (6) above, a second spring (19) is fixed inside the circular hole (20), and the other end of the second spring (19) is fixedly connected to the top of the moving ring (18).

6. The oilfield water injection packer cleaning device according to claim 5, characterized in that: The outer wall of the movable ring (18) is provided with a plurality of grooves (25), a pull rope (16) is fixed inside the groove (25), the other end of the pull rope (16) passes through the upper turntable (27) and is fixedly connected to one end of the lower stopper (14) close to the first spring (15).

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