Soluble tubing plug for petroleum downhole operation

Abstract

The utility model relates to the technical field of tubing plugs, and discloses a soluble tubing plug for petroleum downhole operation, which comprises a plug, first gears are rotatably connected to the periphery of the top of the plug, racks are slidably connected to the periphery of the top of the inner wall of the plug, and the racks are meshed with the first gears. And a rotating plate is fixedly connected to the outer side of the first gear, a rubber ring is fixedly connected to the top of the rotating plate, sealing cloth is fixedly connected to the bottom of the rubber ring, the bottom of the sealing cloth is fixedly connected with the blanking plug, and reserved grooves are formed in the periphery of the inner wall of the blanking plug. According to the device, the fixing ring is pulled to move up and down along the reserved groove, the rack drives the first gear to rotate, and the rotating plate pulls the rubber ring to stretch out and draw back, so that installation and fixing operation of different devices is simple, convenient and flexible, an efficient and practical means is provided for device assembly and adjustment, and working convenience and adaptability are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil pipe plug technology field especially relates to a soluble oil pipe plug for petroleum downhole operation. BACKGROUND

[0002] Oil pipe plug is the key tool commonly used in petroleum exploitation and downhole operation, which is designed to block the oil pipe channel and prevent the flow of liquid or gas, so as to facilitate the blocking of oil pipe to prevent blowout during petroleum downhole operation, so as to facilitate the maintenance of the device, and a soluble oil pipe plug for petroleum downhole operation is needed.

[0003] Through the search, the patent of China patent publication number is: CN210422553U, discloses a soluble oil pipe plug for petroleum downhole operation, including the main part, the inside of the main part is provided with the processing step, the outer surface of the processing step is fixedly connected with the bottom plug, the outer surface of the processing step is fixedly connected with the sealing element near the bottom plug side, the outer surface of the sealing element is provided with the shear pin, the outer surface of the main part is fixedly connected with the side connecting piece. The soluble oil pipe plug for petroleum downhole operation is provided with the sealing element, which guarantees the safety factor of pressure operation and prevents the pollution to the environment of well site, and the operation is carried out without using well killing fluid, so as to eliminate the potential damage of well killing fluid to the production layer, and the next time, it is more convenient to plug and carry out pressure operation again, the bottom plug is broken according to the required pressure difference and oil pipe pressure through the setting of the processing step, the bottom plug can be dissolved in water, and water-soluble substance is produced, which will not cause the falling object in the well and will not cause the pollution to the formation, but the device cannot adjust the size of the main body in actual use, so that only the oil pipe of the same specification can be plugged, thereby reducing the practicability of the device. UTILITY MODEL CONTENTS

[0004] In order to make up for the above shortcomings, the utility model provides a soluble oil pipe plug for petroleum downhole operation, which aims at improving the problem of the oil pipe plugging device in the prior art that is not convenient for fixing different specifications of oil pipe.

[0005] In order to achieve the above object, the utility model discloses the following technical scheme: a kind of soluble oil pipe plug for petroleum downhole operation, including plug, the top of the plug is rotatably connected with first gear around, the inner wall top of the plug is slidably connected with rack around, the rack is engaged with the first gear, the outside of the first gear is fixedly connected with rotating plate, the top of the rotating plate is fixedly connected with rubber ring, the bottom of the rubber ring is fixedly connected with sealing cloth, the bottom of the sealing cloth is fixedly connected with the plug, the inner wall of the plug is provided with reserved slot around, the inside of the reserved slot is slidably connected with fixed ring, the inside of the fixed ring is fixedly connected with filter screen, the inner wall bottom of the plug is provided with bottom plug, the fixed ring is fixedly connected with the rack, the inside of the plug is provided with positioning mechanism.

[0006] Through the above technical scheme: when pulling fixed ring along reserved slot and doing the displacement in the direction of up and down, rack on fixed ring will also move synchronously, by the principle of meshing transmission, prompting first gear starts to rotate, and then drive rotating plate to rotate, finally pull rubber ring to produce movement and telescopic change, this mode can easily meet the installation and fixed requirement of different specifications device, operation is simple and flexible, provides practical and efficient method for the assembly and adjustment work of device, greatly improves work efficiency and adaptability.

[0007] As further description of the above technical scheme:

[0008] The positioning mechanism includes second gear, the second gear is rotatably connected to the inner wall bottom of the plug front side, the inner wall bottom of the plug left and right side is slidably connected with fixed plate, the outside of the fixed plate is provided with tooth slot, the fixed plate is engaged with the second gear through the tooth slot, the inner wall bottom of the plug is provided with positioning ring, the inside of the positioning ring is fixedly connected with the bottom plug, the outer wall left and right side of the positioning ring is provided with clamping groove, and the fixed plate is clamped with the clamping groove.

[0009] Through the above technical scheme: when operating, rotating second gear, by the action force generated by the intermeshing of second gear and tooth slot, drive both sides fixed plate to slide to left and right sides, when fixed plate displacement is accurately connected with the clamping groove on positioning ring and is clamped, positioning ring and bottom plug in its inside can be firmly fixed, the whole process only relies on rotation of gear and movement of fixed plate, can efficiently realize installation and fixation of bottom plug, operation is convenient and efficient.

[0010] As further description of the above technical scheme:

[0011] The outer wall left and right side of the rotating plate is fixedly connected with support, and the top of the support is fixedly connected with the rubber ring.

[0012] Through the technical scheme, the support can improve the structural strength of the device.

[0013] Further description of the technical scheme is as follows:

[0014] The inner wall of the plug is fixedly connected with mounting plates around the middle part, and the inner side of the mounting plate is fixedly connected with a connecting rod.

[0015] Through the technical scheme, the connecting rod can improve the structural strength of the device.

[0016] Further description of the technical scheme is as follows:

[0017] The outer wall of the plug is fixedly connected with a fixing sleeve, and the outer side of the fixing sleeve is fixedly connected with a plurality of rubber rings.

[0018] Through the technical scheme, the rubber ring can improve the friction of the device to facilitate the fixation of the device.

[0019] Further description of the technical scheme is as follows:

[0020] The top of the plug is fixedly connected with positioning blocks around the periphery, and the outer side of the positioning block is provided with a positioning hole.

[0021] Through the technical scheme, the screw installed in the positioning hole can facilitate the fixation of the device.

[0022] Further description of the technical scheme is as follows:

[0023] The bottom of the plug is fixedly connected with a mounting ring, and the outer side of the mounting ring is provided with a threaded groove.

[0024] Through the technical scheme, the threaded groove can facilitate the movement of the mounting ring.

[0025] Further description of the technical scheme is as follows:

[0026] The front bottom of the plug is rotatably connected with a knob, and the rear side of the knob penetrates the plug and is fixedly connected with the second gear.

[0027] Through the technical scheme, the knob can facilitate the rotation of the second gear.

[0028] The utility model has the following beneficial effects:

[0029] 1. The utility model discloses a simple and convenient flexible operation of installing and fixing the demand of different specifications device through the pulling fixed ring up and down along the reserved groove, and the upper rack moves, and the first gear rotates through the meshing transmission, drives the rotating plate to rotate, and pulls the rubber ring to move and stretch, thereby providing an effective means for the assembly and adjustment of the device, thereby improve the practicability of the device.

[0030] 2. The utility model discloses a simple gear rotation and fixed plate movement through the rotation of the second gear, and the left and right movement of the both sides fixed plate is driven by the meshing force of the gear groove, and the fixed plate is clamped in the clamping groove on the positioning ring after moving, and then the positioning ring and the inner bottom plug are fixed, thereby improving the convenience of the device. DRAWINGS

[0031] Figure 1 A perspective view of the soluble oil pipe plug for downhole operation of the utility model is provided;

[0032] Figure 2 A front view of the soluble oil pipe plug for downhole operation of the utility model is provided;

[0033] Figure 3 A top view of the soluble oil pipe plug for downhole operation of the utility model is provided;

[0034] Figure 4 A partial structure split view of the soluble oil pipe plug for downhole operation of the utility model is provided;

[0035] Figure 5 A partial structure split view of the positioning mechanism of the soluble oil pipe plug for downhole operation of the utility model is provided.

[0036] Legend:

[0037] 1, plug; 2, positioning mechanism; 201, second gear; 202, fixed plate; 203, gear groove; 204, positioning ring; 205, clamping groove; 3, first gear; 4, rack; 5, fixed ring; 6, filter screen; 7, rotating plate; 8, rubber ring; 9, reserved groove; 10, positioning block; 11, positioning hole; 12, fixed sleeve; 13, rubber ring; 14, knob; 15, support; 16, mounting ring; 17, thread groove; 18, mounting plate; 19, connecting rod; 20, bottom plug; 21, sealing cloth. DETAILED DESCRIPTION

[0038] With reference to the drawings in the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0039] With reference to Figure 1 , Figure 3 and Figure 4 , the present application provides an embodiment: a soluble tubing plug for oil downhole operation, comprising a plug 1, a first gear 3 is rotatably connected around the top of the plug 1, a rack 4 is slidably connected around the inner wall top of the plug 1, the rack 4 is meshingly connected with the first gear 3, a rotating plate 7 is fixedly connected to the outside of the first gear 3, a rubber ring 8 is fixedly connected to the top of the rotating plate 7, a sealing cloth 21 is fixedly connected to the bottom of the rubber ring 8, the bottom of the sealing cloth 21 is fixedly connected with the plug 1, a reserved groove 9 is formed around the inner wall of the plug 1, a fixing ring 5 is slidably connected to the inside of the reserved groove 9, a filter screen 6 is fixedly connected to the inside of the fixing ring 5, a bottom plug 20 is arranged at the bottom of the inner wall of the plug 1, the fixing ring 5 is fixedly connected with the rack 4, and a positioning mechanism 2 is arranged at the inside of the plug 1.

[0040] Specifically, the fixing ring 5 is pulled to displace up and down along the reserved groove 9, the rack 4 on the fixing ring 5 also moves up and down, the rack 4 drives the first gear 3 to rotate by using the meshing transmission principle, and then drives the rotating plate 7 to rotate, the rotating plate 7 pulls the rubber ring 8 to stretch and retract, so that various specifications of devices can be installed and fixed according to the stretching and retracting characteristics of the rubber ring 8.

[0041] With reference to Figure 1 , Figure 3 and Figure 5 , the positioning mechanism 2 comprises a second gear 201, the second gear 201 is rotatably connected to the inner wall bottom front side of the plug 1, a fixing plate 202 is slidably connected to the left and right sides of the inner wall bottom of the plug 1, a tooth groove 203 is formed in the outside of the fixing plate 202, the fixing plate 202 is meshingly connected with the second gear 201 through the tooth groove 203, a positioning ring 204 is arranged at the inner wall bottom of the plug 1, the inside of the positioning ring 204 is fixedly connected with the bottom plug 20, a clamping groove 205 is formed in the outer wall left and right sides of the positioning ring 204, and the fixing plate 202 is clamped in the clamping groove 205.

[0042] Specific, rotating the second gear 201, by virtue of its meshing with the tooth groove 203, prompting both sides of the fixed plate 202 to produce left and right displacement, with the movement of the fixed plate 202, it can be with the clamping groove 205 on the positioning ring 204 interlocking, thereby realizing the stable fixation of the positioning ring 204 and the inner side of the bottom plug, and then using the movement operation of the fixed plate 202 to quickly and efficiently install and fix the bottom plug 20, improve the installation efficiency and stability.

[0043] With reference to Figure 1 , Figure 2 and Figure 4 , the outer wall of the rotating plate 7 is fixedly connected with the bracket 15 on both sides, and the top of the bracket 15 is fixedly connected with the rubber ring 8; the inner wall of the plug 1 is fixedly connected with the mounting plate 18 around the middle, and the inner side of the mounting plate 18 is fixedly connected with the connecting rod 19; the outer wall of the plug 1 is fixedly connected with the fixed sleeve 12, and the outer side of the fixed sleeve 12 is fixedly connected with a plurality of rubber rings 13;

[0044] Specifically, the bracket 15 can improve the firmness and stability of the installation between the rubber ring 8 and the rotating plate 7, the connecting rod 19 on the mounting plate 18 can improve the structural strength of the device, and the rubber ring 13 on the fixed sleeve 12 can improve the friction of the device.

[0045] With reference to Figure 2 , Figure 3 and Figure 5 , the top of the plug 1 is fixedly connected with the positioning block 10 around the middle, and the outer side of the positioning block 10 is provided with the positioning hole 11; the bottom of the plug 1 is fixedly connected with the mounting ring 16, and the outer side of the mounting ring 16 is provided with the threaded groove 17; the front bottom of the plug 1 is rotatably connected with the knob 14, and the rear side of the knob 14 penetrates the plug 1 and is fixedly connected with the second gear 201;

[0046] Specifically, by installing the threaded part in the mounting hole 11 on the positioning block 10, the device can be conveniently installed and fixed, by the threaded groove 17 on the mounting ring 16, the device can be installed at the desired installation position by threaded connection, and by the knob 14, the second gear 201 can be conveniently rotated manually.

[0047] Working principle: before using the device, first pull the fixed ring 5 up and down along the reserved groove 9, and at the same time drive the rack 4 on the fixed ring 5 up and down, at this time drive the first gear 3 to rotate by meshing transmission, and with the rotation of the first gear 3, the rotating plate 7 will be rotated, so as to pull the rubber ring 8 to move, so as to install and fix the device of different specifications by the expansion and contraction of the rubber ring 8;

[0048] By rotating the second gear 201, the two sides of the fixed plate 202 can be moved left and right through the engagement of the second gear 201 and the tooth groove 203. At this time, through the movement of the fixed plate 202, the fixed plate 202 can be clamped with the clamping groove 205 on the positioning ring 204, so as to fix the positioning ring 204 and the bottom plug inside the positioning ring 204. In this way, the bottom plug 20 can be quickly installed and fixed through the movement of the fixed plate 202.

[0049] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing embodiments of the present application are described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the scope of protection of the present application.

Claims

1. A soluble tubing plug for use in oil downhole operations, comprising a plug (1), characterised in that: The top of the stopper (1) is rotatably connected with a first gear (3), the inner wall of the stopper (1) is slidably connected with a rack (4) at the top, the rack (4) is in meshing connection with the first gear (3), the outer side of the first gear (3) is fixedly connected with a rotating plate (7), the top of the rotating plate (7) is fixedly connected with a rubber ring (8), the bottom of the rubber ring (8) is fixedly connected with a sealing cloth (21), the bottom of the sealing cloth (21) is fixedly connected with the stopper (1), the inner wall of the stopper (1) is provided with a reserved groove (9) around, the inner side of the reserved groove (9) is slidably connected with a fixed ring (5), the inner side of the fixed ring (5) is fixedly connected with a filter screen (6), the bottom of the inner wall of the stopper (1) is provided with a bottom plug (20), the fixed ring (5) is fixedly connected with the rack (4), and the inner side of the stopper (1) is provided with a positioning mechanism (2).

2. A soluble tubing plug for use in oil downhole operations according to claim 1, characterized in that: The positioning mechanism (2) comprises a second gear (201), the second gear (201) is rotatably connected to the inner wall bottom of the stopper (1), the inner wall bottom of the stopper (1) is slidably connected with a fixed plate (202) on the left and right sides, the outer side of the fixed plate (202) is provided with a gear slot (203), the fixed plate (202) is in meshing connection with the second gear (201) through the gear slot (203), the inner wall bottom of the stopper (1) is provided with a positioning ring (204), the inner side of the positioning ring (204) is fixedly connected with the bottom plug (20), the outer wall of the positioning ring (204) is provided with a clamping groove (205) on the left and right sides, and the fixed plate (202) is clamped in the clamping groove (205).

3. A soluble tubing plug for use in oil downhole operations according to claim 1, characterized in that: The outer wall of the rotating plate (7) is fixedly connected with a support (15) on the left and right sides, and the top of the support (15) is fixedly connected with the rubber ring (8).

4. A soluble tubing plug for use in oil downhole operations according to claim 1, characterized in that: The inner wall of the stopper (1) is fixedly connected with a mounting plate (18) around the middle, and the inner side of the mounting plate (18) is fixedly connected with a connecting rod (19).

5. A soluble tubing plug for use in oil downhole operations according to claim 1, characterized in that: The outer wall of the stopper (1) is fixedly connected with a fixed sleeve (12), and the outer side of the fixed sleeve (12) is fixedly connected with a plurality of rubber rings (13).

6. A soluble tubing plug for use in oil downhole operations according to claim 1, characterized in that: The top of the stopper (1) is fixedly connected with a positioning block (10), and the outer side of the positioning block (10) is provided with a positioning hole (11).

7. A soluble tubing plug for use in oil downhole operations according to claim 1, characterized in that: The bottom of the stopper (1) is fixedly connected with a mounting ring (16), and the outer side of the mounting ring (16) is provided with a threaded groove (17).

8. A soluble tubing plug for use in oil downhole operations according to claim 2, characterized in that: The front bottom of the stopper (1) is rotatably connected with a knob (14), and the rear side of the knob (14) penetrates through the stopper (1) and is fixedly connected with the second gear (201).

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