Novel isolation plug for dosing tool

Abstract

The utility model discloses a novel isolation plug for a dosing tool, which belongs to the technical field of dosing tools and comprises a first sealing section, a second sealing section, a central rod, a telescopic spring, a slider and an anchor tooth mechanism, and the central rod sequentially penetrates through the slider, the telescopic spring, the second sealing section, the anchor tooth mechanism and the first sealing section. A fixing assembly is arranged between one end of the center rod and one end of the sliding block, and a sliding mechanism is arranged in the other end of the center rod and the first sealing section; through cooperative use of the first sealing section, the second sealing section, the center rod, the telescopic spring, the sliding block, the anchor tooth mechanism and the sliding mechanism, the device can be prevented from moving up and down in the medicine storage pipe, the influence on the medicine adding effect is reduced, the service life of a sealing ring on the isolation plug is prolonged, and the safety of the device is improved. The isolation effect of the medicament of the underground drip dosing tool and the crude oil liquid in the shaft is ensured, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dosing tools, in particular to a novel isolation plug for dosing tools. Background Art

[0002] At present, the chemicals of downhole drip dosing tools need to be isolated from the crude oil liquid in the wellbore. Conventionally, a structure combining a rod-shaped metal weighted rod and a rubber sealing ring is used. In conventional use, this result prevents the isolation plug from moving up and down in the drug storage pipe due to the suction force of the oil pump in the sucker rod column if the screen is blocked. On the one hand, it affects the dosing effect, and on the other hand, it reduces the life of the rubber ring on the isolation plug, affecting the isolation effect.

[0003] A Chinese patent with a publication (announcement) number of CN217558299U discloses a multifunctional intelligent drip-feeding tool for oil wells, including an oil pumping unit and an oil pipe. The oil pumping unit is fixedly connected to the ground, the oil pipe is connected to the ground, the oil inlet end of the oil pumping unit is fixedly installed with an oil pump, the bottom end of the screen pipe is fixedly connected with a sand prevention short circuit, the bottom end of the sand prevention short circuit is provided with a first agent release valve sealedly connected to the inner wall of the oil pipe, the bottom end of the first agent release valve is provided with a second movable sealing section sealedly connected to the inner wall of the oil pipe, the first agent release valve and the second movable sealing section are filled with agent A, and the bottom of the second movable sealing section is filled with agent B.

[0004] The multifunctional intelligent drip dosing tool for oil wells involved in the above patent still has some obvious shortcomings in actual use. When the isolation plug in the device faces the suction force of the oil pump, it causes it to move up and down inside the drug storage tube, which makes it difficult to fix. Therefore, we need to propose a new isolation plug for the dosing tool. Utility Model Content

[0005] The utility model aims to provide a novel isolation plug for a medicine adding tool, which has a structure that allows the isolation plug to be fixed inside a medicine storage tube, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new isolation plug for a dosing tool, comprising a first sealing segment, a second sealing segment, a center rod, a telescopic spring, a slider and an anchor mechanism, one end of the center rod sequentially passes through the interior of the slider, the interior of the telescopic spring, the interior of the second sealing segment, the interior of the anchor mechanism and the interior of the first sealing segment, a fixing component for fixing the slider is arranged between one end of the center rod and one end of the slider, a sliding mechanism is arranged between one end of the center rod away from the slider and the first sealing segment, and the end of the center rod is connected to the inner cavity of the first sealing segment through the sliding mechanism.

[0007] Preferably, the anchor mechanism includes a connecting plate fixedly mounted on one end of the second sealing section, four groups of connecting rods are provided on one side of the connecting plate, two ends of the connecting rods are rotatably connected to two groups of connecting seats, and one ends of the four groups of connecting rods are distributed in a ring array on one side of the connecting plate through the four groups of connecting seats.

[0008] Preferably, the anchor mechanism also includes a fixing seat fixedly mounted on one end of the first sealing section, the surface of the fixing seat is obliquely provided with four groups of connecting grooves, the interior of the connecting grooves is adaptively provided with connecting blocks, the four groups of connecting blocks are correspondingly arranged with the four groups of connecting rods, and one end of the four groups of connecting rods is connected to the surface of the connecting block through the four groups of connecting seats.

[0009] Preferably, an annular groove is formed on the surface of the first sealing section and the second sealing section, and a sealing ring is adapted to be provided inside the annular groove, and the sealing ring is sleeved on the inner wall of the annular groove.

[0010] Preferably, the fixing assembly includes a fixing rod fixedly mounted on one end of the slider, the interior of the fixing rod is adapted to the center rod, and one end of the interior of the fixing rod is threadedly connected to one end of the surface of the center rod.

[0011] Preferably, the fixing assembly also includes a fixing block fixedly installed on one end of the fixing rod and a limiting block fixedly installed on one end of the surface of the center rod, a limiting groove is provided on the surface of the fixing block, the interior of the limiting groove is adapted to be matched with the limiting block, and the limiting block is slidably connected to the inner cavity of the limiting groove.

[0012] Preferably, the sliding mechanism includes a sliding cavity opened at one end of the first sealing section, the interior of the sliding cavity is adapted to be provided with a sliding plate, the surface of the sliding plate is slidingly connected to the interior of the sliding cavity, and the interior of the sliding plate is threadedly connected to one end of the center rod.

[0013] Preferably, a guide rod is fixedly connected to one end of the second sealing section and is located inside the telescopic spring, a guide groove is opened inside the slider, the guide rod is adapted to the inside of the guide groove, and the surface of the guide rod is slidably connected to the inner wall of the guide groove.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model can prevent the device from moving up and down inside the medicine storage tube through the coordinated use of the first sealing section, the second sealing section, the center rod, the telescopic spring, the sliding block, the anchor tooth mechanism and the sliding mechanism, thereby reducing the influence on the medicine adding effect, prolonging the service life of the sealing ring on the isolation plug, ensuring the isolation effect of the medicine of the downhole dripping medicine adding tool and the crude oil liquid in the wellbore, and increasing the practicability of the device.

[0016] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the utility model in a front view;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model when the medicine storage tube is placed;

[0020] Figure 4 It is a structural schematic diagram of the fixing assembly of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the anchor mechanism of the utility model.

[0022] In the figure: 1, first sealing section; 2, second sealing section; 3, center rod; 4, telescopic spring; 5, slider; 6, anchor mechanism; 601, connecting plate; 602, connecting rod; 603, connecting seat; 604, fixing seat; 605, connecting groove; 606, connecting block; 7, sliding mechanism; 701, sliding cavity; 702, sliding plate; 8, guide rod; 9, annular groove; 10, sealing ring; 11, fixing rod; 12, fixing block; 13, limit block; 14, limit groove; 15, guide groove. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1-5The utility model provides a technical solution: a new isolation plug for a dosing tool, comprising a first sealing section 1, a second sealing section 2, a center rod 3, a telescopic spring 4, a slider 5, an anchor mechanism 6, a fixing assembly and a sliding mechanism 7.

[0025] Preferably, one end of the center rod 3 passes through the interior of the slider 5, the interior of the telescopic spring 4, the interior of the second sealing segment 2, the interior of the anchor mechanism 6 and the interior of the first sealing segment 1 in sequence, and a fixing component for fixing the slider 5 is provided between one end of the center rod 3 and one end of the slider 5, a sliding mechanism 7 is provided between the end of the center rod 3 away from the slider 5 and the first sealing segment 1, and the end of the center rod 3 is connected to the inner cavity of the first sealing segment 1 through the sliding mechanism 7, and the surface of the center rod 3 is provided with a slope end, such as Figure 3 and Figure 4 As shown, the central rod 3 can facilitate pushing the anchor mechanism 6.

[0026] Specifically, through the coordinated use of the first sealing section 1, the second sealing section 2, the center rod 3, the telescopic spring 4, the slider 5, the anchor mechanism 6 and the sliding mechanism 7, after the medicine storage tube is filled with medicine, the first sealing section 1 is adjusted to the upward direction, and then the device is placed in the medicine storage tube. In daily work, as the medicine decreases, the device gradually moves downward. When the screen tube is blocked, the negative pressure between the medicine storage tube and the oil pump increases, and the sliding mechanism 7 inside the first sealing section 1 is forced to move with the center rod 3. The anchor mechanism 6 is moved upward by using the slope end provided on the surface of the center rod 3. When the suction force disappears, the center rod 3 moves downward under the action of the telescopic spring 4, so that the slope end of the center rod 3 withdraws from the anchor tooth mechanism 6, and the anchor tooth mechanism 6 is retracted to the same inner diameter as the main body, thereby avoiding the device from moving up and down inside the drug storage tube, reducing the influence on the dosing effect, and prolonging the service life of the sealing ring 10 on the isolation plug, ensuring the isolation effect of the medicine of the downhole drip dosing tool and the crude oil liquid in the wellbore, and increasing the practicality of the device.

[0027] Preferably, the anchor mechanism 6 includes: a connecting plate 601, a connecting rod 602, a connecting seat 603, a fixing seat 604, a connecting groove 605 and a connecting block 606. The connecting plate 601 is fixedly installed at one end of the second sealing section 2. Four groups of connecting rods 602 are arranged on one side of the connecting plate 601. Two ends of the connecting rods 602 are rotatably connected with two groups of connecting seats 603, and one end of the four groups of connecting rods 602 are distributed in a ring array on one side of the connecting plate 601 through four groups of connecting seats 603. The fixing seat 604 is fixedly installed at one end of the first sealing section 1. Four groups of connecting grooves 605 are obliquely opened on the surface of the fixing seat 604. The interior of the connecting groove 605 is adapted to be provided with a connecting block 606. The four groups of connecting blocks 606 are arranged corresponding to the four groups of connecting rods 602, and one end of the four groups of connecting rods 602 is connected to the surface of the connecting block 606 through four groups of connecting seats 603.

[0028] Specifically, by using the connecting plate 601, the connecting rod 602, the connecting seat 603, the fixing seat 604, the connecting groove 605 and the connecting block 606 in coordination, when the anchoring mechanism 6 is squeezed, the connecting block 606 in the anchoring mechanism 6 and the inner wall of the medicine storage tube can generate a squeezing force to prevent the device from moving. When the squeezing of the anchoring mechanism 6 is removed, the connecting block 606 in the anchoring mechanism 6 slides into the interior of the connecting groove 605 to restore the diameter of the device to its original state.

[0029] Preferably, the surfaces of the first sealing section 1 and the second sealing section 2 are both provided with an annular groove 9, and a sealing ring 10 is adapted to be arranged inside the annular groove 9. The sealing ring 10 is sleeved on the inner wall of the annular groove 9 to play a role of sealing and isolation.

[0030] Preferably, the fixing assembly includes: a fixing rod 11, a fixing block 12, a limiting block 13 and a limiting groove 14, the fixing rod 11 is fixedly installed at one end of the slider 5, the interior of the fixing rod 11 is adapted to the center rod 3, and one end of the interior of the fixing rod 11 is threadedly connected to one end of the surface of the center rod 3, the fixing block 12 is fixedly installed at one end of the fixing rod 11, the limiting block 13 is fixedly installed at one end of the surface of the center rod 3, a limiting groove 14 is provided on the surface of the fixing block 12, the interior of the limiting groove 14 is adapted to the limiting block 13, and the limiting block 13 is slidably connected to the inner cavity of the limiting groove 14.

[0031] Specifically, by using the fixed rod 11, the fixed block 12, the limit block 13 and the limit groove 14 in coordination, the center rod 3 and the slider 5 can be fixedly connected. When the center rod 3 moves, it is convenient to control the slider 5 to squeeze the telescopic spring 4, so that the telescopic spring 4 generates a force on the anchor tooth mechanism 6 by pushing the second sealing section 2.

[0032] Preferably, the sliding mechanism 7 includes: a sliding cavity 701 and a sliding plate 702. The sliding cavity 701 is opened at one end inside the first sealing section 1. The sliding plate 702 is adapted to be arranged inside the sliding cavity 701. The surface of the sliding plate 702 is slidingly connected to the inside of the sliding cavity 701. The inside of the sliding plate 702 is threadedly connected to one end of the center rod 3, so as to connect the first sealing section 1 and the center rod 3 to prevent the first sealing section 1 from falling off from one end of the center rod 3.

[0033] Preferably, a guide rod 8 is fixedly connected to one end of the second sealing section 2 and located inside the telescopic spring 4, and a guide groove 15 is opened inside the slider 5. The guide rod 8 and the inside of the guide groove 15 are adapted to each other, and the surface of the guide rod 8 is slidably connected to the inner wall of the guide groove 15, which can limit and guide the telescopic spring 4. When the slider 5 squeezes the telescopic spring 4, deviation of the telescopic spring 4 is avoided during the movement.

[0034] 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. A new type of isolation plug for a dosing tool, characterized in that: include: A first sealing section (1), a second sealing section (2), a central rod (3), a telescopic spring (4), a slider (5) and an anchor mechanism (6), wherein: One end of the central rod (3) passes through the interior of the slider (5), the interior of the telescopic spring (4), the interior of the second sealing section (2), the interior of the anchor mechanism (6) and the interior of the first sealing section (1) in sequence; A fixing component for fixing the slider (5) is provided between one end of the central rod (3) and one end of the slider (5); A sliding mechanism (7) is provided between the end of the center rod (3) away from the slider (5) and the first sealing section (1), and the end of the center rod (3) is connected to the inner cavity of the first sealing section (1) through the sliding mechanism (7).

2. A novel isolation plug for a dosing tool according to claim 1, characterized in that: The anchor mechanism (6) comprises a connecting plate (601) fixedly mounted on one end of the second sealing section (2); four groups of connecting rods (602) are arranged on one side of the connecting plate (601); two ends of the connecting rods (602) are rotatably connected to two groups of connecting seats (603); and one end of the four groups of connecting rods (602) are distributed on one side of the connecting plate (601) in a ring array through the four groups of connecting seats (603).

3. A novel isolation plug for a dosing tool according to claim 2, characterized in that: The anchor mechanism (6) further comprises a fixing seat (604) fixedly mounted on one end of the first sealing section (1); the surface of the fixing seat (604) is obliquely provided with four groups of connecting grooves (605); the interior of the connecting grooves (605) is adapted to be provided with connecting blocks (606); the four groups of connecting blocks (606) are arranged correspondingly to the four groups of connecting rods (602); and one end of the four groups of connecting rods (602) is connected to the surface of the connecting blocks (606) through the four groups of connecting seats (603).

4. The novel isolation plug for a dosing tool according to claim 1 is characterized in that: The surfaces of the first sealing section (1) and the second sealing section (2) are both provided with an annular groove (9), the interior of the annular groove (9) is fitted with a sealing ring (10), and the sealing ring (10) is sleeved on the inner wall of the annular groove (9).

5. The novel isolation plug for a dosing tool according to claim 1 is characterized in that: The fixing assembly comprises a fixing rod (11) fixedly mounted on one end of the sliding block (5); the interior of the fixing rod (11) is adapted to the center rod (3); and one end of the interior of the fixing rod (11) is threadedly connected to one end of the surface of the center rod (3).

6. A novel isolation plug for a dosing tool according to claim 5, characterized in that: The fixing assembly further comprises a fixing block (12) fixedly mounted on one end of the fixing rod (11) and a limiting block (13) fixedly mounted on one end of the surface of the center rod (3); a limiting groove (14) is provided on the surface of the fixing block (12); the interior of the limiting groove (14) is adapted to be matched with the limiting block (13), and the limiting block (13) is slidably connected to the inner cavity of the limiting groove (14).

7. The novel isolation plug for a dosing tool according to claim 1 is characterized in that: The sliding mechanism (7) comprises a sliding cavity (701) opened at one end inside the first sealing section (1), the interior of the sliding cavity (701) is adapted to be provided with a sliding plate (702), the surface of the sliding plate (702) is slidably connected to the interior of the sliding cavity (701), and the interior of the sliding plate (702) is threadedly connected to one end of the center rod (3).

8. The novel isolation plug for a dosing tool according to claim 1 is characterized in that: A guide rod (8) is fixedly connected to one end of the second sealing section (2) and is located inside the telescopic spring (4); a guide groove (15) is provided inside the sliding block (5); the guide rod (8) is adapted to the inside of the guide groove (15), and the surface of the guide rod (8) is slidably connected to the inner wall of the guide groove (15).

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