Flow dividing device for oil field blockage removal

Abstract

The utility model discloses a flow dividing device for oil field plug removal, and relates to the technical field of flow dividing devices. The device comprises a main body, an output pipe is fixedly arranged at the top of the main body, an annular air bag is sleeved on the outer wall of the main body, an inflation hose is fixedly arranged at the top of the annular air bag, and a filter part is screwed on the main body below the annular air bag through threads. Gas is inflated into the annular air bag, so that the annular air bag is effectively attached to the inner wall of an oil well, the main body can be fixed to the inner wall of the oil well, blocking remover cannot be quickly ejected out by high-pressure oil gas, and after the gas in the annular air bag is released, the blocking remover can be quickly ejected out. A worker can conveniently put the main body down to a proper height position in an oil well and can conveniently and rapidly take the main body out of the oil well, the annular air bag can slide down from the main body by screwing off the filtering piece from the lower end of the main body, the worker can conveniently replace the damaged annular air bag, and operation is convenient and fast.

Description

Technical Field

[0001] The utility model belongs to the technical field of flow diversion devices, in particular to a flow diversion device for unblocking oil fields. Background Art

[0002] In the process of oilfield exploitation, oil wells are often blocked by mud. In order to restore the permeability of the mud, a plugging remover is often used for acidification, thereby inhibiting the corrosion of the rock and soil part in the mud, forcing the mud to crack and leak out oil and gas. When injecting the plugging remover into the oil well, a diversion device is often used for injection. The main reason is that since there is still high-pressure oil and gas extending upward on the upper side of the blocked position, when the plugging remover is directly injected into the oil well, the oil will be carried out by the high-pressure oil and gas. After searching, the patent with application number 202320506314.3 discloses a diversion device for oilfield unblocking, including a main body, the top of the main body is screwed with a first filter layer, a plurality of rubber bowls are arranged on the main body, the other end of the main body is connected to an output pipe through a flange, the other end of the output pipe is fixedly connected to the first pipe and the second pipe, the first pipe and the second pipe are both provided with filter components, and an input pipe is fixedly installed inside the main body.

[0003] However, in actual use, the applicant found that by arranging a rubber bowl on the outer wall of the main body and making the rubber bowl fit against the inner wall of the oil well to achieve limited fixation of the main body position, it is possible to prevent the deblocking agent from being quickly pushed out by the high-pressure oil and gas. Since the rubber bowl is always in contact with the inner wall of the oil well, it will generate greater resistance when the main body enters the oil well and is taken out of the oil well, making it inconvenient for personnel to lower the main body to a suitable height position inside the oil well. In view of this, we propose a diversion device for oil field deblocking. Utility Model Content

[0004] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0005] The utility model discloses a flow diversion device for unblocking oil fields, comprising a main body, an output pipe is fixedly arranged on the top of the main body, an annular airbag is sleeved on the outer wall of the main body, an inflation hose is fixedly arranged on the top of the annular airbag, a filter is threadedly screwed on the main body below the annular airbag, the filter comprises a coarse filter plate, a connecting rod, a fine filter plate and a connecting ring, the coarse filter plate is fixedly connected to the fine filter plate by a plurality of connecting rods, the connecting ring is fixedly connected to the peripheral side wall of the coarse filter plate, the connecting ring is threadedly screwed on the outer wall of the lower end of the main body, an input pipe is fixedly penetrated and fixed on the top of the main body, the lower end of the input pipe sequentially penetrates the middle parts of the fine filter plate and the coarse filter plate, and the input pipe is fixedly connected to the fine filter plate and the coarse filter plate.

[0006] Preferably, a limiting ring is fixedly provided on the outer wall of the main body, and a sleeve ring is fixedly connected to the inner wall of the annular airbag.

[0007] Preferably, the sleeve ring is movably sleeved on the outer wall of the output pipe, and the upper end of the sleeve ring abuts against the limiting ring.

[0008] Preferably, the lower end of the sleeve ring abuts against the connecting ring.

[0009] Preferably, an external thread is provided on the outer wall of the lower end of the main body, and an internal thread is provided on the inner wall of the connecting ring, and the internal thread matches the external thread.

[0010] Preferably, anti-slip teeth are evenly arranged on the outer wall of the connecting ring.

[0011] The utility model has the following beneficial effects:

[0012] The utility model discloses a flow diversion device for unblocking oil fields. Gas is filled into an annular airbag so that the annular airbag is effectively fitted with the inner wall of the oil well, and a main body can be fixed on the inner wall of the oil well, so that an unblocking agent will not be quickly pushed out by the high-pressure oil and gas. After the gas inside the annular airbag is released, it is convenient for personnel to lower the main body to a suitable height position in the oil well, and it is convenient for personnel to quickly take the main body out of the oil well. The annular airbag can be slid off the main body by unscrewing a filter from the lower end of the main body, so that personnel can replace a damaged annular airbag conveniently, and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 This is a schematic diagram of the overall structure of a flow diversion device for oilfield blockage relief according to the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of a diversion device for oilfield unblocking after the annular airbag and the filter element are removed;

[0016] Figure 3 This is a structural schematic diagram of a filter element in a diversion device for unblocking oil fields according to the utility model;

[0017] Figure 4 The utility model is a schematic structural diagram of an annular air bag in a diversion device for oil field blockage relief.

[0018] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0019] 1. Main body; 11. Output pipe; 12. Limiting ring; 2. Annular airbag; 21. Inflating hose; 22. Sleeve ring; 3. Filter element; 31. Coarse filter plate; 32. Connecting rod; 33. Fine filter plate; 34. Connecting ring; 341. Anti-slip teeth; 4. Input pipe. DETAILED DESCRIPTION

[0020] 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 of 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.

[0021] See also Figure 1-4 As shown, the utility model provides a technical solution:

[0022] Embodiment 1: A diversion device for unblocking oil fields, comprising a main body 1, an output pipe 11 is fixedly arranged on the top of the main body 1, the output pipe 11 is connected to an external oil and gas transmission pipeline, an annular airbag 2 is sleeved on the outer wall of the main body 1, an inflatable hose 21 is fixedly arranged on the top of the annular airbag 2, the upper end of the inflatable hose 21 is connected to an external inflating device, and is used to fill gas into the interior of a connecting ring 34, by filling gas into the interior of the annular airbag 2, the annular airbag 2 is effectively fitted with the inner wall of the oil well, and the main body 1 can be fixed on the inner wall of the oil well, so that the unblocking agent will not be quickly pushed out by the high-pressure oil and gas, and the gas inside the annular airbag 2 is released. After that, it is convenient for personnel to place the main body 1 into the oil well and to quickly take the main body 1 out of the oil well. The main body 1 below the annular airbag 2 is threadedly screwed with a filter 3, and the filter 3 includes a coarse filter plate 31, a connecting rod 32, a fine filter plate 33 and a connecting ring 34. The coarse filter plate 31 and the fine filter plate 33 are fixedly connected by a plurality of connecting rods 32. The connecting ring 34 is fixedly connected to the peripheral side wall of the coarse filter plate 31. The connecting ring 34 is threadedly screwed on the outer wall of the lower end of the main body 1. An external thread is provided on the outer wall of the lower end of the main body 1, and an internal thread is provided on the inner side wall of the connecting ring 34. The internal thread cooperates with the external thread. Anti-slip teeth 341 are evenly arranged on the outer wall, and an input pipe 4 is fixedly passed through the top of the main body 1. The upper end of the input pipe 4 is connected to an external storage box for storing the plugging remover, and the lower end of the input pipe 4 passes through the middle of the fine filter plate 33 and the coarse filter plate 31 in sequence, and the input pipe 4 is fixedly connected to the fine filter plate 33 and the coarse filter plate 31. When in use, when the main body 1 is placed in the oil well, the annular airbag 2 is in a deflated state. After the main body 1 is placed at a suitable position inside the oil well, the external inflation device can fill the annular airbag 2 with gas through the inflation hose 21 to inflate the annular airbag 2, and the inflated annular airbag 2 can effectively fit the inner wall of the oil well. The main body 1 is fixed at a suitable position inside the oil well, and a deblocking agent can be introduced into the oil well through the input pipe 4 to deblock the rock and soil part in the mud inside the oil well. When the impurities generated in the deblocking process move to the coarse filter plate 31 and the fine filter plate 33 together with the oil and gas, the coarse filter plate 31 and the fine filter plate 33 can filter the large particles and small particles in the oil and gas respectively to prevent the impurities from adhering to the inner wall of the output pipe 11 and the oil and gas transmission pipeline. After a period of time, the annular airbag 2 can be deflated, and the main body 1 can be taken out of the oil well, and then the filter element 3 can be screwed off from the lower end of the main body 1 to clean the impurities on the filter element 3.

[0023] Embodiment 2: The difference between this embodiment and embodiment 1 lies in that, a limiting ring 12 is fixedly provided on the outer wall of the main body 1, and a sleeve ring 22 is fixedly connected to the inner wall of the annular airbag 2. The sleeve ring 22 is movably sleeved on the outer wall of the output pipe 11, and the upper end of the sleeve ring 22 abuts on the limiting ring 12, and the lower end of the sleeve ring 22 abuts on the connecting ring 34. By unscrewing the filter 3 from the lower end of the main body 1, the annular airbag 2 can be slid off from the main body 1, which can facilitate personnel to replace the damaged annular airbag 2. After a period of use, when the annular airbag 2 is damaged due to aging and wear and needs to be replaced, the filter 3 can be unscrewed from the lower end of the main body 1, and the annular airbag 2 can be directly slid out and removed from the main body 1, and then a new annular airbag 2 can be sleeved on the main body 1, and the filter 3 is screwed on the lower end of the main body 1 again. The annular airbag 2 can be quickly replaced by pressing the annular airbag 2 against the connecting ring 34 and the limiting ring 12.

[0024] Working principle: When in use, when the main body 1 is placed in the oil well, the annular airbag 2 is in a deflated state. After the main body 1 is placed at a suitable position inside the oil well, the external inflation device can fill the annular airbag 2 with gas through the inflation hose 21, so that the annular airbag 2 is inflated and expanded. The inflated annular airbag 2 can effectively fit with the inner wall of the oil well, and the main body 1 is fixed at a suitable position inside the oil well. The plugging remover can be introduced into the oil well through the input pipe 4 to perform corrosion inhibition and plugging removal on the rock and soil part in the mud inside the oil well. When the impurities generated during the plugging removal process move to the coarse filter plate 31 and the fine filter plate 33 together with the oil and gas, the large particle impurities and small particles in the oil and gas can be filtered out by the coarse filter plate 31 and the fine filter plate 33 respectively. The particle impurities are filtered to prevent the impurities from adhering to the inner wall of the output pipe 11 and the oil and gas transmission pipeline. After a period of time, the main body 1 can be taken out from the oil well after the annular airbag 2 is deflated, and then the filter element 3 is unscrewed from the lower end of the main body 1 to clean the impurities on the filter element 3. After a period of use, when the annular airbag 2 is damaged due to aging and wear and needs to be replaced, the filter element 3 can be unscrewed from the lower end of the main body 1, and the annular airbag 2 can be directly slid out and removed from the main body 1, and then a new annular airbag 2 can be sleeved on the main body 1, and the filter element 3 can be screwed on the lower end of the main body 1 again. The annular airbag 2 can be quickly replaced by pressing the annular airbag 2 tightly through the connecting ring 34 and the limiting ring 12.

[0025] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0026] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions described in the aforementioned embodiments and any equivalent replacement of some of the technical features therein are within the protection scope of the present invention.

Claims

1. A flow diversion device for oilfield unblocking, comprising a main body (1), characterized in that: An output pipe (11) is fixedly arranged on the top of the main body (1), an annular airbag (2) is sleeved on the outer wall of the main body (1), an inflation hose (21) is fixedly arranged on the top of the annular airbag (2), a filter element (3) is threadedly screwed on the main body (1) below the annular airbag (2), the filter element (3) comprises a coarse filter plate (31), a connecting rod (32), a fine filter plate (33) and a connecting ring (34), the coarse filter plate (31) and the fine filter plate (33) are connected to each other. 3) are fixedly connected by a plurality of connecting rods (32), the connecting ring (34) is fixedly connected to the peripheral side wall of the coarse filter plate (31), the connecting ring (34) is screwed on the outer wall of the lower end of the main body (1), an input pipe (4) is fixedly penetrated through the top of the main body (1), the lower end of the input pipe (4) penetrates the middle part of the fine filter plate (33) and the coarse filter plate (31) in sequence, and the input pipe (4) is fixedly connected to the fine filter plate (33) and the coarse filter plate (31).

2. A flow diversion device for oilfield unblocking according to claim 1, characterized in that: A limiting ring (12) is fixedly arranged on the outer wall of the main body (1), and a sleeve ring (22) is fixedly connected to the inner wall of the annular airbag (2).

3. A flow diversion device for oilfield unblocking according to claim 2, characterized in that: The sleeve ring (22) is movably sleeved on the outer wall of the output pipe (11), and the upper end of the sleeve ring (22) abuts against the limiting ring (12).

4. A flow diversion device for oilfield unblocking according to claim 3, characterized in that: The lower end of the sleeve ring (22) abuts against the connecting ring (34).

5. The flow diversion device for oilfield unblocking according to claim 1, characterized in that: An external thread is provided on the outer wall of the lower end of the main body (1), and an internal thread is provided on the inner wall of the connecting ring (34), and the internal thread matches the external thread.

6. The flow diversion device for oilfield unblocking according to claim 1, characterized in that: Anti-slip teeth (341) are evenly arranged on the outer wall of the connecting ring (34).

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