Underground negative pressure swabbing vortex drainage device

Abstract

The utility model relates to the related technical field of oil extraction devices, in particular to an underground negative pressure swabbing vortex drainage device which comprises a liquid inlet hole shell, a clamping wall liquid flow cavity outer layer, a clamping wall liquid flow cavity inner layer, an alloy nozzle, a throat pipe, a vortex liquid inlet piece and a vortex generation channel. An oil sleeve ring liquid inlet hole is formed in the side wall of the lower end of the liquid inlet hole shell; the underground negative pressure swabbing vortex drainage device is formed by combining a liquid inlet hole shell, a clamping wall liquid flow cavity outer layer, a clamping wall liquid flow cavity inner layer, an alloy nozzle, a throat pipe, a vortex liquid inlet piece and a vortex generation channel, so that liquid enters the liquid inlet hole shell through an oil sleeve ring liquid inlet hole; and then the oil pipe liquid enters the low-pressure cavity through the alloy nozzle and carries the oil pipe liquid of the clamping wall liquid flow cavity to be sprayed out upwards through the throat pipe, the oil pipe liquid flows back to a ground container through the upper vortex liquid inlet piece, and multiple stages of vortex generators can be added according to the well depth to achieve the optimal flow-back effect.

Description

Technical Field

[0001] The utility model relates to the technical field related to oil production devices, in particular to an underground negative pressure pumping vortex drainage device. Background Art

[0002] Oil production engineering is the general term for various engineering and technical measures taken on oil reservoirs through production wells and injection wells according to development goals during oil field exploitation. In oil production engineering, jet devices are needed to treat oil layers.

[0003] The existing downhole negative pressure jet tools have the following disadvantages: 1. The existing negative pressure jet tools can be operated in shallow wells, but the negative pressure return effect is not ideal for deep wells. 2. The existing negative pressure return technology mostly uses nitrogen equipment and foaming agents to produce negative pressure return. The nitrogen equipment causes high production costs, and the addition of foaming agents and other agents will cause certain pollution and damage to the oil and water layers. Therefore, the utility model proposes a downhole negative pressure pumping vortex drainage device to solve the above problems. Utility Model Content

[0004] The utility model aims to provide an underground negative pressure pumping vortex drainage device to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: an underground negative pressure pumping vortex drainage device, the underground negative pressure pumping vortex drainage device comprising:

[0006] The liquid inlet hole shell is in a round tube structure, and an oil sleeve ring liquid inlet hole is provided on the lower end side wall of the liquid inlet hole shell, and the upper end of the liquid inlet hole shell is connected to an upper joint;

[0007] The outer layer of the sandwich wall liquid flow chamber is fixedly mounted on the inner side wall of the lower side end of the liquid inlet hole shell, and a primary through hole is opened on the side wall of the sandwich wall liquid flow chamber outer layer;

[0008] The inner layer of the sandwich wall liquid flow chamber, the outer layer of the sandwich wall liquid flow chamber is arranged in the inner cavity of the outer layer of the sandwich wall liquid flow chamber, the side wall of the inner layer of the sandwich wall liquid flow chamber is provided with a secondary through hole, and a sandwich wall liquid flow chamber is formed between the outer wall of the inner layer of the sandwich wall liquid flow chamber and the inner wall of the outer layer of the sandwich wall liquid flow chamber;

[0009] An alloy nozzle, the alloy nozzle is fixedly mounted on the upper side end of the inner layer of the sandwich wall liquid flow chamber;

[0010] A throat pipe, the throat pipe being fixedly mounted on the inner cavity side wall in the middle of the liquid inlet housing;

[0011] A vortex liquid inlet component, which is fixedly mounted on the inner cavity side wall of the liquid inlet hole housing near the upper end, and a vortex liquid inlet cavity is provided at the lower side end of the vortex liquid inlet component;

[0012] The vortex generating channel is arranged on the outer side wall of the vortex liquid inlet part close to the upper end.

[0013] Preferably, the upper and lower ends of the inner layer of the sandwich wall liquid flow cavity are connected to the inner side wall of the outer layer of the sandwich wall liquid flow cavity through an upper connecting plate and a lower connecting plate respectively, and the lower connecting plate is provided with three-level through holes, and the upper connecting plate is provided with four-level through holes.

[0014] Preferably, the primary through holes and the secondary through holes are arranged correspondingly.

[0015] Preferably, the side wall of the upper end of the inner layer of the sandwich wall liquid flow chamber expands outward to form a corrugated structure protruding outward, and a gap is left between the upper end of the inner layer of the sandwich wall liquid flow chamber and the throat to form a low-pressure chamber.

[0016] Preferably, the vortex liquid inlet component is arranged in a rocket-like manner, and the vortex liquid inlet cavity is communicated with the inner cavity of the liquid inlet hole shell.

[0017] Preferably, the vortex generating channel is spirally arranged on the upper outer side wall of the vortex liquid inlet component.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. By setting up a downhole negative pressure pumping vortex drainage device composed of a liquid inlet shell, an outer layer of a sandwich wall liquid flow cavity, an inner layer of a sandwich wall liquid flow cavity, an alloy nozzle, a throat, a vortex liquid inlet component and a vortex generating channel, the liquid flows into the liquid inlet shell through the oil casing ring liquid inlet hole, and then enters the low-pressure cavity through the alloy nozzle. The oil pipe liquid carrying the sandwich wall liquid flow cavity is sprayed upward through the throat, and is returned to the ground container through the upper vortex liquid inlet component. In addition, multi-stage vortex generators can be added according to the well depth to achieve the best return effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is a cross-sectional view of the liquid inlet housing of the utility model;

[0022] Figure 3 This is a cross-sectional view of the upper joint of the utility model;

[0023] Figure 4 This is a cross-sectional view of the vortex liquid inlet component of the utility model;

[0024] Figure 5 This is a cross-sectional view of the throat of the utility model;

[0025] Figure 6 This is a position view of the alloy nozzle of the utility model;

[0026] Figure 7 This is a schematic diagram of the liquid flow of the utility model;

[0027] Figure 8 for Figure 7 A schematic diagram of the structure enlargement in the middle;

[0028] Fig. 9 for Figure 7 A magnified schematic diagram of the structure at B in the middle;

[0029] Fig.10 for Figure 7 Enlarged schematic diagram of the structure at point C in the middle.

[0030] In the figure: liquid inlet hole shell 1, sandwich wall liquid flow cavity outer layer 2, sandwich wall liquid flow cavity inner layer 3, alloy nozzle 4, throat 5, vortex liquid inlet part 6, vortex generating channel 7, upper joint 8, lower connecting plate 9, oil sleeve ring liquid inlet hole 10, primary through hole 11, secondary through hole 12, upper connecting plate 13, vortex liquid inlet cavity 14. DETAILED DESCRIPTION

[0031] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit 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.

[0032] See also Figure 1-10 The present invention provides the following three preferred embodiments:

[0033] Embodiment 1

[0034] A downhole negative pressure pumping vortex drainage device, the downhole negative pressure pumping vortex drainage device comprises a liquid inlet shell 1, a sandwich wall liquid flow chamber outer layer 2, a sandwich wall liquid flow chamber inner layer 3, an alloy nozzle 4, a throat 5, a vortex liquid inlet part 6 and a vortex generating channel 7, the liquid inlet shell 1 is a circular tube structure, and an oil sleeve ring liquid inlet hole 10 is opened on the lower end side wall of the liquid inlet shell 1, an upper joint 8 is connected to the upper end of the liquid inlet shell 1, the sandwich wall liquid flow chamber outer layer 2 is fixedly installed on the inner side wall of the lower side end of the liquid inlet shell 1, and a primary through hole 11 is opened on the side wall of the sandwich wall liquid flow chamber outer layer 2, the sandwich wall liquid flow chamber outer layer 2 is arranged in the inner cavity of the sandwich wall liquid flow chamber outer layer 2, a secondary through hole 12 is opened on the side wall of the sandwich wall liquid flow chamber inner layer 3, and a sandwich wall liquid flow chamber is formed between the outer side wall of the sandwich wall liquid flow chamber inner layer 3 and the inner side wall of the sandwich wall liquid flow chamber outer layer 2, the alloy nozzle 4 is fixedly installed on the sandwich wall At the upper side end of the inner layer 3 of the liquid flow chamber, the throat 5 is fixedly installed on the inner cavity side wall in the middle of the liquid inlet hole shell 1, the vortex liquid inlet component 6 is fixedly installed on the inner cavity side wall near the upper end of the liquid inlet hole shell 1, and the lower side end of the vortex liquid inlet component 6 is provided with a vortex liquid inlet chamber 14, and the vortex generating channel 7 is arranged on the outer side wall near the upper end of the vortex liquid inlet component 6. By setting a downhole negative pressure pumping vortex drainage device composed of the liquid inlet hole shell 1, the outer layer 2 of the sandwich wall liquid flow chamber, the inner layer 3 of the sandwich wall liquid flow chamber, the alloy nozzle 4, the throat 5, the vortex liquid inlet component 6 and the vortex generating channel 7, the liquid flows into the liquid inlet hole shell 1 through the oil sleeve ring liquid inlet hole 10, and then enters the low-pressure chamber through the alloy nozzle 4 to carry the oil pipe liquid in the sandwich wall liquid flow chamber. The fluid is sprayed upward through the throat 5 and returned to the ground container through the upper vortex liquid inlet component 6, and a multi-stage vortex generator can be added according to the well depth to achieve the best return effect.

[0035] Embodiment 2

[0036] On the basis of Example 1, the upper and lower ends of the inner layer 3 of the sandwich wall liquid flow chamber are respectively connected to the inner wall of the outer layer 2 of the sandwich wall liquid flow chamber through the upper connecting plate 13 and the lower connecting plate 9, and the lower connecting plate 9 is provided with a three-level through hole, and the upper connecting plate 13 is provided with a four-level through hole, and the first-level through hole 11 and the second-level through hole 12 are arranged correspondingly, and the upper side end side wall of the inner layer 3 of the sandwich wall liquid flow chamber expands outward to form a corrugated structure protruding outward, and a gap is left between the upper side end of the inner layer 3 of the sandwich wall liquid flow chamber and the throat 5 to form a low-pressure chamber, and the upper side end side wall of the inner layer 3 of the sandwich wall liquid flow chamber is expanded outward to form a corrugated structure protruding outward, thereby increasing the pressure difference between the low-pressure chamber and other positions.

[0037] Embodiment 3

[0038] On the basis of the second embodiment, the vortex liquid inlet component 6 is arranged in a rocket-like manner, and the vortex liquid inlet cavity 14 is connected to the inner cavity of the liquid inlet hole shell 1, and the vortex generating channel 7 is spirally arranged on the upper end outer wall of the vortex liquid inlet component 6. By means of the vortex liquid inlet component 6 arranged in a rocket-like manner and the vortex generating channel 7 being arranged at the upper end of the vortex liquid inlet component 6, the formation state of the vortex is improved.

[0039] Although the above describes the illustrative specific implementation methods of the present application so that technicians in this technical field can understand the present application, the present application is not limited to the scope of the specific implementation methods. For ordinary technicians in this technical field, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations using the concept of the present application are protected.

Claims

1. An underground negative pressure pumping vortex drainage device, characterized in that: The underground negative pressure pumping vortex drainage device comprises: A liquid inlet housing (1), the liquid inlet housing (1) being in a circular tube structure, and an oil sleeve ring liquid inlet hole (10) being provided on a side wall at a lower end of the liquid inlet housing (1), and an upper joint (8) being connected to an upper end of the liquid inlet housing (1); The outer layer (2) of the sandwich wall liquid flow chamber is fixedly mounted on the inner side wall of the lower side end of the liquid inlet hole housing (1), and a primary through hole (11) is opened on the side wall of the outer layer (2) of the sandwich wall liquid flow chamber; A sandwich liquid flow chamber inner layer (3), wherein the sandwich liquid flow chamber outer layer (2) is arranged in the inner cavity of the sandwich liquid flow chamber outer layer (2), a secondary through hole (12) is opened on the side wall of the sandwich liquid flow chamber inner layer (3), and a sandwich liquid flow chamber is formed between the outer wall of the sandwich liquid flow chamber inner layer (3) and the inner wall of the sandwich liquid flow chamber outer layer (2); An alloy nozzle (4), wherein the alloy nozzle (4) is fixedly mounted on the upper side end of the inner layer (3) of the sandwich wall liquid flow chamber; A throat pipe (5), wherein the throat pipe (5) is fixedly mounted on a side wall of an inner cavity in the middle of the liquid inlet housing (1); A vortex liquid inlet component (6), the vortex liquid inlet component (6) is fixedly mounted on the inner cavity side wall of the liquid inlet hole housing (1) near the upper end, and a vortex liquid inlet cavity (14) is provided at the lower side end of the vortex liquid inlet component (6); A vortex generating channel (7) is arranged on the outer side wall of the vortex liquid inlet part (6) close to the upper end.

2. The underground negative pressure pumping vortex drainage device according to claim 1, characterized in that: The upper and lower ends of the inner layer (3) of the sandwich wall liquid flow chamber are connected to the inner side wall of the outer layer (2) of the sandwich wall liquid flow chamber through an upper connecting plate (13) and a lower connecting plate (9), respectively, and the lower connecting plate (9) is provided with three-level through holes, and the upper connecting plate (13) is provided with four-level through holes.

3. The underground negative pressure pumping vortex drainage device according to claim 1, characterized in that: The primary through holes (11) and the secondary through holes (12) are arranged correspondingly.

4. The underground negative pressure pumping vortex drainage device according to claim 1, characterized in that: The side wall of the upper end of the inner layer (3) of the sandwich wall liquid flow chamber expands outward to form a corrugated structure protruding outward, and a gap is left between the upper end of the inner layer (3) of the sandwich wall liquid flow chamber and the throat (5) to form a low-pressure chamber.

5. The underground negative pressure pumping vortex drainage device according to claim 1, characterized in that: The vortex liquid inlet component (6) is arranged in a rocket-like manner, and the vortex liquid inlet cavity (14) is communicated with the inner cavity of the liquid inlet hole housing (1).

6. The underground negative pressure pumping vortex drainage device according to claim 5, characterized in that: The vortex generating channel (7) is arranged in a spiral shape on the outer side wall of the upper end of the vortex liquid inlet component (6).

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