Tubular anti-scale and anti-wax oil well pump

Abstract

The utility model relates to the technical field of oil exploitation, in particular to a tubular anti-scale and anti-wax oil well pump which comprises a pump cylinder coupling, a pump cylinder, an anti-scale and anti-wax alloy plunger assembly, an anti-scale and anti-wax alloy standing valve assembly, an oil pipe coupling and an anti-scale and anti-wax alloy device. The pump cylinder coupling is in threaded connection with the upper end of the pump cylinder; an anti-scale and anti-wax alloy plunger assembly is arranged in the pump cylinder; the anti-scale and anti-wax alloy standing valve assembly is mounted at the lower end of the pump cylinder; and the tubing coupling is respectively connected with the lower end of the anti-scale and anti-wax alloy standing valve assembly and the anti-scale and anti-wax alloy device. Due to the design of the anti-scale and anti-wax alloy assembly, the contact area between the anti-scale and anti-wax alloy and oil liquid is increased, the oil liquid and the anti-scale and anti-wax alloy can make more sufficient contact and catalysis, formation of new scales can be prevented, and dissolution of old scales is promoted. The wax crystal form is changed by utilizing the conductivity and the surface catalytic characteristic of the anti-scale and anti-wax alloy, so that the freezing point is greatly reduced, and the anti-wax effect in the lifting process is achieved.

Description

Technical Field

[0001] This utility model relates to the field of petroleum extraction technology, specifically to a tubular anti-scaling and anti-wax oil pump. Background Technology

[0002] As oilfield development deepens, the water content in oil wells continues to rise. To further improve crude oil recovery and maintain crude oil production, my country has widely adopted ternary composite oil displacement technology. This technology easily leads to the formation of mixed scale such as calcium silicate, calcium carbonate, and magnesium carbonate in the produced fluid. Due to the small gap between the pump barrel and the plunger, these scale deposits on the inner wall of the pump barrel and the outer wall of the plunger, easily causing pump jamming. At the same time, during the extraction process, wax separates and precipitates from the oil, continuously depositing and causing blockages, shortening the operation cycle, and seriously affecting oil well production.

[0003] To address the problems of scale buildup and blockage in oil pumps, this invention provides a tubular anti-scale and anti-wax oil pump, specifically designed for the aforementioned oilfield conditions. Utility Model Content

[0004] The purpose of this utility model is to provide a tubular anti-scaling and anti-wax oil pump, which can effectively prevent scale deposition and wax blockage by setting an anti-scaling and anti-wax alloy.

[0005] The technical solution of this utility model is as follows:

[0006] A tubular anti-scaling and anti-wax oil pump includes: a pump barrel coupling, a pump barrel, an anti-scaling and anti-wax alloy plunger assembly, an anti-scaling and anti-wax alloy fixed valve assembly, an oil pipe coupling, and an anti-scaling and anti-wax alloy device.

[0007] The pump barrel coupling is connected to the upper end of the pump barrel by a thread; the pump barrel is equipped with an anti-scaling and anti-wax alloy plunger assembly; the anti-scaling and anti-wax alloy fixed valve assembly is installed at the lower end of the pump barrel; the oil pipe coupling is connected to the lower end of the anti-scaling and anti-wax alloy fixed valve assembly and the anti-scaling and anti-wax alloy device respectively.

[0008] The scale and wax prevention alloy device includes a scale and wax prevention outer tube, a scale and wax prevention alloy component, and a scale and wax prevention alloy reducing connector; the upper end of the scale and wax prevention outer tube is connected to the oil pipe coupling, and the lower end is connected to the scale and wax prevention alloy reducing connector; the scale and wax prevention alloy component is disposed inside the scale and wax prevention outer tube.

[0009] Furthermore, the plunger, plunger valve cover, plunger connector and other components of the anti-scaling and anti-wax alloy plunger assembly contain catalytic alloying elements.

[0010] Furthermore, the valve cover, connectors, and other components of the anti-scaling and anti-wax alloy fixed valve assembly contain catalytic alloying elements.

[0011] Furthermore, the anti-scaling and anti-wax alloy component is bowl-shaped with circular cross-sections at both the top and bottom, and the outer diameter of the top opening is larger than the outer diameter of the bottom surface; multiple catalytic through holes are provided on the bottom and sides; the anti-scaling and anti-wax alloy component is made of catalytic alloy.

[0012] Furthermore, the top opening edge of the anti-scaling and anti-wax alloy component is gear-shaped.

[0013] Furthermore, the bottom surface of the anti-scaling and anti-wax alloy component is annular, with multiple circular catalytic through holes evenly distributed in the annular portion;

[0014] Furthermore, the anti-scaling and anti-wax alloy component has multiple circular catalytic through holes evenly distributed on its side.

[0015] Furthermore, the height of the anti-scaling and anti-wax alloy component is 30mm to 50mm.

[0016] Furthermore, the anti-scaling and anti-wax alloy components are used in sets of two or more.

[0017] Furthermore, the outer tube for preventing scale and wax has an external thread on one end and an anti-scale and anti-wax alloy coating on the inner wall, and an internal thread on the other end.

[0018] Furthermore, the anti-scaling and anti-wax alloy reducing connector has an upper external thread on one end and a lower external thread on the other end.

[0019] Furthermore, the oil pipe coupling is connected to the external thread of the anti-scaling and anti-wax outer pipe.

[0020] Furthermore, the internal thread of the anti-scaling and anti-wax outer tube is connected to the upper external thread of the anti-scaling and anti-wax alloy reducing fitting.

[0021] Furthermore, the length of the anti-scaling and anti-wax outer tube is 500mm to 1500mm.

[0022] Furthermore, the scale- and wax-resistant alloy plunger assembly, the scale- and wax-resistant alloy fixed valve assembly, the scale- and wax-resistant alloy coating, and the scale- and wax-resistant alloy reducing fitting contain catalytic alloying elements such as zinc, nickel, copper, and tin.

[0023] Beneficial effects:

[0024] This invention incorporates an anti-scaling and anti-wax alloy component. Two or more of these components are used together and assembled inside the anti-scaling and anti-wax outer tube. The bottom and sides of the component have multiple circular catalytic through holes to facilitate oil flow. Furthermore, the design of the component increases the contact area between the alloy and the oil, allowing for more thorough contact and catalysis, preventing the formation of new scale and promoting the dissolution of existing scale.

[0025] When oil flows through the pipeline, it comes into full contact with the anti-scaling and anti-wax alloy plunger assembly, the anti-scaling and anti-wax alloy fixed valve assembly, and the anti-scaling and anti-wax alloy device. Numerous tiny galvanic cells form on the alloy, causing a polarization effect in the oil through electrochemical means, forming water dipoles. These water dipoles combine with cations and anions, thereby reducing their concentration. Specifically, they combine with calcium and magnesium ions, preventing them from combining with carbonate ions to form calcium carbonate and magnesium carbonate, thus inhibiting the formation of new scale. Under the continuous action of the microcurrent, the crystal structure of the scale layer changes, promoting the gradual dissolution and shedding of old scale, thereby achieving the anti-scaling effect.

[0026] By utilizing the electrical conductivity and surface catalytic properties of the anti-scaling and anti-wax alloy, the wax in the oil disperses into many small crystals during the cooling process, preventing the wax crystals from agglomerating and growing on the tubing and sucker rod. This alters the wax crystal morphology, suspending the wax crystals in the light components, significantly lowering the freezing point and reducing structural strength, thus improving low-temperature fluidity and achieving the anti-wax effect during the lifting process. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the tubular anti-scaling and anti-wax oil pump of this utility model;

[0028] Figure 2 This is a schematic diagram of the anti-scaling and anti-wax outer tube 6 of the tubular anti-scaling and anti-wax oil pump of this utility model;

[0029] Figure 3 This is a schematic diagram of the structure of the anti-scaling and anti-wax alloy reducing joint 8 device for the tubular anti-scaling and anti-wax oil pump of this utility model.

[0030] Figure 4 (a) is a cross-sectional view of the anti-scaling and anti-wax alloy component 7 of the tubular anti-scaling and anti-wax oil pump of this utility model;

[0031] Figure 4 (b) is a top view of the anti-scaling and anti-wax alloy component 7 of the tubular anti-scaling and anti-wax oil pump of this utility model;

[0032] Figure 4 (c) is a perspective view of the anti-scaling and anti-wax alloy component 7 of the tubular anti-scaling and anti-wax oil pump of this utility model;

[0033] In the diagram: 1. Pump barrel coupling; 2. Pump barrel; 3. Anti-scaling and anti-wax alloy plunger assembly; 4. Anti-scaling and anti-wax alloy fixed valve assembly; 5. Oil pipe coupling; 6. Anti-scaling and anti-wax outer pipe; 6.1. External thread; 6.2. Anti-scaling and anti-wax alloy coating; 6.3. Internal thread; 7. Anti-scaling and anti-wax alloy component; 8. Anti-scaling and anti-wax alloy reducing fitting; 8.1. Upper external thread; 8.2. Lower external thread. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0035] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] A tubular anti-scaling and anti-wax oil pump includes: a pump barrel coupling 1, a pump barrel 2, an anti-scaling and anti-wax alloy plunger assembly 3, an anti-scaling and anti-wax alloy fixed valve assembly 4, an oil pipe coupling 5, and an anti-scaling and anti-wax alloy device.

[0037] Pump barrel coupling 1 is connected to the upper end of pump barrel 2 by thread; anti-scaling and anti-wax alloy plunger assembly 3 is installed inside pump barrel 2; anti-scaling and anti-wax alloy fixed valve assembly 4 is installed at the lower end of pump barrel; oil pipe coupling 5 is connected to the lower end of anti-scaling and anti-wax alloy fixed valve assembly 4 and anti-scaling and anti-wax alloy device respectively.

[0038] The scale and wax prevention alloy device includes a scale and wax prevention outer tube 6, a scale and wax prevention alloy component 7, and a scale and wax prevention alloy reducing connector 8; the upper end of the scale and wax prevention outer tube 6 is connected to the oil pipe coupling 5, and the lower end is connected to the scale and wax prevention alloy reducing connector 8; the scale and wax prevention alloy component 7 is disposed inside the scale and wax prevention outer tube 6.

[0039] The anti-scaling and anti-wax alloy plunger assembly 3 contains catalytic alloying elements in its plunger, plunger valve cover, plunger connector, and other components.

[0040] The valve cover, connectors and other components of the aforementioned anti-scaling and anti-wax alloy fixed valve assembly 4 contain catalytic alloying elements.

[0041] The scale-proof and wax-proof alloy component 7 is bowl-shaped with circular cross-sections at both the top and bottom, and the outer diameter of the top opening is larger than the outer diameter of the bottom surface; multiple catalytic through holes are provided on the bottom and sides; the scale-proof and wax-proof alloy component 7 is made of catalytic alloy.

[0042] The top opening edge of the anti-scalding and anti-wax alloy component 7 is gear-shaped.

[0043] The bottom surface of the anti-scaling and anti-wax alloy component 7 is annular, with multiple circular catalytic through holes evenly distributed in the annular portion; the inner diameter of the annular component can be greater than or equal to the inner diameter of the circular catalytic through holes on the bottom surface; the larger inner diameter of the annular component is beneficial for the oil to flow quickly and fully contact the anti-scaling and anti-wax alloy component.

[0044] The anti-scaling and anti-wax alloy component 7 has multiple circular catalytic through holes evenly distributed on its side. The circular catalytic through holes are arranged side by side on the side of the anti-scaling and anti-wax alloy component, and are circles with a larger diameter in the vertical direction and a smaller diameter in the horizontal direction. This is more conducive to the passage of oil and at the same time, it allows the oil to fully contact the anti-scaling and anti-wax alloy.

[0045] The anti-scaling and anti-wax outer tube 6 has a length of 500mm to 1500mm. The anti-scaling and anti-wax alloy component 7 has a height of 30mm to 50mm.

[0046] The scale-proof and wax-proof outer tube 6 has an external thread 6.1 on one end surface and an scale-proof and wax-proof alloy coating 6.2 on the inner wall, and an internal thread 6.3 on the other end; the scale-proof and wax-proof alloy reducing connector 8 has an upper external thread 8.1 on one end and a lower external thread 8.2 on the other end.

[0047] The oil pipe coupling 5 is connected to the external thread 6.1 of the anti-scaling and anti-wax outer tube. The internal thread 6.3 of the anti-scaling and anti-wax outer tube is connected to the upper external thread 8.1 of the anti-scaling and anti-wax alloy reducer.

[0048] The scale- and wax-resistant alloy plunger assembly, scale- and wax-resistant alloy fixed valve assembly, scale- and wax-resistant alloy coating, and scale- and wax-resistant alloy reducing fitting contain catalytic alloying elements such as zinc, nickel, copper, and tin.

[0049] In use, two anti-scaling and anti-wax alloy components 7 are placed in contact with each other at their bottom surfaces to form a group. Two or more groups of anti-scaling and anti-wax alloy components 7 are used together. The circular catalytic through-holes on the bottom surfaces of the two components are aligned to facilitate oil flow. The top opening of one group of anti-scaling and anti-wax alloy components is aligned with the top opening of the other group and placed inside the anti-scaling and anti-wax outer tube 6. Two or more groups are used, arranged sequentially from top to bottom. When oil passes through, it flows through the through-holes of the anti-scaling and anti-wax alloy components, making full contact with the anti-scaling and anti-wax alloy coating on the inner wall of the anti-scaling and anti-wax outer tube, the anti-scaling and anti-wax alloy components, the anti-scaling and anti-wax alloy reducer, the anti-wax and anti-scaling alloy fixed valve assembly, and the anti-scaling and anti-wax alloy plunger assembly. This allows for more thorough catalysis between the oil and the anti-scaling and anti-wax alloy, thereby preventing the formation of new scale and promoting the dissolution of old scale.

[0050] Principle: The anti-scaling and anti-wax alloy components are made of known catalytic alloys containing metals such as zinc, nickel, copper, and tin. The anti-scaling and anti-wax alloy plunger assembly, the anti-scaling and anti-wax alloy fixed valve assembly, the anti-scaling and anti-wax alloy coating, and the anti-scaling and anti-wax alloy reducing fitting contain catalytic alloying elements such as zinc, nickel, copper, and tin. When oil flows through the alloy, the device electrochemically polarizes the oil, forming water dipoles. These water dipoles combine with cations and anions, thereby reducing their concentration. Specifically, the combination with calcium and magnesium ions prevents them from combining with carbonate ions to form calcium carbonate and magnesium carbonate, thus inhibiting the formation of new scale. Under the continuous action of a microcurrent, the crystal structure of the scale layer changes, promoting the gradual dissolution and removal of old scale.

[0051] By utilizing the electrical conductivity and surface catalytic properties of the anti-scaling and anti-wax alloy, the wax in the oil disperses into many small crystals during the cooling process, preventing the wax crystals from agglomerating and growing on the tubing and sucker rod. This alters the wax crystal morphology, suspending the wax crystals in the light components, significantly lowering the freezing point and reducing structural strength, thus improving low-temperature fluidity and achieving the anti-wax effect during the lifting process.

[0052] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tubular scale and wax control pump, characterized in that, include: Pump barrel coupling (1), pump barrel (2), anti-scaling and anti-wax alloy plunger assembly (3), anti-scaling and anti-wax alloy fixed valve assembly (4), oil pipe coupling (5) and anti-scaling and anti-wax alloy device; Pump barrel coupling (1) is connected to the upper end of pump barrel (2) by thread; anti-scaling and anti-wax alloy plunger assembly (3) is installed inside pump barrel (2); anti-scaling and anti-wax alloy fixed valve assembly (4) is installed at the lower end of pump barrel; oil pipe coupling (5) is connected to the lower end of anti-scaling and anti-wax alloy fixed valve assembly (4) and anti-scaling and anti-wax alloy device respectively. The scale and wax prevention alloy device includes a scale and wax prevention outer tube (6), a scale and wax prevention alloy component (7), and a scale and wax prevention alloy reducing connector (8); the upper end of the scale and wax prevention outer tube (6) is connected to the oil pipe coupling (5), and the lower end is connected to the scale and wax prevention alloy reducing connector (8); the scale and wax prevention alloy component (7) is installed inside the scale and wax prevention outer tube (6).

2. The pipe type anti-fouling and anti-wax oil well pump according to claim 1, characterized in that, The scale and wax prevention alloy component (7) is bowl-shaped with circular cross-sections at both the top and bottom, and the outer diameter of the top opening is larger than the outer diameter of the bottom surface; multiple catalytic through holes are provided on the bottom and sides; the scale and wax prevention alloy component (7) is made of catalytic alloy.

3. The pipe type anti-fouling and anti-wax oil well pump according to claim 2, characterized in that, The top opening edge of the anti-scalding and anti-wax alloy component (7) is gear-shaped.

4. The pipe type anti-fouling and anti-wax oil well pump according to claim 3, characterized in that, The bottom surface of the anti-scaling and anti-wax alloy component (7) is annular, and multiple circular catalytic through holes are evenly distributed in the annular part; The anti-scaling and anti-wax alloy component (7) has multiple circular catalytic through holes evenly distributed on its side.

5. The pipe type anti-fouling and anti-wax oil well pump according to claim 4, characterized in that, The height of the anti-scaling and anti-wax alloy component (7) is 30mm~50mm.

6. A tubular scale and wax control pump as defined in claim 5 wherein, The anti-scaling and anti-wax alloy components (7) are used in groups of two or more.

7. The pipe type anti-scale and anti-wax oil well pump according to claim 1, characterized in that, The scale-proof and wax-proof outer tube (6) has an external thread (6.1) on one end surface, an scale-proof and wax-proof alloy coating (6.2) on the inner wall, and an internal thread (6.3) on the other end. The anti-scaling and anti-wax alloy reducing connector (8) has an upper external thread (8.1) on one end and a lower external thread (8.2) on the other end. The oil pipe coupling (5) is connected to the external thread (6.1) of the anti-scaling and anti-wax outer pipe; The internal thread (6.3) of the anti-scaling and anti-wax outer tube is connected to the upper external thread (8.1) of the anti-scaling and anti-wax alloy reducing fitting.

8. The pipe type anti-scale and anti-wax oil well pump according to claim 1, characterized in that, The length of the anti-scaling and anti-wax outer tube (6) is 500mm~1500mm.

9. The pipe type anti-scale and anti-wax oil well pump according to claim 1, characterized in that, The anti-scaling and anti-wax alloy reducing connector (8) contains catalytic alloying elements; the plunger, plunger valve cover, and plunger connector of the anti-scaling and anti-wax alloy plunger assembly (3) contain catalytic alloying elements; The valve cover and connector components of the anti-scaling and anti-wax alloy fixed valve assembly (4) contain catalytic alloy elements.

10. The pipe type anti-scale and anti-wax oil well pump according to claim 9, characterized in that, The scale- and wax-resistant alloy plunger assembly, scale- and wax-resistant alloy fixed valve assembly, scale- and wax-resistant alloy coating, and scale- and wax-resistant alloy reducing fitting contain zinc, nickel, copper, and tin catalytic alloy elements.

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