Inverted flow guide cover for gas-water separation

Abstract

The utility model provides a gas-water separation inverted flow guide cover, and belongs to the technical field of oil extraction equipment. The gas-water separation inverted flow guide cover comprises an electric submersible screw pump assembly and a heating flow guide assembly, the electric submersible screw pump assembly comprises an electric submersible screw pump body, a sleeve and a connecting pipeline, the heating flow guide assembly comprises a flow guide cover body, a heating plate and a stabilizing rod, the top of the flow guide cover body is hollowed out, and the top of the flow guide cover body is hollow. By arranging the electric submersible screw pump body, the sleeve, the connecting pipeline, the flow guide cover bodies, the heating plate and the stabilizer bar, a gas-liquid mixture from the lower part in the sleeve continues to move upwards due to the fact that gas is heavier than liquid, the liquid enters the space between the flow guide cover bodies, and the electric submersible screw pump body is used for sucking away, lifting the gas into the connecting pipeline and conveying the gas to the outside of a bottom well; meanwhile, a heating plate can heat the inside and the outside of the flow guide cover body, so that thick liquid is heated, melted and thinned and conveyed through rapid flowing, a stabilizing rod makes contact with the inner wall of the sleeve for supporting, and stable operation of the electric submersible screw pump body is utilized.

Description

Technical Field

[0001] The present application relates to the field of oil production equipment, and in particular to an inverted guide cover for gas-water separation. Background Art

[0002] The electric submersible screw pump oil production system uses the downhole submersible motor to directly drive the screw pump to lift the liquid. It combines the advantages of rodless oil production system, downhole motor drive and screw pump. Compared with rod pumps, it can save energy by 30% to 60%, and can break through the pumping depth of rod pumps. It can be used in heavy oil wells, sand production wells, gas-bearing wells, inclined wells and horizontal wells. It has a significant effect on avoiding pump sand sticking, sucker rod breaking and sticking caused by sand production. At the same time, ESPCP will not agitate the oil layer, and has the effect of preventing sand and reducing water content.

[0003] At present, submersible screw pumps are usually inserted into the casing of oil wells for use. The large amount of gas in the oil and gas mixture downhole will affect the suction of the submersible screw pump. There is a gap between the submersible screw pump and the casing, which affects the stability of the work, and the thicker liquid will also affect the smoothness of the work. Utility Model Content

[0004] In order to make up for the above deficiencies, the present application provides an inverted air-water separation guide cover, aiming to improve the problems raised in the above background technology.

[0005] An embodiment of the present application provides an inverted air-water separation guide cover including an electric submersible screw pump assembly and a heating guide assembly.

[0006] The submersible screw pump assembly comprises an submersible screw pump body, a casing and a connecting pipeline. The submersible screw pump body is placed in the casing, and the connecting pipeline is connected to the top of the submersible screw pump body.

[0007] The heating and flow guide assembly includes a flow guide cover body, a heating plate and a stabilizing rod. The top of the flow guide cover body is hollow, and the bottom end of the flow guide cover body is fixedly sleeved on the surface of the electric submersible screw pump body. The heating plate is embedded in the flow guide cover body. One end of the stabilizing rod is fixedly connected to the outside of the flow guide cover body, and the other end of the stabilizing rod abuts against the inner wall of the casing.

[0008] In a specific embodiment, an annular space is formed between the electric submersible screw pump body and the casing.

[0009] In the above implementation process, an annular space is formed between the electric submersible screw pump body and the casing for passing the gas-liquid mixture.

[0010] In a specific embodiment, a plurality of through holes are opened at the bottom of the sleeve, and the plurality of through holes are evenly arranged.

[0011] In the above implementation process, a plurality of evenly arranged through holes are provided to inhale the gas-liquid mixture.

[0012] In a specific embodiment, a sealing ring is provided between the flow guide cover and the electric submersible screw pump body.

[0013] In the above implementation process, the sealing performance between the flow guide cover and the electric submersible screw pump body is ensured by providing a sealing ring.

[0014] In a specific embodiment, the bottom of the flow guide cover is conical.

[0015] In the above implementation process, the flow guide cover with a conical bottom is provided to facilitate guiding the gas-liquid mixed flow coming up from below.

[0016] In a specific implementation manner, a connecting plate is fixedly connected to one end of the stabilizing rod, and the connecting plate is fixedly connected to the air guide cover body by bolts.

[0017] In the above implementation process, a connecting plate is provided and bolts are penetrated through the connecting plate to install and fix the bolts on the connecting plate.

[0018] In a specific implementation manner, a positioning groove is provided on the outer surface of the air deflector, and the connecting plate is matched with the positioning groove.

[0019] In the above implementation process, by arranging the connection plate and the positioning groove to be compatible, the protrusions on the surface of the guide cover can be reduced, the flow resistance of the liquid can be reduced, and the positioning installation can be carried out at the same time, thereby improving the installation firmness.

[0020] In a specific embodiment, a plurality of stabilizing rods are evenly arranged, and the ends of the stabilizing rods are arc-shaped and fit the inner wall of the sleeve.

[0021] Beneficial effects: The present application provides an inverted guide cover for gas-water separation. By arranging an electric submersible screw pump body, casing, connecting pipelines, a guide cover body, a heating plate and a stabilizing rod, the gas-liquid mixture coming up from the bottom of the casing continues to move upward because the gas is heavier than the liquid, and the liquid enters between the guide cover body and the guide cover body, and is sucked away by the electric submersible screw pump body and lifted into the connecting pipeline to be transported to the outside of the bottom well. At the same time, the heating plate can heat the inside and outside of the guide cover body, which is conducive to heating, melting and thinning the thick liquid, and utilizing rapid flow for transportation, while the stabilizing rod contacts the inner wall of the casing for support, utilizing the stable operation of the electric submersible screw pump body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the structure of the gas-water separation inverted guide cover provided in the embodiment of the present application;

[0024] Figure 2 A schematic diagram of the structure of an electric submersible screw pump assembly provided in an embodiment of the present application;

[0025] Figure 3 A schematic diagram of the structure of the air guide cover provided in the embodiment of the present application;

[0026] Figure 4 A schematic diagram of the connecting plate structure provided for an embodiment of the present application.

[0027] In the figure: 100-submersible screw pump assembly; 110-submersible screw pump body; 120-casing; 121-through hole; 130-connecting pipeline; 140-annular space; 200-heating guide assembly; 210-guide cover; 212-positioning groove; 220-heating plate; 230-stabilizing rod; 231-connecting plate; 233-bolt; 240-sealing ring. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0029] See also Figure 1-Figure 4 The present application provides an inverted air-water separation guide cover including an electric submersible screw pump assembly 100 and a heating guide assembly 200.

[0030] See also Figure 1 and 2 The submersible screw pump assembly 100 includes an submersible screw pump body 110 , a casing 120 and a connecting pipe 130 . The submersible screw pump body 110 is placed in the casing 120 , and the connecting pipe 130 is connected to the top of the submersible screw pump body 110 .

[0031] An annular space 140 is formed between the electric submersible screw pump body 110 and the casing 120 , and the annular space 140 is formed between the electric submersible screw pump body 110 and the casing 120 for passing the gas-liquid mixture.

[0032] In a specific embodiment, a plurality of through holes 121 are provided at the bottom of the sleeve 120 , and the plurality of through holes 121 are evenly arranged. The plurality of evenly arranged through holes 121 are provided to inhale the gas-liquid mixture.

[0033] Specifically, a sealing ring 240 is provided between the flow guide cover 210 and the electric submersible screw pump body 110 . By providing the sealing ring 240 , the sealing performance between the flow guide cover 210 and the electric submersible screw pump body 110 is ensured.

[0034] It should be noted that the bottom of the flow guide cover 210 is conical. Providing the flow guide cover 210 with a conical bottom is helpful to guide the gas-liquid mixed flow coming up from below.

[0035] See also Figure 1 , 2 , 3 and 4, the heating guide assembly 200 includes a guide cover body 210, a heating plate 220 and a stabilizing rod 230. The top of the guide cover body 210 is hollow, and the bottom end of the guide cover body 210 is fixedly sleeved on the surface of the submersible screw pump body 110. The heating plate 220 is embedded in the guide cover body 210. One end of the stabilizing rod 230 is fixedly connected to the outside of the guide cover body 210, and the other end of the stabilizing rod 230 abuts against the inner wall of the casing 120.

[0036] In a specific implementation, one end of the stabilizing rod 230 is fixedly connected to a connecting plate 231 , and the connecting plate 231 is fixedly connected to the air deflector body 210 via bolts 233 . The connecting plate 231 is set and the bolts 233 penetrate the connecting plate 231 to fix it on the connecting plate 231 .

[0037] Among them, a positioning groove 212 is opened on the outer surface of the deflector body 210, and the connecting plate 231 is adapted to the positioning groove 212. By setting the connecting plate 231 and the positioning groove 212 to be adapted, the protrusions on the surface of the deflector body 210 can be reduced, reducing the flow resistance of the liquid, and at the same time, positioning installation can be carried out to improve the installation firmness.

[0038] In a specific embodiment, a plurality of stabilizing rods 230 are evenly arranged, and the ends of the stabilizing rods 230 are arc-shaped and fit against the inner wall of the sleeve 120 .

[0039] The working principle of the gas-water separation inverted guide cover is as follows: during use, the submersible screw pump body 110 and the guide cover body 210 are placed in the casing 120 of the oil well, the submersible screw pump body 110 is started to start sucking liquid, and the gas-liquid mixture in the oil well enters the interior through the multiple through holes 121 of the casing 120, and then rises along the annular space 140 formed between the submersible screw pump body 110 and the casing 120. The lighter gas continues to rise, while the heavier liquid enters between the guide cover body 210 and the guide cover body 210, and is sucked away by the submersible screw pump body 110 and lifted into the connecting pipeline 130, and transported to the outside of the bottom well. At the same time, the heating plate 220 can heat the inside and outside of the guide cover body 210, which is conducive to heating, melting and thinning the thick liquid, and transporting it by rapid flow, while the stabilizing rod 230 contacts the inner wall of the casing 120 for support, and utilizes the stable operation of the submersible screw pump body 110.

[0040] It should be noted that the specific model and specifications of the electric submersible screw pump body 110 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the field, so it will not be described in detail.

[0041] The power supply and principle of the electric submersible screw pump body 110 are clear to those skilled in the art and will not be described in detail here.

[0042] It is obvious to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An inverted air-water separation guide cover, characterized in that: include An electric submersible screw pump assembly (100), the electric submersible screw pump assembly (100) comprising an electric submersible screw pump body (110), a casing (120) and a connecting pipeline (130), the electric submersible screw pump body (110) being disposed in the casing (120), and the connecting pipeline (130) being connected to the top of the electric submersible screw pump body (110); A heating guide assembly (200), the heating guide assembly (200) comprising a guide cover (210), a heating plate (220) and a stabilizing rod (230), the top of the guide cover (210) being hollow, the bottom end of the guide cover (210) being fixedly sleeved on the surface of the electric submersible screw pump body (110), the heating plate (220) being embedded in the guide cover (210), one end of the stabilizing rod (230) being fixedly connected to the outside of the guide cover (210), and the other end of the stabilizing rod (230) being abutted against the inner wall of the casing (120).

2. The inverted air-water separation guide cover according to claim 1, characterized in that: An annular space (140) is formed between the electric submersible screw pump body (110) and the casing (120).

3. The inverted air-water separation guide cover according to claim 1, characterized in that: The bottom of the sleeve (120) is provided with a plurality of through holes (121), and the plurality of through holes (121) are evenly arranged.

4. The inverted air-water separation guide cover according to claim 1, characterized in that: A sealing ring (240) is provided between the flow guide cover (210) and the electric submersible screw pump body (110).

5. The inverted air-water separation guide cover according to claim 1, characterized in that: The bottom of the flow guide cover (210) is conical.

6. The inverted air-water separation guide cover according to claim 1, characterized in that: One end of the stabilizing rod (230) is fixedly connected to a connecting plate (231), and the connecting plate (231) is fixedly connected to the air deflector body (210) via bolts (233).

7. The inverted air-water separation guide cover according to claim 6, characterized in that: The outer surface of the air guide cover (210) is provided with a positioning groove (212), and the connecting plate (231) is adapted to fit the positioning groove (212).

8. The inverted air-water separation guide cover according to claim 1, characterized in that: A plurality of stabilizing rods (230) are evenly arranged, and the ends of the stabilizing rods (230) are arc-shaped and fit against the inner wall of the sleeve (120).

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