Oil well pump for oil field exploitation

Abstract

The utility model discloses an oil well pump for oil field exploitation, which relates to the technical field of oil well pumps, and comprises a main body unit, a filter unit arranged below the main body unit, a mounting unit arranged in the main body unit, and a cleaning unit and a sealing unit which are arranged in the filter unit, the cleaning unit is positioned below the sealing unit; the filter unit comprises a filter pipe mounted at the bottom of the main body unit, an extraction pipe mounted at the bottom of the filter pipe, and a filter screen mounted on the inner wall of the filter pipe; the sealing unit comprises a telescopic piece arranged in the extraction pipe and a sealing ball installed on the top of the telescopic piece and located in the filtering pipe. According to the oil well pump for oil field exploitation, through the arrangement of the filtering unit and the sealing unit, solid impurities in petroleum are prevented from being sucked into the oil well pump, and normal work of the oil well pump is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of oil well pumps, in particular to an oil well pump used in oil field development. Background Art

[0002] An oil well pump is an underground device that is driven by a pumping unit to lift the crude oil in the well to the ground. An ordinary oil well pump is mainly composed of four parts: a pump barrel, a suction valve, a piston, and a discharge valve. According to the way the oil well pump is fixed underground, it can be divided into a tube pump and a rod pump.

[0003] The patent application CN 221683186U discloses a pump for oilfield development. The pump belongs to the field of oilfield extraction and includes: a pump body, the pumping end of which is connected to a pumping pipe, a connecting assembly disposed between the pump body and the pumping pipe; and a telescopic assembly, comprising a movable tube, a first spring, and an annular piston. The utility model includes a telescopic assembly that can adapt to oil tanks of varying depths, avoiding incomplete pumping and a lack of stable support, thereby increasing practicality. Furthermore, a connecting assembly is provided that allows for quick and convenient installation and removal of the pumping pipe, facilitating maintenance and transportation. Furthermore, a fixing assembly is provided that automatically secures the pump to the oil tank, ensuring the stability of the pumping operation.

[0004] Although the above scheme can automatically fix the oil pump and the oil storage tank through the setting of the fixing component, thereby ensuring the stability of the oil pumping operation, during the oil field exploitation process, solid impurities in the petroleum will inevitably be sucked into the oil pump, affecting the normal operation of the oil pump and even damaging the oil pump. For this reason, we propose an oil pump for oil field exploitation. Utility Model Content

[0005] The main purpose of the utility model is to provide an oil well pump used in oil field development, which solves the problem that solid impurities in the petroleum are inevitably sucked into the oil well pump during the oil field development process, thereby affecting the normal operation of the oil well pump by providing a filtering unit and a sealing unit.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A well pump for oilfield development, comprising a main body unit, a filter unit disposed below the main body unit, a mounting unit disposed inside the main body unit, and a cleaning unit and a sealing unit disposed inside the filter unit, wherein the cleaning unit is located below the sealing unit.

[0008] The filter unit includes a filter tube installed at the bottom of the main unit, an extraction tube installed at the bottom of the filter tube, and a filter screen installed on the inner wall of the filter tube;

[0009] The sealing unit comprises a telescopic member arranged inside the extraction tube, and a sealing ball installed on the top of the telescopic member and located inside the filter tube.

[0010] Preferably, the main unit includes a fixed cover, an oil pumping pipe installed through the top of the fixed cover, an oil storage member provided above the oil pumping pipe, and an oil pump body installed on the top of the oil storage member.

[0011] Preferably, the oil storage member includes an oil storage pipe installed on the top of the oil extraction pipe, and an oil outlet pipe installed on the side wall of the oil storage pipe.

[0012] Preferably, the mounting unit comprises an electric telescopic rod fixed to the inner side wall of the cover, and an arc-shaped clamping plate mounted on the telescopic end of the electric telescopic rod, and there are two groups of mounting units, which are symmetrically arranged about the oil extraction pipe.

[0013] Preferably, the cleaning unit includes a screw movably arranged inside the filter tube, a drive motor installed at the input end of the screw, a cleaning member arranged on the screw, and a limiting washer installed on the inner wall of the filter tube and sleeved on the screw.

[0014] Preferably, the cleaning member includes a moving member installed on the peripheral side of the screw rod, and a cleaning soft brush installed on the side wall of the moving member.

[0015] Preferably, the telescopic member comprises a fixing ring mounted on the inner side wall of the extraction tube, and a connecting spring mounted on the top of the fixing ring and extending to the interior of the filter tube.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] In the utility model, through the provided filtering unit and the sealing unit, when it is necessary to extract the oil from the oil field, the extraction pipe is inserted into the oil storage tank, and the oil storage tank is pressed upward to press the fixed cover. At this time, the telescopic end of the electric telescopic rod is extended until the two arc-shaped clamping plates are in contact with the side walls of the oil storage tank and stop, thereby achieving stable installation before oil extraction. Subsequently, the oil pump body is started, and the oil pump body extracts oil from the extraction pipe into the interior of the filter pipe. The oil pushes open the sealing ball and causes the sealing ball to stretch the connecting spring. Subsequently, the oil passes through the filter screen into the extraction pipe and flows into the oil storage pipe, thereby achieving filtration of the oil during extraction and avoiding solids in the oil. The solid impurities are sucked into the oil pump, ensuring the normal operation of the oil pump; when the oil extraction is completed, the sealing ball falls under the action of gravity and the elastic force of the connecting spring, and the connection between the extraction pipe and the filter pipe is blocked. Then, the driving motor drives the screw to rotate, so that the cleaning part moves along the screw, so that the cleaning soft brush removes the residual attachments on the filter screen, and then opens the sealing plate opened on the side wall of the filter tube (this structure is common knowledge and is not shown in the figure. It is easy for technicians in this field to think of it, so it will not be described in detail) to clean the solid impurities inside the filter tube, thereby preventing the solid impurities from falling back and contaminating the subsequently extracted oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the utility model from above;

[0020] Figure 3 For this utility model Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle;

[0021] Figure 4 For this utility model Figure 3 A magnified schematic diagram of the middle I structure;

[0022] Figure 5 For this utility model Figure 3 Schematic diagram of the enlarged structure of II.

[0023] In the picture:

[0024] 1. Main unit; 101. Fixed cover; 102. Oil pump pipe; 103. Oil storage component; 1031. Oil storage pipe; 1032. Oil outlet pipe; 104. Oil pump body;

[0025] 2. Filter unit; 201. Filter tube; 202. Extraction tube; 203. Filter screen;

[0026] 3. Mounting unit; 301. Electric telescopic rod; 302. Arc clamping plate;

[0027] 4. Cleaning unit; 401. Screw rod; 402. Drive motor; 403. Cleaning element; 4031. Moving element; 4032. Cleaning brush; 404. Limiting washer;

[0028] 5. Enclosed unit; 501. Telescopic member; 5011. Fixed ring; 5012. Connecting spring; 502. Sealing ball. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods. Example

[0030] like Figure 1 、 Figure 2 、 Figure 3 as well as Figure 5 As shown, a well pump for oilfield development includes a main unit 1, a filter unit 2 disposed below the main unit 1, a mounting unit 3 disposed inside the main unit 1, and a cleaning unit 4 and a sealing unit 5 disposed inside the filter unit 2, wherein the cleaning unit 4 is located below the sealing unit 5;

[0031] like Figure 3 As shown, the filter unit 2 includes a filter tube 201 installed at the bottom of the main unit 1, an extraction pipe 202 installed at the bottom of the filter tube 201, and a filter screen 203 installed on the inner wall of the filter tube 201. The filter screen 203 can filter out solid impurities in the petroleum.

[0032] like Figure 5 As shown, the sealing unit 5 includes a telescopic member 501 arranged inside the extraction tube 202, and a sealing ball 502 installed on the top of the telescopic member 501 and located inside the filter tube 201. The setting of the sealing ball 502 can achieve sealing of the connection between the extraction tube 202 and the filter tube 201.

[0033] like Figure 1 As shown, the main unit 1 includes a fixed cover 101, an oil extraction pipe 102 installed through the top of the fixed cover 101, an oil storage component 103 arranged above the oil extraction pipe 102, and an oil pump body 104 installed on the top of the oil storage component 103. When the oil pump body 104 is working, the oil extracted from the oil extraction pipe 102 can be input into the oil storage component 103 for storage.

[0034] like Figure 2 As shown, the oil storage member 103 includes an oil storage pipe 1031 installed on the top of the oil extraction pipe 102, and an oil outlet pipe 1032 installed on the side wall of the oil storage pipe 1031. The setting of the oil outlet pipe 1032 facilitates the output of the oil in the oil storage pipe 1031.

[0035] like Figure 3 As shown, the mounting unit 3 includes an electric telescopic rod 301 fixed to the inner side wall of the cover 101, and an arc-shaped clamping plate 302 installed at the telescopic end of the electric telescopic rod 301. There are two groups of mounting units 3, and the two groups of mounting units 3 are symmetrically arranged about the oil extraction pipe 102. During the extension and retraction process of the electric telescopic rod 301, the arc-shaped clamping plate 302 can be driven to move synchronously.

[0036] like Figure 3 As shown, the cleaning unit 4 includes a screw rod 401 movably arranged inside the filter tube 201, a driving motor 402 installed at the input end of the screw rod 401, a cleaning member 403 arranged on the screw rod 401, and a limiting washer 404 installed on the inner wall of the filter tube 201 and sleeved on the screw rod 401. When the driving motor 402 drives the screw rod 401 to rotate, the cleaning member 403 can move along the screw rod 401.

[0037] like Figure 5 As shown, the telescopic member 501 includes a fixing ring 5011 installed on the inner wall of the extraction tube 202, and a connecting spring 5012 installed on the top of the fixing ring 5011 and extending to the inside of the filter tube 201. The setting of the connecting spring 5012 makes the up and down movement of the sealing ball 502 more stable.

[0038] When it is necessary to extract the oil from the oil field, the extraction pipe 202 is inserted into the oil storage tank, and the oil storage tank is squeezed upward to squeeze the fixed cover 101. At this time, the telescopic end of the electric telescopic rod 301 extends until the two arc-shaped clamping plates 302 are in contact with the side walls of the oil storage tank and stop, thereby achieving stable installation before oil extraction. Subsequently, the oil pump body 104 is started, and the oil pump body 104 extracts oil from the extraction pipe 202 into the inside of the filter pipe 201. The oil pushes open the sealing ball 502 and causes the sealing ball 502 to stretch the connecting spring 5012. Subsequently, the oil passes through the filter screen 203 into the oil extraction pipe 102 and flows into the oil storage pipe 1031, thereby achieving filtration during the oil extraction process, preventing solid impurities in the oil from being sucked into the oil pump, and ensuring the normal operation of the oil pump. Example

[0039] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 as well as Figure 5 As shown, a well pump for oilfield development includes a main unit 1, a filter unit 2 disposed below the main unit 1, a mounting unit 3 disposed inside the main unit 1, and a cleaning unit 4 and a sealing unit 5 disposed inside the filter unit 2, wherein the cleaning unit 4 is located below the sealing unit 5;

[0040] like Figure 3 As shown, the filter unit 2 includes a filter tube 201 installed at the bottom of the main unit 1, an extraction pipe 202 installed at the bottom of the filter tube 201, and a filter screen 203 installed on the inner wall of the filter tube 201. The filter screen 203 can filter out solid impurities in the petroleum.

[0041] like Figure 5 As shown, the sealing unit 5 includes a telescopic member 501 arranged inside the extraction tube 202, and a sealing ball 502 installed on the top of the telescopic member 501 and located inside the filter tube 201. The setting of the sealing ball 502 can achieve sealing of the connection between the extraction tube 202 and the filter tube 201.

[0042] like Figure 1 As shown, the main unit 1 includes a fixed cover 101, an oil extraction pipe 102 installed through the top of the fixed cover 101, an oil storage component 103 arranged above the oil extraction pipe 102, and an oil pump body 104 installed on the top of the oil storage component 103. When the oil pump body 104 is working, the oil extracted from the oil extraction pipe 102 can be input into the oil storage component 103 for storage.

[0043] like Figure 2 As shown, the oil storage member 103 includes an oil storage pipe 1031 installed on the top of the oil extraction pipe 102, and an oil outlet pipe 1032 installed on the side wall of the oil storage pipe 1031. The setting of the oil outlet pipe 1032 facilitates the output of the oil in the oil storage pipe 1031.

[0044] like Figure 3 As shown, the mounting unit 3 includes an electric telescopic rod 301 fixed to the inner side wall of the cover 101, and an arc-shaped clamping plate 302 installed at the telescopic end of the electric telescopic rod 301. There are two groups of mounting units 3, and the two groups of mounting units 3 are symmetrically arranged about the oil extraction pipe 102. During the extension and retraction process of the electric telescopic rod 301, the arc-shaped clamping plate 302 can be driven to move synchronously.

[0045] like Figure 3 As shown, the cleaning unit 4 includes a screw rod 401 movably arranged inside the filter tube 201, a driving motor 402 installed at the input end of the screw rod 401, a cleaning member 403 arranged on the screw rod 401, and a limiting washer 404 installed on the inner wall of the filter tube 201 and sleeved on the screw rod 401. When the driving motor 402 drives the screw rod 401 to rotate, the cleaning member 403 can move along the screw rod 401.

[0046] like Figure 4As shown, the cleaning member 403 includes a moving member 4031 installed on the side surface of the screw rod 401, and a cleaning soft brush 4032 installed on the side wall of the moving member 4031. When the cleaning member 403 moves along the screw rod 401, the cleaning soft brush 4032 can remove the residual attachments on the filter screen 203.

[0047] like Figure 5 As shown, the telescopic member 501 includes a fixing ring 5011 installed on the inner wall of the extraction tube 202, and a connecting spring 5012 installed on the top of the fixing ring 5011 and extending to the inside of the filter tube 201. The setting of the connecting spring 5012 makes the up and down movement of the sealing ball 502 more stable.

[0048] After the oil extraction is completed, under the action of gravity and the elastic force of the connecting spring 5012, the sealing ball 502 falls, and the connection between the extraction pipe 202 and the filter pipe 201 is blocked. Then, the driving motor 402 drives the screw rod 401 to rotate, so that the cleaning member 403 moves along the screw rod 401, so that the cleaning soft brush 4032 removes the residual attachments on the filter screen 203. Then, the sealing plate opened on the side wall of the filter pipe 201 is opened (this structure is common knowledge and is not shown in the figure. It is easy for technicians in this field to think of it, so it is not repeated here) to clean the solid impurities inside the filter pipe 201, thereby preventing the solid impurities from falling back and contaminating the subsequently extracted oil.

[0049] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A well pump for oilfield development, comprising a main unit (1), characterized in that: It also includes a filter unit (2) arranged below the main unit (1), a mounting unit (3) arranged inside the main unit (1), and a cleaning unit (4) and a sealing unit (5) arranged inside the filter unit (2), wherein the cleaning unit (4) is located below the sealing unit (5); The filter unit (2) comprises a filter tube (201) installed at the bottom of the main unit (1), an extraction tube (202) installed at the bottom of the filter tube (201), and a filter screen (203) installed on the inner wall of the filter tube (201); The sealing unit (5) comprises a telescopic member (501) arranged inside the extraction tube (202), and a sealing ball (502) mounted on the top of the telescopic member (501) and located inside the filter tube (201).

2. The oil well pump for oilfield development according to claim 1, characterized in that: The main unit (1) comprises a fixed cover (101), an oil pumping pipe (102) installed through the top of the fixed cover (101), an oil storage member (103) arranged above the oil pumping pipe (102), and an oil pump body (104) installed on the top of the oil storage member (103).

3. The oil well pump for oilfield development according to claim 2, characterized in that: The oil storage member (103) comprises an oil storage pipe (1031) installed on the top of the oil extraction pipe (102), and an oil outlet pipe (1032) installed on the side wall of the oil storage pipe (1031).

4. The oil well pump for oilfield development according to claim 3, characterized in that: The mounting unit (3) comprises an electric telescopic rod (301) fixed to the inner wall of the cover (101), and an arc-shaped clamping plate (302) mounted on the telescopic end of the electric telescopic rod (301), and there are two groups of the mounting units (3), and the two groups of the mounting units (3) are symmetrically arranged with respect to the oil extraction pipe (102).

5. The oil well pump for oilfield development according to claim 1, characterized in that: The cleaning unit (4) comprises a screw (401) movably arranged inside the filter tube (201), a drive motor (402) mounted at the input end of the screw (401), a cleaning member (403) arranged on the screw (401), and a limiting washer (404) mounted on the inner side wall of the filter tube (201) and sleeved on the screw (401).

6. The oil well pump for oilfield development according to claim 5, characterized in that: The cleaning member (403) comprises a moving member (4031) mounted on the peripheral side of the screw rod (401), and a cleaning soft brush (4032) mounted on the side wall of the moving member (4031).

7. The oil well pump for oilfield development according to claim 1, characterized in that: The telescopic member (501) comprises a fixing ring (5011) mounted on the inner wall of the extraction tube (202), and a connecting spring (5012) mounted on the top of the fixing ring (5011) and extending into the interior of the filter tube (201).

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