Oil field production water blocking and plugging device

Abstract

The utility model discloses a water blocking device for oil field production, which belongs to the field of oil field production and comprises a water blocking component, the water blocking component comprises a central pipe, the upper end of the central pipe is fixedly connected with a clamping head, the side surface of the central pipe is sleeved with a plurality of rubber pipes, and sealing rings are connected among the rubber pipes. An upper connector and a lower connector are detachably installed at the upper end and the lower end of the center pipe correspondingly, a vulcanization core is installed at the upper end of the lower connector, the side surfaces of the multiple rubber pipes are sleeved with an air bag, and the side surface of the air bag is fixedly connected with an air inlet nozzle. According to the water blocking and plugging device, the water blocking and plugging operation in the oil field production process can be remarkably improved through the arranged water blocking and plugging assembly, so that the practicability of the water blocking and plugging device is enhanced, meanwhile, the water blocking and plugging assembly can be disassembled and assembled through mutual matching of the structures, and the replacement convenience of all parts is improved.

Description

Technical Field

[0001] This utility model relates to the field of oilfield production, specifically to an oilfield production water-blocking device. Background Technology

[0002] Oilfield water plugging refers to a series of downhole technological measures taken to control the flow of water in oil wells and change the flow direction of water in water-driven oil production, thereby improving water-driven oil efficiency and maintaining increased or stable oil production. These measures include two methods: mechanical water plugging and chemical water plugging. Mechanical water plugging uses downhole packers or bridge plugs and their matching tools to seal high-water-producing sections, thereby solving the problem of inter-layer interference in multi-layered oil wells and better utilizing the reserves of low-water-cut oil layers. Chemical water plugging involves injecting water-blocking agents or water-reducing agents into the water-producing layer to seal the water-producing pores or change the mobility of formation water to achieve the purpose of water plugging. Existing water plugging devices have simple structures, mostly interlocking structures, which are not convenient to disassemble and replace, and the water plugging effect is not significant enough. Therefore, it is necessary to provide a water plugging device that is easy to disassemble and replace and can guarantee the water plugging effect. Utility Model Content

[0003] This utility model provides an oilfield water-blocking device, which aims to solve the problems of insufficient water-blocking effect and inconvenience in disassembly and assembly of existing water-blocking devices.

[0004] To achieve the above objectives, this utility model provides an oilfield production water-blocking device, including a water-blocking component;

[0005] The water-blocking assembly includes a central tube with a clamp head fixedly connected to its upper end. Several rubber tubes are sleeved on the side surface of the central tube, and sealing rings are connected between the rubber tubes. An upper connector and a lower connector are detachably installed at both ends of the central tube. A vulcanized core is installed at the upper end of the lower connector. Air bladders are sleeved on the side surfaces of the rubber tubes, and air inlets are fixedly connected to the side surfaces of the air bladders.

[0006] As a preferred embodiment of this utility model, the inner walls of several rubber tubes are provided with annular grooves, and the side surface of the central tube is equidistantly connected with several locking ribs, which are all engaged inside the annular grooves.

[0007] As a preferred embodiment of this utility model, the inner wall of the upper connector is provided with a positioning groove, and the clamp head is engaged inside the positioning groove.

[0008] As a preferred embodiment of this utility model, several pin holes are provided at both ends of the central tube, the upper connector, the lower connector, and the side surface of the vulcanized core, and a pin is inserted into the interior of each of the pin holes.

[0009] In a preferred embodiment of this invention, both the sealing ring and the airbag are made of rubber.

[0010] In a preferred embodiment of this invention, the central tube is made of stainless steel.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. When performing water plugging operations in oilfields, first connect the central pipe to the upper and lower connectors and related parts. During the water plugging operation, control the upper and lower connectors to squeeze each other, causing several rubber hoses to deform under pressure. At the same time, inflate the airbag through the air inlet. As the airbag collides with and contacts the inner wall of the pipe, the combined effect of several rubber hoses can significantly improve the water plugging effect. Compared with existing water plugging devices, this utility model can significantly improve the water plugging effect through the above-mentioned structure, thus enhancing the practicality of the water plugging device.

[0013] 2. When disassembling the water-blocking device, first remove the pin from the pin hole, so that the upper and lower connectors can be removed from the side surface of the central tube. This allows for the disassembly of several rubber tubes and sealing rings. Then, remove the clamp from the positioning groove to disassemble the water-blocking assembly. Compared with existing water-blocking devices, this invention, through the cooperation of the above structures, facilitates the disassembly and assembly of each component, thereby improving the ease of replacement of each component. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the water-blocking component structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the central tube structure of this utility model;

[0017] Figure 4 This is a disassembled diagram of the water-blocking component structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the airbag structure of this utility model.

[0019] In the diagram: 100, water-blocking assembly; 101, central tube; 102, clamp head; 103, rubber tube; 104, sealing ring; 105, upper connector; 106, lower connector; 107, vulcanized core; 108, air bladder; 109, air inlet; 111, annular groove; 112, clamping edge; 121, positioning groove; 131, pin hole; 132, pin rod. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-5 This utility model provides an oilfield production water blocking device, including a water blocking component 100;

[0022] The water-blocking assembly 100 includes a central tube 101, with a clamp head 102 fixedly connected to the upper end of the central tube 101. Several rubber tubes 103 are sleeved on the side surface of the central tube 101, and sealing rings 104 are connected between the rubber tubes 103. An upper connector 105 and a lower connector 106 are detachably installed at the upper and lower ends of the central tube 101, respectively. A vulcanized core 107 is installed at the upper end of the lower connector 106. An air bladder 108 is sleeved on the side surface of the rubber tubes 103, and an air inlet 109 is fixedly connected to the side surface of the air bladder 108.

[0023] In one specific embodiment, the water-blocking assembly 100 not only significantly improves the water-blocking operation in the oilfield production process, thereby enhancing the practicality of the water-blocking device, but also allows for easy disassembly and assembly of the water-blocking assembly 100 through the cooperation of the above structures, improving the convenience of replacing each component. In use, the water-blocking assembly 100 is first installed in the sucker pipe. At this time, the air bladder 108 is inflated through the air inlet 109. The inflated air bladder 108 collides with and contacts the inner wall of the sucker pipe, while the water-blocking assembly 100 is compressed, thereby deforming several rubber tubes 103 and squeezing the air bladder 108, thus further improving the water-blocking effect. During disassembly, the central tube 101, rubber tubes 103, sealing ring 104, upper connector 105, and lower connector 106 can be disassembled simply by removing the pin 132 from the pin hole 131, thereby improving the convenience of disassembly and replacement of each component.

[0024] Please see Figures 2-5 The inner walls of several rubber tubes 103 are provided with annular grooves 111, and several ferrules 112 are equidistantly connected to the side surface of the central tube 101. The ferrules 112 are all engaged inside the annular grooves 111.

[0025] In one specific embodiment, the snap-fit ​​112 engaging inside the annular slot 111 can improve the ease of disassembly and replacement between the central tube 101 and several rubber tubes 103.

[0026] Please see Figures 2-5The upper connector 105 has a positioning groove 121 on its inner wall, and the clamp 102 is clamped inside the positioning groove 121.

[0027] In one specific embodiment, the positioning groove 121 is used to improve the snap-fit ​​stability between the upper connector 105 and the snap-fit ​​head 102, and at the same time facilitates the disassembly of the two.

[0028] Please see Figures 2-5 Several pin holes 131 are provided at both ends of the central tube 101, the upper connector 105, the lower connector 106, and the side surface of the vulcanized core 107. A pin rod 132 is inserted into the interior of each of the pin holes 131.

[0029] In one specific embodiment, the pin 132 is inserted into the pin hole 131, which can improve the ease of disassembly and assembly of the various components of the water-blocking assembly 100.

[0030] Please see Figures 2-5 Both the sealing ring 104 and the airbag 108 are made of rubber.

[0031] In one specific embodiment, the rubber sealing ring 104 and the airbag 108 can help enhance the water-blocking effect.

[0032] Please see Figures 2-5 The central tube 101 is made of stainless steel.

[0033] In one specific embodiment, the stainless steel central tube 101 can prevent rust, thereby extending the service life of the central tube 101.

[0034] Working principle: In use, the water-blocking component 100 is first installed in the oil pipe. Then, the air bag 108 is inflated through the air inlet 109. The air bag 108 is inflated and contacts the inner wall of the oil pipe. Then, the water-blocking component 100 is compressed to control the deformation of several rubber tubes 103 and squeeze the air bag 108, thereby further improving the water-blocking effect. When disassembling, the central tube 101, rubber tubes 103, sealing ring 104, upper connector 105 and lower connector 106 can be disassembled simply by removing the pin 132 from the pin hole 131, thereby improving the convenience of disassembly and replacement of each component.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An oilfield production water-blocking device, characterized in that, include: A water-blocking assembly (100) includes a central tube (101), a clamp head (102) is fixedly connected to the upper end of the central tube (101), a plurality of rubber tubes (103) are sleeved on the side surface of the central tube (101), and a sealing ring (104) is connected between the plurality of rubber tubes (103). An upper connector (105) and a lower connector (106) are detachably installed at the upper and lower ends of the central tube (101), respectively. A vulcanized core (107) is installed at the upper end of the lower connector (106), and an air bladder (108) is sleeved on the side surface of the plurality of rubber tubes (103). An air inlet (109) is fixedly connected to the side surface of the air bladder (108).

2. The oilfield production water-blocking device according to claim 1, characterized in that: The inner walls of several rubber tubes (103) are provided with annular grooves (111), and the side surface of the central tube (101) is equidistantly connected with several ferrules (112), and the several ferrules (112) are engaged inside the annular grooves (111).

3. The oilfield production water-blocking device according to claim 1, characterized in that: The upper connector (105) has a positioning groove (121) on its inner wall, and the clamp (102) is engaged inside the positioning groove (121).

4. The oilfield production water-blocking device according to claim 1, characterized in that: Several pin holes (131) are provided on both ends of the central tube (101), the upper connector (105), the lower connector (106), and the side surface of the vulcanized core (107), and pin rods (132) are inserted into the interior of the several pin holes (131).

5. The oilfield production water-blocking device according to claim 1, characterized in that: Both the sealing ring (104) and the airbag (108) are made of rubber.

6. The oilfield production water-blocking device according to claim 1, characterized in that: The central tube (101) is made of stainless steel.

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