Mechanical setting packer

Abstract

The utility model relates to the technical field of packers, in particular to a mechanical setting packer which is simple in structure and convenient to seal an oil pipe during use, and the practicability of the mechanical setting packer is improved. Comprising a center pipe, a connecting assembly, an anchoring assembly, a pushing assembly and a sealing assembly, the connecting assembly is rotationally installed at the top end of the center pipe, the anchoring assembly is installed on the lower portion of the center pipe and comprises a plurality of limiting sliding columns, a plurality of slips and a plurality of push rods, and the pushing assembly is installed at the bottom end in the center pipe; the anchoring assembly comprises a plurality of limiting sliding columns, a plurality of slips and a plurality of push rods, the pushing assembly is connected with the anchoring assembly, and the sealing assembly is installed on the upper portion of the center pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of packers, in particular to a mechanically set packer. Background Art

[0002] The packer is mainly used for stratified water injection, oil production, water blocking, water finding and oil testing, etc. It is usually used in conjunction with a slip packer or a tubing anchor, and can also be used alone. The mechanical packer has a simple structure, easy operation, stable performance, repeatable setting, safety and reliability. The prior art publication number CN203175462U proposes a mechanical setting packer, in which the upper sealing joint, base pipe and lower joint of the device are connected in sequence from top to bottom, the hydraulic cylinder is sleeved on the base pipe, the claw spring sleeve is sleeved on the base pipe and placed on the inner side of the hydraulic cylinder, the spring is installed on the inner side of the hydraulic cylinder and placed at the lower end of the claw spring sleeve, the hydraulic anchor sleeve is placed at the lower end of the spring, a hydraulic anchor is installed on the hydraulic anchor sleeve, a rubber cylinder is provided at the lower part of the hydraulic anchor sleeve, a cone is provided at the lower end of the hydraulic anchor sleeve, the cone, slips and fixed sleeve are sleeved on the base pipe in sequence from top to bottom, and a slide groove is provided on the lower joint. However, when the packer is lowered too long, since the packer itself does not have a fixing function, once a failure occurs, not only will the plugging fail, but the tool may also fall into the well accidentally. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a mechanical setting packer which has a simple structure and is convenient for sealing the oil pipe when in use, thereby improving the practicality of the device.

[0004] The utility model discloses a mechanical sealing packer, comprising a center pipe, a connecting assembly, an anchoring assembly, a pushing assembly and a sealing assembly. The connecting assembly is rotatably mounted on the top end of the center pipe, the anchoring assembly is mounted on the bottom of the center pipe, the pushing assembly is mounted on the inner bottom end of the center pipe, the pushing assembly is connected to the anchoring assembly, and the sealing assembly is mounted on the upper part of the center pipe. After the device is placed in a predetermined position through the connecting assembly, when pressure is applied from the lower part, the anchoring assembly is driven by the pushing assembly to press the device and the inner wall of the casing tighter and tighter, and the oil pipe is sealed by the sealing assembly. The simple structure makes it easy to seal the oil pipe during use, thereby improving the practicability of the device.

[0005] Preferably, the anchoring assembly includes a plurality of limit sliding columns, a plurality of cavas and a plurality of first push rods, the plurality of limit sliding columns are axially and evenly sealed and slidably installed on the outer wall of the central tube, the outer end of the limit sliding column is fixedly connected with a cava, the lower end of the inner wall of the cava is fixedly connected with a first push rod, and the first push rod is axially and evenly sealed and slidably installed on the lower outer wall of the central tube; when in use, the first push rod pushes the cava to contact the inner wall of the casing, and the tooth surface of the cava bites on the inner wall of the casing to anchor the entire equipment so as to anchor the entire pipe column.

[0006] Preferably, the pushing assembly includes a conical block, a plurality of limit sliders, a second push rod, a leather cup plate and a leather cup rubber cylinder, the conical block is sealingly and slidably mounted on the inner wall of the central tube, the outer wall of the conical block is axially evenly provided with a pushing slide groove, the limit slider is slidably mounted in the pushing slide groove, the limit slider is fixedly connected to the second push rod, the bottom end of the conical block is connected to the second push rod, the bottom end of the second push rod is connected to the leather cup plate, the lower outer edge of the leather cup plate is installed with a leather cup rubber cylinder, the maximum outer diameter of the leather cup rubber cylinder is larger than the inner diameter of the casing, and its material is elastic rubber; during the lowering process, since the maximum outer diameter of the leather cup rubber cylinder is larger than the inner diameter of the casing and its material is elastic rubber, it always slides closely against the inner wall of the casing, realizing the interference fit between the leather cup rubber cylinder and the inner wall of the casing, when there is pressure at the bottom, the leather cup rubber cylinder pushes the leather cup plate and the second push rod to move upward, pushing the conical block to move in the central tube, and pushing the cava through the limit slider and the second push rod, so that it is pressed tighter and tighter against the inner wall of the casing.

[0007] Preferably, the sealing assembly includes an upper sealing plate, a lower sealing plate, a telescopic tube and a sealing rubber cylinder. The upper sealing plate and the lower sealing plate are arranged in an upper and lower manner and installed on the upper inner wall of the central tube. A sealing cavity is formed between the upper sealing plate and the lower sealing plate. The sealing rubber cylinder is installed on the outer wall of the central tube of the upper sealing plate and the lower sealing plate bracket. The sealing rubber cylinder is connected to the sealing cavity. The middle part of the bottom of the lower sealing plate is connected with the telescopic tube. A channel is opened inside the conical block, the second push rod and the leather cup plate, and the input end of the telescopic tube is connected to the channel. The pressure below the leather cup plate enters the telescopic tube through the channel, then enters the sealing cavity, and then enters the sealing rubber cylinder, so that the sealing rubber cylinder and the inner wall of the sleeve are pressed tighter and tighter, thereby achieving pressure sealing.

[0008] Preferably, the connecting assembly includes a connecting head, a turntable and a limit swivel, the bottom end of the connecting head is fixedly connected to the top of the turntable, a spline groove is provided on the outer wall of the connecting head, a step is provided on the top of the center tube, a limit swivel groove is provided at the lower end of the step, the limit swivel is rotatably installed in the limit swivel groove, and the bottom end of the limit swivel is connected to the top of the turntable; when in use, it is connected to the required equipment through the connecting head, and the equipment is introduced into the oil pipe until it reaches the designated position.

[0009] Preferably, it also includes a rotating rod, a sealing plate, a sealing rotating plate and two reflux pipes, the bottom end of the rotating disk is fixedly connected with a rotating rod, the rotating rod rotates and passes through the top of the upper sealing plate and is fixedly connected to the sealing plate, the bottom end of the upper sealing plate is provided with a sealing rotating groove, the sealing rotating plate is rotatably installed in the sealing rotating groove, the bottom end of the sealing rotating plate is connected with the top of the sealing plate, the sealing plate and the upper sealing plate are correspondingly provided with a plurality of pressure relief holes, an outflow hole is provided on the outer wall of the central tube at the upper part of the upper sealing plate, the input ends of the two reflux pipes are connected with the output ends of two of the pressure relief holes, the reflux pipe passes through the upper sealing plate and the lower sealing plate, and the output end of the reflux pipe is located below the lower sealing plate; to unseal, only the connecting head needs to be rotated to drive the rotating disk to rotate, and the rotating disk drives the sealing plate to rotate through the rotating rod to align the pressure relief holes, and a part of the pressure is input to the bottom of the lower sealing plate through the reflux pipe to push the conical block to move downward, so that the slip is retracted, and the other part of the pressure is discharged through the outflow hole, so that the upper and lower pressures of the central tube are balanced, and the equipment can be pulled out.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: after the device is placed in a predetermined position through the connecting assembly, when there is pressure at the lower part, the pushing assembly drives the anchoring assembly to make the device and the inner wall of the casing become tighter and tighter, and the oil pipe is sealed by the sealing assembly. The simple structure makes it easy to seal the oil pipe during use, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] Figure 2 It is a schematic diagram of the axonometric structure of the utility model;

[0013] Figure 3 It is a front structural schematic diagram of the utility model;

[0014] Figure 4 It is a schematic diagram of the internal structure of the utility model;

[0015] Figure 5 It is a front cross-sectional structural schematic diagram of the utility model;

[0016] Markings in the attached drawings: 1. center tube; 2. limit sliding column; 3. slip; 4. first push rod; 5. conical block; 6. limit sliding block; 7. second push rod; 8. leather cup plate; 9. leather cup rubber cylinder; 10. upper sealing plate; 11. lower sealing plate; 12. telescopic tube; 13. sealing rubber cylinder; 14. connecting head; 15. turntable; 16. limit swivel; 17. rotating rod; 18. sealing plate; 19. sealing swivel plate; 20. reflux pipe. DETAILED DESCRIPTION

[0017] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0018] like Figures 1 to 5 As shown, a plurality of limit slides 2 are axially and evenly sealed and slidably installed on the outer wall of the central tube 1, the outer end of the limit slide 2 is fixedly connected with a slip 3, the lower end of the inner wall of the slip 3 is fixedly connected with a first push rod 4, the first push rod 4 is axially and evenly sealed and slidably installed on the lower outer wall of the central tube 1, the conical block 5 is sealed and slidably installed on the inner wall of the central tube 1, the outer wall of the conical block 5 is axially and evenly provided with a push slide groove, the limit slide 6 is slidably installed in the push slide groove, the limit slide 6 is fixedly connected to the first push rod 4, and the bottom end of the conical block 5 is connected with The second push rod 7, the bottom end of the second push rod 7 is connected to a leather cup plate 8, the lower outer edge of the leather cup plate 8 is installed with a leather cup rubber tube 9, the maximum outer diameter of the leather cup rubber tube 9 is greater than the inner diameter of the sleeve, and its material is elastic rubber, the upper sealing plate 10 and the lower sealing plate 11 are arranged up and down and installed on the upper inner wall of the central tube 1, and a sealing cavity is formed between the upper sealing plate 10 and the lower sealing plate 11, and the sealing rubber tube 13 is installed on the outer wall of the central tube 1 of the upper sealing plate 10 and the lower sealing plate 11 bracket, and the sealing rubber tube 13 is connected to the sealing cavity, and the middle of the bottom of the lower sealing plate 11 is connected to the extension The expansion tube 12, the conical block 5, the second push rod 7 and the leather cup plate 8 are provided with a channel, the input end of the expansion tube 12 is connected to the channel, the bottom end of the connector 14 is fixedly connected to the top of the turntable 15, a spline groove is provided on the outer wall of the connector 14, a step is provided on the top of the center tube 1, a limited rotation groove is provided at the lower end of the step, a limited rotation ring 16 is rotatably installed in the limited rotation groove, the bottom end of the limited rotation ring 16 is connected to the top of the turntable 15, and the bottom end of the turntable 15 is fixedly connected to a rotating rod 17, which rotates through the top fixed end of the upper sealing plate 10 A sealing plate 18 is fixedly connected, a sealing rotation groove is provided at the bottom end of the upper sealing plate 10, a sealing rotation plate 19 is rotatably installed in the sealing rotation groove, the bottom end of the sealing rotation plate 19 is connected to the top end of the sealing plate 18, a plurality of pressure relief holes are correspondingly provided on the sealing plate 18 and the upper sealing plate 10, an outflow hole is provided on the outer wall of the central tube 1 at the upper part of the upper sealing plate 10, the input ends of the two return pipes 20 are connected to the output ends of the two pressure relief holes, the return pipe 20 passes through the upper sealing plate 10 and the lower sealing plate 11, and the output end of the return pipe 20 is located at the lower end of the lower sealing plate 11;

[0019] When in use, it is connected to the required equipment through the connector 14, and the equipment is introduced into the oil pipe. When it reaches the specified position, during the lowering process, since the maximum outer diameter of the leather cup rubber cylinder 9 is larger than the inner diameter of the casing, and its material is elastic rubber, it always slides close to the inner wall of the casing, realizing the interference between the leather cup rubber cylinder 9 and the inner wall of the casing. When there is pressure at the bottom, the leather cup rubber cylinder 9 pushes the leather cup plate 8 and the second push rod 7 to move upward, and pushes the conical block 5 to move in the center pipe 1, and pushes the slip 3 through the limit slider 6 and the first push rod 4, so that it is pressed tighter and tighter with the inner wall of the casing, and the tooth surface of the slip 3 bites on the inner wall of the casing, so that the whole equipment Anchoring, in order to anchor the entire pipe column, the pressure below the leather cup plate 8 enters the telescopic tube 12 through the channel, and then enters the sealing cavity, and then enters the sealing rubber tube 13, so that the sealing rubber tube 13 and the inner wall of the casing are pressed tighter and tighter, thereby realizing pressure sealing. To unseal, you only need to rotate the connector 14 to drive the turntable 15 to rotate, and the turntable 15 drives the sealing plate 18 to rotate through the rotating rod 17 to align the pressure relief holes. Part of the pressure is input to the bottom of the lower sealing plate 11 through the return pipe 20 to push the conical block 5 downward, so that the slip 3 retracts, and the other part of the pressure is discharged through the outflow hole to balance the upper and lower pressures of the central pipe 1, and the equipment can be pulled out.

[0020] like Figures 1 to 5 As shown, a mechanical sealing packer of the utility model is connected with the required equipment through the connector 14 during operation, and the equipment is introduced into the oil pipe. When it reaches the designated position, during the lowering process, since the maximum outer diameter of the leather cup rubber cylinder 9 is larger than the inner diameter of the casing, and the material thereof is elastic rubber, it always slides close to the inner wall of the casing, thereby realizing the interference fit between the leather cup rubber cylinder 9 and the inner wall of the casing. When there is pressure at the lower part, the leather cup rubber cylinder 9 pushes the leather cup plate 8 and the second push rod 7 to move upward, and pushes the conical block 5 to move in the center pipe 1, and pushes the slip 3 through the limit slider 6 and the first push rod 4, and the first push rod 4 pushes the slip 3 to contact with the inner wall of the casing, and the slip 3 The tooth surface bites on the inner wall of the sleeve, making it press tighter and tighter with the inner wall of the sleeve. The pressure below the leather cup plate 8 enters the telescopic tube 12 through the channel, and then enters the sealing cavity, and then enters the sealing rubber cylinder 13, making the sealing rubber cylinder 13 and the inner wall of the sleeve press tighter and tighter, thereby realizing pressure sealing. To unseal, you only need to rotate the connector 14 to drive the turntable 15 to rotate. The turntable 15 drives the sealing plate 18 to rotate through the rotating rod 17 to align the pressure relief holes. Part of the pressure is input to the bottom of the lower sealing plate 11 through the return pipe 20 to push the conical block 5 downward, so that the slip 3 retracts, and the other part of the pressure is discharged through the outflow hole to balance the upper and lower pressures of the center tube 1, and the equipment can be pulled out.

[0021] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A mechanically set packer, characterized in that: The invention comprises a central tube (1), a connection assembly, an anchor assembly, a pushing assembly and a sealing assembly, wherein the connection assembly is rotatably mounted on the top of the central tube (1), the anchor assembly is mounted on the bottom of the central tube (1), the pushing assembly is mounted on the inner bottom end of the central tube (1), the pushing assembly is connected to the anchor assembly, and the sealing assembly is mounted on the top of the central tube (1).

2. A mechanically set packer according to claim 1, characterized in that: The anchoring assembly comprises a plurality of limit slides (2), a plurality of slips (3) and a plurality of first push rods (4); the plurality of limit slides (2) are axially and evenly sealed and slidably mounted on the outer wall of the central tube (1); the outer ends of the limit slides (2) are fixedly connected to the slips (3); the lower ends of the inner walls of the slips (3) are fixedly connected to the first push rods (4); and the first push rods (4) are axially and evenly sealed and slidably mounted on the lower outer wall of the central tube (1).

3. A mechanically set packer according to claim 2, characterized in that: The pushing assembly comprises a conical block (5), a plurality of limit sliders (6), a second push rod (7), a leather cup plate (8) and a leather cup rubber tube (9). The conical block (5) is sealingly and slidably mounted on the inner wall of the central tube (1). The outer wall of the conical block (5) is axially and evenly provided with a pushing slide groove. The limit slider (6) is slidably mounted in the pushing slide groove. The limit slider (6) is fixedly connected to the first push rod (4). The bottom end of the conical block (5) is connected to the second push rod (7). The bottom end of the second push rod (7) is connected to the leather cup plate (8). The lower outer edge of the leather cup plate (8) is mounted with a leather cup rubber tube (9). The maximum outer diameter of the leather cup rubber tube (9) is greater than the inner diameter of the sleeve. The material of the leather cup rubber tube (9) is elastic rubber.

4. A mechanically set packer according to claim 3, characterized in that: The sealing assembly comprises an upper sealing plate (10), a lower sealing plate (11), a telescopic tube (12) and a sealing rubber tube (13). The upper sealing plate (10) and the lower sealing plate (11) are arranged in a vertical arrangement and mounted on the upper inner wall of the central tube (1). A sealing cavity is formed between the upper sealing plate (10) and the lower sealing plate (11). The sealing rubber tube (13) is mounted on the outer wall of the central tube (1) of the upper sealing plate (10) and the lower sealing plate (11) brackets. The sealing rubber tube (13) is connected to the sealing cavity. The bottom middle of the lower sealing plate (11) is connected to the telescopic tube (12). A channel is provided inside the conical block (5), the second push rod (7) and the leather cup plate (8). The input end of the telescopic tube (12) is connected to the channel.

5. A mechanically set packer according to claim 1, characterized in that: The connection assembly comprises a connection head (14), a rotating disk (15) and a limit rotating ring (16); the bottom end of the connection head (14) is fixedly connected to the top of the rotating disk (15); a spline groove is provided on the outer wall of the connection head (14); a step is provided on the top of the central tube (1); a limit rotating groove is provided at the lower end of the step; the limit rotating ring (16) is rotatably installed in the limit rotating groove; and the bottom end of the limit rotating ring (16) is connected to the top of the rotating disk (15).

6. A mechanically set packer according to claim 5, characterized in that: The utility model also comprises a rotating rod (17), a sealing plate (18), a sealing rotating plate (19) and two return pipes (20); the bottom end of the rotating disk (15) is fixedly connected to the rotating rod (17); the rotating rod (17) rotates and penetrates the top end of the upper sealing plate (10) and is fixedly connected to the sealing plate (18); the bottom end of the upper sealing plate (10) is provided with a sealing rotating groove; the sealing rotating plate (19) is rotatably installed in the sealing rotating groove; the bottom end of the sealing rotating plate (19) is connected to the top end of the sealing plate (18); a plurality of pressure relief holes are correspondingly provided on the sealing plate (18) and the upper sealing plate (10); an outflow hole is provided on the outer wall of the central tube (1) at the upper part of the upper sealing plate (10); the input ends of the two return pipes (20) are connected to the output ends of two of the pressure relief holes; the return pipe (20) penetrates the upper sealing plate (10) and the lower sealing plate (11); the output end of the return pipe (20) is located at the lower end of the lower sealing plate (11).

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