An adjustable packer for oil wells used in oil production

Abstract

The present application discloses an adjustable oil well packer for oil well exploitation, which relates to the technical field of packers, and comprises a shell, a sealing pressure plate, a sealing rubber block, and a regulating component, wherein the regulating component comprises a first driving rod, a driving disc, a clutch disc, a control disc, and a second driving rod, wherein the clutch disc is configured to be composed of a plurality of fan-shaped discs, and the plurality of fan-shaped discs can independently move vertically. When the sealing rubber block is deformed to fit the inner wall of the oil pipe, if the driving disc continues to rotate, and the force tooth ring or the latch tooth has local wear, or debris is stuck between the force tooth ring and the latch tooth, then the plurality of fan-shaped discs that can independently move vertically can independently move according to the above situation, disperse the local pressure, and extend the service life of the driving disc or the fan-shaped disc, and when a certain fan-shaped disc or the latch tooth is damaged, it can be replaced separately, thereby reducing the maintenance cost.

Description

Technical Field

[0001] The invention relates to the technical field of packers, in particular to an adjustable packer for oil wells used in petroleum development. Background Art

[0002] Packers are commonly used in oil pipelines. Packers refer to downhole tools connected to the downhole pipe string and used to isolate the annular space between the oil pipe and the oil and gas well casing or the open hole wall. They are one of the commonly used accessories in the construction and use of oil pipelines. However, as for the existing oil pipeline packers, they do not have a limiting structure for the deformation pressure of the rubber block when plugging the oil pipe, so that the rubber block will be damaged and deformed when subjected to a large pressure, affecting the sealing effect. The rubber block is also easy to squeeze the oil pipe after excessive deformation, and the stability is poor. In addition, the packer needs to pull the joystick in sequence when installing, which is cumbersome, difficult to install, poor in flexibility, and not very practical.

[0003] The Chinese invention patent with publication number CN116357258A in the prior art discloses a petroleum oil pipe packer that is easy to install, including a sealing pressure plate, which is plugged into the bottom of the installation shell, solving the problem that the existing packer has no limiting structure for the deformation pressure of the rubber block, so that the rubber block will be damaged and deformed when subjected to a large pressure, affecting the sealing effect, and the rubber block is also easy to squeeze the petroleum oil pipe after excessive deformation, and the stability is poor. The pressure of the device regulating component is flexibly converted into the deformation pressure of the sealing rubber block, which is easy to install and disassemble. At the same time, the regulating component also has the function of limiting the deformation pressure of the sealing rubber block, thereby avoiding the phenomenon of damaging the sealing rubber block or damaging the oil pipe due to excessive pressure. The use is stable, and the size of the limiting force can be adjusted according to actual use requirements, and can be adapted to be assembled with sealing rubber blocks of different types, specifications, and materials.

[0004] When in use, the above-mentioned device can control the rubber block from undergoing large-scale deformation and squeezing the oil pipe while the rubber block is under pressure to maintain a sealed state. It can limit the deformation pressure of the rubber block. However, if the operator adjusts the limiting force of the rubber block and does not redefine the injection amount of the pressure liquid, the pressure liquid is injected too much, and the two force tooth rings may have different flatness after long-term friction. In this case, although the pressure of the rubber block can be limited by the regulating component, the pressure and friction force on the clutch disc in the regulating component are relatively large, which can easily affect the service life of the clutch disc. Summary of the invention

[0005] The embodiment of the present application provides an adjustable oil well packer for oil development, which solves the problem in the prior art that when pressure liquid is injected, the clutch disc in the regulating assembly is subjected to large pressure and friction, which easily affects the service life of the clutch disc.

[0006] The embodiment of the present application provides an adjustable oil well packer for oil development, including a shell, a sealing pressure plate, and a sealing rubber block, wherein the sealing pressure plate is slidably connected to the shell, the sealing rubber block is annular, and the sealing rubber block is sleeved on the shell, one end of the sealing rubber block is fixed to the shell, and the other end is fixed to the sealing pressure plate, and also includes a regulating component, wherein the regulating component includes a first driving rod, a driving disk, a clutch disk, a control disk, and a second driving rod, wherein the first driving rod, the driving disk, the clutch disk, the control disk, and the second driving rod are coaxial, and the first driving rod is slidably mounted on the shell The driving disk is rotatably connected in the shell and the first driving rod passes through the driving disk, the control disk is slidably connected in the shell, the clutch disk is installed on the control disk, the clutch disk is located between the driving disk and the control disk, the clutch disk is cylindrical as a whole, and the clutch disk is composed of a plurality of fan-shaped disks, each fan-shaped disk is equipped with a plurality of latch teeth on the side facing the driving disk, a force tooth ring is installed on the side facing the fan-shaped disk, and the latch teeth on the plurality of fan-shaped disks can be engaged when they contact the force tooth ring, the second driving rod is rotatably connected inside the shell, and the second driving rod can drive the sealing pressure plate to slide.

[0007] Furthermore, two connecting rods are fixed at the bottom of each fan-shaped disk, and a mounting ring is rotatably connected to the control disk. The end of the connecting rod away from the fan-shaped plate is inserted into the mounting ring and is slidably connected to the mounting ring. A pressure spring is sleeved on the connecting rod, one end of the pressure spring is in contact with the fan-shaped plate, and the other end is in contact with the mounting ring. The fan-shaped disk is contacted with the driving disk through the elastic force of the pressure spring. When the driving disk rotates and the fan-shaped disk is in contact with the driving disk, the fan-shaped disk can be driven to rotate through the cooperation of the force tooth ring and the latch teeth.

[0008] Furthermore, the number of the fan-shaped disks is four, and the four fan-shaped disks are arranged in a circle to form a circular ring as a whole, wherein the teeth on two fan-shaped disks are chamfered, and the elastic force of the pressure spring at the bottom of the fan-shaped disk with guide circles on the teeth is smaller than the elastic force of the pressure spring at the bottom of the other two fan-shaped disks.

[0009] Furthermore, the sector-shaped discs with guide circles on the two latching teeth are arranged alternately with the other two sector-shaped discs.

[0010] Furthermore, a connection capsule is installed between two adjacent sector disks, and the side walls of the connection capsule are respectively adhered to the side walls of the two adjacent sector disks.

[0011] Furthermore, the connecting bag is filled with lubricating liquid, and a plurality of liquid outlet holes are opened on the top of the connecting bag. When the connecting bag is under normal pressure, the liquid outlet holes are in a closed state. When the fan-shaped disk is squeezed downward and the pressure spring is compressed, the fan-shaped disk is reset by the elastic force of the pressure spring. Due to the different elastic forces of the pressure springs at the bottom of the two adjacent fan-shaped disks, a height difference is generated when the two adjacent fan-shaped disks are reset, which can stretch the connecting bag and open the liquid outlet holes. After the liquid outlet holes are opened, the lubricating liquid can flow out.

[0012] Furthermore, the number of the liquid outlet holes is three to seven.

[0013] Furthermore, the apertures of the plurality of liquid outlet holes gradually decrease from the center of the connection capsule to the two ends.

[0014] Furthermore, a piston cavity is provided in the shell, and a pressure piston is installed in the piston cavity. The pressure piston is a regular hexagon, and the bottom end of the pressure piston is fixedly connected to the first driving rod. The first driving rod is provided with a threaded groove, and a driving block is installed in the driving disk, and the driving block is slidably connected to the threaded groove of the first driving rod. A slider is installed on each of the fan-shaped disks, and a sliding groove matched with the slider is provided on the second driving rod. Through the cooperation of the slider and the sliding groove, the fan-shaped disk can slide vertically on the second driving rod, and a receiving groove for the first driving rod to enter is provided in the second driving rod. A spiral track is also installed on the second driving rod, and the second driving rod passes through the sealing pressure plate, and the sealing pressure plate is provided with a matching groove matched with the spiral track. When the second driving rod rotates, it can drive the sealing pressure plate to move vertically on the shell.

[0015] Furthermore, a track block is installed on the side wall of the control panel, and a threaded section is installed on the side of the track block away from the control panel. An adjusting knob is also rotatably connected to the shell, and an internal thread is provided in the adjusting knob. The internal thread of the adjusting knob is connected to the threaded section through threaded cooperation. When the adjusting knob is rotated, the control panel can be driven to move vertically through the track block.

[0016] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0017] Firstly, the clutch disc of the present invention is configured to be composed of a plurality of sector discs, and the plurality of sector discs can independently move vertically. When the sealing rubber block is deformed to fit the inner wall of the oil pipe, if the driving disc continues to rotate and the force tooth ring or the latch teeth are partially worn, or debris is stuck between the force tooth ring and the latch teeth, the plurality of sector discs that can independently move vertically can independently move according to the above situation to disperse the local pressure, thereby extending the service life of the driving disc or the sector disc, and when a sector disc or the latch teeth is damaged, it can be replaced separately, thereby reducing the maintenance cost.

[0018] Secondly, the invention reduces the friction with the driving disk by providing guide circles on the teeth on some of the sector disks and a smaller pressure spring force, thereby slowing down the wear rate, and the other two sector disks are used to keep the driving disk and the sector disk from transmitting power so that the sealing rubber block has sufficient deformation, thereby reducing friction and evenly distributing wear, thereby extending the service life of the entire clutch disk and the driving disk, and the differentiated pressure spring force and staggered sector disks make the torque during the rotation process more stable, reducing sudden impact and vibration, and the type, quantity and spring force of the sector disks can be flexibly adjusted according to different working environments and requirements to achieve the best balance between performance and life;

[0019] Thirdly, in the present invention, after the sealing rubber block is deformed and fits the inner wall of the oil pipe, the driving disc continues to rotate to make the fan-shaped disc move downward. After the fan-shaped disc is squeezed and moved downward and the pressure spring is compressed, the fan-shaped disc is reset by the elastic force of the pressure spring. Due to the different elastic forces of the pressure springs at the bottom of the two adjacent fan-shaped discs, a height difference is generated when the two adjacent fan-shaped discs are reset, which can stretch the connecting capsule and open the liquid outlet hole. At this time, the lubricating liquid can flow to the fan-shaped disc that resets more slowly. As the driving disc continues to rotate, the lubricating liquid flows out more and is applied more evenly, which significantly reduces the friction and wear between the driving disc and the clutch disc, prolongs the service life of the equipment, and realizes automatic lubrication without the need for additional maintenance operations.

[0020] Fourthly, the present invention increases the coating range of the lubricant by gradually reducing the aperture of the liquid outlet from the center of the connecting capsule to the two ends, and maximizes the retention of the lubricant on the fan-shaped disk, thereby improving the utilization rate of the lubricant and reducing the waste of the lubricant caused by the lubricant flowing away from the edge of the fan-shaped disk, thereby avoiding affecting other components in the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 A sectional view of the three-dimensional structure of the present invention in a first working state;

[0023] Figure 3 A sectional view of the three-dimensional structure of the present invention in a second working state;

[0024] Figure 4 It is a three-dimensional structure explosion diagram of the control component of the present invention;

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the clutch disc in the second embodiment of the present invention;

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the clutch disc in the first working state in the third embodiment of the present invention;

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the clutch disc in the second working state in the third embodiment of the present invention;

[0028] Figure 8 It is a schematic diagram of the three-dimensional structure of the clutch disc in the fourth embodiment of the present invention.

[0029] In the figure: 100, housing; 110, sealing pressure plate; 120, sealing rubber block; 130, piston chamber; 140, pressure piston;

[0030] 200, regulating component; 210, first driving rod; 211, threaded groove; 220, driving disk; 230, control disk; 231, mounting ring; 232, track block; 233, threaded segment; 240, second driving rod; 241, slide groove; 242, spiral track; 250, adjusting knob; 300, clutch disk; 310, sector disk; 311, latching tooth; 312, connecting rod; 313, pressure spring; 314, slider; 320, connecting capsule; 321, liquid outlet. DETAILED DESCRIPTION

[0031] To facilitate the understanding of the present invention, the present application will be described more comprehensively below with reference to the relevant drawings; the drawings show preferred embodiments of the present invention, but the present invention 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 enable a more thorough and comprehensive understanding of the disclosed content of the present invention.

[0032] It should be noted that the terms “vertical”, “horizontal”, “up”, “down”, “left”, “right” and similar expressions used in this document are only for illustrative purposes and do not represent the only implementation method.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs; the terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more related listed items.

[0034] Embodiment 1: Figure 1-Figure 4As shown, the embodiment of the present application provides an adjustable oil well packer for petroleum development, including a shell 100, a sealing pressure plate 110, and a sealing rubber block 120, wherein the sealing pressure plate 110 is slidably connected to the shell 100, the sealing rubber block 120 is annular, and the sealing rubber block 120 is sleeved on the shell 100, one end of the sealing rubber block 120 is fixed to the shell 100, and the other end is fixed to the sealing pressure plate 110, and also includes a regulating component 200, wherein the regulating component 200 includes a first driving rod 210, a driving disk 220, a clutch disk 300, a control disk 230, and a second driving rod 240, wherein the first driving rod 210, the driving disk 220, the clutch disk 300, the control disk 230, and the second driving rod 240 are coaxial, and the first driving rod 210 is slidably mounted on the shell 10 0, the driving disk 220 is rotatably connected in the shell 100 and the first driving rod 210 passes through the driving disk 220, the control disk 230 is slidably connected in the shell 100, the clutch disk 300 is installed on the control disk 230, the clutch disk 300 is located between the driving disk 220 and the control disk 230, the clutch disk 300 is cylindrical as a whole, and the clutch disk 300 is composed of a plurality of fan-shaped disks 310, each of the fan-shaped disks 310 is equipped with a plurality of latch teeth 311 on the side facing the driving disk 220, the driving disk 220 is equipped with a force tooth ring on the side facing the fan-shaped disk 310, and the latch teeth 311 on the plurality of fan-shaped disks 310 can be engaged when in contact with the force tooth ring, the second driving rod 240 is rotatably connected inside the shell 100, and the second driving rod 240 can drive the sealing pressure plate 110 to slide.

[0035] Furthermore, two connecting rods 312 are fixed to the bottom of each of the fan-shaped disks 310, and a mounting ring 231 is rotatably connected to the control disk 230. The end of the connecting rod 312 away from the fan plate is inserted into the mounting ring 231 and is slidably connected to the mounting ring 231. A pressure spring 313 is sleeved on the connecting rod 312, and one end of the pressure spring 313 contacts the fan plate, and the other end contacts the mounting ring 231. The elastic force of the pressure spring 313 makes the fan disk 310 contact the driving disk 220. When the driving disk 220 rotates and the fan disk 310 contacts the driving disk 220, the fan disk 310 can be driven to rotate through the cooperation of the force tooth ring and the latch tooth 311.

[0036] Furthermore, the housing 100 is further provided with a piston chamber 130, in which a pressure piston 140 is installed, the pressure piston 140 is a regular hexagon, the bottom end of the pressure piston 140 is fixedly connected to the first driving rod 210, the first driving rod 210 is provided with a thread groove 211, the driving disk 220 is provided with a driving block, and the driving block is slidably connected to the thread groove 211 of the first driving rod 210, each of the sector disks 310 is provided with a slider 314, and the second driving rod 240 is provided with a slider 314. The adapted slide groove 241 can enable the fan-shaped disk 310 to slide vertically on the second drive rod 240 through the cooperation of the slider 314 and the slide groove 241. A receiving groove for the first drive rod 210 to enter is provided in the second drive rod 240. A spiral track 242 is also installed on the second drive rod 240, and the second drive rod 240 passes through the sealing pressure plate 110. A matching groove adapted to the spiral track 242 is provided on the sealing pressure plate 110. When the second drive rod 240 rotates, it can drive the sealing pressure plate 110 to move vertically on the shell 100.

[0037] Furthermore, a track block 232 is installed on the side wall of the control panel 230, and a threaded section 233 is installed on the side of the track block 232 away from the control panel 230. The housing 100 is also rotatably connected with an adjusting knob 250, and an internal thread is provided in the adjusting knob 250, and the internal thread of the adjusting knob 250 is connected to the threaded section 233 through threaded matching. When the adjusting knob 250 is rotated, the control panel 230 can be driven to move vertically through the track block 232.

[0038] When using the device, after the housing 100 is hoisted to the predetermined position of the oil pipe, pressure liquid is injected into the piston chamber 130. With the injection of pressure liquid, the pressure piston 140 drives the first driving rod 210 to move downward. When the first driving rod 210 moves downward, it drives the driving disk 220 to rotate. At this time, the pressure of the pressure spring 313 causes the fan-shaped disk 310 to contact the driving disk 220, and then the fan-shaped disk 310 and the second driving rod 240 slidably connected to the fan-shaped disk 310 are driven to rotate through the driving disk 220. After the second driving rod 240 rotates, it drives the sealing pressure plate 110 to move downward and provide sealing. The pressure of the rubber block 120 causes the sealing rubber block 120 to deform and expand and seal the oil pipe. This is the prior art and will not be elaborated on. When the sealing rubber block 120 is deformed to its maximum deformation degree or the sealing rubber block 120 is already tightly fitted with the inner wall of the oil pipe, the pressure that continues to drive the sealing rubber block 120 to deform is greater than the elastic force of the pressure spring 313. At this time, if the driving disk 220 continues to rotate, it will drive the fan disk 310 to move downward and overcome the elastic force of the pressure spring 313, thereby preventing the sealing rubber block 120 from being excessively deformed and damaging the oil pipe due to excessive pressure.

[0039] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0040] The clutch disc 300 is configured to be composed of a plurality of fan-shaped discs 310, and the plurality of fan-shaped discs 310 can independently move vertically. When the sealing rubber block 120 is deformed to fit the inner wall of the oil pipe, if the driving disc 220 continues to rotate, and the force tooth ring or the latch tooth 311 has local wear, or debris is stuck between the force tooth ring and the latch tooth 311, then the plurality of fan-shaped discs 310 that can independently move vertically can independently move according to the above situation to disperse the local pressure and extend the service life of the driving disc 220 or the fan-shaped disc 310. When a certain fan-shaped disc 310 or the latch tooth 311 is damaged, it can be replaced individually, thereby reducing maintenance costs.

[0041] Embodiment 2: In order to reduce the friction and pressure between the driving disk 220 and the sector disk 310 when the driving disk 220 continues to rotate and prolong its service life while ensuring that the driving disk 220 and the sector disk 310 can transmit power so that the sealing rubber block 120 has sufficient deformation, as shown in FIG. Figure 5 As shown, further improvements are made to the first embodiment:

[0042] Furthermore, the number of the fan-shaped disks 310 is four, and the four fan-shaped disks 310 are arranged in a circle to form a circular ring as a whole, wherein the latch teeth 311 on two fan-shaped disks 310 have chamfers, and the elastic force of the pressure spring 313 at the bottom of the fan-shaped disk 310 with a guide circle on the latch teeth 311 is smaller than the elastic force of the pressure spring 313 at the bottom of the other two fan-shaped disks 310.

[0043] Furthermore, the sector-shaped discs 310 with guide circles on the two latching teeth 311 are arranged alternately with the other two sector-shaped discs 310 .

[0044] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0045] By having guide circles on the latch teeth 311 on some of the sector disks 310 and smaller spring forces of the pressure springs 313, the friction with the drive disk 220 is reduced, thereby slowing down the wear rate. The other two sector disks 310 maintain the drive disk 220 and the sector disk 310 being able to transmit power so that the sealing rubber block 120 has sufficient deformation degree, thereby extending the service life of the entire clutch disk 300 and the drive disk 220 by reducing friction and evenly distributing wear. The differentiated spring forces of the pressure springs 313 and the staggered sector disks 310 make the torque during rotation more stable, reducing sudden impacts and vibrations. According to different working environments and requirements, the type, quantity and spring forces of the sector disks 310 can be flexibly adjusted to achieve the best balance between performance and life.

[0046] Embodiment 3: In order to further reduce the friction generated by the driving disc 220 continuing to rotate after the sealing rubber block 120 deforms and fits the inner wall of the oil pipe, Figure 6-Figure 7 As shown, further improvements are made to the second embodiment:

[0047] Furthermore, a connection capsule 320 is installed between two adjacent sector-shaped disks 310 , and the side walls of the connection capsule 320 are respectively adhered to the side walls of the two adjacent sector-shaped disks 310 .

[0048] Furthermore, the connecting capsule 320 is filled with lubricating liquid, and a plurality of liquid outlet holes 321 are provided on the top of the connecting capsule 320. When the connecting capsule 320 is under normal pressure, the liquid outlet holes 321 are in a closed state to prevent the outflow of lubricating liquid from affecting the normal transmission of the driving disk 220 and the fan-shaped disk 310. When the fan-shaped disk 310 is squeezed and moved downward and the pressure spring 313 is compressed, the fan-shaped disk 310 is reset by the elastic force of the pressure spring 313. Due to the different elastic forces of the pressure springs 313 at the bottom of the two adjacent fan-shaped disks 310, a height difference is generated when the two adjacent fan-shaped disks 310 are reset, which can stretch the connecting capsule 320 and open the liquid outlet holes 321. After the liquid outlet holes 321 are opened, the lubricating liquid can flow out. When the device is used up, the shell 100 can be manually opened to replenish the lubricating liquid through the liquid outlet holes 321, and the residual lubricating liquid on the driving disk 220 and the fan-shaped disk 310 can be cleaned.

[0049] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0050] When the sealing rubber block 120 is deformed to fit the inner wall of the oil pipe, the driving disk 220 continues to rotate to move the fan disk 310 downward. After the fan disk 310 is squeezed downward and the pressure spring 313 is compressed, the fan disk 310 is reset by the elastic force of the pressure spring 313. Due to the different elastic forces of the pressure springs 313 at the bottom of the two adjacent fan disks 310, a height difference will be generated when the two adjacent fan disks 310 are reset, which can stretch the connecting capsule 320 and open the liquid outlet hole 321. At this time, the lubricating fluid can flow to the fan disk 310 that resets more slowly. As the driving disk 220 continues to rotate, the lubricating fluid flows out more and is applied more evenly, which significantly reduces the friction and wear between the driving disk 220 and the clutch disk 300, extends the service life of the equipment, and realizes automatic lubrication without the need for additional maintenance operations.

[0051] Embodiment 4: To prevent the lubricant from flowing out, it may flow away from the edge of the sector disk 310, causing waste of lubricant and affecting other components. In order to avoid the above problems, as Figure 8 As shown, further improvements are made to the third embodiment:

[0052] Furthermore, the number of the liquid outlet holes 321 is three to seven.

[0053] Furthermore, the diameters of the plurality of liquid outlet holes 321 gradually decrease from the center of the connecting capsule 320 to the two ends.

[0054] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0055] By gradually reducing the aperture of the liquid outlet 321 from the center of the connecting capsule 320 to the two ends, the coating range of the lubricant is increased, and the lubricant is retained on the fan disk 310 to the maximum extent, thereby improving the utilization rate of the lubricant and reducing the waste of the lubricant caused by the lubricant flowing away from the edge of the fan disk 310, thereby avoiding affecting other components in the housing 100.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An adjustable oil well packer for oil well development, comprising a housing (100), a sealing pressure plate (110), and a sealing rubber block (120), wherein the sealing pressure plate (110) is slidably connected to the housing (100), the sealing rubber block (120) is in a circular ring shape, and the sealing rubber block (120) is sleeved on the housing (100), one end of the sealing rubber block (120) is fixed to the housing (100), and the other end is fixed to the sealing pressure plate (110), characterized in that: The invention also comprises a regulating component (200), wherein the regulating component (200) comprises a first driving rod (210), a driving disk (220), a clutch disk (300), a control disk (230) and a second driving rod (240), wherein the first driving rod (210), the driving disk (220), the clutch disk (300), the control disk (230) and the second driving rod (240) are coaxial, wherein the first driving rod (210) is slidably mounted in the housing (100), the driving disk (220) is rotatably connected in the housing (100) and the first driving rod (210) passes through the driving disk (220), and the control disk (230) is slidably connected to the housing (100). In the housing (100), the clutch disc (300) is mounted on the control disc (230), the clutch disc (300) is located between the drive disc (220) and the control disc (230), the clutch disc (300) is cylindrical as a whole, and the clutch disc (300) is composed of a plurality of sector discs (310), each sector disc (310) is provided with a plurality of latching teeth (311) on one side facing the drive disc (220), a force tooth ring is provided on one side of the drive disc (220) facing the sector disc (310), and the latching teeth (311) on the plurality of sector discs (310) can be engaged with the force tooth ring when in contact, and the second drive rod (240) ) is rotatably connected inside the housing (100), and the second driving rod (240) can drive the sealing pressure plate (110) to slide; two connecting rods (312) are fixed to the bottom of each of the fan-shaped disks (310), and a mounting ring (231) is rotatably connected to the control disk (230), and one end of the connecting rod (312) away from the fan-shaped plate is inserted into the mounting ring (231) and is slidably connected to the mounting ring (231), and a pressure spring (313) is sleeved on the connecting rod (312), one end of the pressure spring (313) is in contact with the fan-shaped plate, and the other end is in contact with the mounting ring (231), and the elastic force of the pressure spring (313) causes the fan-shaped disk (310) to slide. 10) abutting against the driving disk (220), when the driving disk (220) rotates and the sector disk (310) abuts against the driving disk (220), the sector disk (310) can be driven to rotate through the cooperation of the force tooth ring and the latching teeth (311); the number of the sector disks (310) is four, and the four sector disks (310) are arranged in a circular row to form a circular ring as a whole, wherein the latching teeth (311) on two sector disks (310) have chamfers, and the elastic force of the pressure spring (313) at the bottom of the sector disk (310) with a guide round on the latching teeth (311) is smaller than the elastic force of the pressure spring (313) at the bottom of the other two sector disks (310); A connection capsule (320) is installed between two adjacent sector-shaped disks (310), and the side walls of the connection capsule (320) are respectively adhered to the side walls of the two adjacent sector-shaped disks (310); The connection capsule (320) is filled with lubricating liquid, and a plurality of liquid outlet holes (321) are provided at the top of the connection capsule (320). When the connection capsule (320) is in a normal pressure state, the liquid outlet holes (321) are in a closed state. When the sector disk (310) is squeezed and moved downward and the pressure spring (313) is compressed, the sector disk (310) is reset by the elastic force of the pressure spring (313). Since the elastic forces of the pressure springs (313) at the bottoms of two adjacent sector disks (310) are different, a height difference is generated when the two adjacent sector disks (310) are reset, which can stretch the connection capsule (320) and open the liquid outlet holes (321). After the liquid outlet holes (321) are opened, the lubricating liquid can be allowed to flow out.

2. The oil well adjustable packer for oil well development according to claim 1, characterized in that: The sector-shaped discs (310) with guide circles on the two latch teeth (311) are arranged alternately with the other two sector-shaped discs (310).

3. The adjustable oil well packer for oil well development according to claim 2, characterized in that: The number of the liquid outlet holes (321) is three to seven.

4. The oil well adjustable packer for oil well development according to claim 3, characterized in that: The diameters of the plurality of liquid outlet holes (321) gradually decrease from the center of the connecting capsule (320) to the two ends.

5. The oil well adjustable packer for oil well development according to claim 1, characterized in that: The housing (100) is further provided with a piston chamber (130), a pressure piston (140) is installed in the piston chamber (130), the pressure piston (140) is a regular hexagon, the bottom end of the pressure piston (140) is fixedly connected to the first driving rod (210), the first driving rod (210) is provided with a thread groove (211), a driving block is installed in the driving disk (220), and the driving block is slidably connected to the thread groove (211) of the first driving rod (210), each of the sector disks (310) is provided with a slider (314), and the second driving rod (240) is provided with a slider adapted to the slider (314). The slide groove (241) can make the sector disk (310) slide vertically on the second drive rod (240) through the cooperation of the slider (314) and the slide groove (241); the second drive rod (240) is provided with a receiving groove for the first drive rod (210) to enter; the second drive rod (240) is also provided with a spiral track (242); the second drive rod (240) passes through the sealing pressure plate (110); the sealing pressure plate (110) is provided with a matching groove adapted to the spiral track (242); when the second drive rod (240) rotates, it can drive the sealing pressure plate (110) to move vertically on the housing (100).

6. The oil well adjustable packer for oil well development according to claim 1, characterized in that: A track block (232) is mounted on the side wall of the control panel (230), and a threaded section (233) is mounted on the side of the track block (232) away from the control panel (230). An adjusting knob (250) is also rotatably connected to the housing (100), and an internal thread is provided in the adjusting knob (250). The internal thread of the adjusting knob (250) is threadably connected to the threaded section (233) for rotational adjustment.

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