Remote control type packer for oil exploitation

Abstract

The invention provides a remote control type packer for oil exploitation, and belongs to the technical field of underground equipment for oil exploitation, an expansion type packer body comprises a central pipe, a rotary sleeve is screwed in the central pipe, a remote control module is arranged outside the central pipe, and a pipeline is arranged at the upper end of the expansion type packer body. A stopping unit is arranged on the outer wall of the upper end of the expanding packer body, a connecting unit is arranged on the outer wall of the pipeline, the stopping unit comprises a connecting ring A, a plurality of lead screws are clamped in the connecting ring A, one side of each lead screw is fixedly connected with a rotating disc A, a hoop cylinder is screwed on the peripheral wall of each lead screw, the other side of each lead screw is fixedly connected with a cone frustum, and a vertical embedding opening is reserved in each hoop cylinder. A restraining rod A is movably arranged in the embedding opening, and a rotating disc B is arranged on the side of the rotating disc A. The problems that time and labor are consumed in butt joint of an expansion type packer and an oil pipe of an existing packer, and the packer and the oil pipe are inconvenient to install are solved.

Description

Technical Field

[0001] This invention belongs to the technical field of downhole equipment for oil extraction, specifically relating to a remotely controlled packer for oil extraction. Background Technology

[0002] Packers are flexible sealing elements used to seal the annular space between the tubing string and the wellbore, as well as between tubing strings, and to isolate the producing layer in order to control fluid production (injection) and protect the casing. They are important tools for oil and gas field development, providing effective mechanical means for the normal production of oil and gas wells and the smooth implementation of various downhole processes, and occupy a very important position in the exploration and development of oil and gas fields.

[0003] Existing technology CN111411916B discloses a remotely controlled expandable packer, including an upper connector and a lower connector connected by a packer body. The packer body includes a central tube and a rotating sleeve rotatably disposed within the central tube. The central axis of the rotating sleeve is collinear with the central axis of the central tube. The rotating sleeve has a first inlet port, and the central tube has a second inlet port. The central axes of the first and second inlet ports lie in the same plane of the rotating sleeve's cross-section. A rotating device is disposed outside the central tube to drive the rotating sleeve to rotate and connect the first and second inlet ports. The rotating device includes a connected drive device and a power transmission device. The power transmission device passes through the central tube and is connected to the rotating sleeve. A remote control device is connected to the drive device. The connection between this expandable packer and the tubing is mostly achieved using a threaded connection. During the connection process, repeated rotation of the packer or tubing is required to achieve a tight fit, which is time-consuming and labor-intensive, and inconvenient for the installation of the packer and tubing. Summary of the Invention

[0004] This invention provides a remotely controlled packer for oil extraction, which aims to solve the problems of time-consuming and labor-intensive connection between existing packer expansion packers and tubing, and the inconvenience of packer and tubing installation.

[0005] This invention provides a remotely controlled packer for oil extraction. The expandable packer body includes a central tube, a rotating sleeve screwed into the central tube, and a remote control module disposed outside the central tube. The remote control module includes: a microprocessor unit for receiving digital electrical signals, identifying, judging, processing, and generating corresponding control signals; an A / D conversion unit electrically connected to the microprocessor unit for converting analog electrical signals into digital signals; an acoustic-to-electrical conversion unit for receiving signals and converting them into analog electrical signals; a ground control system electrically connected to the acoustic-to-electrical conversion unit for sending signals to the acoustic-to-electrical conversion unit; and a drive unit electrically connected to the microprocessor unit for receiving control signals from the microprocessor unit. The drive unit is equipped with an automatic switch electrically connected to the microprocessor unit. The power supply unit supplies power to the entire remote control module. A pipe is installed on the upper end of the expansion packer body. A stop unit is installed on the outer wall of the upper end of the expansion packer body. A connecting unit is installed on the outer wall of the pipe. The stop unit includes a connecting ring A, in which several lead screws are engaged. One side of the lead screw is fixed to a rotating disk A. A hoop is threaded onto the outer peripheral wall of the lead screw. The other side of the lead screw is fixed to a truncated cone. A vertical fitting interface is reserved on the hoop. A constraint rod A is movably installed in the fitting interface. A rotating disk B is installed on the side of rotating disk A. Several teeth are reserved on the outer peripheral walls of both rotating disk A and rotating disk B, and they are connected to each other through the teeth. A constraint rod B is fixed to rotating disk B. Several constraint openings are reserved on the wall of connecting ring A. Connecting ring B is fixed to connecting ring A. A connecting rod is screwed into connecting ring B. One side of the connecting rod is fixed to the constraint disk.

[0006] Furthermore, the inner wall of the connecting ring A is fixedly connected to the outer wall of the expansion packer body, one side of the constraint rod A passes through the corresponding insert, the other side of the constraint rod A can move through the connecting ring A, the constraint rod B is screwed to the corresponding constraint port, the other side of the connecting rod is fixedly connected to a rotating disk B in the middle, and the inner wall of the connecting ring B is fixedly connected to the outer wall of the connecting ring A.

[0007] Furthermore, the connection unit includes a flange, the inner wall of the flange is fixedly connected to the outer wall of the pipe, several sockets are reserved on the flange, and a pair of mirror-shaped auxiliary ports are reserved on both sides of the inner wall of the sockets, and a telescopic rod A is fixedly connected to the bottom wall of the auxiliary ports.

[0008] Furthermore, elastic element A is clamped to the periphery of telescopic rod A, one side of telescopic rod A is fixedly connected to wedge-shaped seat, and both sides of elastic element A are fixedly connected to the bottom wall of the auxiliary port and the outer wall of wedge-shaped seat.

[0009] Furthermore, several assembly openings are reserved on the inclined surface of the wedge-shaped seat. A constraint rod is fixed in the assembly opening, and a rotating platform is screwed onto the constraint rod. Part of the outer peripheral wall of the rotating platform passes through the assembly opening.

[0010] Furthermore, a constraint unit is installed on the outer wall of the constraint disk. The constraint unit includes a pair of support platforms, which are fixed to the constraint disk. A hinge is installed between the pair of constraint disks, and a rotating plate is installed on the hinge.

[0011] Furthermore, U-shaped openings are reserved on both sides of the rotating plate, and a U-shaped rod is fixed to the outer wall of the connecting ring B. A screw is threaded onto the U-shaped rod, and one side of the screw is fixed to the telescopic rod B. An elastic element B is clamped onto the outer peripheral wall of the telescopic rod B.

[0012] Furthermore, a stop bead is fixedly connected to the other side of the telescopic rod B, and both sides of the elastic element B are fixedly connected to one side of the lead screw and the outer wall of the stop bead.

[0013] Furthermore, the upper end of the expansion packer body has a pre-reserved assembly port, in which a leak-proof ring is installed, and a connection port is pre-reserved on one side of the pipeline.

[0014] The beneficial effects of this invention are as follows: In this invention, the stop unit on the expansion packer body is aligned with the connecting unit, so that the connecting ring A and the flange are in contact. Several truncated cones are rotated to several sockets. Then, the expansion packer body is moved so that the connecting ring A moves toward the flange, and then the truncated cones move toward the sockets, thereby achieving the purpose of fastening and preventing leakage of the expansion packer body and the pipeline. During use, when disassembling the expansion packer body and pipeline, the rotation of the constraint disc is controlled. First, a pair of lead screws are moved outwards towards the U-shaped rod, and then the constraint on the rotating plate is released. Then the rotating plate can be rotated. When the rotating plate leaves the U-shaped rod, the pair of lead screws are rotated again, causing a pair of stop beads to move into the U-shaped rod. After the rotating plate pulls the clamp to the required position, the rotating plate is rotated into the U-shaped rod, causing a pair of stop beads to be compressed. The pair of stop beads can then return to their positions under the deformation force of the elastic element B, and move into the corresponding U-shaped openings, further improving the ease of fastening. During operation, as the truncated cones move into the sockets, the installation of several rotating platforms reduces resistance when the truncated cones are in contact with the wedge-shaped seats, facilitating the movement of the truncated cones and thus ensuring the fastening efficiency of the expansion packer body and the pipeline.

[0015] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the expansion packer body structure according to an embodiment of the present invention; Figure 2 This is an enlarged structural diagram of the remote control module according to an embodiment of the present invention; Figure 3 This is an embodiment of the present invention. Figure 1 A magnified structural diagram at point A; Figure 4 This is a schematic diagram of the connection structure between the expansion packer body and the pipeline according to an embodiment of the present invention; Figure 5 This is an enlarged structural diagram of the connection between the expansion packer body and the pipeline in an embodiment of the present invention; Figure 6 This is a schematic diagram of the pipe connection structure according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the anti-leakage ring disassembly structure according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the connecting ring A structure according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the lead screw structure according to an embodiment of the present invention; Figure 10 This is a schematic diagram of the stop unit structure according to an embodiment of the present invention; Figure 11 This is a schematic diagram of the internal structure of the connecting ring A according to an embodiment of the present invention; Figure 12 This is a schematic diagram of the internal structure of the connecting ring B according to an embodiment of the present invention; Figure 13 This is a schematic diagram of the rotating plate structure according to an embodiment of the present invention; Figure 14 This is a schematic diagram of the disassembled structure of the U-shaped rod in an embodiment of the present invention; Figure 15 This is a schematic diagram of the pipe connection structure according to an embodiment of the present invention; Figure 16 This is a schematic diagram of the cross-sectional structure of the flange portion according to an embodiment of the present invention; Figure 17 This is a schematic diagram of the connection unit structure according to an embodiment of the present invention; Reference numerals: 100, Expansion packer body; 1, Central tube; 2, Rotating sleeve; 10, Second inlet port; 20, First inlet port; 200, Assembly port; 300, Leak-proof ring; 400, Stop unit; 41, Connecting ring A; 42, Rotating disk A; 43, Lead screw; 44, Hoop; 45, Frustum; 46, Fitting interface; 47, Constraint rod A; 48, Rotating disk B; 49, Constraint rod B; 4010, Constraint port; 4011, Connecting ring B; 4012, Connecting rod; 4013, Constraint disc; 500, Constraint unit; 51, Support platform; 52, Hinge; 53, Rotating plate; 54, U-shaped opening; 55, U-shaped rod; 56, Lead screw; 57, Telescopic rod B; 58, Elastic element B; 59, Stop bead; 600, Pipe; 700, Connection port; 800, Connection unit; 81, Flange; 82, Socket; 83, Auxiliary port; 84, Telescopic rod A; 85, Elastic element A; 86, Wedge seat; 87, Assembly port; 88, Constraint bar; 89, Rotating platform. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0018] Example 1 Reference Figures 4-17 This invention proposes a remotely controlled packer for oil extraction, comprising an expandable packer body 100, with a pipe 600 installed at the upper end of the expandable packer body 100. This embodiment takes the connection between the expandable packer body 100 and the upper pipe 600 as an example. A stop unit 400 is installed on the outer wall of the upper end of the expansion packer body 100, and a connecting unit 800 is installed on the outer wall of the pipe 600. The stop unit 400 includes a connecting ring A41, in which several lead screws 43 are engaged. One side of the lead screw 43 is fixedly connected to a rotating disk A42, and a clamp 44 is threaded onto the outer peripheral wall of the lead screw 43. The other side of the lead screw 43 is fixedly connected to a truncated cone 45. A vertical fitting interface 46 is reserved on the clamp 44, and a constraint rod A47 is movably installed in the fitting interface 46. A rotating disk B48 is installed on the side of the rotating disk A42. Both disk A42 and rotating disk B48 have several pre-drilled teeth on their outer peripheral walls, which are connected to each other through interlocking teeth. A constraint rod B49 is fixedly connected to rotating disk B48. Several constraint openings 4010 are pre-drilled on the wall of connecting ring A41. Connecting ring B4011 is fixedly connected to connecting ring A41. Connecting rod 4012 is screwed into connecting ring B4011. One side of connecting rod 4012 is fixedly connected to constraint disk 4013. The inner wall of connecting ring A41 is fixedly connected to the outer wall of expansion packer body 100. One side of constraint rod A47 passes through the corresponding insertion interface 46. 7. One side of the connecting rod 4012 can move through the connecting ring A41. The constraint rod B49 and the corresponding constraint port 4010 are screwed together. The other side of the connecting rod 4012 is fixed to a rotating disk B48 in the middle. The inner wall of the connecting ring B4011 is fixed to the outer wall of the connecting ring A41. The connecting unit 800 includes a flange 81. The inner wall of the flange 81 is fixed to the outer wall of the pipe 600. Several sockets 82 are reserved on the flange 81. A pair of mirrored auxiliary ports 83 are reserved on both sides of the inner wall of the sockets 82. The telescopic rod A84 is fixed to the bottom wall of the auxiliary port 83. The telescopic rod A84 is circumferentially... The elastic element A85 is attached to the wall, and the telescopic rod A84 is fixedly connected to the wedge seat 86 on one side. The elastic element A85 is fixedly connected to the bottom wall of the auxiliary port 83 and the outer wall of the wedge seat 86 on both sides. Several assembly ports 87 are reserved on the inclined surface of the wedge seat 86. The constraint rod 88 is fixedly connected to the assembly port 87. The rotating table 89 is screwed onto the constraint rod 88. Part of the outer peripheral wall of the rotating table 89 passes through the assembly port 87. The upper end of the expansion packer body 100 is reserved with an assembly port 200. A leak-proof ring 300 is installed in the assembly port 200. The pipe 600 is reserved with a connection port 700 on one side.

[0019] Align the stop unit 400 on the expansion packer body 100 with the connecting unit 800, so that the connecting ring A41 and the flange 81 are in contact. During this process, the connecting ring A41 and the flange 81 are fitted together. Then, rotate several truncated cones 45 to the corresponding sockets 82. Next, move the expansion packer body 100 so that the connecting ring A41 moves toward the flange 81, and then the truncated cones 45 move toward the sockets 82, so that each truncated cone 45 is fitted into its corresponding socket 82. During the movement of the truncated cones 45, they compress the pair of wedges 86 that are in contact with them, thereby pulling the cooperating elastic element A85 to be compressed and shortened. This then pulls the wedges 86 to move into their respective matching auxiliary ports 83, and finally, the truncated cones 45 move upwards to the pair of wedges 86. At the top, in the middle, the truncated cone 45 and the clamp 44 are separated. When the truncated cone 45 moves upward to a point where it is not in contact with a pair of wedge seats 86, because the radial span of the longest circumference of the truncated cone 45 is greater than the radial span of the screw 43, the pair of elastic members A85 extend under their deformation force, pulling the pair of wedge seats 86 to move towards one side of the screw 43, and then the pair of wedge seats 86 are inserted between the clamp 44 and the truncated cone 45, and then the truncated cones 45 are fastened into the sockets 82. At this time, the leak-proof rings 300 are all locked into the joints 700, thereby achieving the purpose of fastening and leak-proofing the expansion packer body 100 and the pipe 600. During the period when the truncated cones 45 move into the sockets 82, through the The installation of the dry rotating platform 89 reduces the obstruction between the truncated cone 45 and the wedge seat 86 during contact, improving the smoothness of the truncated cone 45's movement. During disassembly of the expansion packer body 100 and the pipe 600, rotating the constraint disk 4013 pulls the connecting rod 4012 to rotate, which in turn pulls the surrounding rotating disk B48 to rotate, and then pulls the remaining rotating disks A42 and B48 to rotate. The constraint rod B49 and constraint port 4010 are compatible and both have an "L" shaped structure, which not only constrains the constraint rod B49 but also facilitates its rotation. The rotation of several rotating disks A42 pulls several lead screws 43 to rotate, which in turn pulls several clamps 44 to move upwards, with the cooperation of several constraint rods A47. The movement of the clamp 44 is constrained, allowing it to move only vertically under the assistance of the screw 43. Furthermore, the insert 46 and the constraint rod A47 are mutually compatible and both have an "L"-shaped structure, which not only constrains the constraint rod A47 but also facilitates its vertical movement. When the clamp 44 moves to its contact point with the wedge seat 86, it applies pressure to the wedge seat 86, shortening the elastic element A85 and pulling the wedge seat 86 into the assist port 83. When the upper end of the clamp 44 moves to its contact point with the lower end of the truncated cone 45, the clamp 44 and the truncated cone 45 combine into a single structure. The radial span of the lower end of the truncated cone 45 is equal to the radial span of the clamp 44, and the lower end of the clamp 44 remains below the wedge seat 86, still applying pressure to it.At this moment, the expansion packer body 100 can be pulled outward, thereby causing the clamp 44 to move, and then the conical truncated cone 45 to move out of the socket 82, achieving the purpose of disassembling the connecting ring A41 and the flange 81. During the movement of the expansion packer body 100, the anti-leakage ring 300 is also moved, allowing it to move out of the connecting port 700, achieving the purpose of disassembling the expansion packer body 100 and the pipeline 600. Through the cooperation of the stop unit 400 and the connecting unit 800, the disassembly and tightening of the expansion packer body 100 are convenient, making it very easy to use.

[0020] Reference Figure 5 and Figures 12-14 A constraint unit 500 is installed on the outer wall of the constraint disk 4013. The constraint unit 500 includes a pair of support platforms 51, which are fixedly connected to the constraint disk 4013. A hinge 52 is installed between the two constraint disks 4013. A rotating piece 53 is installed on the hinge 52. U-shaped openings 54 are reserved on the two side walls of the rotating piece 53. A U-shaped rod 55 is fixedly connected to the outer wall of the connecting ring B4011. A lead screw is threaded onto the U-shaped rod 55. 56. One side of the lead screw 56 is fixedly connected to the telescopic rod B57. The elastic element B58 is clamped on the outer peripheral wall of the telescopic rod B57. The other side of the telescopic rod B57 is fixedly connected to the stop ball 59. Both sides of the elastic element B58 are fixedly connected to one side of the lead screw 56 and the outer wall of the stop ball 59. An assembly port 200 is reserved on the expansion packer body 100. A leak-proof ring 300 is installed in the assembly port 200. A connection port 700 is reserved on the pipe 600.

[0021] When disassembling the expansion packer body 100 and the pipe 600, in order to allow the constraint disc 4013 to rotate, first rotate a pair of lead screws 56, causing them to move outward from the U-shaped rod 55. Then, pull the stop beads 59 to move out of the corresponding U-shaped openings 54, until they are all moved out of the U-shaped openings 54. Then, release the constraint on the rotating plate 53. Then, rotate the rotating plate 53 downward to move it to a vertical position. Then, rotate the constraint disc 4013. During this process, the hinge 52 can constrain the rotating plate 53 to prevent it from rotating arbitrarily. The hinge 52 has a damping function, which is existing technology and will not be described in detail here. When the rotating plate 53 moves into the U-shaped rod 55, then rotate a pair of lead screws 56, causing them to move outward from the U-shaped rod 55. The rotating plate 53 moves into the U-shaped rod 55 until the outer surfaces of the pair of lead screws 56 and the outer wall of the U-shaped rod 55 are in contact. Then, the pair of stop beads 59 move into the U-shaped rod 55. After the rotating plate 53 pulls the clamp 44 to the desired position, the rotating plate 53 rotates into the U-shaped rod 55, and the pair of stop beads 59 are subjected to pressure, which compresses the pair of elastic elements B58. When the pair of U-shaped openings 54 rotate to the corresponding lead screws 56, the pair of stop beads 59 can return to their original positions under the cooperation of the deformation force of the elastic elements B58, and move into the corresponding U-shaped openings 54. This can constrain the rotating plate 53 and prevent movement in subsequent operations. Through the cooperation of the constraint unit 500, the ease of use is further improved.

[0022] During tightening, the stop unit 400 on the expansion packer body 100 is aligned with the connecting unit 800, so that the connecting ring A41 and the flange 81 are in contact. Several truncated cones 45 are rotated to several sockets 82. Then, the expansion packer body 100 is moved so that the connecting ring A41 moves toward the flange 81, and then the truncated cones 45 move toward the sockets 82, so that each truncated cone 45 is fitted into its corresponding socket 82. During the movement of the truncated cones 45, the pair of wedges 86 in contact with them are compressed, thereby pulling the cooperating elastic element A85 to be compressed and shortened. Then, the wedges 86 are pulled to move into their respective matching auxiliary ports 83. Then, the truncated cones 45 move upwards to the top of the pair of wedges 86. When the truncated cones 45 move upwards to the top of the pair of wedges 86... When the pair of wedge seats 86 are not in contact, because the radial span of the longest circumference of the truncated cone 45 is greater than the radial span of the lead screw 43, the pair of elastic elements A85 extend under their deformation force, pulling the pair of wedge seats 86 to move towards one side of the lead screw 43, thus allowing the pair of wedge seats 86 to be inserted between the hoop 44 and the truncated cone 45, and then fastening the truncated cones 45 into the sockets 82. At this moment, the leak-proof rings 300 are all locked into the connection ports 700, thereby achieving the purpose of fastening and leak-proofing the expansion packer body 100 and the pipe 600. When disassembling the expansion packer body 100 and the pipe 600, the constraint disc 4013 is rotated, pulling the connecting rod 4012 to rotate, and then pulling the rotating disc B48 around it. The rotation of the rotating discs A42 and B48 causes the remaining rotating discs A42 and B48 to rotate. The rotation of the rotating discs A42 causes the screws 43 to rotate, which in turn causes the clamps 44 to move upwards. When the clamps 44 move to the point where they are in contact with the wedge seat 86, they apply pressure to the wedge seat 86, causing the elastic element A85 to shorten. This pulls the wedge seat 86 into the auxiliary port 83. When the upper end of the clamp 44 moves to the point where it is in contact with the lower end of the truncated cone 45, the clamp 44 and the truncated cone 45 combine into a single structure. The lower end of the clamp 44 is still below the wedge seat 86, still applying pressure to the wedge seat 86. At this moment, it can pull outwards away from the expansion packer body 100. Then, the clamps 44 are pulled to move, and the truncated cone 45 is pulled out of the insertion port 82, so that the connecting ring A41 can move outwards. The purpose of disassembling the flange 81 is to move the anti-leakage ring 300 during the movement of the expansion packer body 100, thereby moving it out of the connection port 700, achieving the purpose of disassembling the expansion packer body 100 and the pipeline 600. In addition, in order to rotate the restraining disc 4013, first rotate a pair of lead screws 56, allowing them to move outward from the U-shaped rod 55, and then pull the stop beads 59 to move out of the corresponding U-shaped opening 54, until they are all moved out of the U-shaped opening 54. Then the restraint on the rotating plate 53 is released, and then the rotating plate 53 can be rotated downward to move it to a vertical position. Then the restraining disc 4013 can be rotated. When the rotating plate 53 moves into the U-shaped rod 55, then rotate a pair of lead screws 56, allowing them to move into the U-shaped rod 55.Until the outer surfaces of the pair of lead screws 56 and the outer wall of the U-shaped rod 55 are in contact, the pair of stop beads 59 move into the U-shaped rod 55. After the rotating plate 53 pulls the clamp 44 to the desired position, the rotating plate 53 rotates into the U-shaped rod 55, causing the pair of stop beads 59 to be compressed, which in turn compresses the pair of elastic elements B58. When the pair of U-shaped openings 54 rotate to the corresponding lead screws 56, the pair of stop beads 59 return to their original positions under the deformation force of the elastic elements B58, moving into the corresponding U-shaped openings 54, thus constraining the rotating plate 53.

[0023] Example 2 Reference Figures 1-3 The difference from Embodiment 1 is that the expansion packer body 100 includes a central tube 1, a rotating sleeve 2 screwed into the central tube 1, and a first liquid inlet 20 and a second liquid inlet 10 respectively pre-drilled on the rotating sleeve 2 and the central tube 1. A rotating device is provided outside the central tube 1 to drive the rotating sleeve 2 to rotate and make the first liquid inlet 20 and the second liquid inlet 10 connected. The rotating device includes a connected drive unit and a power transmission device. The power transmission device passes through the central tube 1 and is connected to the rotating sleeve 2. A remote control module is installed on the drive unit. The remote control module includes: The microprocessor unit is used to receive digital electrical signals, identify, judge, process, and generate corresponding control signals. The A / D conversion unit is electrically connected to the microprocessor unit and is used to convert analog electrical signals into digital signals; The sound-to-electric conversion unit is used to receive signals and convert them into analog electrical signals; The ground control system is electrically connected to the acoustic-to-electric conversion unit and is used to send signals to the acoustic-to-electric conversion unit; The drive unit is electrically connected to the microprocessor unit and is used to receive control signals from the microprocessor unit. The drive unit is equipped with an automatic switch, which is electrically connected to the microprocessor unit. The power supply unit is used to supply power to the entire remote control module.

[0024] The ground control system sends a vibration sound wave signal. After receiving the vibration sound wave signal, the acoustic-to-electric conversion unit converts the vibration sound wave signal into an analog electrical signal. This analog electrical signal is converted into a digital signal by the A / D conversion unit and transmitted to the microprocessor unit. The microprocessor unit identifies, judges, processes, and generates a corresponding control signal. After receiving this control signal, the automatic switch controls the power transmission device to operate, thereby causing the first liquid inlet 20 and the second liquid inlet 10 on the expansion packer body 100 to coincide and open. Then, by ground pressure, the expansion packer body 100 is set, thus realizing remote control of the expansion packer body 100.

[0025] The foregoing has shown and described 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 embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A remotely controlled packer for oil extraction, the expandable packer body comprising a central tube, a rotating sleeve screwed into the central tube, and a remote control module disposed outside the central tube, the remote control module comprising: a microprocessor unit for receiving digital electrical signals and identifying, judging, processing, and generating corresponding control signals; an A / D conversion unit electrically connected to the microprocessor unit for converting analog electrical signals into digital signals; an acoustic-to-electrical conversion unit for receiving signals and converting the signals into analog electrical signals; a ground control system electrically connected to the acoustic-to-electrical conversion unit for sending signals to the acoustic-to-electrical conversion unit; a drive unit electrically connected to the microprocessor unit for receiving control signals from the microprocessor unit, the drive unit being equipped with an automatic switch electrically connected to the microprocessor unit; and a power supply unit for supplying power to the entire remote control module, characterized in that... An expansion packer body has a pipe installed at its upper end. A stop unit is installed on the outer wall of the upper end of the expansion packer body. A connecting unit is installed on the outer wall of the pipe. The stop unit includes a connecting ring A. Several lead screws are engaged in the connecting ring A. One side of the lead screw is fixed to a rotating disk A. A hoop is threaded onto the outer peripheral wall of the lead screw. A truncated cone is fixed to the other side of the lead screw. A vertical fitting interface is reserved on the hoop. A constraint rod A is movably installed in the fitting interface. A rotating disk B is installed on the side of the rotating disk A. Several teeth are reserved on the outer peripheral walls of both rotating disk A and rotating disk B and they are connected to each other through the teeth. A constraint rod B is fixed to the rotating disk B. Several constraint openings are reserved on the wall of the connecting ring A. A connecting ring B is fixed to the connecting ring A. A connecting rod is screwed into the connecting ring B. One side of the connecting rod is fixed to the constraint disk.

2. The remote-controlled packer for oil extraction according to claim 1, characterized in that: The inner wall of the connecting ring A is fixedly connected to the outer wall of the expansion packer body. One side of the constraint rod A passes through the corresponding insert, and the other side of the constraint rod A can move through the connecting ring A. The constraint rod B is screwed to the corresponding constraint port. The other side of the connecting rod is fixedly connected to a rotating disk B in the middle. The inner wall of the connecting ring B is fixedly connected to the outer wall of the connecting ring A.

3. The remote-controlled packer for oil extraction according to claim 2, characterized in that: The connection unit includes a flange, the inner wall of which is fixedly connected to the outer wall of the pipe. Several sockets are reserved on the flange, and a pair of mirrored auxiliary ports are reserved on both sides of the inner wall of the socket. The expansion rod A is fixedly connected to the bottom wall of the auxiliary port.

4. The remote-controlled packer for oil extraction according to claim 3, characterized in that: The elastic element A is clamped to the periphery of the telescopic rod A. One side of the telescopic rod A is fixedly connected to the wedge-shaped seat. Both sides of the elastic element A are fixedly connected to the bottom wall of the auxiliary port and the outer wall of the wedge seat.

5. A remotely controlled packer for oil extraction according to claim 4, characterized in that: Several assembly openings are pre-drilled on the inclined surface of the wedge-shaped seat. A constraint rod is fixed in the assembly opening, and a rotating table is screwed onto the constraint rod. Part of the outer peripheral wall of the rotating table passes through the assembly opening.

6. A remotely controlled packer for oil extraction according to claim 5, characterized in that: A constraint unit is installed on the outer wall of the constraint disk. The constraint unit includes a pair of support platforms, which are fixed to the constraint disk. A hinge is installed between the pair of constraint disks, and a rotating plate is installed on the hinge.

7. A remotely controlled packer for oil extraction according to claim 6, characterized in that: U-shaped openings are reserved on both sides of the rotating plate. A U-shaped rod is fixed to the outer wall of the connecting ring B. A screw is threaded onto the U-shaped rod. One side of the screw is fixed to the telescopic rod B. An elastic element B is clamped onto the outer peripheral wall of the telescopic rod B.

8. A remotely controlled packer for oil extraction according to claim 7, characterized in that: The other side of the telescopic rod B is fixed to a stop bead, and both sides of the elastic element B are fixed to one side of the lead screw and the outer wall of the stop bead.

9. A remotely controlled packer for oil extraction according to claim 8, characterized in that: An assembly port is reserved at the upper end of the expansion packer body, and a leak-proof ring is installed in the assembly port. A connection port is reserved on one side of the pipeline.

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