Vibratory cementing variable diameter rigid centralizer

Abstract

The application discloses a variable-diameter rigid centralizer for vibrating cementing of an oil and gas well, and belongs to the technical field of oil and gas well engineering. A first RFID beacon chip is put in, eccentric power blades are rotated, a coil spring and a power blade connected cylinder combination are driven, until the blocking convex block on the coil spring is stuck at the opening, the rotation and energy storage are stopped, and then a second RFID beacon chip is lowered; an RFID reader antenna receives a signal and then connects a second circuit board, a spherical connection valve is rotated to connect the outside and a cylinder pipe; a piston push rod pushes the piston to move and is fixed by a strong magnet, a rigid centralizing plate and a centralizing plate hinged rod are unfolded, and an extension support short rod is unfolded; the second RFID beacon chip is pumped into a casing, the RFID reader antenna receives information, the first circuit board is connected, a first high-temperature motor is actuated, a cylindrical sliding groove is rotated, a pawl is lowered relative to a ratchet wheel, a vibration release assembly is unlocked, and the centralizer vibrates. The application guarantees that the centralizer is smoothly lowered into the well, reduces friction, adopts modular design, and is simple to manufacture, carry and assemble.

Description

Technical Field

[0001] This invention relates to the field of oil and gas well engineering technology, and in particular to a vibratory cementing type variable diameter rigid centralizer. Background Technology

[0002] In the cementing process of oil and gas wells, the quality of cementing plays a crucial role. Currently, casing centralizers are widely used in cement slurry cementing. Existing casing centralizers can provide good centering of the casing while being easy to run in, and can effectively prevent cement slurry from flowing through the channel. However, during the implementation of the project, while ensuring the smooth progress of the project, operational efficiency and quality must also be considered.

[0003] Based on the existing functions of traditional centralizers, their design is optimized. At the same time, with the aim of improving cement slurry cementing efficiency, i.e. improving cementing quality and reducing the time required for cementing, a vibratory cementing type variable diameter rigid centralizer is designed, which combines vibratory cementing with casing centralization. This has important practical significance for improving cementing quality and saving time and costs. Summary of the Invention

[0004] The purpose of this invention is to provide a vibratory cementing type variable diameter rigid centralizer, including a rotary energy storage assembly, a vibration release assembly, a centralizer assembly, an upper support sleeve assembly, a lower support sleeve assembly, a propulsion assembly, and a casing. The rotary energy storage assembly includes an eccentric power blade, a coil spring, a coil spring sleeve, a power blade connecting sleeve, a bearing, and a power blade connecting sleeve end cap.

[0005] The vibration release assembly includes a ratchet, a pawl, a cylindrical slide, a first sealing support ring, a first high-temperature motor, a first circuit board, and an RFID reader antenna;

[0006] The straightening plate assembly includes a rigid straightening plate and a straightening plate hinge rod;

[0007] The upper support sleeve assembly includes an upper support sleeve, a telescopic support short rod, and a telescopic support long rod;

[0008] The propulsion assembly includes a piston push rod, a sleeve cap, a propulsion sleeve, a ball valve, a second sealing support ring, a second high-temperature motor, a second circuit board, and a lower anti-sticking wheel;

[0009] The eccentric power blade has a welded blade cover at its outer end, which is bolted to the power blade connecting cylinder. The power blade connecting cylinder is a hollow structure with a cylinder wall separating the middle layer. One end of the cylinder is connected to the eccentric power blade, and the other end is bolted to the end cap of the power blade connecting cylinder. The end cap of the power blade connecting cylinder is assembled and fixed with a ratchet. The coil spring sleeve and the sleeve are interference-fitted. The coil spring is sleeved on the coil spring sleeve and interference-fitted with it. Both are located in the innermost layer of the power blade connecting cylinder, and the outer end of the coil spring passes through the middle layer cylinder wall of the power blade connecting cylinder and is fixed in the middle layer. The lower end of the coil spring sleeve is evenly and staggered with a high-temperature motor storage box and a fixed hinge rod along the circumference. The coil spring and the coil spring sleeve are relatively stationary, and the coil spring sleeve and the sleeve are relatively stationary. The power blade connecting cylinder rotates relative to the sleeve, driving the coil spring to rotate and store energy. The bearing is located between the coil spring sleeve and the power blade connecting cylinder.

[0010] The ratchet and pawl assembly allows the rotary energy storage component to rotate only in one direction; the two ends of the cylindrical slide are respectively engaged and assembled with the first high-temperature motor and the pawl, so that the first high-temperature motor drives the cylindrical slide to rotate and realize the up and down movement of the pawl; the first sealing support square ring is engaged with the shaft of the first high-temperature motor to seal and support the first high-temperature motor; the first circuit board and RFID reader antenna are set above the first high-temperature motor; except for the ratchet, all components in the vibration release component are carried by the high-temperature motor storage box.

[0011] The rigid centralizer is hinged at both ends with centralizer hinge rods, which are evenly distributed along the circumference. One side of the centralizer hinge rod is hinged with a fixed hinge rod, and the other side is hinged with a piston push rod. When it is lowered into the preset position in the well, the rigid centralizer is pushed out by the propulsion assembly.

[0012] The telescopic support short rod and the telescopic support long rod are hinged and can rotate relative to each other; the upper support sleeve is hinged to the straightening plate assembly, and the telescopic support short rod and the telescopic support long rod unfold to provide support during the deployment of the rigid straightening plate; the lower support sleeve assembly is clearance-fitted to the propulsion assembly, and also provides support during the deployment of the rigid straightening plate by the piston propulsion rod.

[0013] The sleeve cap includes a square cap, a multi-layer rubber sealing sleeve, a powerful magnet, and a cylinder tube. The square cap is bolted to the propulsion sleeve. The piston push rod is fitted with the sleeve cap through a clearance fit, and a multi-layer rubber sealing sleeve is installed between them to ensure that the piston chamber behind is in a low-pressure state. The powerful magnet is mounted on the end wall of the cylinder tube to fix the piston push rod after the action is completed. The second high-temperature motor is connected to the ball valve through a coupling to realize primary transmission to control the connection and closure of the external environment of the propulsion sleeve. The ball valve is assembled and sealed with the cylinder tube. The second sealing support square ring encloses the second high-temperature motor in a sealed space to prevent the downhole fluid from damaging the second high-temperature motor. A second circuit board is installed below the second high-temperature motor. The anti-sticking wheel is set along the axial direction of the propulsion sleeve to facilitate the entry of the centralizer into the well.

[0014] The number of rigid straightening plates is 4.

[0015] Four pairs of telescopic support short rods and telescopic support long rods are evenly distributed along the circumference.

[0016] Each group has 15 anti-stick wheels installed.

[0017] Four sets of anti-sticking wheels are arranged circumferentially along the push sleeve.

[0018] A method for using a vibratory cementing variable diameter rigid centralizer: Before cementing operations in an oil and gas well, the vibratory cementing variable diameter rigid centralizer is installed on the oil and gas well casing and lowered to a predetermined position along with the casing. When circulating drilling fluid, a first RFID beacon chip carrying information for activating a second circuit board is inserted. The drilling fluid acts on the eccentric power blade in the rotating energy storage assembly, causing it to rotate, which in turn drives the coil spring and the power blade connecting cylinder assembly. At this time, the coil spring is wound around the cylinder wall of the intermediate layer through the power blade connecting cylinder. As the number of coil spring turns gradually increases, energy is gradually stored. When the coil spring is wound to 3 / 8 of its original length, the blocking protrusion on the coil spring is jammed at the opening, and the rotating energy storage assembly stops rotating and storing energy. Then, the second RFID beacon chip is lowered along with the cement slurry.

[0019] The RFID reader antenna receives a signal and connects to the second circuit board, unlocking the second high-temperature motor to rotate. The spherical connecting valve rotates to connect the outside world to the cylinder pipe. The piston push rod, supported by the lower support sleeve assembly, moves itself through the pressure difference at both ends and is fixed by a strong magnet, causing the rigid straightening plate and the straightening plate hinge rod to unfold, thus implementing the first stage of fixation for the rigid straightening plate. During the unfolding process, the telescopic support short rod unfolds accordingly, implementing the second stage of fixation for the rigid straightening plate, thereby achieving support for the sleeve.

[0020] A second RFID beacon chip carrying the activation information of the first circuit board is pumped into the casing along with the cement slurry. The RFID reader antenna receives the information and connects to the first circuit board. The first high-temperature motor is activated, driving the cylindrical slide to rotate, causing the pawl to move downward relative to the ratchet. The one-way restriction is canceled, the vibration release component is unlocked, and the centralizer vibrates under the rotation of the eccentric power blade, thereby achieving the effect of vibration to improve the cementing quality.

[0021] The beneficial effects of this invention are as follows:

[0022] 1. During the process of the vibratory cementing variable diameter rigid centralizer of the present invention being lowered into the well along with the casing, the rigid centralizer plate is in a closed state, which can ensure the smooth lowering of the centralizer and reduce the friction with the well wall.

[0023] 2. After the vibratory cementing type variable diameter rigid centralizer of the present invention is lowered into the well to a preset position along with the casing, the RFID beacon chip deployed with the circulating drilling fluid can accurately control the centralizer plate to unfold, thereby keeping the casing at a suitable centering.

[0024] 3. When circulating drilling fluid, the vibration energy storage device stores mechanical energy. When cementing, the RFID beacon chip is deployed to control the release of vibration energy, which drives the eccentric power blade to rotate and generate vibration for cementing, which greatly improves the cementing quality.

[0025] 4. Anti-sticking wheels are evenly distributed around the circumference at the lower end of the stabilizer. The anti-sticking wheels adopt a differential design of two halves, which can reduce the friction between the stabilizer and the well wall during the lowering process. At the same time, it can prevent the problem of mud cake sticking to the lowering wheel of the traditional stabilizer and affecting normal operation.

[0026] 5. The components of the centralizer are closely connected and adopt a modular design, making manufacturing, transportation, and assembly simple. Attached Figure Description

[0027] Figure 1 A three-dimensional isometric view of a vibratory cementing variable diameter rigid centralizer;

[0028] Figure 2 A schematic cross-sectional view of the overall structure of a vibratory cementing type variable diameter rigid centralizer.

[0029] Figure 3 This is a cross-sectional view of a rotating energy storage module;

[0030] Figure 4 Top view of the rotating energy storage unit;

[0031] Figure 5 This is an assembly drawing of the coil spring, coil spring sleeve, and power blade connecting sleeve in a rotating energy storage component.

[0032] Figure 6 Axonometric view of an eccentric power blade in a rotating energy storage module;

[0033] Figure 7 This is a cross-sectional view of the vibration release assembly.

[0034] Figure 8 This is a magnified view of a portion of the vibration release component;

[0035] Figure 9 A schematic cross-sectional view of the straightening plate assembly in its undeployed state;

[0036] Figure 10 A 3D isometric view of the unfolded state of the straightening plate assembly;

[0037] Figure 11 This is a 3D isometric view of the entire upper support component;

[0038] Figure 12 This is a cross-sectional view of the lower support component.

[0039] Figure 13 A schematic diagram of the overall cross-sectional structure of the component is provided.

[0040] Figure 14 Enlarged view of a portion of the sleeve cap in the advancement component;

[0041] Figure 15 A schematic diagram of the cross-sectional structure of the sealing support ring in the component;

[0042] Figure 16 This is a schematic diagram illustrating the operation of RFID beacon chip installation.

[0043] Figure 17 This is a magnified view of the area where the anti-sticking roller is inserted. Detailed Implementation

[0044] This invention proposes a vibratory cementing type variable diameter rigid centralizer, which will be further described below with reference to the accompanying drawings and specific embodiments.

[0045] Figure 1 A three-dimensional isometric view of a vibratory cementing type variable diameter rigid centralizer. Figure 2 This is a schematic cross-sectional view of the overall structure of a vibratory cementing variable diameter rigid centralizer; it includes a rotary energy storage assembly 1, a vibration release assembly 2, a centralizer assembly 3, an upper support sleeve assembly 4, a lower support sleeve assembly 5, a propulsion assembly 6, and a casing 7.

[0046] Figure 3 This is a cross-sectional view of a rotating energy storage assembly. The rotating energy storage assembly 1 includes an eccentric power blade 101, a coil spring 102, a coil spring sleeve 103, a power blade connecting cylinder 104, a bearing 105, and a power blade connecting cylinder end cap 106.

[0047] Figure 7 This is a cross-sectional view of the overall structure of the vibration release assembly. Figure 8 This is a partial enlarged view of the vibration release assembly; the vibration release assembly 2 includes a ratchet 201, a pawl 202, a cylindrical slide groove 203, a first sealing support square ring 204, a first high-temperature motor 205, a first circuit board 206, and an RFID reader antenna 207;

[0048] Figure 9 A schematic cross-sectional view of the straightening plate assembly in its undeployed state; Figure 10 A three-dimensional isometric view of the unfolded state of the straightening plate assembly; the straightening plate assembly 3 includes a rigid straightening plate 301 and a straightening plate hinge rod 302;

[0049] Figure 11This is a three-dimensional isometric view of the upper support assembly; the upper support sleeve assembly 4 includes an upper support sleeve 401, a telescopic support short rod 402, and a telescopic support long rod 403;

[0050] Figure 13 This is a schematic cross-sectional view of the propulsion assembly; the propulsion assembly 6 includes a piston push rod 601, a sleeve cover 602, a propulsion sleeve 603, a ball valve 604, a second sealing support square ring 605, a second high-temperature motor 606, a second circuit board 607, and a lower anti-sticking wheel 608. Figure 15 A schematic diagram of the cross-sectional structure of the sealing support ring in the component; Figure 17 This is a magnified view of the area where the anti-sticking roller is inserted.

[0051] in, Figure 6 This is an isometric view of an eccentric power blade in a rotating energy storage assembly. The outer end of the eccentric power blade 101 is welded with a blade cover, and the entire assembly is bolted to the power blade connecting cylinder 104. The power blade connecting cylinder 104 is a hollow structure with a cylinder wall separating the middle layer. One end is connected to the eccentric power blade 101, and the other end is bolted to the power blade connecting cylinder end cap 106. The power blade connecting cylinder end cap 106 is assembled and fixed to the ratchet 201. The coil spring sleeve 103 is interference-fitted with the sleeve 7. The coil spring 102 is sleeved on the coil spring sleeve 103 and interference-fitted with it. Both are located in the innermost layer of the power blade connecting cylinder 104, and the outer end of the coil spring 102 passes through the middle layer cylinder wall of the power blade connecting cylinder 104 and is fixed to the middle layer. The lower end of the coil spring sleeve 103 is evenly and alternately arranged with a high-temperature motor storage box 10301 and a fixed hinge rod 10302 along the circumference. Figure 4 As shown; the coil spring 102 and the coil spring sleeve 103 are relatively stationary, the coil spring sleeve 103 and the sleeve 7 are relatively stationary, and the power blade connecting cylinder 104 rotates relative to the sleeve 7, driving the coil spring 102 to rotate and store energy; the bearing 105 is disposed between the coil spring sleeve 103 and the power blade connecting cylinder 104; as Figure 5 This is an assembly drawing of the coil spring, coil spring sleeve, and power blade connecting sleeve in a rotating energy storage component.

[0052] The ratchet 201 and pawl 202 are assembled, allowing the rotary energy storage component 1 to rotate only in one direction. The two ends of the cylindrical slide 203 are respectively engaged and assembled with the first high-temperature motor 205 and the pawl 202, so that the first high-temperature motor 205 drives the cylindrical slide 203 to rotate, thereby enabling the pawl 202 to move up and down. The first sealing support square ring 204 is engaged with the shaft of the first high-temperature motor 205 to seal and support the first high-temperature motor 205. The first circuit board 206 and the RFID reader antenna 207 are set above the first high-temperature motor 205. Except for the ratchet 201, all components in the vibration release component 2 are carried by the high-temperature motor storage box 10301.

[0053] Four rigid centralizer plates 301 are hinged at both ends to centralizer plate hinge rods 302 and are evenly distributed along the circumference; one side of the centralizer plate hinge rod 302 is hinged to a fixed hinge rod 10302 and the other side is hinged to a piston push rod 601. When lowered into the preset position in the well, the rigid centralizer plates 301 are pushed out by the push assembly 6.

[0054] The telescopic support short rod 402 and the telescopic support long rod 403 are hinged together and can rotate relative to each other, with 4 pairs evenly distributed along the circumference; the upper support sleeve 401 is hinged to the straightening plate assembly 3, and the telescopic support short rod 402 and the telescopic support long rod 403 unfold accordingly to provide support during the unfolding of the rigid straightening plate 301; the lower support sleeve assembly 5 is clearance-fitted to the propulsion assembly 6, and also provides support during the unfolding of the rigid straightening plate 301 as the piston propulsion rod 601 propels it. Figure 12 This is a cross-sectional view of the lower support component.

[0055] Figure 14 This is a partial enlarged view of the sleeve cap in the propulsion assembly; the sleeve cap 602 includes a square cap 60201, a multi-layer rubber sealing sleeve 60202, a powerful magnet 60203, and a cylinder tube 60204; the square cap 60201 is bolted to the propulsion sleeve 603; the piston push rod 601 is fitted with the sleeve cap 602 with a clearance fit, and the multi-layer rubber sealing sleeve 60202 is set in between to seal the piston cavity, ensuring that the rear piston cavity is in a low-pressure state or vacuum state far below the downhole pressure; the end areas of the two ends of the piston push rod differ by about 4.5 times to facilitate the formation of a pressure difference between the two ends; the powerful magnet 60203 is assembled at the end of the cylinder tube 60204. On the wall, a piston push rod 601 is used to fix the piston after the action is completed; the second high-temperature motor 606 is connected to the ball valve 604 through a coupling to realize primary transmission to control the connection and closure of the external environment of the push sleeve 603; the ball valve 604 is assembled and sealed with the cylinder tube 60204; the second sealing support square ring 605 encloses the second high-temperature motor 606 in a sealed space to prevent the downhole fluid from damaging the second high-temperature motor 606; a second circuit board 607 is set below the second high-temperature motor 606; four sets of anti-sticking wheels 608 are set along the circumference of the push sleeve 603, and each set has 15 anti-sticking wheels 608 to facilitate the entry of the centralizer into the well.

[0056] The usage method of the vibratory cementing type variable diameter rigid centralizer is as follows:

[0057] Before cementing operations in oil and gas wells, a vibratory cementing variable-diameter rigid stabilizer is installed on the oil and gas well casing and lowered to the predetermined position along with the casing 7. During drilling fluid circulation, the first RFID beacon chip 8, carrying information activating the second circuit board 607, is inserted. Figure 16The diagram illustrates the operation of the RFID beacon chip. Drilling fluid acts on the eccentric power blade 101 in the rotating energy storage assembly 1, causing it to rotate. This, in turn, drives the coil spring 102 and the power blade connecting cylinder 104 to combine. At this time, the coil spring 102 is wound around the cylinder wall of the middle layer through the power blade connecting cylinder 104. As the number of coil springs 102 gradually increases, energy is gradually stored. When the coil spring is wound to 3 / 8 of its original length, the blocking protrusion on the coil spring 102 is stuck at the opening, and the rotating energy storage assembly 1 stops rotating to store energy. Then, the second RFID beacon chip 9 is lowered in along with the cement slurry.

[0058] The RFID reader antenna 207 receives a signal and connects to the second circuit board 607, unlocking the second high-temperature motor 606 to rotate. The spherical connecting valve 604 rotates to connect to the outside world and the cylinder pipe 60204. The piston push rod 601, supported by the lower support sleeve assembly 5, moves itself through a pressure difference of 4.5 times between its two ends and is fixed by a strong magnet 60203, causing the rigid straightening plate 301 and the straightening plate hinge rod 302 to unfold, thus implementing the first stage of fixation for the rigid straightening plate 301. During the unfolding process, the telescopic support short rod 402 unfolds accordingly, implementing the second stage of fixation for the rigid straightening plate 301, thereby achieving support for the sleeve 7.

[0059] The second RFID beacon chip 9, carrying information from the first circuit board 206, is pumped into the casing 7 along with the cement slurry. The RFID reader antenna 207 receives the information and connects the first circuit board 206. The first high-temperature motor 205 is activated, causing the cylindrical slide 203 to rotate. This causes the pawl 202 to move downward relative to the ratchet 201, canceling the one-way restriction. The vibration release component 2 is unlocked, and the centralizer undergoes periodic decay vibration driven by the rotation of the eccentric power blade 101, achieving the effect of vibration to improve cementing quality.

[0060] In this embodiment, the rigid centralizer of the vibratory cementing type variable diameter rigid centralizer is in a closed state during the process of being lowered into the well with the casing, which can ensure the smooth lowering of the centralizer and reduce friction with the well wall; the components of the centralizer are closely connected and adopt a modular design, which simplifies manufacturing, transportation and assembly.

Claims

1. A vibratory cementing type variable diameter rigid centralizer, comprising a rotary energy storage assembly (1), a vibration release assembly (2), a centralizer assembly (3), an upper support sleeve assembly (4), a lower support sleeve assembly (5), a propulsion assembly (6), and a casing (7), characterized in that, The rotating energy storage assembly (1) includes an eccentric power blade (101), a coil spring (102), a coil spring sleeve (103), a power blade connecting tube (104), a bearing (105), and a power blade connecting tube end cap (106). The vibration release assembly (2) includes a ratchet (201), a pawl (202), a cylindrical slide (203), a first sealing support square ring (204), a first high-temperature motor (205), a first circuit board (206), and an RFID reader antenna (207); The straightening plate assembly (3) includes a rigid straightening plate (301) and a straightening plate hinge rod (302); The upper support sleeve assembly (4) includes an upper support sleeve (401), a telescopic support short rod (402), and a telescopic support long rod (403); The propulsion assembly (6) includes a piston push rod (601), a sleeve cap (602), a propulsion sleeve (603), a ball valve (604), a second sealing support ring (605), a second high-temperature motor (606), a second circuit board (607), and a lower anti-sticking wheel (608). Among them, the outer end of the eccentric power blade (101) is welded with a blade cover, and the whole is connected to the power blade connecting cylinder (104) by bolts; the power blade connecting cylinder (104) is a hollow structure with a cylinder wall separating the middle layer. One end of it is connected to the eccentric power blade (101), and the other end is connected to the power blade connecting cylinder end cap (106) by bolts; the power blade connecting cylinder end cap (106) is assembled and fixed with the ratchet (201); the coil spring sleeve (103) is interference-fitted with the sleeve (7); the coil spring (102) is sleeved on the coil spring sleeve (103) and interference-fitted with it. The two are located in the innermost layer of the power blade connecting cylinder (104). The outer end of the coil spring (102) passes through the middle layer of the power blade connecting cylinder (104) and is fixed to the middle layer; the lower end of the coil spring sleeve (103) is uniformly and alternately provided with a high-temperature motor storage box (10301) and a fixed hinge rod (10302) along the circumference; the coil spring (102) and the coil spring sleeve (103) are relatively stationary, the coil spring sleeve (103) and the sleeve (7) are relatively stationary, and the power blade connecting cylinder (104) rotates relative to the sleeve (7), driving the coil spring (102) to rotate for energy storage; the bearing (105) is set between the coil spring sleeve (103) and the power blade connecting cylinder (104); The ratchet (201) and pawl (202) are assembled so that the rotating energy storage component (1) can only rotate in one direction; the two ends of the cylindrical slide (203) are respectively engaged and assembled with the first high-temperature motor (205) and the pawl (202), so that the first high-temperature motor (205) drives the cylindrical slide (203) to rotate and realize the up and down movement of the pawl (202); the first sealing support square ring (204) is engaged with the shaft of the first high-temperature motor (205) to seal and support the first high-temperature motor (205); the first circuit board (206) and RFID reader antenna (207) are set on the top of the first high-temperature motor (205); except for the ratchet (201), all components in the vibration release component (2) are carried by the high-temperature motor storage box (10301); The rigid centralizer (301) is hinged at both ends to centralizer hinge rods (302), which are evenly distributed along the circumference; one side of the centralizer hinge rod (302) is hinged to a fixed hinge rod (10302), and the other side is hinged to a piston push rod (601). When it is lowered into the preset position in the well, the rigid centralizer (301) is pushed out by the push assembly (6); The telescopic support short rod (402) and the telescopic support long rod (403) are hinged and can rotate relative to each other; the upper support sleeve (401) is hinged to the straightening plate assembly (3), and the telescopic support short rod (402) and the telescopic support long rod (403) unfold accordingly to provide support during the unfolding of the rigid straightening plate (301); the lower support sleeve assembly (5) is clearance-fitted to the propulsion assembly (6), and also provides support during the unfolding of the rigid straightening plate (301) by the piston propulsion rod (601); The sleeve cap (602) includes a square cap (60201), a multi-layer rubber sealing sleeve (60202), a powerful magnet (60203), and a cylinder tube (60204); the square cap (60201) and the push sleeve (603) are connected by bolts; the piston push rod (601) and the sleeve cap (602) are fitted with a clearance fit, and a multi-layer rubber sealing sleeve (60202) is set in the middle of them to seal and ensure that the piston chamber behind is in a low-pressure state; the powerful magnet (60203) is assembled on the end wall of the cylinder tube (60204) to fix the piston push rod after the action is completed. 601); The second high-temperature motor (606) and the ball valve (604) are connected by a coupling to realize primary transmission to control the connection and closure of the external environment of the propulsion sleeve (603); The ball valve (604) is assembled and sealed with the cylinder tube (60204); The second sealing support ring (605) encloses the second high-temperature motor (606) in a closed space to prevent downhole fluid from damaging the second high-temperature motor (606); A second circuit board (607) is set below the second high-temperature motor (606); The anti-sticking wheel (608) is set along the circumference of the propulsion sleeve (603) to facilitate the entry of the centralizer into the well.

2. The vibratory cementing type variable diameter rigid centralizer according to claim 1, characterized in that, The number of rigid straightening plates (301) is 4.

3. The vibratory cementing type variable diameter rigid centralizer according to claim 1, characterized in that, The telescopic support short rods (402) and telescopic support long rods (403) are evenly distributed in four pairs along the circumference.

4. The vibratory cementing type variable diameter rigid centralizer according to claim 1, characterized in that, The number of anti-stick wheels (608) in each group is 15.

5. The vibratory cementing type variable diameter rigid centralizer according to claim 1 or 4, characterized in that, The lower anti-sticking wheels (608) are arranged in four groups along the circumference of the propulsion sleeve (603).

6. A method of using the vibratory cementing type variable diameter rigid centralizer as described in claim 1, characterized in that, Before cementing operations in oil and gas wells, a vibratory cementing variable diameter rigid stabilizer is installed on the oil and gas well casing and lowered to a predetermined position along with the casing (7). When circulating drilling fluid, the first RFID beacon chip (8) carrying information of activating the second circuit board (607) is inserted. The drilling fluid acts on the eccentric power blade (101) in the rotating energy storage assembly (1) to make it rotate, thereby driving the coil spring (102) and the power blade connecting cylinder (104) to combine. At this time, the coil spring (102) is wound around the cylinder wall of the intermediate layer through the power blade connecting cylinder (104). As the number of coil springs (102) gradually increases, energy is gradually stored. When the coil spring is wound to 3 / 8 of its original length, the blocking protrusion on the coil spring (102) is stuck at the opening, and the rotating energy storage assembly (1) stops rotating to store energy. Then, the second RFID beacon chip (9) is lowered along with the cement slurry. The RFID reader antenna (207) receives the signal and connects to the second circuit board (607), unlocking the second high-temperature motor (606) to rotate. The ball valve (604) rotates to connect to the outside world and the cylinder pipe (60204). The piston push rod (601), supported by the lower support sleeve assembly (5), moves itself through the pressure difference at both ends and is fixed by a strong magnet (60203), causing the rigid straightening plate (301) and the straightening plate hinge rod (302) to unfold, implementing the first level of fixation on the rigid straightening plate (301). During the unfolding process, the telescopic support short rod (402) unfolds accordingly, implementing the second level of fixation on the rigid straightening plate (301), thereby achieving support for the sleeve (7). The second RFID beacon chip (9) carrying the information of activating the first circuit board (206) is pumped into the casing (7) along with the cement slurry. The RFID reader antenna (207) receives the information and then connects the first circuit board (206). The first high-temperature motor (205) is activated, driving the cylindrical slide (203) to rotate, causing the pawl (202) to move down relative to the ratchet (201). The one-way restriction is canceled, the vibration release component (2) is unlocked, and the centralizer vibrates under the rotation of the eccentric power blade (101), achieving the effect of vibration to improve the cementing quality.

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