Deep hole machining device of packer for oil drilling

Abstract

The invention discloses a deep hole machining device of a packer for oil drilling, and belongs to the technical field of oil drilling equipment machining. The deep hole machining device of the packer for oil drilling comprises a clamping mechanism and a power device, the clamping mechanism is used for clamping a sleeve shell of the packer, the deep hole machining device further comprises an elastic grinding ring, the outer wall of the elastic grinding ring is attached to the inner wall of the sleeve shell, the elastic grinding ring is used for grinding the inner wall of the sleeve shell, and the diameter of the elastic grinding ring is variable; the transmission shaft is connected with the elastic polishing ring; the multiple pressing blocks abut against the inner wall of the elastic grinding ring, and the pressing blocks are used for pressing the outer wall of the elastic grinding ring to the inner wall of the sleeve shell; and the adjusting mechanism is used for adjusting the distance between the multiple pressing blocks, so that the diameter of the elastic grinding ring is adjusted. According to the deep hole machining device of the packer for oil drilling, it can be guaranteed that the outer wall of the elastic grinding ring is fully attached to the inner wall of a pipe hole, so that the inner wall of a sleeve shell can be ground more evenly, and the surface precision of the inner wall of the sleeve shell after grinding is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of oil drilling equipment processing, in particular to a deep hole processing device for a packer used for oil drilling. Background Art

[0002] The packer plays an important role in oil extraction and other fields. It is used to isolate the annular space between the oil pipe and the oil and gas well casing or the open hole wall. The external structure of the packer is the casing. The processing quality of the inner wall of the casing directly affects the sealing performance and service life of the packer. Therefore, after the casing is processed, the inner wall of the casing needs to be polished. The inner wall polishing is a key process to ensure the quality of the inner wall of the deep casing. However, due to the structural characteristics of the deep casing, such as large depth and changes in inner diameter, the grinding of the inner wall of the casing faces many challenges.

[0003] The core components of the existing deep hole processing device for oil drilling packers include a clamping mechanism, a power device and a grinding head. The clamping mechanism is used to clamp the casing of the packer. The grinding head is connected to the power device and is driven by the power device to rotate, thereby grinding the inner hole of the casing of the packer.

[0004] In the deep hole processing device for the oil drilling packer of the present invention, when the grinding head is grinding the inner hole of the casing, since the inner hole of the casing is a stepped hole, it is difficult for the outer wall of the grinding head to fully fit with the inner wall of the pipe hole, resulting in low uniformity in the grinding of the inner wall of the casing, and it is difficult to ensure the surface accuracy of the inner wall of the casing after grinding. Summary of the invention

[0005] The purpose of the present invention is to overcome the problems in the prior art and to provide a deep hole processing device for a packer for oil drilling. When grinding the casing of the packer, it can ensure that the outer wall of the elastic grinding ring is fully fitted with the inner wall of the pipe hole, so that the inner wall of the casing can be polished more evenly, thereby ensuring the surface accuracy of the inner wall of the casing after grinding.

[0006] The present invention provides a deep hole processing device for a packer for oil drilling, comprising a clamping mechanism and a power device, wherein the clamping mechanism is used to clamp a casing of the packer, and further comprises:

[0007] An elastic grinding ring can be inserted into the casing, the outer wall of the elastic grinding ring is in contact with the inner wall of the casing, the elastic grinding ring is used to grind the inner wall of the casing, and the diameter of the elastic grinding ring is variable;

[0008] A transmission shaft, one end of which is connected to the power device, the transmission shaft is coaxially arranged with the casing, and the transmission shaft is connected to the elastic grinding ring;

[0009] A plurality of pressing blocks are arranged axially around the transmission shaft, each pressing block abuts against the inner wall of the elastic grinding ring, and the pressing block is used to press the outer wall of the elastic grinding ring against the inner wall of the casing;

[0010] An adjusting mechanism is connected to each pressing block, and is used to adjust the spacing between the multiple pressing blocks, thereby adjusting the diameter of the elastic grinding ring.

[0011] Preferably, the adjustment mechanism includes a spring coil, a left sleeve and a right sleeve, the spring coil is arranged outside the transmission shaft, the spring coil is connected to each pressure block, the spring coil is used to apply an elastic force to the multiple pressure blocks to approach each other, the left sleeve and the right sleeve are both connected to the transmission shaft, and the multiple pressure blocks are arranged between the left sleeve and the right sleeve, the left sleeve is provided with a left conical platform, and the right sleeve is provided with a right conical platform. Under the action of the elastic force of the spring coil, the left end of each pressure block is pressed against the side wall of the left conical platform, and the right end of each pressure block is pressed against the side wall of the right conical platform. When the left conical platform and the right conical platform approach each other, the spacing between the multiple pressure blocks increases.

[0012] Preferably, a first electromagnetic coil is provided on the left sleeve, and a second electromagnetic coil is provided on the right sleeve. The first electromagnetic coil and the second electromagnetic coil are both electrically connected to an electric control circuit. The first electromagnetic coil and the second electromagnetic coil are coaxially arranged. The first electromagnetic coil and the second electromagnetic coil attract each other when energized. The magnitude of the magnetic attraction between the first electromagnetic coil and the second electromagnetic coil can be changed by changing the magnitude of the current in the first electromagnetic coil and the second electromagnetic coil through the electric control circuit.

[0013] Preferably, a pressure sensor is provided on the pressing block, and the pressure sensor is electrically connected to the electric control circuit. The pressure sensor is used to detect the real-time extrusion force value applied by the pressing block to the inner wall of the elastic grinding ring. The pressure threshold is preset in the electric control circuit. The electric control circuit controls the magnitude of the current in the first electromagnetic coil and the second electromagnetic coil according to the real-time extrusion force value and the pressure threshold so that the real-time extrusion force value is equal to the pressure threshold.

[0014] Preferably, the left conical platform and the right conical platform are both provided with a limiting slide groove, a limiting slider is slidably connected in the limiting slide groove, the limiting slider is connected to the pressure block, and the limiting slide groove and the limiting slider are used to prevent the pressure block from rotating relative to the left conical platform or the right conical platform.

[0015] Preferably, the left conical table and the right conical table are both provided with a first through-axis hole, the transmission shaft passes through the first through-axis hole, the transmission shaft is provided with a second through-axis hole, a lead screw is rotatably connected in the second through-axis hole, the lead screw is coaxially arranged with the sleeve, a threaded hole is provided on the left sleeve or the right sleeve, the threaded hole is threadedly connected to the lead screw, a sliding groove is provided on the transmission shaft along its axial direction, a left slider and a right slider are slidably connected in the sliding groove, the left slider is connected to the left sleeve, and the right slider is connected to the right sleeve.

[0016] Preferably, a supporting mechanism is provided on the lower side of the casing, the supporting mechanism abuts against the outer wall of the casing, and the supporting mechanism is used to apply a vertical upward supporting force to the casing so that the casing and the transmission shaft always remain coaxial.

[0017] Preferably, the supporting mechanism comprises a V-shaped block and a lifting mechanism, the V-shaped surface of the V-shaped block abuts against the lower side of the outer wall of the casing, and the lifting mechanism is connected to the outer wall of the V-shaped block.

[0018] Preferably, a slide rail is provided at the bottom end of the lifting mechanism, and the length direction of the slide rail is parallel to the axial direction of the transmission shaft.

[0019] Preferably, the elastic grinding ring is detachably connected to the transmission shaft.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: a deep hole processing device for a packer for oil drilling of the present invention can adjust the diameter of the elastic grinding ring according to the stepped hole structure of the casing tube hole when grinding the casing of the packer, until the outer wall of the elastic grinding ring fits with the inner wall of the casing, and then control the action of the power device, the power device drives the transmission shaft to rotate, thereby driving the elastic grinding ring to rotate, and using the elastic grinding ring to grind the inner wall of the casing. When the diameter of the casing tube hole is reduced, the spacing between the multiple pressing blocks is reduced by the adjustment mechanism, and conversely, the diameter of the elastic grinding ring is reduced, so that the elastic grinding ring can grind the inner wall of the tube hole with a smaller diameter. The outer wall of the elastic grinding ring is fully fitted with the inner wall of the tube hole, so that the inner wall of the casing can be polished more evenly, ensuring the surface accuracy of the inner wall of the casing after grinding.

[0021] The adjustment mechanism of the device can accurately adjust the distance between the plurality of pressing blocks by adjusting the distance between the left conical platform and the right conical platform, thereby accurately adjusting the diameter of the elastic grinding ring, thereby ensuring that the outer wall of the elastic grinding ring can fully fit the inner wall of the casing, thereby ensuring the grinding effect of the entire device. By setting the first electromagnetic coil and the second electromagnetic coil and adjusting the magnitude of the current passed into the first electromagnetic coil and the second electromagnetic coil, the distance between the left sleeve and the right sleeve can be accurately adjusted, thereby accurately adjusting the distance between the left conical platform and the right conical platform, thereby realizing accurate adjustment of the diameter of the elastic grinding ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the AA surface structure of the present invention;

[0025] Figure 4 It is a schematic diagram of the BB surface structure of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the first electromagnetic coil of the present invention.

[0027] Description of reference numerals:

[0028] 101. Clamping mechanism, 102. Sleeve, 103. Elastic grinding ring, 104. Transmission shaft, 105. Pressing block, 106. Adjusting mechanism, 201. Spring ring, 202. Left sleeve, 203. Right sleeve, 204. Left conical table, 205. Right conical table, 301. First electromagnetic coil, 302. Second electromagnetic coil, 4. Pressure sensor, 501. Limiting slide groove, 502. Limiting slider, 601. Second through-shaft hole, 602. Lead screw, 603. Slide groove, 604. Left slider, 605. Right slider, 7. Support mechanism, 801. V-shaped block, 802. Lifting mechanism, 9. Slide rail. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-Figure 5 , the specific implementation of the present invention is described in detail, but it should be understood that the protection scope of the present invention is not limited by the specific implementation. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] like Figure 1-Figure 5 As shown, the present invention provides a deep hole processing device for a packer for oil drilling, comprising a clamping mechanism 101 and a power device, wherein the clamping mechanism 101 is used to clamp a casing 102 of the packer, and further comprises: an elastic grinding ring 103, a transmission shaft 104, an adjustment mechanism 106 and a plurality of pressing blocks 105, wherein the elastic grinding ring 103 can be inserted into the casing 102, wherein the outer wall of the elastic grinding ring 103 is in contact with the inner wall of the casing 102, and the elastic grinding ring 103 is used to grind the inner wall of the casing 102, and the diameter of the elastic grinding ring 103 is variable; the transmission shaft 104 is The end is connected to the power device, the transmission shaft 104 is coaxially arranged with the casing 102, and the transmission shaft 104 is connected to the elastic grinding ring 103; a plurality of pressing blocks 105 are axially arranged around the transmission shaft 104, each pressing block 105 abuts against the inner wall of the elastic grinding ring 103, and the pressing block 105 is used to press the outer wall of the elastic grinding ring 103 against the inner wall of the casing 102; an adjusting mechanism 106 is connected to each pressing block 105, and the adjusting mechanism 106 is used to adjust the spacing between the plurality of pressing blocks 105, thereby adjusting the diameter of the elastic grinding ring 103.

[0031] The working principle of the above embodiment is briefly described:

[0032] When the device is in use, the housing 102 of the divider to be polished is clamped by the clamping mechanism 101, and then the transmission shaft 104 is passed through the housing 102 to ensure that the transmission shaft 104 is coaxial with the housing 102, and the elastic polishing ring 103 is in the housing 102. By controlling the action of the adjustment mechanism 106, the adjustment mechanism 106 adjusts the spacing between the multiple pressing blocks 105. When the spacing between the multiple pressing blocks 105 increases, the multiple pressing blocks 105 drive the elastic polishing ring 103 to expand, thereby increasing the diameter of the elastic polishing ring 103. By adjusting the diameter of the elastic polishing ring 103 until the outer wall of the elastic polishing ring 103 fits the inner wall of the housing 102, and then controlling the action of the power device, the power device drives the transmission shaft 104 to rotate, thereby driving the elastic polishing ring 103 to rotate, and the inner wall of the housing 102 is polished by the elastic polishing ring 103. When the diameter of the tube hole of the casing 102 decreases, the spacing between the plurality of pressing blocks 105 is reduced by the adjusting mechanism 106, thereby reducing the diameter of the elastic grinding ring 103, so that the elastic grinding ring 103 can grind the inner wall of the tube hole with a smaller diameter.

[0033] The deep hole processing device of the oil drilling packer of the present invention can adjust its own size according to the stepped hole structure of the casing 102 pipe hole when grinding the casing 102 of the packer, ensuring that the outer wall of the elastic grinding ring 103 is fully fitted with the inner wall of the pipe hole, so that the inner wall of the casing 102 can be polished more evenly, ensuring the surface accuracy of the inner wall of the casing 102 after grinding.

[0034] On the basis of the above embodiment, in order to accurately adjust the diameter of the elastic grinding ring 103, it is ensured that the outer wall of the elastic grinding ring 103 can fully fit with the inner wall of the casing 102, thereby ensuring the grinding effect of the entire device.

[0035] like Figure 1 As shown, the adjustment mechanism 106 includes a spring ring 201, a left sleeve 202 and a right sleeve 203, wherein the spring ring 201 is arranged outside the transmission shaft 104, and the spring ring 201 is connected to each pressing block 105, and the spring ring 201 is used to apply elastic force to the multiple pressing blocks 105 to approach each other, and the left sleeve 202 and the right sleeve 203 are both connected to the transmission shaft 104, and the multiple pressing blocks 105 are arranged on the left sleeve 202 and the right sleeve 203. Between the sleeves 203, a left conical platform 204 is provided on the left sleeve 202, and a right conical platform 205 is provided on the right sleeve 203. Under the elastic force of the spring coil 201, the left end of each pressing block 105 is pressed against the side wall of the left conical platform 204, and the right end of each pressing block 105 is pressed against the side wall of the right conical platform 205. When the left conical platform 204 and the right conical platform 205 are close to each other, the distance between multiple pressing blocks 105 increases.

[0036] When adjusting the spacing between the multiple pressing blocks 105, by driving the left sleeve 202 and the right sleeve 203 to move closer to or farther from each other, when the left sleeve 202 and the right sleeve 203 move closer to each other, driven by the supporting force of the left cone 204 and the right cone 205, the multiple pressing blocks 105 are squeezed toward the side away from the axis of the transmission shaft 104, thereby increasing the spacing between the multiple pressing blocks 105 to increase the diameter of the elastic grinding ring 103. When the left sleeve 202 and the right sleeve 203 move away from each other, driven by the elastic force of the spring ring 201, the multiple pressing blocks 105 move closer to each other, thereby reducing the diameter of the elastic grinding ring 103. The adjustment mechanism 106 of the device can accurately adjust the distance between the multiple pressing blocks 105 by adjusting the distance between the left conical platform 204 and the right conical platform 205, so as to accurately adjust the diameter of the elastic grinding ring 103, thereby ensuring that the outer wall of the elastic grinding ring 103 can fully fit with the inner wall of the sleeve 102, thereby ensuring the grinding effect of the entire device.

[0037] As a preferred solution, Figure 1 As shown, the left sleeve 202 is provided with a first electromagnetic coil 301, and the right sleeve 203 is provided with a second electromagnetic coil 302. The first electromagnetic coil 301 and the second electromagnetic coil 302 are both electrically connected to an electric control circuit. The first electromagnetic coil 301 and the second electromagnetic coil 302 are coaxially arranged. The first electromagnetic coil 301 and the second electromagnetic coil 302 attract each other when energized. By changing the current in the first electromagnetic coil 301 and the second electromagnetic coil 302 by the electric control circuit, the magnetic attraction between the first electromagnetic coil 301 and the second electromagnetic coil 302 can be changed. When adjusting the spacing between the multiple pressing blocks 105, the current flowing into the first electromagnetic coil 301 and the second electromagnetic coil 302 is adjusted by controlling the electric control circuit. When the current flowing into the first electromagnetic coil 301 and the second electromagnetic coil 302 increases, the attraction between the first electromagnetic coil 301 and the second electromagnetic coil 302 increases, and the left sleeve 202 and the right sleeve 203 approach each other, so that the multiple pressing blocks 105 are separated from each other, and the diameter of the elastic grinding ring 103 increases. When the current flowing into the first electromagnetic coil 301 and the second electromagnetic coil 302 decreases, the attraction between the first electromagnetic coil 301 and the second electromagnetic coil 302 decreases, and under the action of the elastic force of the spring ring 201, the left sleeve 202 and the right sleeve 203 move away from each other, so that the plurality of pressing blocks 105 move closer to each other, and the diameter of the elastic grinding ring 103 decreases. By setting the first electromagnetic coil 301 and the second electromagnetic coil 302 and adjusting the magnitude of the current flowing into the first electromagnetic coil 301 and the second electromagnetic coil 302, the distance between the left sleeve 202 and the right sleeve 203 can be accurately adjusted, thereby accurately adjusting the distance between the left conical platform 204 and the right conical platform 205, thereby achieving accurate adjustment of the diameter of the elastic grinding ring 103.

[0038] As a preferred solution, Figure 1 As shown, a pressure sensor 4 is provided on the pressing block 105, and the pressure sensor 4 is electrically connected to the electric control circuit. The pressure sensor 4 is used to detect the real-time extrusion force value applied by the pressing block 105 to the inner wall of the elastic grinding ring 103. A pressure threshold is preset in the electric control circuit. The electric control circuit controls the magnitude of the current in the first electromagnetic coil 301 and the second electromagnetic coil 302 according to the real-time extrusion force value and the pressure threshold so that the real-time extrusion force value is equal to the pressure threshold. By setting the pressure sensor 4, when adjusting the diameter of the elastic grinding ring 103, when the spacing between the multiple pressing blocks 105 increases, the diameter of the elastic grinding ring 103 increases until the outer wall of the elastic grinding ring 103 contacts the inner wall of the casing 102, and the pressing blocks 105 squeeze the inner wall of the casing 102 through the elastic grinding ring 103. In this process, the pressure sensor 4 is used to detect the real-time squeezing force applied by the inner wall of the elastic grinding ring 103 in real time, so as to obtain the real-time squeezing force applied by the outer wall of the elastic grinding ring 103 to the inner wall of the casing 102. At this time, the electric control circuit controls the magnitude of the current in the first electromagnetic coil 301 and the second electromagnetic coil 302 according to the real-time squeezing force value and the pressure threshold applied by the outer wall of the elastic grinding ring 103 to the inner wall of the casing 102, so that the real-time squeezing force value applied by the outer wall of the elastic grinding ring 103 to the inner wall of the casing 102 is equal to the pressure threshold, thereby ensuring that the grinding force of the elastic grinding ring 103 on the inner wall of the casing 102 is constant, thereby ensuring the grinding effect of the entire device.

[0039] As a preferred solution, Figure 1 As shown, the left conical platform 204 and the right conical platform 205 are both provided with a limiting slide 501, and a limiting slider 502 is slidably connected in the limiting slide 501, and the limiting slider 502 is connected to the pressing block 105. The limiting slide 501 and the limiting slider 502 are used to prevent the pressing block 105 from rotating relative to the left conical platform 204 or the right conical platform 205. By providing the limiting slide 501 and the limiting slider 502, the left conical platform 204 and the right conical platform 205 drive the plurality of pressing blocks 105 to rotate through the limiting slide 501 and the limiting slider 502, thereby driving the elastic grinding rings 103 outside the plurality of pressing blocks 105 to rotate, and the inner wall of the casing 102 can be continuously polished.

[0040] As a preferred solution, Figure 1As shown, the left conical table 204 and the right conical table 205 are both provided with a first through-axis hole, the transmission shaft 104 passes through the first through-axis hole, the transmission shaft 104 is provided with a second through-axis hole 601, a lead screw 602 is rotatably connected in the second through-axis hole 601, the lead screw 602 is coaxially arranged with the sleeve 102, the left sleeve 202 or the right sleeve 203 is provided with a threaded hole, the threaded hole is threadedly connected with the lead screw 602, the transmission shaft 104 is provided with a slide groove 603 along its axial direction, a left slider 604 and a right slider 605 are slidably connected in the slide groove 603, the left slider 604 is connected to the left sleeve 202, and the right slider 605 is connected to the right sleeve 203. By setting the lead screw 602 and rotating the lead screw 602, under the action of the slide groove 603, the left slider 604 and the right slider 605, the lead screw 602 rotates relative to the left sleeve 202 and the right sleeve 203, so that the left sleeve 202 or the right sleeve 203 can be driven to move axially along the sleeve shell 102 through the threaded hole, thereby changing the axial position of the elastic grinding ring 103 in the sleeve shell 102, so that the device can grind the inner wall of the entire sleeve.

[0041] As a preferred solution, Figure 1 As shown, a support mechanism 7 is provided on the lower side of the casing 102, and the support mechanism 7 is in contact with the outer wall of the casing 102. The support mechanism 7 is used to apply a vertical upward support force to the casing 102, so that the casing 102 and the transmission shaft 104 always remain coaxial. By providing the support mechanism 7 and applying a vertical upward support force to the casing 102 by the support mechanism 7, the middle part of the casing 102 can be prevented from bending downward due to its own gravity, thereby ensuring that the transmission shaft 104 is always coaxial with the casing 102, thereby ensuring that the outer wall of the elastic grinding ring 103 is always in close contact with the inner wall of the casing 102, and ensuring the grinding effect of the entire device on the inner wall of the casing.

[0042] As a preferred solution, Figure 1 As shown, the support mechanism 7 includes a V-shaped block 801 and a lifting mechanism 802, wherein the V-shaped surface of the V-shaped block 801 abuts against the lower side of the outer wall of the casing 102, and the lifting mechanism 802 is connected to the outer wall of the V-shaped block 801. When the support mechanism 7 supports the casing 102, the V-shaped block 801 is driven to move upward by the lifting mechanism 802, and the V-shaped surface of the V-shaped block 801 applies a vertical upward supporting force to the outer wall of the casing 102, thereby supporting the middle part of the casing 102, and the V-shaped surface of the V-shaped block 801, when supporting the casing 102, will have a certain degree of centering for the casing 102, thereby further ensuring that the transmission shaft 104 is coaxial with the casing 102.

[0043] As a preferred solution, Figure 1As shown, a slide rail 9 is provided at the bottom end of the lifting mechanism 802, and the length direction of the slide rail 9 is parallel to the axial direction of the transmission shaft 104. By providing the slide rail 9, the lifting mechanism 802 can be driven to move along the axial direction of the casing 102 by the slide rail 9, so that different positions of the casing 102 can be supported, thereby ensuring the supporting function of the supporting mechanism 7 on the casing 102.

[0044] As a preferred solution, Figure 1 As shown, the elastic grinding ring 103 is detachably connected to the transmission shaft 104. The elastic grinding ring 103 and the transmission shaft 104 are detachably connected, which can facilitate the removal and installation of the elastic grinding ring 103, so that when the elastic grinding ring 103 is worn, it is convenient to replace the elastic grinding ring 103 to ensure the grinding effect of the entire device.

[0045] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A deep hole processing device for a packer for oil drilling, comprising a clamping mechanism (101) and a power device, wherein the clamping mechanism (101) is used to clamp a casing (102) of the packer, and is characterized in that: Also includes: An elastic grinding ring (103) can be inserted into the casing (102), the outer wall of the elastic grinding ring (103) is in contact with the inner wall of the casing (102), the elastic grinding ring (103) is used to grind the inner wall of the casing (102), and the diameter of the elastic grinding ring (103) is variable; A transmission shaft (104), one end of which is connected to the power device, the transmission shaft (104) is coaxially arranged with the casing (102), and the transmission shaft (104) is connected to the elastic grinding ring (103); A plurality of pressing blocks (105) are axially arranged around the transmission shaft (104), each pressing block (105) abuts against the inner wall of the elastic grinding ring (103), and the pressing block (105) is used to press the outer wall of the elastic grinding ring (103) against the inner wall of the sleeve (102); An adjusting mechanism (106) is connected to each pressing block (105), and the adjusting mechanism (106) is used to adjust the spacing between the plurality of pressing blocks (105), thereby adjusting the diameter of the elastic grinding ring (103).

2. The deep hole processing device for a packer for oil drilling according to claim 1, characterized in that: The adjusting mechanism (106) comprises a spring ring (201), a left sleeve (202) and a right sleeve (203); the spring ring (201) is arranged outside the transmission shaft (104); the spring ring (201) is connected to each pressing block (105); the spring ring (201) is used to apply elastic force to the plurality of pressing blocks (105) to move them closer to each other; the left sleeve (202) and the right sleeve (203) are both connected to the transmission shaft (104); the plurality of pressing blocks (105) are arranged on the left sleeve (202) and the right sleeve (203); The left sleeve (202) is provided with a left conical platform (204), and the right sleeve (203) is provided with a right conical platform (205). Under the action of the elastic force of the spring coil (201), the left end of each pressing block (105) is pressed against the side wall of the left conical platform (204), and the right end of each pressing block (105) is pressed against the side wall of the right conical platform (205). When the left conical platform (204) and the right conical platform (205) are close to each other, the distance between the multiple pressing blocks (105) increases.

3. The deep hole processing device for a packer for oil drilling according to claim 2, characterized in that: The left sleeve (202) is provided with a first electromagnetic coil (301), and the right sleeve (203) is provided with a second electromagnetic coil (302). The first electromagnetic coil (301) and the second electromagnetic coil (302) are both electrically connected to an electric control circuit. The first electromagnetic coil (301) and the second electromagnetic coil (302) are coaxially arranged. When the first electromagnetic coil (301) and the second electromagnetic coil (302) are energized, they attract each other. By changing the magnitude of the current in the first electromagnetic coil (301) and the second electromagnetic coil (302) through the electric control circuit, the magnitude of the magnetic attraction between the first electromagnetic coil (301) and the second electromagnetic coil (302) can be changed.

4. The deep hole processing device for a packer for oil drilling according to claim 3, characterized in that: The pressing block (105) is provided with a pressure sensor (4), and the pressure sensor (4) is electrically connected to the electric control circuit. The pressure sensor (4) is used to detect the real-time extrusion pressure value applied by the pressing block (105) to the inner wall of the elastic grinding ring (103). A pressure threshold is preset in the electric control circuit. The electric control circuit controls the magnitude of the current in the first electromagnetic coil (301) and the second electromagnetic coil (302) according to the real-time extrusion pressure value and the pressure threshold, so that the real-time extrusion pressure value is equal to the pressure threshold.

5. The deep hole processing device for a packer for oil drilling according to claim 2, characterized in that: The left conical platform (204) and the right conical platform (205) are both provided with a limiting slide groove (501), a limiting slider (502) is slidably connected in the limiting slide groove (501), and the limiting slider (502) is connected to the pressing block (105). The limiting slide groove (501) and the limiting slider (502) are used to prevent the pressing block (105) from rotating relative to the left conical platform (204) or the right conical platform (205).

6. The deep hole processing device for a packer for oil drilling according to claim 2, characterized in that: The left conical platform (204) and the right conical platform (205) are both provided with a first through-axis hole, the transmission shaft (104) passes through the first through-axis hole, the transmission shaft (104) is provided with a second through-axis hole (601), a lead screw (602) is rotatably connected in the second through-axis hole (601), the lead screw (602) is coaxially arranged with the sleeve (102), the left sleeve (202) or the right sleeve (203) is provided with a threaded hole, the threaded hole is threadedly connected with the lead screw (602), the transmission shaft (104) is provided with a sliding groove (603) along the axial direction thereof, a left slider (604) and a right slider (605) are slidably connected in the sliding groove (603), the left slider (604) is connected with the left sleeve (202), and the right slider (605) is connected with the right sleeve (203).

7. The deep hole processing device for a packer for oil drilling according to claim 1, characterized in that: A support mechanism (7) is provided on the lower side of the casing (102), and the support mechanism (7) abuts against the outer wall of the casing (102). The support mechanism (7) is used to apply a vertical upward support force to the casing (102) so that the casing (102) and the transmission shaft (104) always remain coaxial.

8. The deep hole processing device for a packer for oil drilling according to claim 7, characterized in that: The support mechanism (7) comprises a V-shaped block (801) and a lifting mechanism (802), wherein the V-shaped surface of the V-shaped block (801) abuts against the lower side of the outer wall of the casing (102), and the lifting mechanism (802) is connected to the outer wall of the V-shaped block (801).

9. The deep hole processing device for a packer for oil drilling according to claim 8, characterized in that: A slide rail (9) is provided at the bottom end of the lifting mechanism (802), and the length direction of the slide rail (9) is parallel to the axial direction of the transmission shaft (104).

10. The deep hole processing device for a packer for oil drilling according to claim 1, characterized in that: The elastic grinding ring (103) is detachably connected to the transmission shaft (104).

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