A cavity processing device for a petroleum non-magnetic resistivity drill collar and a processing method thereof

Abstract

The present application relates to a kind of cavity processing device of petroleum non-magnetic resistivity drill collar, comprising: base, the fixing mechanism for fixing drill collar is equipped on the base, locking mechanism is equipped on the fixing mechanism;Drive mechanism is arranged on the surface of the base, polishing assembly for the polishing of drill collar cavity is cooperated with drive mechanism, and stability mechanism for increasing the stability of polishing assembly work, drive mechanism includes: mounting bracket is arranged on the surface of the base, fixed box is arranged on the mounting bracket, drive motor is arranged in the fixed box, and transmission shaft is arranged on the output shaft of drive motor.The cavity processing device of petroleum non-magnetic resistivity drill collar is composed of multiple different mechanisms and components, so that it is simple in structure, easy to use, low in production cost, easy to use in small factory, and greatly reduces the labor intensity of workers, improves the processing efficiency of drill collar.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drill collar processing, in particular to a cavity processing device for oil non-magnetic resistivity drill collar and a processing method thereof. BACKGROUND

[0002] The drill collar is located at the lowermost part of the drill string and is the main component of the lower drill tool assembly. Its main feature is a large wall thickness (generally 38 to 53 mm, which is four to six times the wall thickness of the drill pipe), a large gravity and rigidity. In order to facilitate the tripping operation, a hook slot and a slip slot can be processed on the outer surface of the internal thread of the drill collar.

[0003] Non-magnetic steel is also called non-magnetic steel and non-magnetic steel. In fact, it refers to steel that cannot be magnetized without ferromagnetic properties. The non-magnetic resistivity drill collar is made of non-magnetic steel. After production, the inner wall of the cavity needs to be polished using a polishing device.

[0004] The existing drill collar is large in size, and the inner wall of the cavity is usually polished using a large machine tool. However, the versatility of the large machine tool is low, the occupied space is large, the cost is high, and it is not convenient for small drill collar production plants to use. Some small factories use manual polishing, but the large size of the drill collar affects the polishing efficiency and increases the labor intensity of the workers. SUMMARY

[0005] To solve the above technical problems, the present application provides a cavity processing device for oil non-magnetic resistivity drill collar and a processing method thereof, which has the advantages of small occupied space, simple structure, low cost and reducing the labor intensity of workers.

[0006] To achieve the above purpose, the technical scheme of the present application is as follows:

[0007] A cavity processing device for oil non-magnetic resistivity drill collar, comprising:

[0008] A base is provided with a fixing mechanism for fixing the drill collar, and the fixing mechanism is provided with a locking mechanism;

[0009] A driving mechanism is provided on the surface of the base, a polishing assembly for polishing the cavity of the drill collar is cooperated with the driving mechanism, and a stabilizing mechanism is used to increase the stability of the polishing assembly during work;

[0010] The driving mechanism comprises a mounting bracket provided on the surface of the base, a fixed box provided on the mounting bracket, a driving motor provided in the fixed box, and a transmission shaft provided on the output shaft of the driving motor;

[0011] The polishing assembly comprises a transmission block arranged at the other end of the transmission shaft, a fixing frame fixed to the inner wall of the transmission block, a threaded screw rod rotationally connected with the fixing frame, a screw rod sleeve threadedly connected to the outer surface of the threaded screw rod, a moving sleeve arranged on the outer surface of the screw rod sleeve and extending to the outside of the transmission block, and a polishing head arranged at the other end of the moving sleeve.

[0012] The stabilizing mechanism comprises a bearing sleeve fixedly arranged on the outer surface of the transmission shaft, an electric telescopic rod arranged around the bearing sleeve, a fixing plate arranged at the output end of the electric telescopic rod, and a roller set arranged outside the fixing plate.

[0013] The above technical solutions are implemented, the fixing mechanism can place and support the drill collar body, the locking mechanism can lock the fixing mechanism, the drill collar body is fixed by the fixing mechanism, the cavity of the drill collar is conveniently polished, the driving mechanism can control the working of the polishing assembly, the inner wall of the drill collar is polished when the polishing assembly extends into the inner cavity of the drill collar, and the stability of the polishing assembly during working is maintained by the arrangement of the stabilizing mechanism, so that the polishing assembly is not easily shaken and the polishing precision is affected.

[0014] When the driving motor works, the transmission shaft is driven to rotate, the polishing assembly is driven to rotate when the transmission shaft rotates, and the inner wall of the drill collar is polished by the polishing assembly, the screw rod sleeve is driven to move by threads when the threaded screw rod rotates, the moving sleeve is driven to move when the screw rod sleeve moves, the polishing head is moved, the polishing assembly can be adaptively adjusted according to the inner wall size of different drill collars, the application range of the polishing assembly is wider, the fixing plate is driven to move by the electric telescopic rod when the electric telescopic rod works, the roller set is attached to the inner wall of the drill collar, the bearing sleeve is prevented from rotating synchronously with the transmission shaft when the transmission shaft rotates, the bearing sleeve is supported by the electric telescopic rod, the fixing plate and the roller set, the transmission shaft is supported, and the stability of the longer transmission shaft during rotation is increased, so that the polishing deviation of the polishing assembly at the other end of the transmission shaft due to shaking is prevented.

[0015] As a preferred scheme of the present application, the surface of the base is transversely provided with sliding rails, the sliding rails are provided in two groups, and a sliding block fixedly connected with the mounting frame is slidably arranged between the two groups of sliding rails.

[0016] The above technical solutions are implemented, the sliding rails and the sliding block can enable the mounting frame to move, the polishing assembly at the other end of the transmission shaft can be extended into the inside of the drill collar when the mounting frame is pushed by the operator, and the inner wall of the drill collar is polished.

[0017] As a preferred scheme of the present application, the electric telescopic rods are provided in multiple groups, and each group of electric telescopic rods is annularly distributed on the outer surface of the bearing sleeve.

[0018] The electric telescopic rod arranged in a ring shape can further increase the support on the bearing sleeve and increase the stability when the transmission shaft rotates.

[0019] According to a preferred embodiment of the present application, the electric telescopic rod is provided with a sliding sleeve fixedly connected with the bearing sleeve on both sides, and the bottom of the fixed plate is provided with a sliding rod slidingly connected with the sliding sleeve on both sides.

[0020] The sliding sleeve can make the sliding rod slide in the sliding sleeve, thereby limiting the movement of the fixed plate and providing certain rigidity when preventing the rotation of the bearing sleeve.

[0021] According to a preferred embodiment of the present application, the other end of the threaded screw rod is fixedly connected with a first bevel gear, and the inside of the transmission block is rotatably provided with a second bevel gear meshingly connected with the first bevel gear.

[0022] When the second bevel gear rotates, the first bevel gear is driven to rotate, and when the first bevel gear rotates, the threaded screw rod is driven to rotate, thereby controlling the movement of the polishing head.

[0023] According to a preferred embodiment of the present application, the rear side of the transmission block is fixedly connected with a transmission chamber, the inside of the transmission chamber is provided with a servo motor, and the output shaft of the servo motor is fixedly connected with the second bevel gear through a transmission rod.

[0024] When the servo motor works, the second bevel gear can be driven to rotate through the transmission rod, automatic control can be realized, and the operation difficulty is reduced.

[0025] According to a preferred embodiment of the present application, the two sides of the moving sleeve are fixedly connected with sliding strips, the surface of the transmission block is provided with a sliding groove slidingly connected with the sliding strips, the other end of the moving sleeve is fixedly connected with a threaded column, and one side of the polishing head is provided with a threaded sleeve threadedly connected with the threaded column.

[0026] According to the above technical solution, since the sliding groove and the sliding strip are slidingly connected, the screw rod sleeve can be prevented from rotating synchronously with the threaded screw rod, thereby playing a limiting role.

[0027] According to a preferred embodiment of the present application, the transmission shaft is spliced by a plurality of connecting assemblies, the connecting assemblies include a plug provided at one end of the transmission shaft, a plug groove provided at the other end of the transmission shaft and mutually clamped with the plug, a connecting sleeve fixedly provided at one end of the transmission shaft, a fixing bolt provided on the connecting sleeve and used for fixing another group of transmission shafts, a limiting strip provided on the outer surface of the plug, and a limiting groove provided on the inner wall of the plug groove and slidingly connected with the limiting strip.

[0028] The transmission shaft can be extended by the multiple connecting assemblies, the length of the transmission shaft can be adjusted according to the length of the drill collar, and the practicability is improved.

[0029] The plug can be inserted into the interior of the slot, and then one end of the transmission shaft is located in the interior of the connecting sleeve, and then the two transmission shafts can be spliced by the fixing bolt, and the limiting strip and the limiting groove can play a role of preliminary positioning.

[0030] As a preferred scheme of the present application, the fixing mechanism comprises a lower support frame arranged on the base, an upper support frame arranged at the other end of the lower support frame, a rubber abutting block arranged on the inner wall of the lower support frame and the upper support frame, a plug rod arranged at one side of the upper support frame, and a limiting sleeve arranged at one side of the lower support frame for clamping the plug rod. The locking mechanism comprises a transmission cavity arranged in the inner cavity of the bottom of the plug rod, a partition plate arranged at the bottom of the inner cavity of the transmission cavity, a slide rod frame arranged at both sides of the partition plate, a slide plate in sliding connection with the slide rod frame, a fixing rod arranged at the outer side of the slide plate, a clamping block arranged at the other end of the fixing rod, a reset spring arranged at the inner side of the slide plate and fixedly connected with the partition plate, a connecting rod fixedly connected with the slide plate, and a handle arranged at the bottom of the connecting rod.

[0031] According to the above technical scheme, the drill collar can be placed on the lower support frame, and then the upper support frame is rotated to cover the drill collar, and the inner wall of the drill collar is abutted by the rubber abutting block, and the plug rod is inserted into the interior of the limiting sleeve. When the plug rod is inserted into the interior of the limiting sleeve, the outer side of the clamping block is abutted by the inner wall of the limiting sleeve, so that the clamping block enters the interior of the transmission cavity. When the bottom end of the plug rod completely penetrates the limiting sleeve, the clamping block is reset by the elastic deformation of the reset spring due to the disappearance of the abutting force, so that the top of the clamping block abuts against the bottom of the limiting sleeve, thereby completing the locking action. The operation is simple and convenient, and when the operators pull the handles to move closer to each other, the clamping block can be driven to re-enter the interior of the transmission cavity, so that the locking is released, and the processed drill collar can be taken out.

[0032] The method comprises the following steps: S1, fixing the drill collar: the drill collar body is fixed by the fixing mechanism and the locking mechanism;

[0033] S2, adjusting the polishing assembly: the position of the polishing head is adjusted by the work of the servo motor, so that the polishing head can be in close contact with the inner wall of the drill collar;

[0034] S3, polishing the cavity: the worker starts the driving motor and pushes the mounting frame to move, so that the polishing assembly rotates to enter the inner cavity of the drill collar to perform the polishing work.

[0035] In summary, the present application has the following advantages:

[0036] The embodiment of the present application provides a cavity processing device and method for a petroleum non-magnetic resistance collar, the collar body can be placed and supported through a fixing mechanism, the fixing mechanism can be locked through a locking mechanism, so that the collar body is fixed through the fixing mechanism, the subsequent cavity polishing of the collar is facilitated, the working of the polishing assembly can be controlled through a driving mechanism, when the polishing assembly extends into the inner cavity of the collar, the inner wall polishing of the collar can be realized, and the stability of the polishing assembly during working can be maintained through the arrangement of a stabilizing mechanism, so that the polishing assembly cannot easily shake and the polishing precision is affected, the device is composed of multiple different mechanisms and components, so that the device is simple in structure, convenient to use, low in production cost, convenient for universal use of small factories, and greatly reduces the labor intensity of workers and improves the processing efficiency of the collar. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0038] Figure 1 It is a structural front view of the present application.

[0039] Figure 2 It is a structural side view of the lower support frame and the upper support frame of the present application.

[0040] Figure 3 It is a structural side view of the polishing assembly of the present application.

[0041] Figure 4 It is a structural cross-sectional view of the transmission shaft connection of the present application.

[0042] Figure 5 It is a structural enlarged view of B in the present application. Figure 2

[0043] It is a structural enlarged view of A in the present application. Figure 6 Figure 1

[0044] Corresponding component names represented by numbers and letters in the figure:

[0045] ​​1, base; 11, lower support frame; 12, upper support frame; 13, rubber block; 14, plug rod; 15, limit sleeve; 16, slide rail; 17, sliding block; 2, mounting frame; 21, fixed box; 22, drive motor; 23, transmission shaft; 24, bearing sleeve; 25, electric telescopic rod; 26, fixed plate; 27, roller group; 28, sliding sleeve; 29, sliding rod; 3, transmission block; 31, threaded screw; 32, screw sleeve; 33, moving sleeve; 34, polishing head; 35, first bevel gear; 36, second bevel gear; 37, fixed frame; 38, transmission chamber; 39, servo motor; 4, slide bar; 41, slide groove; 42, threaded column; 43, threaded sleeve; 5, plug; 51, plug slot; 52, connecting sleeve; 53, fixed bolt; 54, limiting strip; 55, limiting groove; 6, transmission cavity; 61, partition; 62, slide rod frame; 63, slide plate; 64, fixed rod; 65, clamping block; 66, return spring; 67, connecting rod; 68, handle. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0047] EMBODIMENT

[0048] A cavity processing device for a petroleum non-magnetic resistance drill collar, such as Figures 1 to 6 , comprising: a base 1, a fixing mechanism for fixing the drill collar is arranged on the base 1, and a locking mechanism is arranged on the fixing mechanism; a driving mechanism arranged on the surface of the base 1, a polishing assembly for polishing the cavity of the drill collar matched with the driving mechanism, and a stabilizing mechanism for increasing the stability of the polishing assembly during work; the driving mechanism comprises: a mounting frame 2 arranged on the surface of the base 1, a fixed box 21 arranged on the mounting frame 2, a drive motor 22 arranged in the fixed box 21, and a transmission shaft 23 arranged on the output shaft of the drive motor 22; the polishing assembly comprises: a transmission block 3 arranged at the other end of the transmission shaft 23, a fixed frame 37 fixed to the inner wall of the transmission block 3, a threaded screw 31 rotationally connected with the fixed frame 37, a screw sleeve 32 threadedly connected to the outer surface of the threaded screw 31, a moving sleeve 33 arranged on the outer surface of the screw sleeve 32 and extending to the outside of the transmission block 3, and a polishing head 34 arranged at the other end of the moving sleeve 33; the stabilizing mechanism comprises: a bearing sleeve 24 fixedly arranged on the outer surface of the transmission shaft 23, an electric telescopic rod 25 arranged around the bearing sleeve 24, a fixed plate 26 arranged at the output end of the electric telescopic rod 25, and a roller group 27 arranged on the outer side of the fixed plate 26.

[0049] Specifically, the fixed mechanism can be used to place and support the drill collar body, and then the locking mechanism can be used to lock the fixed mechanism, so that the fixed mechanism can be used to fix the drill collar body, which is convenient for subsequent cavity polishing of the drill collar. The driving mechanism can control the working of the polishing assembly. When the polishing assembly extends into the inner cavity of the drill collar, the inner wall of the drill collar can be polished. The setting of the stabilizing mechanism can keep the stability of the polishing assembly when it works, so that the polishing assembly will not easily shake and affect the polishing precision.

[0050] When the driving motor 22 works, it will drive the transmission shaft 23 to rotate. When the transmission shaft 23 rotates, it will drive the polishing assembly to rotate, so that the inner wall of the drill collar can be polished by the polishing assembly. When the threaded screw rod 31 rotates, it will drive the screw sleeve 32 to move through the thread. When the screw sleeve 32 moves, it will drive the moving sleeve 33 to move, so that the polishing head 34 moves, and the polishing assembly can be adaptively adjusted according to the size of the inner wall of different drill collars, so that the application range of the polishing assembly is wider. When the electric telescopic rod 25 works, it will drive the fixed plate 26 to move, so that the roller set 27 is attached to the inner wall of the drill collar. When the transmission shaft 23 rotates, the bearing sleeve 24 will not rotate synchronously, and the bearing sleeve 24 will be supported by the electric telescopic rod 25, the fixed plate 26 and the roller set 27, so that the transmission shaft 23 is supported, and the stability of the longer transmission shaft 23 can be increased when it rotates, so that the polishing deviation of the polishing assembly at the other end of the transmission shaft 23 caused by shaking can be prevented.

[0051] The surface of the base 1 is transversely provided with the slide rails 16. The slide rails 16 are provided with two groups, and the slide rails 16 between the two groups are slidably provided with the sliding blocks 17 fixedly connected with the mounting frame 2.

[0052] The slide rails 16 and the sliding blocks 17 can make the mounting frame 2 have the ability to move. When the operator pushes the mounting frame 2, the polishing assembly at the other end of the transmission shaft 23 can be driven to extend into the inside of the drill collar, so that the inner wall of the drill collar can be polished.

[0053] The electric telescopic rod 25 is provided with multiple groups, and each group of the electric telescopic rod 25 is annularly distributed on the outer surface of the bearing sleeve 24.

[0054] The annularly arranged electric telescopic rod 25 can further increase the support of the bearing sleeve 24 and increase the stability of the transmission shaft 23 when it rotates.

[0055] The two sides of the electric telescopic rod 25 are provided with the sliding sleeves 28 fixedly connected with the bearing sleeve 24, and the two sides of the bottom of the fixed plate 26 are provided with the sliding rods 29 slidably connected with the sliding sleeves 28.

[0056] The sliding sleeves 28 can make the sliding rods 29 slide in the sliding sleeves 28, so as to limit the movement of the fixed plate 26 and provide certain rigidity when preventing the rotation of the bearing sleeve 24.

[0057] The other end of the threaded screw rod 31 is fixedly connected with a first bevel gear 35, and the inside of the transmission block 3 is rotatably provided with a second bevel gear 36 which is in meshing connection with the first bevel gear 35.

[0058] When the second bevel gear 36 rotates, the first bevel gear 35 will be driven to rotate, so as to control the movement of the polishing head 34.

[0059] The rear side of the transmission block 3 is fixedly connected with a transmission chamber 38, and the inside of the transmission chamber 38 is provided with a servo motor 39, and the output shaft of the servo motor 39 is fixedly connected with the second bevel gear 36 through a transmission rod.

[0060] When the servo motor 39 works, the second bevel gear 36 can be driven to rotate through the transmission rod, so as to realize automatic control and reduce the operation difficulty.

[0061] The two sides of the moving sleeve 33 are fixedly connected with sliding bars 4, and the surface of the transmission block 3 is provided with sliding grooves 41 which are in sliding connection with the sliding bars 4, and the other end of the moving sleeve 33 is fixedly connected with a threaded column 42, and one side of the polishing head 34 is provided with a threaded sleeve 43 which is in threaded connection with the threaded column 42.

[0062] Since the sliding grooves 41 are in sliding connection with the sliding bars 4, the screw rod sleeve 32 can be prevented from rotating synchronously with the threaded screw rod 31, thereby playing a limiting role.

[0063] The transmission shaft 23 is spliced by a plurality of connecting assemblies, and the connecting assemblies comprise: a plug 5 arranged at one end of the transmission shaft 23, a plug groove 51 arranged at the other end of the transmission shaft 23 and in interlocking connection with the plug 5, a connecting sleeve 52 fixedly sleeved at one end of the transmission shaft 23, a fixing bolt 53 arranged on the connecting sleeve 52 and used for fixing another set of transmission shafts 23, a limiting strip 54 arranged on the outer surface of the plug 5, and a limiting groove 55 arranged on the inner wall of the plug groove 51 and in sliding connection with the limiting strip 54.

[0064] Since the transmission shaft 23 is spliced by a plurality of connecting assemblies, the length of the transmission shaft 23 can be extended by the connecting assemblies, and the length of the transmission shaft 23 can be adaptively adjusted according to the length of the drill collar, thereby improving the practicability.

[0065] The plug 5 can be inserted into the inside of the plug groove 51, and after insertion, one end of the transmission shaft 23 will be located in the inside of the connecting sleeve 52, and then the two transmission shafts 23 can be spliced by the fixing bolt 53, and the limiting strip 54 and the limiting groove 55 can play a role of preliminary positioning.

[0066] The fixing mechanism comprises a lower support frame 11 arranged on the base 1, an upper support frame 12 arranged at the other end of the lower support frame 11, a rubber abutting block 13 arranged on the inner wall of the lower support frame 11 and the upper support frame 12, a plug rod 14 arranged at one side of the upper support frame 12, and a limiting sleeve 15 arranged at one side of the lower support frame 11 for clamping the plug rod 14, and the locking mechanism comprises a transmission cavity 6 arranged in the inner cavity of the bottom of the plug rod 14, a partition plate 61 arranged in the inner cavity of the transmission cavity 6, a slide rod frame 62 arranged at both sides of the partition plate 61, a slide plate 63 in sliding connection with the slide rod frame 62, a fixing rod 64 arranged at the outer side of the slide plate 63, a clamping block 65 arranged at the other end of the fixing rod 64, a reset spring 66 arranged at the inner side of the slide plate 63 and fixedly connected with the partition plate 61, a connecting rod 67 fixedly connected with the slide plate 63, and a handle 68 arranged at the bottom of the connecting rod 67.

[0067] The drill collar can be placed on the lower support frame 11, and then the upper support frame 12 is rotated to cover the drill collar, and the inner wall of the drill collar is abutted by the rubber abutting block 13, and the plug rod 14 is inserted into the inside of the limiting sleeve 15, when the plug rod 14 is inserted into the inside of the limiting sleeve 15, the outer side of the clamping block 65 is abutted by the inner wall of the limiting sleeve 15, so that the clamping block 65 enters into the inside of the transmission cavity 6, when the bottom end of the plug rod 14 completely penetrates the limiting sleeve 15, the clamping block 65 is reset by the elastic deformation of the reset spring 66 due to the disappearance of the abutting force, so that the top of the clamping block 65 abuts the bottom of the limiting sleeve 15, thereby completing the locking action, which is simple to operate and convenient to use, and when the operator pulls the handle 68 to move closer to each other, the clamping block 65 is driven to re-enter the inside of the transmission cavity 6, so that the locking is released, and the processed drill collar is taken out.

[0068] The processing method of the oil non-magnetic resistivity drill collar cavity comprises the following steps: S1, fixing the drill collar: fixing the drill collar body by using the fixing mechanism and the locking mechanism; S2, adjusting the polishing assembly: adjusting the position of the polishing head 34 by using the work of the servo motor 39, so that the polishing head 34 can just fit the inner wall of the drill collar; S3, cavity polishing: the worker starts the driving motor 22 and pushes the mounting frame 2 to move, so that the polishing assembly rotates into the inner cavity of the drill collar to perform the polishing work.

[0069] The working principle is that first, the drill collar body is placed in the lower support frame 11, then the upper support frame 12 is rotated to cover the surface of the drill collar, and the insertion rod 14 is inserted into the inside of the limiting sleeve 15, when the insertion rod 14 is inserted into the inside of the limiting sleeve 15, the outer side of the clamping block 65 is abutted by the inner wall of the limiting sleeve 15, so that the clamping block 65 enters the inside of the transmission cavity 6, when the bottom end of the insertion rod 14 completely penetrates the limiting sleeve 15, the clamping block 65 is reset by the elastic deformation of the reset spring 66, so that the top of the clamping block 65 abuts against the bottom of the limiting sleeve 15, thereby completing the locking action, then the servo motor 39 is started, when the servo motor 39 works, the second bevel gear 36 is driven to rotate, when the second bevel gear 36 rotates, the first bevel gear 35 is driven to rotate, when the first bevel gear 35 rotates, the threaded lead screw 31 is driven to rotate, when the threaded lead screw 31 rotates, the lead screw sleeve 32 is driven to move through the screw thread, when the lead screw sleeve 32 moves, the moving sleeve 33 is driven to move, so that the polishing head 34 moves, so that the polishing assembly can be adaptively adjusted according to the inner wall size of different drill collars, then the electric telescopic rod 25 is started, so that the roller set 27 can enter the inner cavity of the drill collar and be attached to the inner wall of the drill collar, then the driving motor 22 is started, when the driving motor 22 works, the transmission shaft 23 is driven to rotate, when the transmission shaft 23 rotates, the transmission block 3 is driven to rotate, when the transmission block 3 rotates, the inner wall of the drill collar can be polished by the polishing head 34.

[0070] In summary, the present application has the following advantages:

[0071] The cavity processing device for the oil non-magnetic resistivity drill collar and the processing method thereof have the following advantages: the drill collar body can be placed and supported by the fixing mechanism, the fixing mechanism can be locked by the locking mechanism, so that the drill collar body is fixed by the fixing mechanism, the drill collar is conveniently polished in the cavity, the driving mechanism can control the working of the polishing assembly, when the polishing assembly is inserted into the inner cavity of the drill collar, the inner wall of the drill collar can be polished, the stability of the polishing assembly during working can be maintained by the setting of the stabilizing mechanism, so that the polishing assembly is not easily shaken, the polishing precision is not affected, the device is composed of multiple different mechanisms and assemblies, so that the structure is simple, the use is convenient, the production cost is low, the device is convenient for universal use in small factories, the labor intensity of workers is greatly reduced, and the processing efficiency of the drill collar is improved.

[0072] The foregoing description of the disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cavity processing device for a non-magnetic resistivity collar for oil, characterized by, The utility model provides a kind of drilling collar polishing device, including: Base, the fixed mechanism for fixing drill collar is equipped on the base, and the locking mechanism is equipped on the fixed mechanism; Driving mechanism arranged on the surface of the base, polishing assembly for polishing drill collar cavity cooperated with the driving mechanism, and stabilizing mechanism for increasing the stability of polishing assembly during work; The driving mechanism includes: mounting bracket arranged on the surface of the base, fixed box arranged on the mounting bracket, driving motor arranged in the fixed box, and transmission shaft arranged on the output shaft of the driving motor; The polishing assembly includes: transmission block arranged on the other end of the transmission shaft, fixed frame fixed to the inner wall of the transmission block, threaded screw rod rotatably connected with the fixed frame, screw rod sleeve threadedly connected to the outer surface of the threaded screw rod, moving sleeve arranged on the outer surface of the screw rod sleeve and extending to the outside of the transmission block, and polishing head arranged on the other end of the moving sleeve; The stabilizing mechanism includes: bearing sleeve fixedly arranged on the outer surface of the transmission shaft, electric telescopic rod arranged around the bearing sleeve, fixed plate arranged on the output end of the electric telescopic rod, and roller set arranged on the outer side of the fixed plate; The fixed mechanism includes: lower support frame arranged on the base, upper support frame arranged on the other end of the lower support frame, rubber contact block arranged on the inner wall of the lower support frame and the upper support frame, insertion rod arranged on one side of the upper support frame, and limiting sleeve arranged on one side of the lower support frame for clamping the insertion rod, the locking mechanism includes: transmission cavity arranged in the inner cavity of the bottom of the insertion rod, partition plate arranged in the inner cavity of the bottom of the transmission cavity, slide rod holder arranged on both sides of the partition plate, slide plate slidably connected with the slide rod holder, fixed rod arranged on the outer side of the slide plate, clamping block arranged on the other end of the fixed rod, return spring fixedly connected with the partition plate and arranged on the inner side of the slide plate, connecting rod fixedly connected with the slide plate, and handle arranged on the bottom of the connecting rod.

2. The apparatus for machining the cavity of the petroleum non-magnetic resistivity collar of claim 1, wherein, The surface of the base is transversely provided with slide rails, the slide rails are provided in two groups, and the slide blocks fixedly connected with the mounting bracket are slidably arranged between the two groups of slide rails.

3. The apparatus for machining the cavity of the petroleum non-magnetic resistivity collar of claim 1, wherein, Each group of electric telescopic rods is annularly distributed on the outer surface of the bearing sleeve.

4. The apparatus for machining the cavity of the petroleum non-magnetic collar of claim 1, wherein, The electric telescopic rods are provided with slide sleeves fixedly connected with the bearing sleeve on both sides, and the slide rods slidably connected with the slide sleeves are arranged on both sides of the bottom of the fixed plate.

5. The apparatus for machining the cavity of the petroleum non-magnetic collar of claim 1, wherein, The other end of the threaded screw rod is fixedly connected with a first bevel gear, and the inside of the transmission block is rotatably provided with a second bevel gear meshingly connected with the first bevel gear.

6. The apparatus of claim 5, wherein, The rear side of the transmission block is fixedly connected with a transmission chamber, the inside of the transmission chamber is provided with a servo motor, and the output shaft of the servo motor is fixedly connected with the second bevel gear through a transmission rod.

7. The apparatus of claim 1, wherein, Both sides of the moving sleeve are fixedly connected with slide strips, the surface of the transmission block is provided with slide grooves slidably connected with the slide strips, the other end of the moving sleeve is fixedly connected with a threaded column, and one side of the polishing head is provided with a threaded sleeve threadedly connected with the threaded column.

8. The apparatus of claim 1, wherein, The transmission shaft is spliced by a plurality of connecting assemblies, the connecting assemblies comprise: a plug arranged at one end of the transmission shaft, a slot arranged at the other end of the transmission shaft and mutually clamped with the plug, a connecting sleeve fixedly sleeved at one end of the transmission shaft, a fixing bolt arranged on the connecting sleeve and used for fixing another set of transmission shafts, a limiting strip arranged on the outer surface of the plug, and a limiting groove arranged on the inner wall of the slot and in sliding connection with the limiting strip.

9. A method of processing a petroleum non-magnetic resistivity collar cavity according to any one of claims 1-8, characterized in that, The method comprises the following steps: S1, fixing the drill collar: the drill collar body is fixed by using a fixing mechanism and a locking mechanism; S2, adjusting the polishing assembly: the position of the polishing head is adjusted by using the work of the servo motor, so that the polishing head just adheres to the inner wall of the drill collar; S3, cavity polishing: the worker starts the driving motor and pushes the mounting frame to move, so that the polishing assembly rotates into the inner cavity of the drill collar to perform the polishing work.

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