Integrated casing milling pipe

Abstract

The utility model discloses an integrated washover pipe which comprises a washover pipe and a washover cutter, a dismounting assembly is arranged between the washover pipe and the washover cutter, the dismounting assembly comprises an annular fixing shell, a rotating plate is arranged on the upper side of the annular fixing shell, a mounting cavity is formed between the annular fixing shell and the rotating plate, and a rotating notch is formed in the circumferential side of the inner wall of the mounting cavity. A threaded column is installed in the threaded cylinder in a threaded mode, a clamping plate is arranged at one end of the threaded column, a gear is fixedly installed at one end of the threaded cylinder, a gear ring is arranged on one side of the rotating plate, and the gear ring is meshed with the gear. According to the integrated washover pipe provided by the utility model, through the arrangement of the dismounting assembly, when the cleaning capacity of the washover shoe is reduced after the washover shoe is used for a long time, a worker can conveniently and quickly dismount the washover shoe through the dismounting assembly, so that the convenience and the practicability of the washover pipe during use are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to oilfield technical field, concretely relates to integrated casing pipe. BACKGROUND

[0002] In oilfield, casing milling is a process method for removing the material between downhole pipe column and casing (well wall), which can mill cement, scale, hard sand, packer rubber or anchor teeth, small pipe column stuck and the like in annulus, and the tool mainly has casing mill barrel and casing mill shoe, and the drill stabilizer in petroleum industry causes downhole pipe sticking accident in use, and in order to remove the pipe sticking part, casing mill pipe casing mill shoe is needed.

[0003] The existing casing mill shoe is mostly fixed at one end of the casing mill pipe, and the cleaning capacity of the casing mill shoe will decrease after long time use, but the existing casing mill pipe is not convenient for disassembling and replacing the casing mill shoe. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing integrated casing mill pipe to solve the above-mentioned shortcomings in prior art.

[0005] Therefore, the utility model provides the following technical scheme:

[0006] Integrated casing mill pipe, including casing mill pipe and casing mill cutter, the casing mill pipe and the casing mill cutter between setting up dismounting assembly, the dismounting assembly includes annular fixed shell and annular rotating plate installed on annular fixed shell, wherein:

[0007] The cross section of the annular fixed shell is U-shaped, including annular outer wall and annular inner wall with different heights;

[0008] The cross section of the annular rotating plate is L-shaped, and the annular fixed shell and the annular rotating plate enclose a mounting cavity, and the annular rotating plate can rotate relative to the annular fixed shell;

[0009] A plurality of rotating grooves are formed on the annular inner wall, a threaded cylinder is rotatably installed in the rotating groove, and a threaded column is installed in the threaded cylinder; the end of the threaded column away from the annular fixed shell is fixedly connected with a clamping plate; the number, size and position of the rotating groove, threaded cylinder, threaded column and clamping plate are the same; a gear is fixedly installed at the end of the threaded cylinder close to the annular fixed shell, a gear ring is arranged on the side of the rotating plate close to the gear 19, and the gear ring is engaged with the gear;

[0010] The casing mill cutter is provided with an annular plug-in part on one side, and a clamping groove is formed in the circumferential direction of the plug-in part, and the number, size and position of the clamping groove correspond to the number, size and position of the clamping plate.

[0011] The abutting surface of the rotating plate of the annular fixed shell is provided with a limiting rotating groove and a limiting rotating ring.

[0012] The lower part of the outer side of the annular fixed shell is provided with an annular fixed plate, a plurality of elastic telescopic rods are vertically arranged on the fixed plate, the upper end of the elastic telescopic rod is fixedly connected with an annular moving plate, and a plurality of limiting columns are arranged on the upper side of the moving plate. The outer circumferential surface of the rotating plate is provided with an annular limiting plate, a plurality of insertion grooves are arranged on the limiting plate, and the limiting columns are movably inserted into the insertion grooves.

[0013] The annular inner wall of the annular fixed shell is provided with a receiving groove, and the clamping plate is located in the receiving groove.

[0014] The upper side of the sleeve milling pipe is provided with a special-shaped interface.

[0015] The annular fixed shell is fixedly installed at one end of the sleeve milling pipe, and the insertion piece is movably inserted into the annular fixed shell and the rotating plate.

[0016] In the above technical scheme, the integrated sleeve milling pipe has the following beneficial effects:

[0017] 1.When the cleaning ability of the sleeve milling shoe is reduced due to long-time use, the dismounting assembly can conveniently and quickly dismount the sleeve milling shoe, thereby improving the convenience and practicality of the sleeve milling pipe in use.

[0018] 2.After the new sleeve milling shoe is replaced and fixed by the dismounting assembly, the limiting column is inserted into the insertion groove, the dismounting assembly is limited and fixed, and the stability of the sleeve milling pipe in use is improved.

[0019] 3.The elastic telescopic rod provides thrust for the moving plate and the limiting column, the limiting column can be inserted into the insertion groove, and the stability of the sleeve milling pipe in use is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art according to these drawings.

[0021] Figure 1 It is a whole structure schematic view of an embodiment of the integrated sleeve milling pipe of the present application.

[0022] Figure 2The utility model discloses a structure schematic drawing of sleeve milling cutter in one embodiment of the utility model.

[0023] Figure 3 For Figure 1 The overall structure schematic drawing of dismounting assembly in one embodiment of the utility model.

[0024] Figure 4 For Figure 1 The cross section structure schematic drawing of dismounting assembly in one embodiment of the utility model.

[0025] Figure 5 For Figure 4 The local enlarged structure schematic drawing of one embodiment of the utility model.

[0026] In the drawing,

[0027] 1, sleeve milling pipe, 2, special-shaped interface, 3, sleeve milling cutter, 4, dismounting assembly, 5, plug-in part, 6, clamping groove, 7, annular fixed shell, 8, fixed plate, 9, moving plate, 10, limiting plate, 11, limiting column, 12, elastic telescopic rod, 13, insertion slot, 14, rotating plate, 15, annular inner wall, 16, clamping plate, 17, installation cavity, 18, threaded cylinder, 19, gear, 20, tooth ring, 21, limiting rotating groove, 22, limiting rotating ring, 23, annular outer wall. DETAILED DESCRIPTION

[0028] In order to make the technical personnel of the prior art better understand the technical scheme of the utility model, the structure of the utility model is explained in detail below in combination with the drawings.

[0029] Figures 1-5 As shown in the drawing, the integral sleeve milling pipe includes sleeve milling pipe 1 and sleeve milling cutter 3, and is provided with dismounting assembly 4 between sleeve milling pipe 1 and sleeve milling cutter 3.

[0030] The dismounting assembly 4 includes annular fixed shell 7 and annular rotating plate 14 installed on the annular fixed shell 7.The cross section of the annular fixed shell 7 is U-shaped, including annular outer wall 23 and annular inner wall 15 with different heights; the cross section of the annular rotating plate 14 is L-shaped.The annular fixed shell 7 and the annular rotating plate 14 enclose installation cavity 17, and the annular rotating plate 14 can rotate relative to the annular fixed shell 7.

[0031] A plurality of rotating slots are formed on the annular inner wall 15, a threaded cylinder 18 is rotatably installed in the rotating slot, and a threaded column (not shown in the drawing) is installed in the threaded cylinder 18.The threaded column is fixedly connected with clamping plate 16 at the end away from the annular fixed shell 7.The number of the rotating slot, the threaded cylinder 18, the threaded column and the clamping plate 16 is the same.A gear 19 is fixedly installed at the end of the threaded cylinder 18 close to the annular fixed shell 7, a tooth ring 20 is arranged on the side of the rotating plate 14 close to the gear 19, and the tooth ring 20 is engaged with the gear 19.

[0032] The sleeve milling cutter 3 is provided with an annular plug-in part 5 on one side, and the plug-in part 5 is provided with clamping grooves 6 in the circumferential direction, the number, size and position of the clamping grooves 6 correspond to those of the clamping plates 16.

[0033] The abutting surfaces of the annular fixed shell 7 and the rotating plate 14 are respectively provided with a limiting rotating groove 21 and a limiting rotating ring 22, the cross sections of the limiting rotating groove 21 and the limiting rotating ring 22 are T-shaped, and the limiting rotating ring 22 is rotatably installed in the limiting rotating groove 21. The annular inner wall 15 of the annular fixed shell 7 is provided with a receiving groove, and the clamping plate 16 is located in the receiving groove. The clamping plate 16 and the clamping groove 6 are both arc-shaped.

[0034] The upper side of the sleeve milling pipe 1 is provided with a special-shaped interface 2, the annular fixed shell 7 is fixedly installed at one end of the sleeve milling pipe 1, and the plug-in part 5 is detachably plugged into the annular fixed shell 7 and the rotating plate 14.

[0035] The outer side of the annular fixed shell 7 is provided with an annular fixed plate 8 at the lower part, a plurality of elastic expansion rods 12 are vertically arranged on the fixed plate 8, the upper ends of the elastic expansion rods 12 are fixedly connected with an annular moving plate 9, and the upper side of the moving plate 9 is provided with a plurality of limiting columns 11. The outer circumferential surface of the rotating plate 14 is provided with an annular limiting plate 10, the limiting plate 10 is provided with a plurality of plug-in grooves 13, and the limiting columns 11 are movably plugged into the plug-in grooves 13. The number and position of the limiting columns 11 correspond to those of the plug-in grooves 13.

[0036] When the sleeve milling cutter 3 is installed, the plug-in part 5 on one side of the sleeve milling cutter 3 is inserted between the inner ring of the annular fixed shell 7 and the rotating plate 14, the clamping grooves 6 in the circumferential direction of the plug-in part 5 correspond to the clamping plates 16, the rotating plate 14 is rotated, the gear ring 20 is rotated, and the gear 19 is rotated. The rotation of the gear 19 drives the threaded cylinder 18 to rotate, and then drives the threaded rod to move radially inward, the clamping plate 16 moves with the receiving groove and is inserted into the clamping groove 6 on the side of the plug-in part 5, and the fixation of the plug-in part 5 is completed.

[0037] When the sleeve milling cutter 3 is disassembled, the moving plate 9 is pulled in the opposite direction of the fixed plate 8 again, so that the moving plate 9 drives the limiting columns 11 to be separated from the plug-in grooves 13 on the upper side of the limiting plate 10, and then the rotating plate 14 is rotated again, the gear ring 20 is rotated, and the gear 19 is rotated. The rotation of the gear 19 drives the threaded cylinder 18 to rotate, and then drives the threaded rod to move radially outward, so that the clamping plate 16 is separated from the clamping groove 6 on the plug-in part 5, and is retracted into the receiving groove. At this time, the sleeve milling cutter 3 is pulled, so that the sleeve milling cutter 3 drives the plug-in part 5 to be separated from the annular fixed shell 7 and the rotating plate 14, and the disassembly of the sleeve milling cutter 3 is completed.

[0038] In other embodiments, a spring ball clamping mechanism is arranged between the rotating plate 14 and the annular fixed shell 7, so that the rotating plate 14 and the annular fixed shell 7 have a certain limiting function.

[0039] In another embodiment of the utility model, when the sleeve milling tool 3 is installed, the moving plate 9 is pulled reversely to the fixed plate 8, so that the moving plate 9 drives the limiting column 11 to be separated from the slot 13 on the upside of the limiting plate 10, and the limiting and fixing of the limiting column 11 to the rotating plate 14 are released. After the fixing of the plug-in part 5 is completed, the moving plate 9 is released, so that the moving plate 9 inserts the limiting column 11 into the corresponding slot again under the elastic force of the elastic telescopic rod 12. When the sleeve milling tool 3 is disassembled, the moving plate 9 is pulled reversely to the fixed plate 8 again, so that the moving plate 9 drives the limiting column 11 to be separated from the slot 13 on the upside of the limiting plate 10, and the limiting column 11 releases the limiting and fixing to the rotating plate 14.

[0040] The above only describes certain exemplary embodiments of the utility model by way of illustration, and it is needless to say that the described embodiments can be modified in various ways without departing from the spirit and scope of the utility model for ordinary skilled in the art. Therefore, the above drawings and description are illustrative in nature and should not be understood as limiting the scope of protection claimed by the utility model.

Claims

1. A one-piece casing mill pipe comprising a casing mill pipe (1) and a casing mill cutter (3), characterized in that, The sleeve milling pipe (1) and the sleeve milling cutter (3) are provided with a dismounting assembly (4), the dismounting assembly (4) comprises an annular fixed shell (7) and an annular rotating plate (14) installed on the annular fixed shell (7), wherein: The cross section of the annular fixed shell (7) is U-shaped, comprising an annular outer wall (23) and an annular inner wall (15) with different heights; The cross section of the annular rotating plate (14) is L-shaped, the annular fixed shell (7) and the annular rotating plate (14) form a mounting cavity (17), and the annular rotating plate (14) can rotate relative to the annular fixed shell (7); A plurality of rotating grooves are formed on the annular inner wall (15), a threaded cylinder (18) is rotatably installed in the rotating groove, and a threaded column is installed in the threaded cylinder (18); the end of the threaded column away from the annular fixed shell (7) is fixedly connected with a clamping plate (16); the number, size and position of the rotating grooves, the threaded cylinder (18), the threaded column and the clamping plate (16) are the same; the end of the threaded cylinder (18) close to the annular fixed shell (7) is fixedly installed with a gear (19), and the side of the rotating plate (14) close to the gear (19) is provided with a gear ring (20), the gear ring (20) is engaged with the gear (19); The sleeve milling cutter (3) is provided with an annular plug-in part (5) on one side, the plug-in part (5) is provided with a clamping groove (6) in the circumferential direction, and the number, size and position of the clamping groove (6) correspond to the number, size and position of the clamping plate (16).

2. The monobore milling pipe of claim 1, wherein, The abutting surface of the annular fixed shell (7) rotating plate (14) is respectively provided with a limiting rotating groove (21) and a limiting rotating ring (22), and the limiting rotating ring (22) is rotatably installed in the limiting rotating groove (21).

3. The monobore milling pipe of claim 2, wherein, The outer side of the annular fixed shell (7) is provided with an annular fixed plate (8) at the lower part, a plurality of elastic expansion rods (12) are vertically arranged on the fixed plate (8), the upper end of the elastic expansion rod (12) is fixedly connected with an annular moving plate (9), and a plurality of limiting columns (11) are arranged on the upper side of the moving plate (9); an annular limiting plate (10) is arranged on the outer circumferential surface of the rotating plate (14), a plurality of insertion grooves (13) are formed on the limiting plate (10), and the limiting columns (11) are movably inserted into the insertion grooves (13); the number and position of the limiting columns (11) correspond to the number and position of the insertion grooves (13).

4. The monobore milling pipe of claim 3, wherein, The annular inner wall (15) of the annular fixed shell (7) is provided with a receiving groove, and the clamping plate (16) is located in the receiving groove; the clamping plate (16) and the clamping groove (6) are arc-shaped.

5. The monobore milling pipe of claim 1 wherein, The upper side of the sleeve milling pipe (1) is provided with a special-shaped interface (2).

6. The monobore milling pipe of claim 1, wherein, The annular fixed shell (7) is fixedly installed at one end of the sleeve milling pipe (1), and the plug-in part (5) is movably inserted into the annular fixed shell (7) and the rotating plate (14).

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