Composite cutting hard formation windowing milling cone

Abstract

The utility model discloses a composite cutting hard formation windowing milling cone, which relates to the field of well drilling and comprises a connector and a milling cone base body, and a clamping component is arranged between the connector and the milling cone base body. The clamping assembly comprises a positioning groove formed in the top end of the connector, a positioning block installed at the bottom of the milling cone base body, grooves formed in the two sides of the interior of the connector and a rotating sleeve connected to the outer wall of the connector in a sleeving mode, and a baffle ring is installed at the top end of the rotating sleeve. Through the arrangement of the clamping assembly, when the milling cone base body needs to be disassembled, a user can rotate the rotating sleeve to enable the rotating sleeve to move downwards, then the baffle ring is driven to move downwards, at the moment, the baffle ring does not shield the pressing rod any more, the spring shrinks to drive the movable block to reset and move, the clamping block is driven to move, the clamping block moves out of the clamping groove, and at the moment, the positioning block is not limited any more; the disassembly and assembly process is simple and convenient, the operation steps are few, much time does not need to be consumed, and therefore the disassembly and assembly efficiency of the milling cone base body is improved.

Description

Technical Field

[0001] The utility model relates to the field of drilling, in particular to a composite cutting hard formation window milling cone. Background Art

[0002] Side drilling by opening windows in oil layer casing is an important means to revitalize abandoned wells and improve the recovery rate in old oil fields. Side drilling by opening windows in old wells in old oil and gas fields can not only greatly save drilling costs, but also discover some new reserves, which is helpful to stabilize and increase production of old oil and gas fields and improve efficiency.

[0003] According to the Chinese patent with publication number CN113202438B, a composite cutting window milling cone is disclosed. The invention integrates two drilling processes, thick-walled high-grade steel casing milling and hard formation drilling, and completes the oil layer casing window opening operation at one time. It has the characteristics of high window opening success rate, strong reliability, and efficient and long-life drilling, and solves the problem of complex and low efficiency of window opening construction process of thick-walled high-grade steel alloy casing and hard formation casing.

[0004] Regarding the above-mentioned disclosed patent content, since the milling cone base may be damaged after long-term use, but since the milling cone base is fixed on the connecting head, it is difficult to disassemble and replace the milling cone base after the milling cone base is damaged, so the connecting head and the milling cone base can only be disassembled and replaced together, thereby increasing the replacement cost. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a composite cutting hard formation window milling cone to solve the technical problem of inconvenience in disassembling and replacing the milling cone base.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a composite cutting hard formation window milling cone, comprising a joint and a milling cone base, a clamping assembly is provided between the joint and the milling cone base, and the clamping assembly comprises a positioning groove opened at the top of the joint, a positioning block installed at the bottom of the milling cone base, grooves opened on both sides of the joint and a rotating sleeve sleeved on the outer wall of the joint, and a retaining ring is installed on the top of the rotating sleeve, clamping grooves are opened on both sides of the positioning block, a movable block is arranged inside the groove, and a clamping block is fixed on one side of the movable block, and a pressure rod penetrating to the outside of the joint is provided on the other side of the movable block.

[0007] By adopting the above technical solution, when the milling cone base needs to be disassembled, the user can rotate the rotating sleeve to move the rotating sleeve downward, thereby driving the retaining ring to move downward, and the retaining ring no longer blocks the pressure rod.

[0008] Furthermore, a plurality of springs are installed on one side of the inner portion of the groove, and one end of the spring is connected to the movable block.

[0009] By adopting the above technical solution, the movable block will stretch the spring when it moves, which is convenient for subsequently driving the movable block to reset and move.

[0010] Furthermore, the milling cone base is detachably connected to the joint, and the bottom end of the milling cone base is fitted with the top end of the joint.

[0011] By adopting the above technical solution, the milling cone base can be easily disassembled from the joint so as to replace the milling cone base.

[0012] Furthermore, a plurality of polycrystalline diamond grinding blocks are provided below the outer wall of the milling cone base.

[0013] By adopting the above technical solution, the setting of the polycrystalline diamond grinding block can improve the strength of the milling cone base and improve the use effect of the milling cone base.

[0014] Furthermore, the outer wall of the milling cone base is also provided with a plurality of superhard diamond grinding strips and superhard diamond additional grinding blocks, and the superhard diamond grinding strips and superhard diamond additional grinding blocks are arranged alternately.

[0015] By adopting the above technical solution, the provision of superhard diamond grinding strips and superhard diamond additional grinding blocks improves the strength of the milling cone base and facilitates the milling cone base to drill into hard formations.

[0016] Furthermore, the card block is located inside the card slot, and the card block is adapted to the card slot.

[0017] By adopting the above technical solution, after the clamping block is inserted into the clamping slot, the positioning block can be limited and fixed to prevent the positioning block from moving out of the positioning slot.

[0018] Furthermore, the positioning block is located inside the positioning groove, and the positioning block is adapted to the positioning groove.

[0019] By adopting the above technical solution, when the positioning block is inserted into the positioning groove, the milling cone base can be positioned.

[0020] Furthermore, the clamping block is slidably connected to the groove via a movable block.

[0021] By adopting the above technical solution, when the movable block slides inside the groove, it will drive the card block to move, so that the card block can be moved out of the card slot or moved into the card slot.

[0022] Furthermore, the inner wall of the retaining ring is fitted with one end of the pressure rod.

[0023] By adopting the above technical solution, after the retaining ring contacts the pressure rod, the pressure rod can be limited to prevent the pressure rod from moving.

[0024] Furthermore, the outer wall of the joint and the inner wall of the rotating sleeve are both provided with threads, and the rotating sleeve is threadedly connected to the joint.

[0025] By adopting the above technical solution, when the user rotates the rotating sleeve, the rotating sleeve can move, and the movement of the rotating sleeve will drive the retaining ring to move.

[0026] In summary, the utility model mainly has the following beneficial effects:

[0027] The utility model is provided with a clamping assembly, and when it is necessary to disassemble the milling cone base body, the user can rotate the rotating sleeve to make the rotating sleeve move downward, thereby driving the retaining ring to move downward, at this time the retaining ring no longer blocks the pressure rod, the spring contracts and drives the movable block to return to its original position, and drives the clamping block to move, so that the clamping block is moved out of the clamping groove, at this time, the positioning block is no longer limited, and then the user can remove the milling cone base body, and then insert the positioning block at the bottom of the new milling cone base body into the positioning groove, and then press the pressure rods on both sides to make the pressure rod move into the groove, and at the same time, the spring will be stretched and the clamping block will be driven to move into the clamping groove, so as to limit and fix the positioning block, prevent the positioning block from moving out of the positioning groove, and then rotate the rotating sleeve in the opposite direction to make the retaining ring move upward, and when the inner wall of the retaining ring contacts the pressure rod, the rotating sleeve is no longer rotated, so that the installation of the milling cone base body can be completed, and the disassembly and assembly process is simple and convenient, with few operating steps and no need to spend much time, thereby improving the disassembly and assembly efficiency of the milling cone base body, and at the same time, only the milling cone base body needs to be replaced, and there is no need to replace the joint, thereby reducing the replacement cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0029] Figure 2 It is a schematic diagram of the three-dimensional structure of the joint of the utility model;

[0030] Figure 3 This is a schematic diagram of the front cross-sectional structure of the joint of the utility model;

[0031] Figure 4 It is a schematic diagram of the three-dimensional structure of the card block of the utility model.

[0032] In the figure: 1. joint; 2. milling cone base; 3. clamping assembly; 301. positioning groove; 302. positioning block; 303. groove; 304. spring; 305. pressure rod; 306. clamping block; 307. clamping groove; 308. retaining ring; 309. rotating sleeve; 310. movable block; 4. polycrystalline diamond grinding block; 5. superhard diamond grinding bar; 6. superhard diamond additional grinding block; 7. high-strength alloy cutting rack; 8. end face cutting part. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0034] The following describes an embodiment of the utility model based on its overall structure.

[0035] Embodiment 1:

[0036] A composite cutting hard formation window milling cone, such as Figure 1-Figure 4 As shown, it includes a joint 1 and a milling cone base 2, a clamping assembly 3 is provided between the joint 1 and the milling cone base 2, an end face cutting portion 8 is provided at the top of the milling cone base 2, the clamping assembly 3 includes a positioning groove 301 opened at the top of the joint 1, a positioning block 302 installed at the bottom of the milling cone base 2, grooves 303 opened on both sides of the inside of the joint 1 and a rotating sleeve 309 sleeved on the outer wall of the joint 1, and a retaining ring 308 is installed at the top of the rotating sleeve 309, the milling cone base 2 is detachably connected to the joint 1, the bottom end of the milling cone base 2 is fitted with the top of the joint 1, so that the milling cone base 2 is conveniently removed from the joint 1 so as to replace the milling cone base 2, the outer wall of the joint 1 and the inner wall of the rotating sleeve 309 are both provided with threads, the rotating sleeve 309 is threadedly connected to the joint 1, so that when the user rotates the rotating sleeve 309, the rotating sleeve 309 can move, and the rotating sleeve 309 will drive the retaining ring 308 to move after moving.

[0037] Specifically, the positioning block 302 is located inside the positioning groove 301, and the positioning block 302 is adapted to the positioning groove 301. When the positioning block 302 is inserted into the positioning groove 301, the milling cone base 2 can be positioned. Slots 307 are provided on both sides of the positioning block 302, and a movable block 310 is provided inside the groove 303, and a clamping block 306 is fixed on one side of the movable block 310. The clamping block 306 is located inside the clamping groove 307, and the clamping block 306 is adapted to the clamping groove 307. After the clamping block 306 is inserted into the clamping groove 307, the positioning block 302 can be limited and fixed to prevent the positioning block 302 from moving out of the positioning groove 301.

[0038] Specifically, the block 306 is slidably connected to the groove 303 through the movable block 310. When the movable block 310 slides inside the groove 303, it drives the block 306 to move, so that the block 306 can be moved out of or into the groove 307. The other side of the movable block 310 is provided with a pressure rod 305 that penetrates to the outside of the joint 1. When the milling cone base 2 needs to be disassembled, the user can rotate the rotating sleeve 309 to move the rotating sleeve 309 downward, thereby driving the retaining ring 308 moves downward, at this time, the retaining ring 308 no longer blocks the pressure rod 305, and multiple springs 304 are installed on one side of the inner part of the groove 303, one end of the spring 304 is connected to the movable block 310, and when the movable block 310 moves, it will stretch the spring 304 to facilitate the subsequent reset movement of the movable block 310, and the inner wall of the retaining ring 308 fits with one end of the pressure rod 305. After the retaining ring 308 contacts the pressure rod 305, the pressure rod 305 can be limited to prevent the pressure rod 305 from moving.

[0039] Embodiment 2:

[0040] On the basis of the above-mentioned first embodiment, in order to improve the strength of the milling cone base 2, the following structure is provided.

[0041] See also Figure 1-Figure 2 A plurality of polycrystalline diamond grinding blocks 4 are arranged below the outer wall of the milling cone base 2, and a plurality of high-strength alloy cutting racks 7 are also arranged on the outer wall of the milling cone base 2. The arrangement of the polycrystalline diamond grinding blocks 4 can improve the strength of the milling cone base 2. The outer wall of the milling cone base 2 is also respectively provided with a plurality of superhard diamond grinding strips 5 and superhard diamond additional grinding blocks 6, and the superhard diamond grinding strips 5 and the superhard diamond additional grinding blocks 6 are arranged alternately. The arrangement of the superhard diamond grinding strips 5 and the superhard diamond additional grinding blocks 6 improves the strength of the milling cone base 2 and facilitates the milling cone base 2 to drill into hard formations, thereby improving the use effect of the milling cone base 2.

[0042] The working principle of the utility model is as follows: first, the arrangement of the polycrystalline diamond grinding block 4, the superhard diamond grinding strip 5 and the superhard diamond additional grinding block 6 can improve the strength of the milling cone base 2, so that the milling cone base 2 can drill into the hard formation to open a window;

[0043] When the milling cone base 2 needs to be disassembled and replaced, the user can rotate the rotating sleeve 309 to move the rotating sleeve 309 downward, thereby driving the retaining ring 308 downward. At this time, the retaining ring 308 no longer blocks the pressure rod 305, and the spring 304 contracts to drive the movable block 310 to return to its original position and drive the clamping block 306 to move, so that the clamping block 306 is moved out of the clamping slot 307. At this time, the positioning block 302 is no longer limited. Then the user can remove the milling cone base 2, and then insert the positioning block 302 at the bottom of the new milling cone base 2 into the fixed The spring 304 is stretched at the same time, and the clamping block 306 is driven to move into the clamping slot 307, so as to limit and fix the positioning block 302 and prevent the positioning block 302 from moving out of the positioning slot 301. Then, the rotating sleeve 309 is rotated in the opposite direction to move the retaining ring 308 upward. When the inner wall of the retaining ring 308 contacts the pressure rod 305, the rotating sleeve 309 is no longer rotated, and the installation of the milling cone base 2 is completed.

[0044] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A composite cutting hard formation window milling cone, comprising a joint (1) and a milling cone base (2), characterized in that: A clamping assembly (3) is provided between the joint (1) and the milling cone base (2), and the clamping assembly (3) comprises a positioning groove (301) provided at the top of the joint (1), a positioning block (302) installed at the bottom of the milling cone base (2), grooves (303) provided at both sides of the inside of the joint (1) and a rotating sleeve (309) sleeved on the outer wall of the joint (1), and a retaining ring (308) is installed at the top of the rotating sleeve (309), and the positioning block (302) is provided with a clamping groove (307) on both sides, and a movable block (310) is provided inside the groove (303), and a clamping block (306) is fixed on one side of the movable block (310), and a pressure rod (305) is provided on the other side of the movable block (310) and passes through the outside of the joint (1).

2. The composite cutting hard formation window milling cone according to claim 1, characterized in that: A plurality of springs (304) are installed on one side of the interior of the groove (303), and one end of the spring (304) is connected to the movable block (310).

3. The composite cutting hard formation window milling cone according to claim 1, characterized in that: The milling cone base (2) is detachably connected to the joint (1), and the bottom end of the milling cone base (2) fits with the top end of the joint (1).

4. The composite cutting hard formation window milling cone according to claim 1, characterized in that: A plurality of polycrystalline diamond grinding blocks (4) are arranged below the outer wall of the milling cone base (2).

5. The composite cutting hard formation window milling cone according to claim 1, characterized in that: The outer wall of the milling cone base (2) is also provided with a plurality of superhard diamond grinding strips (5) and superhard diamond additional grinding blocks (6), and the superhard diamond grinding strips (5) and superhard diamond additional grinding blocks (6) are arranged in a staggered manner.

6. The composite cutting hard formation window milling cone according to claim 1, characterized in that: The card block (306) is located inside the card slot (307), and the card block (306) is adapted to the card slot (307).

7. The composite cutting hard formation window milling cone according to claim 1, characterized in that: The positioning block (302) is located inside the positioning groove (301), and the positioning block (302) is adapted to the positioning groove (301).

8. The composite cutting hard formation window milling cone according to claim 1, characterized in that: The clamping block (306) is slidably connected to the groove (303) via a movable block (310).

9. The composite cutting hard formation window milling cone according to claim 1, characterized in that: The inner wall of the retaining ring (308) is in contact with one end of the pressure rod (305).

10. The composite cutting hard formation window milling cone according to claim 1, characterized in that: The outer wall of the joint (1) and the inner wall of the rotating sleeve (309) are both provided with threads, and the rotating sleeve (309) is threadedly connected to the joint (1).

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