A downhole rotary steerable drill bit device

Abstract

The utility model discloses an underground rotary guide drill bit device, which belongs to the technical field of guide drilling, and comprises a coupling rod, the bottom end of the coupling rod is movably connected with a fixing column, the fixing column is provided with a cavity, the inner cavity of the fixing column is provided with a guiding mechanism that drives the coupling rod for guiding and cooperation, the bottom of the fixing column is fixedly connected with a driving device, the driving device is equipped with a drill bit, and the coupling rod can be adjusted arbitrarily following the direction of the drill bit through the arranged coupling rod, thereby improving the flexibility of the coupling rod, and at the same time, the arranged guiding mechanism can provide a guiding effect for the drill bit rotating underground, thereby facilitating the change of the direction of the drill bit and facilitating the drill bit to perform rotary drilling underground, and the arranged through groove can facilitate the movement and adjustment of the single guide plate, thereby fitting with the surface layer underground to form a reaction force, which can bring an angle adjustment effect to the direction of the drill bit.

Description

Technical Field

[0001] The utility model relates to the technical field of directional drilling, in particular to a downhole rotary directional drill bit device. Background Art

[0002] The work of drilling holes in the ground using mechanical equipment or manpower is called drilling. It usually refers to the engineering of drilling wells and large-diameter water supply wells for the exploration or development of liquid and gaseous minerals such as oil and natural gas. Drilling is widely used in national economic construction. Drilling is an important part of geological exploration and mineral deposit development. For oil and natural gas, a well is the only channel to connect oil and gas layers to the ground to form oil and gas production. It is also the only channel for people to observe and influence oil and gas reservoirs.

[0003] According to the announcement number: CN220378183U, a rotary directional drilling device is proposed, which includes a core shaft, one end of the core shaft is connected to the drill rod, and the other end is connected to the drill bit, and also includes: a stabilizing sleeve is rotatably connected to the side wall of the core shaft, and a guiding mechanism is arranged in a circular array inside the stabilizing sleeve, and the driving component is used to drive the guiding component to radially expand and contract in the stabilizing sleeve, and the guiding purpose is achieved by utilizing the changes of the driving component and the guiding component on the stabilizing sleeve, wherein the driving component and the guiding component are connected through a threaded relationship and an articulated relationship to achieve the extension or retraction of the guiding component, and the threaded cooperation enables the guiding component to achieve a self-locking function on the driving component, and at the same time, the articulated cooperation and the threaded cooperation enable the guiding component to achieve precise displacement changes under the drive of the driving component, thereby avoiding the occurrence of loss parts that cause the guiding component to affect the extension or retraction effect, thereby affecting the guiding effect of the entire device.

[0004] According to the above introduction, during the drilling process, due to the poor guidance of the drill bit, the position of the drill bit in the downhole drilling cannot be changed, so that other guiding tools connected to the drill bit cannot be moved, reducing the efficiency of the drill bit in downhole drilling. In order to solve the above problems, an downhole rotary guiding drill bit device is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide an underground rotary guide drill bit device, which can be adjusted arbitrarily following the direction of the drill bit through the arranged coupling rod, thereby improving the flexibility of the coupling rod, and at the same time, the arranged guide mechanism can provide a guiding effect on the drill bit rotating underground, thereby facilitating the change of the direction of the drill bit and facilitating the drill bit to rotate and drill holes underground, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a downhole rotary guide drill bit device, including a coupling rod, the bottom end of which is movably connected to a fixed column, the fixed column is provided with a cavity, the inner cavity of the fixed column is provided with a guide mechanism for driving the coupling rod for guiding and cooperation, the bottom of the fixed column is fixedly connected to a driving device, and a drill bit is installed on the driving device.

[0007] Preferably, the coupling rod includes a connecting column, both ends of the connecting column are provided with a slot, the inner cavity of the slot is movably connected with a cross bearing, a plurality of connecting columns and cross bearings are provided, two adjacent connecting columns are movably connected by a cross bearing, and the cross bearing installed at the bottom end of the connecting column is movably connected to the top of the fixed column.

[0008] Preferably, through grooves are formed around the surface of the fixing column, and one end of the guide mechanism is movably connected to the through groove.

[0009] Preferably, the guiding mechanism comprises a servo driver, an output end of the servo driver is fixedly connected to a connecting component, one end of the connecting component is fixedly connected to a guide plate, and the guide plate is movably connected to an inner cavity of the through slot.

[0010] Preferably, the guide plate is arranged in a semicircular shape, and the arc surface of the guide plate is located at the outer end of the fixing column.

[0011] Preferably, the number of the servo drivers is equal to the number of the through slots, a fixing rod is fixedly connected to the center of the inner cavity of the fixing column, and the servo driver is mounted on the fixing rod and corresponds to the position of the through slot.

[0012] Preferably, the connecting assembly includes a fixed plate, the inner wall of the fixed plate is fixedly connected to the output end of the servo driver, the outer wall of the fixed plate is fixedly connected with connecting rods in sequence from top to bottom, and the end of the connecting rod away from the fixed plate is fixedly connected to the guide plate.

[0013] Preferably, a protective cover is provided in the cavity of the fixing column, the protective cover is provided on the surface of the servo driver, the fixing plate and the fixing rod are both located in the inner cavity of the protective cover, and the connecting rod is movably connected to the surface wall of the protective cover.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model provides an underground rotary guide drill bit device, which can be adjusted arbitrarily following the direction of the drill bit through a provided coupling rod, thereby improving the flexibility of the coupling rod, and at the same time can provide a guiding effect for the drill bit rotating underground through a provided guiding mechanism, thereby facilitating the change of the direction of the drill bit and facilitating the drill bit to rotate and drill holes underground. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the fixed column and drill bit structure of the utility model;

[0018] Figure 3 It is a schematic plan cross-sectional view of the fixed column structure of the utility model;

[0019] Figure 4 It is a partial cross-sectional schematic diagram of the fixing column and the protective cover structure of the utility model;

[0020] Figure 5 It is a partial schematic diagram of the coupling rod structure of the utility model.

[0021] Numbers in the figure: 1, coupling rod; 11, connecting column; 12, slot; 13, cross bearing; 2, fixed column; 3, guide mechanism; 31, servo drive; 32, connecting assembly; 321, fixed plate; 322, connecting rod; 33, guide plate; 4, driving device; 5, drill bit; 6, through slot; 7, fixed rod; 8, protective cover. DETAILED DESCRIPTION

[0022] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The utility model provides Figures 1 to 5 The shown downhole rotary guide drill bit device comprises a coupling rod 1, the bottom end of the coupling rod 1 is movably connected with a fixed column 2, the fixed column 2 is provided with a cavity, the inner cavity of the fixed column 2 is provided with a guide mechanism 3 for driving the coupling rod 1 for guiding and cooperation, the bottom of the fixed column 2 is fixedly connected with a driving device 4, and a drill bit 5 is installed on the driving device 4. The coupling rod 1 can be adjusted at will following the direction of the drill bit 5, thereby improving the flexibility of the coupling rod 1. At the same time, the guide mechanism 3 can provide a guiding effect for the drill bit 5 rotating downhole, thereby facilitating the change of the direction of the drill bit 5 and facilitating the drill bit 5 to perform rotary drilling downhole.

[0024] The coupling rod 1 includes a connecting column 11, both ends of which are provided with a slot 12, and the inner cavity of the slot 12 is movably connected with a cross bearing 13. A plurality of connecting columns 11 and cross bearings 13 are provided, and two adjacent connecting columns 11 are movably connected via the cross bearing 13. The cross bearing 13 installed at the bottom end of the connecting column 11 is movably connected to the top of the fixed column 2. The flexibility of the angle adjustment of the coupling rod 1 is enhanced by the cooperation of the connecting column 11, the slot 12 and the cross bearing 13, so that the position can be adjusted according to the rotation angle of the drill bit 5.

[0025] The surface of the fixed column 2 is provided with through grooves 6 around it, one end of the guide mechanism 3 is movably connected to the through groove 6, the guide mechanism 3 includes a servo driver 31, the output end of the servo driver 31 is fixedly connected to a connecting component 32, one end of the connecting component 32 is fixedly connected to a guide plate 33, the guide plate 33 is located in the inner cavity of the through groove 6 and is movably connected, the through groove 6 is provided to facilitate the movement and adjustment of the single guide plate 33, so that it fits with the surface layer underground to form a reaction force, which can bring an angle adjustment effect to the direction of the drill bit 5.

[0026] The guide plate 33 is arranged in a semicircular shape, and the arc surface of the guide plate 33 is located at the outer end of the fixing column 2, so as to reduce the friction between the guide plate 33 and the surface layer.

[0027] The number of the servo drivers 31 is equal to the number of the through slots 6. A fixing rod 7 is fixedly connected to the center of the inner cavity of the fixing column 2. The servo driver 31 is installed on the fixing column and corresponds to the position of the through slot 6. The fixing rod 7 can provide a fixing effect on the installation of the servo driver 31.

[0028] The connecting assembly 32 includes a fixing plate 321, the inner wall of the fixing plate 321 is fixedly connected to the output end of the servo driver 31, and the outer wall of the fixing plate 321 is fixedly connected with connecting rods 322 in sequence from top to bottom. The end of the connecting rod 322 away from the fixing plate 321 is fixedly connected to the guide plate 33. By setting the fixing plate 321 and the connecting rod 322 in coordination, the connection between the servo driver 31 and the guide plate 33 can be achieved, thereby facilitating the movement of the guide plate 33.

[0029] A protective cover 8 is arranged in the cavity of the fixed column 2, and the protective cover 8 is arranged on the surface of the servo driver 31. The fixed plate 321 and the fixed rod 7 are both located in the inner cavity of the protective cover 8, and the connecting rod 322 is movably connected to the surface wall of the protective cover 8. By setting the protective cover 8, the protection provided to the servo driver 31 can be enhanced.

[0030] During specific use, the driving force is first provided by the servo driver 31 in the guide mechanism 3, and the position of the guide plate 33 is moved by driving the connecting rod 322 on the fixed plate 321, so that the arc surface of the guide plate 33 fits with the surface layer under the well to form a reaction force, which can bring an angle adjustment effect to the direction of the drill bit 5. Subsequently, the coupling rod 1 is combined with the connecting column 11, the slot 12 and the cross bearing 13 to enhance the flexibility of the angle adjustment of the coupling rod 1, so that the position can be adjusted according to the rotation angle of the drill bit 5, thereby achieving the guiding effect of the rotating drill bit 5.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A downhole rotary steerable drill bit device, characterized in that: include: Coupling rod (1); The bottom end of the coupling rod (1) is movably connected to a fixing column (2), and the fixing column (2) is provided with a cavity; The inner cavity of the fixed column (2) is provided with a guide mechanism (3) for driving the coupling rod (1) for guiding and cooperating use; The bottom of the fixed column (2) is fixedly connected to a driving device (4), and a drill bit (5) is installed on the driving device (4).

2. A downhole rotary steerable drill bit device according to claim 1, characterized in that: The coupling rod (1) comprises a connecting column (11), both ends of which are provided with a slot (12), the inner cavity of the slot (12) being movably connected with a cross bearing (13), a plurality of connecting columns (11) and cross bearings (13) are provided, two adjacent connecting columns (11) are movably connected via the cross bearing (13), and the cross bearing (13) installed at the bottom end of the connecting column (11) is movably connected to the top of the fixed column (2).

3. A downhole rotary steerable drill bit device according to claim 2, characterized in that: Through grooves (6) are provided around the surface of the fixed column (2), and one end of the guide mechanism (3) is movably connected to the through groove (6).

4. A downhole rotary steerable drill bit device according to claim 3, characterized in that: The guide mechanism (3) comprises a servo driver (31), the output end of the servo driver (31) is fixedly connected to a connecting assembly (32), one end of the connecting assembly (32) is fixedly connected to a guide plate (33), and the guide plate (33) is movably connected to the inner cavity of the through slot (6).

5. A downhole rotary steerable drill bit device according to claim 4, characterized in that: The guide plate (33) is arranged in a semicircular shape, and the arc surface of the guide plate (33) is located at the outer end of the fixing column (2).

6. A downhole rotary steerable drill bit device according to claim 5, characterized in that: The number of the servo drivers (31) is equal to the number of the through slots (6). A fixing rod (7) is fixedly connected to the center of the inner cavity of the fixing column (2). The servo driver (31) is mounted on the fixing column and corresponds to the position of the through slot (6).

7. A downhole rotary steerable drill bit device according to claim 4, characterized in that: The connecting assembly (32) comprises a fixing plate (321), the inner side wall of the fixing plate (321) is fixedly connected to the output end of the servo driver (31), the outer side wall of the fixing plate (321) is fixedly connected with connecting rods (322) in sequence from top to bottom, and one end of the connecting rod (322) away from the fixing plate (321) is fixedly connected to the guide plate (33).

8. A downhole rotary steerable drill bit device according to claim 7, characterized in that: A protective cover (8) is arranged in the cavity of the fixed column (2), and the protective cover (8) is arranged on the surface of the servo driver (31). The fixed plate (321) and the fixed rod (7) are both located in the inner cavity of the protective cover (8), and the connecting rod (322) is movably connected to the surface wall of the protective cover (8).

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