Downhole jet flow auxiliary drilling speed increasing device

Abstract

The utility model belongs to the technical field of well drilling, and particularly relates to an underground jet flow auxiliary well drilling speed increasing device which comprises a well drilling rod and further comprises an accelerating drill bit, a connecting ring, a clamping block, a spring, an impeller, a flow guide plate and a bottom drill bit which are arranged on one side of the well drilling rod, and the surface of one side of the well drilling rod is rotationally connected with the accelerating drill bit and the surface of the connecting ring. According to the device, the rotating speed of the acceleration drill bit can be increased on the basis of the rotating speed of the well drilling rod through the impeller and water flow scouring work, so that the drilling work can be more efficiently carried out, and the clamping block can prevent the acceleration drill bit from rotating in the direction opposite to the direction of the well drilling rod; and meanwhile, when the water flow flows out of the flow guide plate, pushing force can be further generated on the acceleration drill bit, the rotating speed of the acceleration drill bit can be further increased, and it can be guaranteed that drilling work is more efficient.

Description

Technical Field

[0001] The utility model belongs to the technical field of drilling, and in particular relates to an underground jet-assisted drilling speed-up device. Background Art

[0002] Well drilling refers to the work of drilling holes in the ground using mechanical equipment or manpower. It usually refers to the project 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. Well drilling is widely used in national economic construction.

[0003] After checking the publication number: CN217925737U discloses a downhole jet-assisted drilling speed-up device, and this technology discloses "a connecting pipe, in which a hollow drill bit can be tightly fitted, the hollow drill bit is threadedly fixed to the bottom of the connecting pipe, and a cover plate is fixedly connected to the top of the connecting pipe, and a plurality of first spray holes are opened on the inner side wall of the hollow drill bit, and the first spray holes are used for water discharge, and the inner sealing sleeve of the hollow drill bit is provided with an inner tube with a conical plugging structure at the bottom end, and a plurality of second spray holes matching the first spray holes are opened on the side wall of the inner tube. The utility model can perform rock breaking and speed-up operations by spraying water, and through the cooperation of the threaded driving mechanism and the inner tube, the inner diameter of the water spray channel can be adjusted, thereby realizing the adjustment of the impact force of the water discharge, so that rock breaking operations can be performed on rocks of different hardness, and the speed-up effect is improved".

[0004] Although this design can adjust the inner diameter of the water ejection channel, thereby adjusting the impact force of the water discharge, so that rocks of different hardness can be broken and the speed-up effect can be improved, the inner wall of the well requires a hard drill bit for drilling. The device is difficult to make the drilling work more efficient and difficult to affect complex geology by relying solely on the flushing of water flow, and the positive effect of the device is relatively small.

[0005] In order to solve the above problems, the present application proposes a downhole jet-assisted drilling speed-up device. Utility Model Content

[0006] To solve the problems raised in the above background technology. The utility model provides a downhole jet-assisted drilling speed-up device, which can increase the speed of the accelerator drill bit on the basis of the drilling rod speed through the work of the impeller and water flow flushing, so that it can perform drilling work more efficiently, and the block can prevent the accelerator drill bit from rotating in the opposite direction to the drilling rod, and at the same time, when the water flows out from the guide plate, it can further generate a driving force for the accelerator drill bit, which can further increase its speed and ensure that its drilling work is more efficient.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a downhole jet-assisted drilling speed-up device, comprising a drilling rod, and also comprising an accelerating drill bit, a connecting ring, a clamping block, a spring, an impeller, a guide plate and a bottom drill bit arranged on one side of the drilling rod, one side surface of the drilling rod is rotatably connected to the surface of the accelerating drill bit and the surface of the connecting ring, and the connecting ring is fixedly installed on the surface of the accelerating drill bit, the surface of the accelerating drill bit is also slidably connected to the surface of the clamping block, and the clamping block is fixedly connected to the inner surface of the accelerating drill bit and one end of the spring, and the other end of the spring is fixedly connected to the inner surface of the accelerating drill bit, the inner surface of the accelerating drill bit is also fixedly installed with the impeller, and the side of the accelerating drill bit away from the drilling rod is also fixedly installed with the guide plate, and the side of the guide plate away from the accelerating drill bit is also fixedly connected to the surface of the bottom drill bit.

[0008] As a preferred embodiment of the downhole jet-assisted drilling speed-up device of the utility model, an annular groove matching the connecting ring is provided on the surface of the drilling rod.

[0009] As a preferred downhole jet-assisted drilling speed-up device of the utility model, the acceleration drill bit and the drilling rod are in the shape of a hollow cylinder.

[0010] As a preferred downhole jet-assisted drilling speed-up device of the utility model, the shape of the block is a right-angle ladder column, and a groove matching the block is formed on the surface of one side of the drilling rod close to the accelerating drill bit.

[0011] As a preferred downhole jet-assisted drilling speed-up device of the utility model, the spring and the clamping block are arranged at equal angles on the surface of the accelerating drill bit.

[0012] As a preferred downhole jet-assisted drilling speed-up device of the utility model, the surface of the guide plate is provided with rectangular grooves symmetrically with the axis of the acceleration drill bit as the midpoint, and the grooves inside the guide plate do not overlap with the axis of the acceleration drill bit.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the rotation speed of the accelerator drill bit can be increased on the basis of the rotation speed of the drilling rod through the work of the impeller and the water flow flushing, so that it can perform drilling work more efficiently, and the clamping block can prevent the accelerator drill bit from rotating in the opposite direction to the drilling rod. At the same time, when the water flows out from the guide plate, it can further generate a driving force for the accelerator drill bit, which can further increase its rotation speed and ensure that its drilling work is more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a structural schematic diagram of the drilling rod and the acceleration drill bit in the utility model in a separated state;

[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of the drilling rod and the guide plate in the utility model;

[0018] Figure 4 It is a schematic diagram of the structure of the clamping block and the impeller in the utility model;

[0019] Figure 5 It is a schematic diagram of the block and spring structure in the utility model;

[0020] In the figure:

[0021] 1. Drilling rod; 2. Accelerating drill bit; 3. Connecting ring; 4. Block; 5. Spring; 6. Impeller; 7. Guide plate; 8. Bottom drill bit. 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] Embodiment 1

[0024] like Figure 1 As shown:

[0025] A downhole jet-assisted drilling speed-up device comprises a drilling rod 1.

[0026] In this embodiment: the existing {public announcement number}: CN217925737U discloses a downhole jet-assisted drilling speed-up device, and this patent discloses a hollow drill bit. The drilling rod 1 in the present application document adopts the same technical means in this prior art. This technical means will not be described one by one here. For details about the improvement of this prior art, please refer to the disclosed technology below; to solve the technical problems existing in this prior art, as disclosed in the background technology above, "the inner wall of the well requires a hard drill bit for drilling, and the device is difficult to make the drilling work more efficient by only relying on the flushing of water flow, and it is difficult to have an impact on complex geology. The positive effect of the device is small". In terms of combined use, this problem is obviously a real problem that exists and is relatively difficult to solve. In view of this, in order to solve the above problems, an acceleration drill bit 2 and a connecting ring 3 are added on this basis.

[0027] More specifically:

[0028] like Figure 1 - Figure 5 As shown:

[0029] In combination with the above content: it also includes an acceleration drill bit 2, a connecting ring 3, a clamping block 4, a spring 5, an impeller 6, a guide plate 7 and a bottom drill bit 8 arranged on one side of the drilling rod 1. One side surface of the drilling rod 1 is rotatably connected to the acceleration drill bit 2 and the surface of the connecting ring 3, and the connecting ring 3 is fixedly installed on the surface of the acceleration drill bit 2. The surface of the acceleration drill bit 2 is also slidably connected to the surface of the clamping block 4, and the clamping block 4 is fixedly connected to one end of the spring 5 on the inner surface of the acceleration drill bit 2, and the other end of the spring 5 is fixedly connected to the inner surface of the acceleration drill bit 2. The inner surface of the acceleration drill bit 2 is also fixedly installed with an impeller 6, and the side of the acceleration drill bit 2 away from the drilling rod 1 is also fixedly installed with a guide plate 7, and the side of the guide plate 7 away from the acceleration drill bit 2 is also fixedly connected to the surface of the bottom drill bit 8.

[0030] In this embodiment: when the drilling rod 1 rotates to perform drilling work, the drilling rod 1 drives the acceleration drill bit 2 and the bottom drill bit 8 to rotate synchronously through the connecting ring 3 and the clamping block 4. At this time, the right-angle surface of the clamping block 4 and the drilling rod 1 are in a tightly connected state. When there is no water flow passing through the drilling rod 1 and the acceleration drill bit 2, the drilling rod 1 and the acceleration drill bit 2 are in a relatively static state. When water flow is input through the drilling rod 1, the water flow will pass through the drilling rod 1 and enter the acceleration drill bit 2, and flush to the surface of the impeller 6. At this time, the impeller 6 will generate thrust on the acceleration drill bit 2 under the flushing of the water flow, so that the acceleration drill bit 2 can rotate with the drilling rod 1, and when the acceleration drill bit 2 rotates, the acceleration drill bit 2 will drive the clamping block 4 and the drilling rod 1. Sliding occurs, the inclined surface of the block 4 and the drilling rod 1 generate stress, and the block 4 is contracted to the inside of the acceleration drill bit 2 under the obstruction of the drilling rod 1, and the spring 5 will also contract. At this time, the acceleration drill bit 2 can perform additional accelerated rotation through the water flow on the basis of the rotation of the drilling rod 1, and the rotation direction is consistent with the rotation direction of the drilling rod 1. At the same time, the bottom drill bit 8 integrated with the acceleration drill bit 2 can also perform accelerated rotation synchronously. When the water flows through the impeller 6, it will flow to the inside of the guide plate 7. When the water flows through the internal channel of the guide plate 7, the eccentrically arranged channel and the water flow will again generate eccentric force on the acceleration drill bit 2, and further provide power for the rotation of the acceleration drill bit 2, thereby making the rotary drilling work of the drilling rod 1 more efficient.

[0031] Going further:

[0032] In an optional embodiment, an annular groove matching the connecting ring 3 is formed on the surface of the drilling rod 1 .

[0033] In this embodiment, the annular groove formed on the surface of the drilling rod 1 can provide a stable connection point for the acceleration drill bit 2 , which is beneficial to the rotation between the two and the acceleration work of the acceleration drill bit 2 .

[0034] Going further:

[0035] In an optional embodiment, the acceleration drill bit 2 and the drilling rod 1 are in the shape of a hollow cylinder.

[0036] In this embodiment, the hollow accelerating drill bit 2 and the drilling rod 1 can allow water to flow stably through the inside of the two and flush the water to the surface of the impeller 6, thereby providing stable power for the accelerated rotation of the accelerating drill bit 2 through the impeller 6.

[0037] Going further:

[0038] In an optional embodiment, the shape of the block 4 is a right-angled trapezoidal column, and a groove matching the block 4 is formed on a surface of the drilling rod 1 on one side close to the accelerating drill bit 2 .

[0039] In this embodiment, the block 4 arranged on the right-angle ladder column can make the acceleration drill bit 2 and the drilling rod 1 form a relatively static state when stress is generated between the right-angle side of the block 4 and the drilling rod 1, and when stress is generated between the inclined surface of the block 4 and the drilling rod 1, the drilling rod 1 and the acceleration drill bit 2 can rotate flexibly.

[0040] Going further:

[0041] In an optional embodiment, the spring 5 and the block 4 are arranged at equal angles on the surface of the acceleration drill bit 2 .

[0042] In this embodiment: the block 4 and the spring 5 arranged at equal angles on the surface of the acceleration drill bit 2 can make the rotation of the acceleration drill bit 2 and the drilling rod 1 more purposeful, so that the acceleration drill bit 2 and the drilling rod 1 can only perform one-way rotation, so that the accelerated drilling work of the acceleration drill bit 2 can be realized.

[0043] Going further:

[0044] In an optional embodiment, rectangular grooves are provided on the surface of the guide plate 7 in a centrally symmetrical manner with the axis of the accelerating drill bit 2 as the midpoint, and the grooves inside the guide plate 7 do not overlap with the axis of the accelerating drill bit 2.

[0045] In this embodiment, the groove eccentrically opened inside the guide plate 7 can further provide outward power to accelerate the rotation of the drill bit 2 and the connecting ring 3 when water flows through and sprays out, so that the drilling work can be carried out more efficiently.

[0046] The working principle and use process of the utility model are as follows: when the drilling rod 1 rotates to perform drilling work, the drilling rod 1 drives the acceleration drill bit 2 and the bottom drill bit 8 to rotate synchronously through the connecting ring 3 and the clamping block 4. At this time, the right-angle surface of the clamping block 4 and the drilling rod 1 are in a tightly connected state. When there is no water flow passing through the drilling rod 1 and the acceleration drill bit 2, the drilling rod 1 and the acceleration drill bit 2 are in a relatively static state. When water flow is input through the drilling rod 1, the water flow will pass through the drilling rod 1 and enter the acceleration drill bit 2, and flush to the surface of the impeller 6. At this time, the impeller 6 will generate thrust to the acceleration drill bit 2 under the flushing of the water flow, so that the acceleration drill bit 2 can rotate with the drilling rod 1, and when the acceleration drill bit 2 rotates, the acceleration drill bit 2 will drive the clamping block 4 and the drill bit 8 to rotate. Sliding occurs between the well rods 1, and stress is generated between the inclined surface of the block 4 and the drilling rod 1. Under the obstruction of the drilling rod 1, the block 4 is contracted to the inside of the accelerating drill bit 2, and the spring 5 is also contracted. At this time, the accelerating drill bit 2 can perform additional accelerated rotation through the water flow on the basis of the rotation of the drilling rod 1, and the rotation direction is consistent with the rotation direction of the drilling rod 1. At the same time, the bottom drill bit 8 integrated with the accelerating drill bit 2 can also perform accelerated rotation synchronously. When the water flows through the impeller 6, it will flow to the inside of the guide plate 7. When the water flows through the internal channel of the guide plate 7, the eccentrically arranged channel and the water flow will again generate eccentric force on the accelerating drill bit 2, and further provide power for the rotation of the accelerating drill bit 2, thereby making the rotary drilling work of the drilling rod 1 more efficient.

[0047] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A downhole jet-assisted drilling speed-up device, comprising a drilling rod (1), characterized in that: The invention also comprises an accelerating drill bit (2), a connecting ring (3), a clamping block (4), a spring (5), an impeller (6), a guide plate (7) and a bottom drill bit (8) arranged on one side of a drilling rod (1); a surface of one side of the drilling rod (1) is rotatably connected to the accelerating drill bit (2) and the surface of the connecting ring (3); the connecting ring (3) is fixedly mounted on the surface of the accelerating drill bit (2); the surface of the accelerating drill bit (2) is also slidably connected to the surface of the clamping block (4); and the clamping block (4) is rotatably connected to the surface of the accelerating drill bit (2). The inner surface of the acceleration drill bit (2) is fixedly connected to one end of the spring (5), and the other end of the spring (5) is fixedly connected to the inner surface of the acceleration drill bit (2). The inner surface of the acceleration drill bit (2) is also fixedly mounted with the impeller (6). The guide plate (7) is also fixedly mounted on the side of the acceleration drill bit (2) away from the drilling rod (1), and the side of the guide plate (7) away from the acceleration drill bit (2) is also fixedly connected to the surface of the bottom drill bit (8).

2. The downhole jet-assisted drilling speed-up device according to claim 1, characterized in that: The surface of the drilling rod (1) is provided with an annular groove matching the connecting ring (3).

3. The downhole jet-assisted drilling speed-up device according to claim 1, characterized in that: The accelerating drill bit (2) and the drilling rod (1) are in the shape of a hollow cylinder.

4. The downhole jet-assisted drilling speed-up device according to claim 1, characterized in that: The block (4) is in the shape of a right-angled ladder column, and a groove matching the block (4) is provided on a surface of one side of the drilling rod (1) close to the accelerating drill bit (2).

5. The downhole jet-assisted drilling speed-up device according to claim 1, characterized in that: The spring (5) and the clamping block (4) are arranged at equal angles on the surface of the accelerating drill bit (2).

6. The downhole jet-assisted drilling speed-up device according to claim 1, characterized in that: The surface of the guide plate (7) is provided with rectangular grooves symmetrically with the axis of the acceleration drill bit (2) as the midpoint, and each groove inside the guide plate (7) does not overlap with the axis of the acceleration drill bit (2).

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