High-frequency micro-vibration percussion drilling bit device

Abstract

The utility model relates to a high-frequency micro-vibration percussion drilling bit device, and relates to the technical field of drilling tools. A high-frequency micro-vibration percussion drilling drill bit device comprises a columnar connector with a hollow cavity; the drill bit is arranged at one end of the connector, and a hole is formed in the drill bit; the baffle divides the cavity into an upper part and a lower part, and a plurality of liquid outlet channels are formed in the baffle; the vertical shaft is vertically arranged on the side, away from the drill bit, of the baffle. And the rotor is arranged on the vertical shaft in a sleeving mode, the bottom of the rotor can receive impact of water flow and open and close part of the liquid outlet channel under the action of the water flow, and the impact borne by the bottom can be conducted to the vertical shaft. The high-frequency micro-vibration percussion drilling bit device has the advantages that the drilling footage kinetic energy of a drilling bit is increased, the drilling bit is kept perpendicular in the force application direction of drilling fluid, and the drilling bit can drill well more efficiently.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of drilling tools for oil drilling, and particularly relates to a high-frequency micro-vibration impact drilling bit device. BACKGROUND

[0002] A drilling tool is a key equipment for breaking rocks and forming a wellbore in the process of oil drilling, mainly including a drill bit and a drill rod. The drill bit is a working part of the drilling tool, directly contacting with rocks, and breaking rocks by rotating or impacting to form a wellbore. There are many types of drill bits, and the specifications and shapes of the drill bits are different according to different working environments and regional environments.

[0003] A plurality of holes are formed in the drill bit, which play a very important role in the drilling process. The drill rod and the drill bit are connected through a joint, water enters the drill bit through the central hole of the drill rod and the central hole of the joint, and flows out of the holes in the drill bit, which can carry away the rock mud grinded by the drill bit.

[0004] At present, the central hole of the joint and the central hole of the drill bit in the drilling tool are straight through, and the water flow enters the central hole of the joint and the central hole of the drill bit in turn, and flows out of the holes in the drill bit to impact the rocks, but the water flow cannot act on the drill bit itself, and the driving force for drilling is still completely dependent on the electric rotary drive. At present, there is an urgent need for a drilling tool that can assist the drill bit in drilling to improve the drilling effect of the drill bit. CONTENT OF THE INVENTION

[0005] We expect to provide a drilling tool that can apply water flow to the drill bit to increase the vibration kinetic energy of the drill bit to assist the drill bit in drilling, so that the drill bit can more efficiently shake and break rocks to complete the drilling work.

[0006] The high-frequency micro-vibration impact drilling bit device provided by the application adopts the following technical scheme:

[0007] A high-frequency micro-vibration impact drilling bit device, comprising:

[0008] A cylindrical taper joint having a hollow chamber;

[0009] A drill bit is arranged at one end of the joint, and a hole is formed in the drill bit;

[0010] A baffle divides the chamber into two parts, and a plurality of liquid outlet channels are formed in the baffle;

[0011] A vertical shaft is vertically arranged on the side of the baffle away from the drill bit;

[0012] A rotor is sleeved on the vertical shaft, the bottom of the rotor can be impacted by the water flow and opened and closed under the action of the water flow, and the impact on the bottom of the rotor can be transmitted to the vertical shaft.

[0013] By adopting the technical scheme, when water flows into the chamber from one end of the connector, the upper part of the rotor is driven to rotate, the rotation of the upper part of the rotor drives the bottom part of the rotor to rotate, and the bottom part of the rotor opens a part of the liquid outlet channels and closes a part of the liquid outlet channels in the process of rotation.

[0014] The bottom part of the rotor blocks the liquid outlet channels to intercept the water flow, and the inertia of the liquid acts on the bottom part of the rotor to impact the bottom part of the rotor. With the rotation of the rotor, the bottom part of the rotor blocks another liquid outlet channel and is subjected to the inertial kinetic energy of the liquid at the side of the drill bit. With the cyclic rotation of the bottom part of the rotor, the bottom part of the rotor cyclically blocks and opens each liquid outlet channel on the baffle, and the bottom part of the rotor is subjected to the inertial impact of the water flow at the side of the drill bit above different liquid outlet channels.

[0015] The inertial kinetic energy generated by the interception of the bottom part of the rotor is transmitted to the vertical shaft, the vertical shaft transmits to the baffle, and the baffle transmits to the drill bit, so that the drill bit generates a downward vertical instantaneous pressure to vibrate at a high frequency. The effect of increasing the footage kinetic energy of the drill bit is achieved, and the drill bit remains vertical in the direction of the drilling fluid force, so that the drill bit can more efficiently grind rock.

[0016] In addition, when a part of the liquid outlet channels is closed, a part of the liquid outlet channels is also opened, so that the water flow can continuously flow in, enter the drill bit and flow out through the holes on the drill bit, and the head of the drill bit can continuously have water flowing out.

[0017] Optionally, the rotor comprises a vane arranged opposite to the baffle, and a propeller is arranged on the side of the vane away from the baffle, the vane can be cyclically rotated to open or close the liquid outlet channels under the driving of the propeller.

[0018] By adopting the technical scheme, when the liquid enters from one end of the chamber, it first contacts the propeller and drives the propeller to continuously rotate clockwise or counterclockwise, and when the liquid flows to the side of the baffle, it will be inertially pressed onto the upper surface of the vane. The vane follows the propeller to continuously rotate clockwise or counterclockwise and blocks or opens the liquid outlet channels.

[0019] When the vane closes a liquid outlet channel, the vane at this position of the baffle is subjected to the inertial kinetic energy generated by the interception downward, and with the rotation of the vane, the vane is subjected to the inertial kinetic energy of the liquid above different liquid outlet channels in the circumferential direction and transmits it to the drill bit, so that the drill bit vibrates at a high frequency and can effectively drill the rock formation.

[0020] Optionally, a bearing is arranged on the lower end of the vane corresponding to the vertical shaft.

[0021] By adopting the technical scheme, the bearing is arranged at the lower end of the vertical shaft, so that the rotation of the blade relative to the vertical shaft is smoother.

[0022] Optionally, the end of the vertical shaft away from the bearing is formed as a conical shaft, and the propeller rotating sleeve is arranged on the conical shaft.

[0023] By adopting the technical scheme, the top of the vertical shaft is formed as a conical shaft, which not only facilitates the bearing to be inserted into the lower part of the vertical shaft from top to bottom, but also can better limit the propeller and make the propeller rotate more smoothly when the propeller is impacted by water flow during rotation.

[0024] Optionally, four liquid outlet channels are uniformly and evenly arranged, and two blades are symmetrically arranged, the two blades close two symmetric liquid outlet channels, and the other two symmetric liquid outlet channels are open.

[0025] By adopting the technical scheme, four liquid outlet channels are uniformly and evenly arranged, and two blades are symmetrically arranged, so that the liquid outlet channels are staggered to be opened or closed, and the two symmetric blades rotate to be impacted by relatively uniform vibration in real time, so that vibration kinetic energy can be continuously and uniformly transmitted to the drill bit, and the drill bit can continuously vibrate.

[0026] Optionally, the chamber is divided into an upper chamber and a lower chamber, the vertical shaft and the rotor are located in the upper chamber, a center-protruding injection protruding ring is arranged on the cavity wall of the lower chamber, and the baffle is arranged on the injection protruding ring.

[0027] By adopting the technical scheme, the injection protruding ring can support and fix the baffle, so that the baffle is perpendicular to the cavity wall of the drill bit, water flow flows along the length of the cavity wall and enters the hole of the drill bit, and the center hole of the injection protruding ring can form an injection water flow inlet channel.

[0028] Optionally, the cavity wall of the upper chamber opposite to the propeller is formed as a flared portion.

[0029] By adopting the technical scheme, the flared portion can make water flow form radial injection, strengthen the impact force of liquid, provide force to the propeller, and strengthen and accelerate the rotation of the propeller.

[0030] Optionally, a gap is formed between the bottom surface of the blade and the baffle.

[0031] By adopting the technical scheme, friction between the blade and the baffle is avoided, and the rotation of the blade is affected.

[0032] In summary, the present application includes at least one of the following beneficial technical effects: the blades shield a part of the liquid outlet channels and intercept the water flow, the blades above a part of the liquid outlet channels are simultaneously affected by the inertial kinetic energy of the liquid, and the blades rotate with the propeller, the rotated blades shield another liquid outlet channel and are affected by the inertial kinetic energy of the liquid towards the drill bit side, with the cyclic rotation of the blades, the blades can cyclically shield each channel on the baffle, and the surface of the blades is impacted by the water flow towards the drill bit side with a rotating frequency above different liquid outlet channels.

[0033] The inertial kinetic energy generated by the interception of the blade surface is transmitted to the vertical shaft by the blade, to the baffle by the vertical shaft, and to the drill bit by the baffle, so that the drill bit generates a downward vertical instantaneous pressure and vibrates at a high frequency. The footage kinetic energy of the drill bit is increased, and the drill bit can drill more efficiently.

[0034] The inertial impact of the water flow is vertically applied to the blade, so that the high-frequency vibration direction is vertically downward, which is beneficial to the vertical direction of the drill bit, increases the drilling perpendicularity, and improves the drilling quality. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 is a perspective view of a high-frequency micro-vibration impact drilling drill bit device embodying the present application;

[0036] Figure 2 is a sectional view of a high-frequency micro-vibration impact drilling drill bit device embodying the present application;

[0037] Figure 3 is a structural schematic view of a rotor and a baffle embodying the present application;

[0038] BRIEF DESCRIPTION OF DRAWINGS

[0039] 1, joint; 11, chamber; 111, upper chamber; 112, lower chamber; 2, drill bit; 21, hole; 3, baffle; 31, liquid outlet channel; 32, vertical shaft; 321, conical shaft; 4, rotor; 41, blade; 42, propeller; 43, connecting part; 5, bearing; 6, injection convex ring. DETAILED DESCRIPTION

[0040] The following will be described in detail in combination with the accompanying Figures 1-3 The present application will be further described in detail.

[0041] The present application discloses a high-frequency micro-vibration impact drilling drill bit device.

[0042] Please refer to Figure 1 , Figure 2 and Figure 3The utility model provides a high frequency microvibration impact drilling drill device, including: hollow and cylindrical taper buckle joint 1 and rotor 4 in the joint 1, the inside of joint 1 forms chamber 11, and the side wall of chamber 11 is provided with the baffle 3 that will divide chamber 11 into upper chamber 111 and lower chamber 112.

[0043] The part of lower chamber 112 away from baffle 3 is fixedly connected with drill bit 2, and a plurality of holes 21 are formed in drill bit 2. Drill bit 2 is used to rotate and grind rock formation to form a well hole, water flows into upper chamber 111, passes through baffle 3 into lower chamber 112, and flows out from the holes 21 on drill bit 2, which can carry away the rock mud.

[0044] The side of baffle 3 towards upper chamber 111 is vertically fixedly connected with vertical shaft 32, the end close to baffle 3 of vertical shaft 32 is sleeved with bearing 5, and the bearing 5 and the upper surface of baffle 3 have a gap so that the two do not contact. The end away from bearing 5 of vertical shaft 32 forms conical shaft 321, and the top of vertical shaft 32 is arranged as conical shaft 321, which is beneficial to the bearing 5 from top to bottom into vertical shaft 32 and fixed at the lower part thereof.

[0045] Rotor 4 is sleeved on vertical shaft 32, and rotor 4 includes blade 41, propeller 42 and connecting portion 43 connected between blade 41 and propeller 42. Blade 41 is rotatably connected with bearing 5, so that the rotation of blade 41 is more smooth, propeller 42 is located on conical shaft 321, and connecting portion 43 is located at the middle part of vertical shaft 32.

[0046] The cavity wall of lower chamber 112 is fixedly connected with injection convex ring 6 protruding to the center, and baffle 3 is arranged on injection convex ring 6. The cross section of baffle 3 is circular, a plurality of liquid outlet channels 31 are uniformly and spaced apart arranged on baffle 3, and the number of liquid outlet channels 31 in the embodiment is four, but is not limited to four. Liquid outlet channel 31 extends through from the side close to the center of baffle 3 to the edge of baffle 3 along the radial direction of baffle 3, the position close to the center of baffle 3 is a transverse straight port, and the side away from baffle 3 is an arc-shaped port, so as to form a nearly square liquid outlet channel 31. Compared with the circular channel, the vibration of rotor 4 after interception is larger, and the impact effect is better.

[0047] Water flows into the end of joint 1 away from drill bit 2, drives propeller 42 to rotate clockwise or counterclockwise, propeller 42 drives blade 41 to rotate clockwise or counterclockwise, and blade 41 shields or opens liquid outlet channel when rotating.

[0048] The number of blade 41 is at least one, and the number is less than that of liquid outlet channel 31. All blades 41 can only shield part of liquid outlet channel 31, and the remaining liquid outlet channel 31 is in an open state. In the embodiment, two blades 41 are symmetrically arranged, two symmetric liquid outlet channels 31 are closed by the two symmetric blades 41, and the other two symmetric liquid outlet channels 31 are open.

[0049] The blade surface of the propeller 42 is arranged to be inclined, so that when it is impacted by the water flow, the propeller 42 keeps rotating clockwise or counterclockwise according to the inclination direction of the blade surface. The blades 41 are arranged in a fan shape, and when the blades 41 rotate, one liquid outlet passage 31 is necessarily closed while another liquid outlet passage 31 is opened.

[0050] When the water flow enters the joint 1 from one end of the upper chamber 111, it first contacts the propeller 42 of the rotor 4, driving the propeller 42 to rotate continuously clockwise or counterclockwise. At the same time, the liquid continues to flow to the baffle 3, and in the process, it impacts the upper surface of the blades 41 due to pressure inertia. The blades 41 rotate continuously clockwise or counterclockwise following the continuous rotation of the propeller 42 and also block or open the liquid outlet passages 31.

[0051] When the blades 41 close one liquid outlet passage 31, the blades 41 above the baffle 3 will generate inertial kinetic energy due to the blockage of the liquid flow, and the direction is towards the drill bit 2. With the rotation of the blades 41, the blades 41 receive the inertial kinetic energy of the liquid above different liquid outlet passages 31 along the circumference of the baffle 3. The blades 41 transmit the kinetic energy to the vertical shaft 32, the vertical shaft 32 transmits the kinetic energy to the baffle 3, the baffle 3 transmits the kinetic energy to the jet protrusions 6 on the wall of the lower chamber 112, and the kinetic energy is transmitted to the drill bit 2 along the wall of the lower chamber 112. Since the impact direction of the kinetic energy is towards the drill bit 2 and is transmitted to the drill bit 2, the drill bit 2 generates a downward vertical instantaneous pressure and vibrates at a high frequency, thereby increasing the footage kinetic energy of the drill bit 2 and keeping the drill bit 2 vertical in the direction of the drilling fluid force. The high-frequency vibration of the drill bit 2 enables efficient drilling of the rock formation.

[0052] In order to improve the impact effect of the water flow, the wall of the upper chamber 111 opposite to the propeller 42 is formed with a flared portion. The flared portion can form radial jetting of the water flow, strengthen the impact force of the liquid, provide additional force to the propeller 42, and strengthen and accelerate the rotation of the propeller 42, which is beneficial to the rotation of the blades 41 driven by the propeller 42.

[0053] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be covered by the protection scope of the present application.

Claims

1. A high frequency micro-impulse percussive drilling bit apparatus, characterized by: The utility model provides a kind of tapered joint (1) of columnar, it has hollow chamber (11);Drill bit (2) is arranged in the joint (1) one end, and the drill bit (2) is opened with hole (21);Baffle (3) is divided into two parts by the chamber (11), and the baffle (3) is opened with multiple liquid outlet passages (31);Vertical shaft (32) is vertically arranged in the baffle (3) side away from the drill bit (2);Rotor (4) is sleeved on the vertical shaft (32), and the bottom of the rotor (4) can accept the impact of water flow and open and close the liquid outlet passage (31) under the action of water flow, and the impact received by the bottom of the rotor (4) can be conducted to the vertical shaft (32). The rotor (4) includes blade (41) arranged opposite the baffle (3), and the blade (41) is provided with propeller (42) away from the baffle (3) side, and the blade (41) can be rotated under the driving of the propeller (42) to cyclically open or close the liquid outlet passage (31). The vertical shaft (32) is sleeved with bearing (5) corresponding to the lower end of the blade (41). The vertical shaft (32) is formed with conical shaft (321) away from the bearing (5) one end, and the propeller (42) is rotatably sleeved on the conical shaft (321). The liquid outlet passage (31) is evenly spaced with four, and the blade (41) is symmetrically provided with two, and the blade (41) closes two symmetric liquid outlet passages (31), and the other two symmetric liquid outlet passages (31) are opened. The chamber (11) is divided into upper chamber (111) and lower chamber (112), and the vertical shaft (32) and the rotor (4) are located in the upper chamber (111), and the lower chamber (112) is provided with injection convex ring (6) protruding to the center on the cavity wall, and the baffle (3) is arranged on the injection convex ring (6).

2. The high frequency micro-impulse percussive drilling bit apparatus according to claim 1, wherein: The cavity wall of the upper chamber (111) is formed with flared portion opposite the propeller (42).

3. The high frequency micro-impulse percussive drilling bit apparatus according to claim 2, wherein: The bottom surface of the blade (41) and the baffle (3) form a gap.

4. The high frequency vibratory impact drilling bit apparatus of claim 3, wherein: ​ 5. The high frequency vibratory impact drilling bit apparatus of claim 2, wherein: ​ 6. The high frequency vibratory impact drilling bit apparatus of claim 5, wherein: ​ 7. The high frequency vibratory impact drilling bit apparatus of claim 6, wherein: ​ 8. The high frequency vibratory impact drilling bit apparatus of claim 2, wherein: ​

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