A push-type guiding device for drilling

Abstract

The present invention discloses a push-type guiding device for drilling, belonging to the technical field of drilling. It includes a pushing unit, and a plurality of flow guiding components are circumferentially arrayed on the outer peripheral side of the pushing unit. A plurality of pushing chutes, first through holes and two first cavities are circumferentially arrayed inside the pushing unit. In the present invention, the main hydraulic system inside the hydraulic unit will quickly transport hydraulic oil to the inside of the pushing chute through the first through hole. The pressure of the hydraulic oil will drive the first plug plate, the guide rod on one side, the sliding plate, the connecting rod and the connecting seat to move through the first round hole, so that the first piston will assist in driving the round rod, the third piston and the pushing arm to move towards the outside of the pushing unit and contact the inner wall of the drilling. By compensating the pressure of the pushing arm, it helps to reduce the resistance of the annular pressure and mud pressure in the well to the pushing arm, helps to improve the response speed of the pushing arm during the process of guiding the drill bit, and at the same time reduces the load of the main hydraulic system, thereby effectively improving the overall use effect of the device.

Description

Technical Field

[0001] The present invention belongs to the technical field of drilling, and particularly relates to a push-type guiding device for drilling. Background Art

[0002] The push-type guiding device for drilling is a key device in directional drilling. Its accuracy directly affects the wellbore trajectory control effect. It is mainly used to control the wellbore trajectory and achieve precise directional drilling. Its core function is to generate a deflection force by mechanically pushing against the wellbore wall and guide the drill bit to drill along a preset path.

[0003] For example, in a Chinese patent document (CN108894729A), a hydraulic push-type rotary steering tool includes a mandrel, a mandrel hydraulic circuit connecting sleeve, an upper sleeve body, an upper seal bearing assembly, a middle sleeve body, a static and dynamic hydraulic circuit connecting assembly, a hydraulic push assembly, a lower joint, a lower sleeve body, and a lower seal bearing assembly. The invention has a reasonable and compact structure and is convenient to use. It converts liquid pressure into a push force and controls the push force of each hydraulic push assembly by controlling the hydraulic oil pressure in each hydraulic push branch to obtain the target guiding force during the guiding operation. It does not require the installation of any electronic control device, which simplifies the structure and reduces the radial dimension. Moreover, the hydraulic oil of the hydraulic system is selected as high-temperature-resistant aviation hydraulic oil, which can be applicable to high-temperature environments. However, during the use of this device, as the drill bit continuously moves downward, the mud pressure in the well will increase, which may affect the response speed of the push arm and further affect the use accuracy of the device. Therefore, improvements are needed. Summary of the Invention

[0004] The purpose of the present invention is to provide a push-type guiding device for drilling to solve the problem that during the use of the prior art, as the drill bit continuously moves downward, the mud pressure in the well will increase, which may affect the response speed of the push arm and further affect the use accuracy of the device.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A push-type guiding device for drilling includes a pushing unit. A plurality of diversion components are circumferentially arranged in an array on the outer peripheral side of the pushing unit. A plurality of pushing chutes, first through holes, and two first cavities are circumferentially arranged in an array inside the pushing unit. A third piston and a pushing arm are respectively arranged inside the pushing chutes. An auxiliary cleaning component for cleaning the pushing chutes is arranged inside the third piston. An auxiliary pushing component is arranged on the side of the third piston away from the pushing arm.

[0007] The auxiliary pushing component includes a mounting block. Inside the mounting block, a connecting seat is slidably connected through a second cavity opened therein. Both sides of the connecting seat extend to the outside of the mounting block and are fixedly connected with partition plates. Second through holes are opened on both sides inside the partition plates. On the other side of the partition plates, there is a connecting box. Inside the connecting box, a round rod is slidably connected. One side of the round rod is connected to a third piston. On both sides inside the connecting box, third through holes are communicated. On one side of the connecting box, there is an energy storage box. The thrust of the round rod on the pushing arm is adjusted through the communication state of the second through holes and the third through holes.

[0008] As a further description of the above technical solution:

[0009] Elastic protective layers are fixedly connected to both sides of the connecting seat. The other side of the elastic protective layer is fixedly connected to the inner wall of the mounting block. The connecting seat is slidably connected inside the first cavity. The side of the connecting box away from the partition plate is fixedly connected to the inner wall of the pushing unit. A third cavity is opened on one side inside the pushing unit.

[0010] As a further description of the above technical solution:

[0011] The energy storage box is arranged inside the third cavity, and the energy storage box is communicated with the first cavity through a first connecting pipe. A switch valve, a flow valve, a pressure valve, and a one-way valve are arranged on the first connecting pipe. A first spring is fixedly connected to one side inside the energy storage box. The other side of the first spring is fixedly connected to a second piston. The second piston is slidably sealed inside the energy storage box. On the side of the second piston away from the first spring, there is a second connecting pipe. One end of the second connecting pipe is communicated with the energy storage box, and the other end of the second connecting pipe is communicated with a liquid sac. The bottom of the liquid sac is fixedly connected with a cross plate, and a convex block is arranged at the bottom of the cross plate.

[0012] As a further description of the above technical solution:

[0013] A hydraulic unit, a corrector, and a communication unit are sequentially arranged on the top of the pushing unit. A drill bit is arranged at the bottom of the pushing unit. Spindles are arranged inside the hydraulic unit, the corrector, and the communication unit. The channels inside the spindles are communicated with the drill bit. The first through hole is communicated with the pushing chute. Two first cavities are symmetrically arranged on both sides of the first through hole. The third piston is slidably sealed inside the pushing chute. One side of the third piston is fixedly connected to the pushing arm.

[0014] As a further description of the above technical solution:

[0015] One side of the liquid sac is communicated with a liquid inlet pipe. The other end of the liquid inlet pipe is communicated with the channel inside the spindle. Third springs are arranged on both sides of the liquid sac. The two sides of the third springs are respectively fixedly connected to the cross plate and the inner wall of the pushing unit. The third through hole is set as a one-way through hole.

[0016] As a further description of the above technical solution:

[0017] Both sides inside the mounting block are fixedly connected with mounting cylinders. A guide rod is slidably connected inside the mounting cylinder. One end of the guide rod is fixedly connected with a sliding plate. The sliding plate is slidably connected inside the mounting cylinder. One end of the guide rod is fixedly connected with a sliding plate. The side of the sliding plate away from the guide rod is fixedly connected with a connecting rod. The other end of the connecting rod extends outside the mounting cylinder and is fixedly connected with a connecting seat. The sliding plate and the connecting rod are both slidably connected inside the mounting cylinder. An elastic valve sheet is arranged on the outer peripheral side of the guide rod. Both sides of the elastic valve sheet are fixedly connected with the sliding plate and the inner wall of the mounting cylinder respectively.

[0018] As a further description of the above technical solution:

[0019] A first piston is slidably sealed inside the connection box. One side of the first piston is fixedly connected with a round rod, and the round rod is slidably sealed inside the connection box.

[0020] As a further description of the above technical solution:

[0021] A first baffle plate and a second baffle plate are respectively arranged on both sides of the mounting block. The opposite sides of the first baffle plate and the second baffle plate are both fixedly connected with one end of the guide rod. First round holes are arranged on both sides of the first baffle plate. Second round holes are arranged on both sides of the second baffle plate. The first baffle plate and the second baffle plate are arranged in a cross manner. The first round holes and the second round holes are arranged in a cross manner. The side of the third piston away from the pushing arm is fixedly connected with a second spring. The other side of the second spring is fixedly connected with the inner wall of the pushing unit. The mounting block is arranged inside the first through hole, and the outer peripheral side of the mounting block is fixedly connected with the inner wall of the pushing unit.

[0022] As a further description of the above technical solution:

[0023] The diversion assembly includes a diversion groove, which is composed of a straight diversion groove and a spiral diversion groove. The straight diversion groove is communicated with the spiral diversion groove, and the straight diversion groove is arranged on the side opposite to the drill bit. A turbine is arranged inside the straight diversion groove. A rotating shaft is fixedly connected inside the turbine. The rotating shaft is rotatably connected inside the pushing unit. The side of the rotating shaft away from the turbine extends to the third cavity and is fixedly connected with a convex block.

[0024] As a further description of the above technical solution:

[0025] The auxiliary cleaning component includes an inner cavity, which is arranged inside the round rod. One side of the inner cavity communicates with two one-way conveying pipelines, both of which are arranged inside the round rod, and one one-way conveying pipe is arranged on one side of the first piston. The side of the inner cavity away from the one-way conveying pipeline communicates with a plurality of one-way nozzles through a fourth cavity, and the fourth cavity is arranged inside the third piston. The one-way nozzles are arranged on the side opposite to the pushing arm.

[0026] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows:

[0027] 1. In the present invention, through the arranged auxiliary pushing component, the main hydraulic system inside the hydraulic unit will quickly deliver hydraulic oil to the pushing chute through the first through hole. At this time, the pressure of the hydraulic oil will quickly be greater than the opening value of the elastic valve plate on one side. The pressure of the hydraulic oil will drive the first plug, the guide rod on one side, the sliding plate, the connecting rod, and the connecting seat to move through the first round hole. At this time, the external controller opens the switching valve on the first connecting pipe, and the acting force of the first spring will drive the second piston to deliver the liquid on one side inside the energy storage tank to one side inside the connecting box through the connected second through hole and third through hole. At this time, the first piston will assist in driving the round rod, the third piston, and the pushing arm to move outward to the outside of the pushing unit and contact the inner wall of the drill well. By compensating the pressure of the pushing arm, the resistance of the well annulus pressure and the mud pressure to the pushing arm is reduced, the response speed of the pushing arm during the process of guiding the drill bit is improved, and at the same time, the load of the main hydraulic system is reduced, thereby effectively improving the overall use effect of the device.

[0028] 2. In the present invention, through the arranged diversion component, the external water supply device cools the drill bit through the channel inside the mandrel. At this time, the mud generated at the drill bit will enter the straight guide groove. At this time, the flow force of the mud inside the straight guide groove will drive the turbine, the rotating shaft, and the convex block to rotate, continuously delivering the liquid inside the liquid sac to the inside of the energy storage tank for energy storage, improving the overall energy utilization rate during the use of the device. Then, the mud liquid will be delivered to the spiral guide groove. Through the arranged spiral guide groove, the mud liquid rotates and flows between the pushing unit and the well wall, forming a local eddy current, dispersing the impact force of the mud liquid directly on the pushing arm, avoiding concentrated action on a certain area of the pushing arm, assisting in improving the service life of the pushing arm, and the cuttings are carried away from the pushing surface of the pushing arm by the rotating flow field, reducing the accumulation of cuttings on its surface, assisting in reducing the jamming and wear phenomena of the pushing arm, and further improving the overall service life of the pushing arm.

[0029] 3. In the present invention, through the auxiliary cleaning component provided, the first piston will spray the liquid on one side inside the connection box into the pushing chute through the one-way conveying pipeline, the inner cavity, the fourth cavity and multiple one-way nozzles to clean the rock debris adhered inside the pushing chute, which helps to reduce the jamming of the rock debris on the pushing arm, and further prevents the failure of the tool face angle control caused by jamming, ensuring the movement stability of the pushing arm, and thus ensuring the guiding accuracy of the device during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is the overall three-dimensional structure schematic diagram of the present invention;

[0031] Figure 2 is the partial overall three-dimensional structure schematic diagram of the present invention;

[0032] Figure 3 In the present invention Figure 2 is the partial enlarged structure schematic diagram at A;

[0033] Figure 4 In the present invention Figure 2 is the partial enlarged structure schematic diagram at B;

[0034] Figure 5 is the overall three-dimensional structure schematic diagram of the auxiliary pushing component in the present invention;

[0035] Figure 6 is the internal three-dimensional structure schematic diagram of the mounting block and the connection box in the present invention;

[0036] Figure 7 In the present invention Figure 6 is the partial enlarged structure schematic diagram at C;

[0037] Figure 8 is the overall structure schematic diagram of the auxiliary pushing component in another perspective in the present invention;

[0038] Figure 9 is the internal three-dimensional structure schematic diagram of the energy storage box in the present invention;

[0039] Figure 10 In the present invention Figure 9 is the partial enlarged structure schematic diagram at D.

[0040] Legend Explanation:

[0041] 1. Communication unit; 2. Hydraulic unit; 3. Pushing unit; 4. Drill bit; 5. Pushing chute; 6. First through hole; 7. Flow guiding assembly; 701. Straight guiding groove; 702. Spiral guiding groove; 703. Turbine; 704. Rotating shaft; 8. Auxiliary pushing assembly; 801. Mounting block; 802. Mounting cylinder; 803. Guide rod; 804. Sliding plate; 805. Elastic valve plate; 806. Connecting rod; 807. Connecting seat; 808. Elastic protective layer; 809. Connecting box; 810. First piston; 811. Round rod; 812. Partition plate; 813. Second through hole; 814. Third through hole; 815. First connecting pipe; 816. Energy storage box; 817. First spring; 818. Second piston; 819. Second connecting pipe; 820. Liquid sac; 821. Horizontal plate; 822. Protrusion; 9. Auxiliary cleaning assembly; 901. Inner cavity; 902. Unidirectional nozzle; 10. First plug board; 11. Second plug board; 12. First round hole; 13. Second round hole; 14. Second spring; 15. Third piston; 16. Pushing arm. Detailed implementation manner

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0043] Please refer to Figures 1 - 10 , the present invention provides a technical solution: a pushing type guiding device for drilling, including a pushing unit 3. A plurality of flow guiding assemblies 7 are circumferentially arranged in an array on the outer peripheral side of the pushing unit 3. A plurality of pushing chutes 5, first through holes 6 and two first cavities are circumferentially arranged inside the pushing unit 3. A third piston 15 and a pushing arm 16 are respectively arranged inside the pushing chute 5. An auxiliary cleaning assembly 9 for cleaning the pushing chute 5 is arranged inside the third piston 15. An auxiliary pushing assembly 8 is arranged on the side of the third piston 15 away from the pushing arm 16;

[0044] The auxiliary pushing component 8 includes a mounting block 801. Inside the mounting block 801, a connecting seat 807 is slidably connected through a second cavity opened therein. Both sides of the connecting seat 807 extend to the outside of the mounting block 801 and are fixedly connected with partition plates 812. Second through holes 813 are opened on both sides inside the partition plates 812. On the other side of the partition plates 812, there is a connecting box 809. Inside the connecting box 809, a round rod 811 is slidably connected. One side of the round rod 811 is connected to the third piston 15. On both sides inside the connecting box 809, third through holes 814 are communicated. On one side of the connecting box 809, there is an energy storage box 816. The thrust of the round rod 811 on the pushing arm 16 is adjusted through the communication state of the second through holes 813 and the third through holes 814. Elastic protective layers 808 are fixedly connected to both sides of the connecting seat 807. The other side of the elastic protective layers 808 is fixedly connected to the inner wall of the mounting block 801. The connecting seat 807 is slidably connected inside the first cavity. The side of the connecting box 809 away from the partition plate 812 is fixedly connected to the inner wall of the pushing unit 3. Inside one side of the pushing unit 3, a third cavity is opened. The energy storage box 816 is arranged inside the third cavity, and the energy storage box 816 is communicated with the first cavity through a first connecting pipe 815. A switch valve, a flow valve, a pressure valve and a one-way valve are arranged on the first connecting pipe 815. A first spring 817 is fixedly connected to one side inside the energy storage box 816. The other side of the first spring 817 is fixedly connected to a second piston 818. The second piston 818 is slidably sealed inside the energy storage box 816, and on the side of the second piston 81, away from the first spring 817, there is a second connecting pipe 819. One end of the second connecting pipe 819 is communicated with the energy storage box 816, and the other end of the second connecting pipe 819 is communicated with a liquid sac 820. The bottom of the liquid sac 820 is fixedly connected with a cross plate 821. A convex block 822 is arranged at the bottom of the cross plate 821. On the top of the pushing unit 3, a hydraulic unit 2, a corrector and a communication unit 1 are arranged in sequence. At the bottom of the pushing unit 3, there is a drill bit 4. Inside the hydraulic unit 2, the corrector and the communication unit 1, there are mandrels. The channels inside the mandrels are communicated with the drill bit 4. The first through hole 6 is communicated with the pushing chute 5. Two first cavities are symmetrically arranged on both sides of the first through hole 6. The third piston 15 is slidably sealed inside the pushing chute 5. One side of the third piston 15 is fixedly connected to the pushing arm 16. One side of the liquid sac 820 is communicated with a liquid inlet pipe, and the other end of the liquid inlet pipe is communicated with the channel inside the mandrel. On both sides of the liquid sac 820, there are third springs. The two sides of the third springs are respectively fixedly connected to the cross plate 821 and the inner wall of the pushing unit 3. The third through holes 814 are arranged as one-way through holes. Inside both sides of the mounting block 801, mounting cylinders 802 are fixedly connected. Inside the mounting cylinders 802, guide rods 803 are slidably connected. One end of the guide rod 803 is fixedly connected with a sliding plate 804. The sliding plate 804 is slidably connected inside the mounting cylinder 802. One end of the guide rod 803 is fixedly connected with a sliding plate 804. On the side of the sliding plate 804 away from the guide rod 803, a connecting rod 806 is fixedly connected. The other end of the connecting rod 806 extends to the outside of the mounting cylinder 802 and is fixedly connected to the connecting seat 807.The sliding plate 804 and the connecting rod 806 are both slidably connected inside the mounting cylinder 802. An elastic valve plate 805 is provided on the outer peripheral side of the guide rod 803. Both sides of the elastic valve plate 805 are fixedly connected to the sliding plate 804 and the inner wall of the mounting cylinder 802 respectively. A first piston 810 is slidably sealed inside the connection box 809. One side of the first piston 810 is fixedly connected to the round rod 811, and the round rod 811 is slidably sealed inside the connection box 809. First blocking plates 10 and second blocking plates 11 are respectively provided on both sides of the mounting block 801. Opposite sides of the first blocking plate 10 and the second blocking plate 11 are both fixedly connected to one end of the guide rod 803. First circular holes 12 are provided on both sides of the first blocking plate 10, and second circular holes 13 are provided on both sides of the second blocking plate 11. The first blocking plate 10 and the second blocking plate 11 are arranged in a cross pattern, and the first circular holes 12 and the second circular holes 13 are arranged in a cross pattern. A second spring 14 is fixedly connected to the side of the third piston 15 away from the pushing arm 16, and the other side of the second spring 14 is fixedly connected to the inner wall of the pushing unit 3. The mounting block 801 is arranged inside the first through hole 6, and the outer peripheral side of the mounting block 801 is fixedly connected to the inner wall of the pushing unit 3.,

[0045] Specific implementation method: The communication unit 1, hydraulic unit 2, pushing unit 3 and drill bit 4 are transported into the wellbore. As the drill bit 4 continuously drills downward, when it is necessary to adjust the use angle of the drill bit 4, the main hydraulic system inside the hydraulic unit 2 will quickly transport hydraulic oil into the pushing chute 5 through the first through hole 6. When the hydraulic oil passes through the mounting block 801, the pressure of the hydraulic oil will quickly be greater than the opening value of the elastic valve plate 805 on one side. At this time, the pressure of the hydraulic oil will drive the first plug 10, the guide rod 803 on one side, the sliding plate 804 and the connecting rod 806 to move through the first round hole 12, so that the connecting rod 806 drives the connecting seat 807 to move towards the direction of the third piston 15. At this time, the external controller opens the switching valve on the first connecting pipe 815, and the acting force of the first spring 817 will drive the second piston 818 to transport the liquid on one side inside the energy storage tank 816 to the inside of the first cavity through the first connecting pipe 815, and transport it to the inside of the connecting box 809 through the connected second through hole 813 and third through hole 814. At this time, the first piston 810 will assist in driving the round rod 811, the third piston 15 and the pushing arm 16 to move towards the outside of the pushing unit 3 and contact the inner wall of the wellbore. By compensating the pressure of the pushing arm 16, it helps to reduce the resistance of the annular pressure and mud pressure in the well to the pushing arm 16, helps to improve the response speed of the pushing arm 16 during the guiding process of the drill bit 4, and at the same time reduces the load of the main hydraulic system, thereby effectively improving the overall use effect of the device. When it is necessary to contact the pushing arm 16 with the well wall, the main hydraulic system inside the hydraulic unit 2 stops working, and the elastic protective layer 808 will reset the connecting seat 807. When it is necessary to retract the pushing arm 16, the main hydraulic system inside the hydraulic unit 2 recovers the hydraulic oil inside the pushing chute 5 through the first through hole 6. At this time, the elastic valve plate 805 on the other side opens, and the connecting seat 807 moves away from the third piston 15, so that the second through hole 813 and the third through hole 814 on the other side are connected, and the liquid inside the energy storage tank 816 is transported to the other side inside the connecting box 809, so that the first piston 810 drives the round rod 811, the third piston 15 and the pushing arm 16 to retract, which helps to improve the retraction speed of the pushing arm 16 during use and further improves the overall use effect of the device.

[0046] The diversion component 7 includes a diversion groove, which is composed of a straight diversion groove 701 and a spiral diversion groove 702. The straight diversion groove 701 is connected to the spiral diversion groove 702, and the straight diversion groove 701 is arranged on the side opposite to the drill bit 4. A turbine 703 is arranged inside the straight diversion groove 701, a rotating shaft 704 is fixedly connected inside the turbine 703, the rotating shaft 704 is rotatably connected inside the pushing unit 3, and one side of the rotating shaft 704 away from the turbine 703 extends to the third cavity and is fixedly connected to the convex block 822.

[0047] Specific implementation manner: The external water supply device cools the drill bit 4 through the channel inside the mandrel. At this time, the mud generated at the drill bit 4 will enter the straight guide groove 701. At this time, the flow force of the mud inside the straight guide groove 701 will drive the turbine 703 to rotate, so that the turbine 703 drives the convex block 822 to rotate through the rotating shaft 704. During the rotation of the convex block 822, it will continuously squeeze the liquid sac 820, the cross plate 821 and the third spring, continuously conveying the liquid inside the liquid sac 820 into the energy storage box 816, and making the liquid squeeze the first spring 817 and the second piston 818 to store energy, improving the overall energy utilization rate of the device during use. After that, the mud liquid will be conveyed into the spiral guide groove 702. By setting the spiral guide groove 702, the mud liquid generates a rotational flow between the pushing unit 3 and the wellbore wall, forming a local eddy current, dispersing the impact force of the mud liquid directly on the pushing arm 16, avoiding concentrated action on a certain area of the pushing arm 16, and assisting in improving the service life of the pushing arm 16. Moreover, the cuttings are carried away from the pushing surface of the pushing arm 16 by the rotational flow field, reducing the accumulation of cuttings on its surface, reducing the jamming and wear phenomena of the pushing arm 16, and further improving the overall service life of the pushing arm 16. The material of the turbine 703 can be selected according to actual needs. Among them, the depth and angle of the straight guide groove 701 and the spiral guide groove 702 can be selected according to actual needs.

[0048] The auxiliary cleaning assembly 9 includes an inner cavity 901, the inner cavity 901 is arranged inside the round rod 811, two one-way conveying pipes are communicated on one side of the inner cavity 901, both of the two one-way conveying pipes are arranged inside the round rod 811, and one one-way conveying pipe is arranged on one side of the first piston 810. The side of the inner cavity 901 away from the one-way conveying pipe is communicated with a plurality of one-way nozzles 902 through a fourth cavity, the fourth cavity is arranged inside the third piston 15, and the one-way nozzles 902 are arranged on the side opposite to the pushing arm 16.

[0049] Specific implementation manner: The first piston 810 will convey the liquid on one side inside the connection box 809 to the inner cavity 901 opened inside the round rod 811 through the one-way conveying pipe. After that, it is sprayed into the pushing chute 5 through the fourth cavity and the plurality of one-way nozzles 902 communicated with the inner cavity 901 to clean the cuttings adhered inside the pushing chute 5, assisting in reducing the jamming phenomenon of the cuttings on the pushing arm 16, thereby preventing the tool face angle control failure phenomenon caused by jamming, ensuring the movement stability of the pushing arm 16, and further ensuring the guiding accuracy of the device during use.

[0050] Working principle: When in use, first transport the communication unit 1, hydraulic unit 2, pushing unit 3 and drill bit 4 into the wellbore. As the drill bit 4 continuously drills downward, the external water supply device cools the drill bit 4 through the channel inside the mandrel. At this time, the mud generated at the drill bit 4 will enter the straight guide groove 701. At this time, the flow force of the mud inside the straight guide groove 701 will drive the turbine 703 to rotate, so that the turbine 703 drives the convex block 822 to rotate through the rotating shaft 704. During the rotation of the convex block 822, it will continuously squeeze the liquid sac 820, the transverse plate 821 and the third spring, continuously transport the liquid inside the liquid sac 820 into the energy storage tank 816, and make the liquid squeeze the first spring 817 and the second piston 818 to store energy, improving the overall energy utilization rate of the device during use. After that, the mud liquid will be transported into the spiral guide groove 702. Through the set spiral guide groove 702, the mud liquid generates a swirling flow between the pushing unit 3 and the wellbore wall, dispersing the impact force of the mud liquid directly on the pushing arm 16;

[0051] When it is necessary to adjust the use angle of the drill bit 4, the main hydraulic system inside the hydraulic unit 2 will quickly transport hydraulic oil into the pushing chute 5 through the first through hole 6. When the hydraulic oil passes through the mounting block 801, the pressure of the hydraulic oil will quickly be greater than the opening value of the elastic valve plate 805 on one side. At this time, the pressure of the hydraulic oil will drive the first plug plate 10, the guide rod 803 on one side, the sliding plate 804 and the connecting rod 806 to move through the first round hole 12, so that the connecting rod 806 drives the connecting seat 807 to move in the direction of the third piston 15. At this time, the external controller opens the switching valve on the first connecting pipe 815. The acting force of the first spring 817 will drive the second piston 818 to transport the liquid on one side inside the energy storage tank 816 to the inside of the first cavity through the first connecting pipe 815, and transport it to the inside of the connecting box 809 through the connected second through hole 813 and third through hole 814. At this time, the first piston 810 will assist in driving the round rod 811, the third piston 15 and the pushing arm 16 to move outward from the pushing unit 3 and contact the inner wall of the wellbore;

[0052] After the pushing arm 16 comes into contact with the wellbore wall, the main hydraulic system inside the hydraulic unit 2 stops working, and the elastic protective layer 808 causes the connecting seat 807 to reset. When it is necessary to retract the pushing arm 16, the main hydraulic system inside the hydraulic unit 2 recovers the hydraulic oil inside the pushing chute 5 through the first through hole 6. At this time, the elastic valve plate 805 on the other side opens, and the connecting seat 807 moves away from the third piston 15, so that the second through hole 813 and the third through hole 814 on the other side are connected. Then, the liquid inside the energy storage tank 816 is transported to the other side inside the connecting box 809, so that the first piston 810 drives the round rod 811, the third piston 15 and the pushing arm 16 to retract. At this time, the first piston 810 transports the liquid on one side inside the connecting box 809 to the inner cavity 901 opened inside the round rod 811 through the one-way conveying pipeline. Then, it is sprayed into the pushing chute 5 through the fourth cavity communicated with the inner cavity 901 and a plurality of one-way nozzles 902 to clean the cuttings adhered inside the pushing chute 5, which is convenient to use.

[0053] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A push-type guiding device for drilling, comprising a pushing unit (3), characterized in that: A plurality of flow guiding components (7) are circumferentially arrayed on the outer peripheral side of the pushing unit (3). Inside the pushing unit (3), a plurality of pushing chutes (5), first through holes (6) and two first cavities are circumferentially arrayed. Inside the pushing chutes (5), a third piston (15) and a pushing arm (16) are respectively arranged. Inside the third piston (15), an auxiliary cleaning component (9) for cleaning the pushing chutes (5) is arranged. On the side of the third piston (15) away from the pushing arm (16), an auxiliary pushing component (8) is arranged. The auxiliary pushing component (8) includes a mounting block (801). Inside the mounting block (801), a connecting seat (807) is slidably connected through a second cavity opened therein. Both sides of the connecting seat (807) extend to the outside of the mounting block (801) and are fixedly connected with partition plates (812). Second through holes (813) are opened on both sides inside the partition plates (812). On the other side of the partition plates (812), a connecting box (809) is arranged. Inside the connecting box (809), a round rod (811) is slidably connected. One side of the round rod (811) is connected to the third piston (15). Third through holes (814) are communicated with both sides inside the connecting box (809). On one side of the connecting box (809), an energy storage box (816) is arranged. The thrust of the round rod (811) on the pushing arm (16) is adjusted through the communication state of the second through holes (813) and the third through holes (814). On one side inside the pushing unit (3), a third cavity is opened. The energy storage box (816) is arranged inside the third cavity, and the energy storage box (816) is communicated with the first cavity through a first connecting pipe (815). A switch valve, a flow valve, a pressure valve and a one-way valve are arranged on the first connecting pipe (815). On one side inside the energy storage box (816), a first spring (817) is fixedly connected. On the other side of the first spring (817), a second piston (818) is fixedly connected. The second piston (818) is slidably sealed inside the energy storage box (816). On the side of the second piston (818) away from the first spring (817), a second connecting pipe (819) is arranged. One end of the second connecting pipe (819) is communicated with the energy storage box (816). The other end of the second connecting pipe (819) is communicated with a liquid sac (820). The bottom of the liquid sac (820) is fixedly connected with a cross plate (821). A convex block (822) is arranged at the bottom of the cross plate (821). The flow guiding component (7) includes a flow guiding groove, which is composed of a straight guiding groove (701) and a spiral guiding groove (702). The straight guiding groove (701) is communicated with the spiral guiding groove (702), and the straight guiding groove (701) is arranged on the side opposite to the drill bit (4). A turbine (703) is arranged inside the straight guiding groove (701). A rotating shaft (704) is fixedly connected inside the turbine (703). The rotating shaft (704) is rotatably connected inside the pushing unit (3). The side of the rotating shaft (704) away from the turbine (703) extends to the third cavity and is fixedly connected with the convex block (822).

2. The push - type guiding device for drilling according to claim 1, characterized in that: Both sides of the connection seat (807) are fixedly connected with elastic protective layers (808), the other side of the elastic protective layers (808) is fixedly connected with the inner wall of the mounting block (801), the connection seat (807) is slidably connected inside the first cavity, and the side of the connection box (809) away from the partition plate (812) is fixedly connected with the inner wall of the pushing unit (3).

3. The push - type guiding device for drilling according to claim 2, wherein: The hydraulic unit (2), the corrector and the communication unit (1) are sequentially arranged on the top of the pushing unit (3), the drill bit (4) is arranged at the bottom of the pushing unit (3), mandrels are arranged inside the hydraulic unit (2), the corrector and the communication unit (1), and the channels inside the mandrels are communicated with the drill bit (4). The first through hole (6) is communicated with the pushing chute (5), and two first cavities are symmetrically arranged on both sides of the first through hole (6). The third piston (15) is slidably sealed inside the pushing chute (5), and one side of the third piston (15) is fixedly connected with the pushing arm (16).

4. The push-type guiding device for drilling according to claim 3, characterized in that: One side of the liquid sac (820) is communicated with a liquid inlet pipe, and the other end of the liquid inlet pipe is communicated with the channel inside the mandrel. Third springs are arranged on both sides of the liquid sac (820), and both sides of the third springs are fixedly connected with the cross plate (821) and the inner wall of the pushing unit (3) respectively. The third through hole (814) is arranged as a one-way through hole.

5. The push - type guiding device for drilling according to claim 1, wherein: Both sides inside the mounting block (801) are fixedly connected with mounting cylinders (802), guide rods (803) are slidably connected inside the mounting cylinders (802), one end of each guide rod (803) is fixedly connected with a sliding plate (804), the sliding plates (804) are slidably connected inside the mounting cylinders (802), one end of each guide rod (803) is fixedly connected with a sliding plate (804), a connecting rod (806) is fixedly connected to the side of each sliding plate (804) away from the guide rod (803), the other ends of the connecting rods (806) extend outside the mounting cylinders (802) and are fixedly connected with the connection seat (807), the sliding plates (804) and the connecting rods (806) are both slidably connected inside the mounting cylinders (802), and elastic valve sheets (805) are arranged on the outer peripheral sides of the guide rods (803), and both sides of the elastic valve sheets (805) are fixedly connected with the sliding plates (804) and the inner walls of the mounting cylinders (802) respectively.

6. The push - type guiding device for drilling according to claim 1, wherein: A first piston (810) is slidably sealed inside the connection box (809), one side of the first piston (810) is fixedly connected with a round rod (811), and the round rod (811) is slidably sealed inside the connection box (809).

7. The push - type guiding device for drilling according to claim 5, characterized in that: On both sides of the mounting block (801), a first baffle plate (10) and a second baffle plate (11) are respectively arranged. On the opposite sides of the first baffle plate (10) and the second baffle plate (11), one end of a guide rod (803) is fixedly connected. On both sides of the first baffle plate (10), first round holes (12) are arranged. On both sides of the second baffle plate (11), second round holes (13) are arranged. The first baffle plate (10) and the second baffle plate (11) are arranged in a cross shape. The first round holes (12) and the second round holes (13) are arranged in a cross shape. On the side of the third piston (15) away from the pushing arm (16), a second spring (14) is fixedly connected. On the other side of the second spring (14), it is fixedly connected to the inner wall of the pushing unit (3). The mounting block (801) is arranged inside the first through hole (6), and the outer peripheral side of the mounting block (801) is fixedly connected to the inner wall of the pushing unit (3).

8. The push-type guiding device for drilling according to claim 6, characterized in that: The auxiliary cleaning assembly (9) includes an inner cavity (901). The inner cavity (901) is arranged inside the round rod (811). On one side of the inner cavity (901), two one-way conveying pipes are communicated. Both one-way conveying pipes are arranged inside the round rod (811), and one one-way conveying pipe is arranged on one side of the first piston (810). On the side of the inner cavity (901) away from the one-way conveying pipes, it is communicated with a plurality of one-way spray nozzles (902) through a fourth cavity. The fourth cavity is arranged inside the third piston (15). The one-way spray nozzles (902) are arranged on the side opposite to the pushing arm (16).

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