Turbodrill for petroleum drilling

Abstract

The utility model relates to the technical field of turbine drilling tools, and discloses a turbine drilling tool for petroleum drilling, which comprises an outer cylinder, a plurality of turbine stators are fixedly connected to the inner wall of the outer cylinder, turbine rotors are arranged below the turbine stators, sliding mechanisms are arranged between the turbine stators and the turbine rotors, and the turbine stators are fixedly connected with the outer cylinder. An injection mechanism is arranged on the outer cylinder; the sliding mechanism comprises first fixing rings fixedly connected to the top end of the turbine rotor, and the top ends of the multiple first fixing rings are fixedly connected with second fixing rings. By means of the structure in the sliding mechanism, friction between the turbine stator and the turbine rotor can be reduced during rotation, so that the quality of the turbine stator and the turbine rotor can be guaranteed, the service life is prolonged, and the problem that a traditional turbine drill can generate more friction in the using process, and the service life of the turbine drill is prolonged is solved. Therefore, the turbine rotor and the turbine stator are damaged, and the service life is influenced.

Description

Technical Field

[0001] This utility model relates to the field of turbine drilling technology, specifically a turbine drilling tool for oil drilling. Background Technology

[0002] A turbine drill is a bottom hole power machine that converts the kinetic energy of flushing fluid into mechanical energy. Turbine drilling is an advanced drilling method that allows core drilling at the bottom of the hole. Compared with traditional screw drills, it improves the working conditions of the drill rod and reduces power consumption, so it is widely used in mining drilling projects.

[0003] Chinese patent provides a turbine assembly for a turbine drill bit, publication number CN217206704U, which includes a shaft, a turbine stator mounted on the outside of the shaft, a turbine rotor mounted on the bottom of the turbine stator, a wear-resistant bearing on the top of the turbine rotor, a protective sleeve on the bottom of the turbine stator, and a connecting key mounted inside the turbine rotor.

[0004] The aforementioned turbine drill bit is driven by the turbine rotor through the inner sleeve of the bearing and rotates together with it. The bearing rotor is driven by the inner sleeve of the bearing and begins to rotate on the inner wall of the outer sleeve of the bearing. At the same time, since the outer sleeve of the bearing is in contact with the inner wall of the turbine stator, the outer sleeve of the bearing does not rotate with the bearing rotor, thus avoiding direct friction between the turbine rotor and the turbine stator. This achieves the technical effect of reducing the loss caused by friction. However, during use, a lot of friction will still be generated, which will damage the turbine rotor and turbine stator and affect the service life. Utility Model Content

[0005] The purpose of this invention is to provide a turbine drill bit for oil drilling, in order to solve the problem that existing turbine drill bits still generate a lot of friction during use, which can damage the turbine rotor and turbine stator and affect their service life.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a turbine drill bit for oil drilling, comprising an outer cylinder, wherein multiple turbine stators are fixedly connected to the inner wall of the outer cylinder, and a turbine rotor is provided below each of the multiple turbine stators, and a sliding mechanism is provided between the multiple sets of turbine stators and turbine rotors, and an injection mechanism is provided on the outer cylinder;

[0007] The sliding mechanism includes a first fixing ring fixedly connected to the top of the turbine rotor, a second fixing ring fixedly connected to the top of each of the first fixing rings, a plurality of first ball grooves formed on the inner and outer walls of the plurality of first fixing rings, a first ball provided on the inner wall of each of the plurality of first ball grooves, a plurality of second ball grooves formed at the bottom of the plurality of second fixing rings corresponding to the two sides of the first fixing rings, a second ball provided on the inner wall of each of the plurality of second ball grooves, and a plurality of third ball grooves formed at the top of the plurality of second fixing rings, a third ball provided on the inner wall of each of the plurality of third ball grooves.

[0008] Preferably, annular grooves are formed at the bottom ends of multiple turbine stators, and multiple sets of first fixing rings and second fixing rings are respectively arranged in the annular grooves with gaps.

[0009] Preferably, the plurality of first rolling balls, the plurality of second rolling balls, and the plurality of third rolling balls are all in contact with the annular groove.

[0010] Preferably, the injection mechanism includes a circular groove formed at the top of the outer cylinder, and the number of the circular grooves is set to a plurality of, each of the circular grooves being provided with a plurality of injection ports, which are aligned with the blades on the turbine rotor.

[0011] Preferably, pipes are fixedly connected to the outer side of the circular groove at the top of the outer cylinder.

[0012] Preferably, the plurality of turbine stators and the plurality of turbine rotors are arranged alternately in sequence, with the blades in opposite directions, and the inner walls of the plurality of turbine rotors are fixedly connected with rotating shafts.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1) This turbine drill bit for oil drilling, through the cooperation of various structures in the sliding mechanism, can reduce the friction between the turbine stator and turbine rotor during rotation, thereby ensuring the quality of the turbine stator and turbine rotor and extending their service life.

[0015] 2) This turbine drill bit for oil drilling can provide power to the turbine rotor through the cooperation of various structures in the jetting mechanism, so that the turbine rotor can maintain stable rotation and thus carry out effective drilling. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a turbine drill bit for oil drilling according to the present invention;

[0017] Figure 2 This is a cross-sectional view of the outer cylinder of a turbine drill string for oil drilling according to the present invention;

[0018] Figure 3This is a cross-sectional view of the turbine stator of a turbine drill string for oil drilling according to the present invention;

[0019] Figure 4 This is a partial structural exploded view of a turbine drill string for oil drilling according to the present invention;

[0020] Figure 5 This is a top view of the disassembled structure of a turbine drill string for oil drilling according to the present invention;

[0021] Figure 6 This is a top view of the disassembled structure of a turbine drill bit for oil drilling according to the present invention.

[0022] In the diagram: 1. Outer cylinder; 2. Turbine stator; 3. Turbine rotor; 4. Sliding mechanism; 401. First fixed ring; 402. Second fixed ring; 403. First ball groove; 404. First rolling ball; 405. Second ball groove; 406. Second rolling ball; 407. Third ball groove; 408. Third rolling ball; 409. Annular groove; 5. Injection mechanism; 501. Circular groove; 502. Injection nozzle; 503. Pipe; 6. Rotating shaft. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1

[0025] Combination Figures 1-6 A turbine drill bit for oil drilling includes an outer cylinder 1, a plurality of turbine stators 2 fixedly connected to the inner wall of the outer cylinder 1, a turbine rotor 3 disposed below each of the plurality of turbine stators 2, a sliding mechanism 4 disposed between the plurality of turbine stators 2 and the turbine rotor 3, an injection mechanism 5 disposed on the outer cylinder 1, the plurality of turbine stators 2 and the plurality of turbine rotors 3 are arranged alternately in sequence with opposite blade directions, and a rotating shaft 6 fixedly connected to the inner wall of the plurality of turbine rotors 3.

[0026] See Figures 3-6Furthermore, the sliding mechanism 4 includes a first fixing ring 401 fixedly connected to the top of the turbine rotor 3, a second fixing ring 402 fixedly connected to the top of each of the first fixing rings 401, a plurality of first ball grooves 403 formed on the inner and outer walls of the plurality of first fixing rings 401, a first ball 404 formed on the inner wall of each of the plurality of first ball grooves 403, a plurality of second ball grooves 405 formed at the bottom of each of the plurality of second fixing rings 402 corresponding to the two sides of the first fixing rings 401, a second ball 406 formed on the inner wall of each of the plurality of second ball grooves 405, a plurality of third ball grooves 407 formed at the top of each of the plurality of second fixing rings 402, a third ball 408 formed on the inner wall of each of the plurality of third ball grooves 407, and an annular groove 409 formed at the bottom of each of the plurality of turbine stators 2. The plurality of first fixing rings 401 and second fixing rings 402 are respectively arranged in the annular groove 409 with gaps, and the plurality of first ball 404, the plurality of second ball 406 and the plurality of third ball 408 are in contact with the annular groove 409.

[0027] Specifically, the first fixed ring 401 and the second fixed ring 402 are placed in the annular groove 409 and can rotate. The first ball 404 rolls freely in the first ball groove 403, the second ball 406 rolls freely in the second ball groove 405, and the third ball 408 rolls freely in the third ball groove 407. Therefore, friction can be reduced during use, thereby reducing friction between the turbine stator 2 and the turbine rotor 3 and extending service life.

[0028] Example 2

[0029] See Figure 1 and Figure 2 Furthermore, based on Embodiment 1, the injection mechanism 5 includes a circular groove 501 opened at the top of the outer cylinder 1. The number of circular grooves 501 is set to multiple, and multiple injection ports 502 are passed through the multiple circular grooves 501. The multiple injection ports 502 are aligned with the blades on the turbine rotor 3. Pipes 503 are fixedly connected to the outer side of the top of the outer cylinder 1 corresponding to the circular grooves 501.

[0030] Specifically, drilling fluid can be flowed into the circular groove 501 through the pipe 503 and then sprayed out from the injection port 502, thereby spraying the turbine rotor 3 to provide it with rotational force, ensuring the rotational speed of the turbine rotor 3, and thus effectively carrying out drilling.

[0031] In actual operation, the drilling fluid can first pass through the upper turbine stator 2 and change its flow direction through the blades on the upper turbine stator 2, so that it can act on the blades on the lower turbine rotor 3, thereby causing the turbine rotor 3 to rotate and drive the shaft 6 to rotate for drilling operation. During the rotation of the turbine rotor 3, the third ball 408 rolls in the third ball groove 407, the first ball 404 rolls in the first ball groove 403, and the second ball 406 rolls in the second ball groove 405. Therefore, friction during rotation can be reduced and service life can be extended.

[0032] Furthermore, drilling fluid can enter the circular groove 501 through the pipe 503 and then be ejected through the injection port 502, thereby providing power to the turbine rotor 3 and keeping the turbine rotor 3 rotating stably, thus enabling effective drilling.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A turbine drill string for oil drilling, comprising an outer cylinder (1), wherein a plurality of turbine stators (2) are fixedly connected to the inner wall of the outer cylinder (1), and a turbine rotor (3) is disposed below each of the plurality of turbine stators (2), characterized in that: A sliding mechanism (4) is provided between each of the multiple sets of turbine stators (2) and turbine rotors (3), and an injection mechanism (5) is provided on the outer cylinder (1); The sliding mechanism (4) includes a first fixing ring (401) fixedly connected to the top of the turbine rotor (3), a second fixing ring (402) fixedly connected to the top of each of the first fixing rings (401), a plurality of first ball grooves (403) being provided on the inner and outer sides of the plurality of first fixing rings (401), a first ball (404) being provided on the inner wall of the plurality of first ball grooves (403), a plurality of second ball grooves (405) being provided at the bottom of the plurality of second fixing rings (402) corresponding to the two sides of the first fixing rings (401), a second ball (406) being provided on the inner wall of the plurality of second ball grooves (405), a plurality of third ball grooves (407) being provided at the top of the plurality of second fixing rings (402), and a third ball (408) being provided on the inner wall of the plurality of third ball grooves (407).

2. The turbine drilling tool for oil drilling according to claim 1, characterized in that: The bottom ends of multiple turbine stators (2) are provided with annular grooves (409), and multiple sets of first fixing rings (401) and second fixing rings (402) are respectively arranged in the annular grooves (409) with gaps.

3. A turbine drilling tool for oil drilling according to claim 2, characterized in that: Multiple first rolling balls (404), multiple second rolling balls (406) and multiple third rolling balls (408) are in contact with the annular groove (409).

4. A turbine drilling tool for oil drilling according to claim 1, characterized in that: The injection mechanism (5) includes a circular groove (501) opened at the top of the outer cylinder (1). The number of circular grooves (501) is multiple, and multiple injection ports (502) are provided through each of the multiple circular grooves (501). The multiple injection ports (502) are aligned with the blades on the turbine rotor (3).

5. A turbine drilling tool for oil drilling according to claim 4, characterized in that: The outer cylinder (1) has pipes (503) fixedly connected to the outer side of the circular groove (501) at the top.

6. A turbine drilling tool for oil drilling according to claim 1, characterized in that: Multiple turbine stators (2) and multiple turbine rotors (3) are arranged alternately in sequence, with the blades facing opposite directions. A rotating shaft (6) is fixedly connected to the inner wall of the multiple turbine rotors (3).

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