Turbodrill and drilling system having the same

Abstract

The utility model relates to the technical field of downhole tool for oil and gas drilling, disclose turbine drilling tool and have its drilling system, turbine drilling tool includes: casing, is the tubular structure, main shaft, is set in the casing, main shaft is provided with the department of intruding and extension, the department of intruding inserts the casing, and the extension is located the outside of casing, and the extension is provided with the connecting end suitable for connecting with the drill bit, locking sleeve, sleeve sets up on the extension, and has with the fixed locking state of extension, locking sleeve is held for installing equipment. Solve the axial distance between the upper end surface of male taper thread of turbine drilling tool output main shaft and the lower end surface of turbine drilling tool casing in prior art, cannot provide enough axial space for the fixed jaw holding fixed of hydraulic tong.

Description

Technical Field

[0001] This utility model relates to the field of downhole tools for oil and gas drilling, specifically to a turbine drill and a drilling system having the same. Background Technology

[0002] In the drilling process of oil and gas exploration and development, turbine drill bits are usually used as wellbore trajectory control tools for rapid drilling of ultra-deep wells under high temperature and high pressure. Turbine drill bits need to have a high directional drilling capability, which requires that the distance between the bend point on the turbine drill bit housing and the output spindle end face be minimized.

[0003] In existing turbine drill bit connections, hydraulic drilling tongs are typically used for drill bit unplugging and re-plugging operations. During operation, the movable jaws of the hydraulic tongs grip the outer cylindrical surface of the female tapered threaded connector of the drill bit, while the fixed jaws hold and fix the turbine drill bit output spindle. However, the axial distance between the upper end face of the male tapered thread of the turbine drill bit output spindle and the lower end face of the turbine drill bit housing is relatively small, failing to provide sufficient axial space for the fixed jaws of the hydraulic tongs to hold and fix it in place. Utility Model Content

[0004] In view of this, the present invention provides a turbine drill bit to solve the problem that the axial distance between the upper end face of the male tapered thread of the output spindle of the existing turbine drill bit and the lower end face of the turbine drill bit housing is too small, and cannot provide sufficient axial space for the fixed jaws of the hydraulic tongs to clamp and fix it.

[0005] In a first aspect, this utility model provides a turbine drill bit, comprising: a housing in the form of a cylindrical structure; a spindle movably disposed within the housing; the spindle having an insertion portion and an extension portion, the insertion portion being inserted into the housing, the extension portion being located outside the housing, and the extension portion having a connecting end suitable for connection with a drill bit; a locking sleeve fitted onto the extension portion and having a locked state for fixing with the extension portion; the locking sleeve being clamped by an installation device.

[0006] Beneficial effects: The locking sleeve is mounted on the extension of the spindle, allowing it to be fixed in place and locked. Since the locking sleeve connects to the spindle, no circumferential displacement occurs between them. This enables clamping and securing of the spindle, facilitating the installation and removal of the drill bit from the spindle. Therefore, the locking sleeve provides space for clamping the installed equipment, solving the problem of insufficient axial space between the upper end face of the male tapered thread of the spindle and the lower end face of the turbine drill housing, which prevents the hydraulic tongs from providing enough clamping space for secure clamping.

[0007] When performing uncoupling operations on the drill bit, the locking sleeve fixes the extension of the spindle to achieve a locked state. The mounting equipment is clamped on the locking sleeve to fix the spindle, allowing for the addition or removal of the coupling.

[0008] In an alternative embodiment, the locking sleeve also has a released state that is disengaged from the extension.

[0009] Beneficial effects: The locking sleeve includes a loose state that is disconnected from the extension and a locked state that is fixed to the connecting part. The state of the locking sleeve and the extension can be controlled according to different operation types. It can fix the spindle during the upper and lower buckle operation and will not affect other operations on the spindle after the upper and lower buckle operation is completed.

[0010] In one optional embodiment, the locking sleeve has a pin hole and / or pin at one end away from the housing, and the extension has a pin hole and / or pin. The pin hole and / or pin on the locking sleeve engages with the pin hole and / or pin on the extension. When the pin is inserted into the pin hole, the locking sleeve is in the locked state. When the pin is disengaged from the pin hole, the locking sleeve is in the released state.

[0011] Beneficial effects: Matching pin holes and / or pins are provided at the end of the locking sleeve away from the housing and the extension. The locking sleeve and the spindle are fixed by the pin and pin hole structure. The structure is simple, easy to process, low in cost, and easy to install and disassemble.

[0012] In one alternative embodiment, the extension is provided with a protrusion on its outer circumference, and the projection of the protrusion along the axial direction of the main shaft at least partially coincides with the locking sleeve.

[0013] Beneficial effects: The projection of the protrusion along the axial direction of the main shaft at least partially coincides with the locking sleeve. The protrusion acts as a limit for the locking sleeve, preventing the locking sleeve from blocking the connection end of the main shaft or from falling off the main shaft.

[0014] In one optional embodiment, the protrusion is provided with a corresponding pin hole and / or pin.

[0015] Beneficial effects: By setting the pin holes and / or pins on the protrusion, it is easier to insert and release the pin holes and / or pins on the spindle and the locking sleeve, making it easier to fix and release the spindle and the locking sleeve, and simplifying the installation.

[0016] In one alternative embodiment, pin holes and / or pins are evenly distributed circumferentially on the protrusion.

[0017] Beneficial effects: By placing the pin hole and / or pin in the circumference of the protrusion, the force on the spindle and locking sleeve can be more even when the drill bit is untangled, making the connection between the spindle and the locking sleeve more secure and stable.

[0018] In one optional embodiment, the locking sleeve is integrally formed with the pin hole and / or pin disposed on the locking sleeve, and the spindle is integrally formed with the pin hole and / or pin disposed on the spindle.

[0019] Beneficial effects: The locking sleeve and the pin hole and / or pin set on the locking sleeve are integrally formed, and the spindle and the pin hole and / or pin set on the spindle are integrally formed, resulting in greater structural strength and rigidity, stronger reliability, and less susceptibility to damage. In addition, it can reduce assembly steps and installation costs.

[0020] In one optional embodiment, the locking sleeve is provided with an internal thread, and the housing is provided with a matching external thread. The locking sleeve is threadedly connected to the housing, which facilitates the connection and separation of the locking sleeve and the housing.

[0021] Beneficial effects: By setting corresponding threaded structures on the locking sleeve and the housing, the locking sleeve and the housing can be connected and separated. When the unpinning operation is performed on the drill bit, the locking sleeve and the housing are separated. When the unpinning operation on the drill bit is finished, the locking sleeve and the housing are connected, which can fix the locking sleeve. During non-operation time, it is not necessary to remove the locking sleeve from the turbine drill bit, saving installation and disassembly steps and making it more convenient.

[0022] Secondly, this utility model also provides a drilling system, including: a drill bit, a turbine drill bit, an installation device, and equipped with movable jaws and fixed jaws.

[0023] Beneficial effects: Since the drilling system includes a turbine drill bit, it has the same effects as a turbine drill bit, which will not be elaborated here.

[0024] In one alternative implementation, the installation device is a hydraulic clamp.

[0025] Beneficial effects: Hydraulic clamps can precisely control torque, avoiding problems such as unstable installation or difficulty in unsnatching due to excessive or insufficient torque. In addition, they have a faster installation speed, which can save installation time. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of a turbine drill bit according to an embodiment of the present invention; Figure 2 for Figure 1 A magnified view of part A of the turbine drill string shown; Figure 3 for Figure 1 A magnified view of part B of the turbine drill bit shown; Figure 4 for Figure 1 A schematic cross-sectional view of the turbine drill bit at the CC position.

[0028] Explanation of reference numerals in the attached figures: 1. Spindle; 11. Protruding structure; 12. Pin; 2. Housing; 3. Locking sleeve; 31. Pin hole. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] The following is combined Figures 1 to 4 The following describes embodiments of the present invention.

[0031] According to an embodiment of the present invention, a turbine drill bit is provided, which includes a housing 2, a spindle 1, and a locking sleeve 3.

[0032] Specifically, in this embodiment, the housing 2 has a cylindrical structure and is hollow inside, allowing the spindle 1 to be inserted into the housing 2. Furthermore, the spindle 1 is movably disposed within the housing 2, and during actual operation, the spindle 1 rotates relative to the housing 2. Further, the spindle 1 is provided with an insertion part and an extension part; the insertion part is inserted into the housing 2, and the extension part is located outside the housing 2, with a connecting end suitable for connection with a drill bit. A locking sleeve 3 is fitted onto the extension part and has a locked state for fixing to the extension part; the locking sleeve 3 is used for clamping by the installation equipment.

[0033] Specifically, the locking sleeve 3 and the extension are fixed by the pin 12 and the pin hole 31. Alternatively, the locking sleeve 3 and the extension can be fixed by bolts and nuts, studs, etc. Of course, they can also be fixed by snap-fit ​​or clip-on methods. This embodiment is merely an example of how the locking sleeve 3 and the extension are fixed, but it is not intended to limit the method. Those skilled in the art can modify it according to actual circumstances, as long as the same technical effect is achieved.

[0034] In this embodiment, the locking sleeve 3 is disposed on the extension of the spindle 1. The locking sleeve 3 can be fixed to the extension of the spindle 1 to achieve a locked state. The locking sleeve 3 is connected to the spindle 1, and no circumferential displacement occurs between the spindle 1 and the locking sleeve 3, which provides space for clamping the installation equipment. Furthermore, the locking sleeve 3 can be used to clamp and fix the spindle 1, thereby realizing the installation and disassembly of the drill bit and the spindle 1.

[0035] During drill bit uncoupling operations, the locking sleeve 3 secures the extension of the spindle 1, achieving a locked state. The mounting equipment is clamped onto the locking sleeve, thus fixing the spindle 1 for uncoupling or recoupling. Because the locking sleeve 3 has a relatively large overall structure, it is large enough to clamp the mounting equipment, thereby solving the problem in existing technologies where the axial distance between the upper end face of the male tapered thread of the spindle and the lower end face of the turbine drill housing is too small, failing to provide sufficient axial space for the hydraulic tongs to clamp and secure the drill bit.

[0036] like Figure 1 As shown, in one embodiment, the locking sleeve 3 also has a loosened state that is disengaged from the extension.

[0037] In this embodiment, the locking sleeve 3 includes a loosened state that is disconnected from the extension and a locked state that is fixed to the connecting part. The state of the locking sleeve 3 and the extension can be controlled according to different operation types. When performing the upper and lower buckle operation, the main shaft 1 is fixed. After the upper and lower buckle operation is completed, it will not affect other operations on the main shaft 1.

[0038] like Figure 1 As shown, in one embodiment, the locking sleeve 3 has a pin hole 31 and a pin 12 at the end away from the housing 2, and the extension also has a pin hole 31 and a pin 12. The pin hole 31 and pin 12 on the locking sleeve 3 engage with the pin hole 31 and pin 12 on the extension. When the pin 12 is inserted into the pin hole 31, the locking sleeve 3 is in a locked state. When the pin 12 is disengaged from the pin hole 31, the locking sleeve 3 is in a released state.

[0039] Specifically, the arrangement of the pin hole 31 and the pin 12 includes the following three implementation methods: Specifically, in the first embodiment, the locking sleeve 3 is provided with a pin hole 31 at the end away from the housing 2, and a pin 12 is provided on the extension portion, with the pin hole 31 on the locking sleeve 3 cooperating with the pin 12 on the extension portion.

[0040] Specifically, in the second embodiment, a pin 12 is provided at the end of the locking sleeve 3 away from the housing 2, and a pin hole 31 is provided on the extension portion, with the pin 12 on the locking sleeve 3 cooperating with the pin hole 31 on the extension portion.

[0041] Specifically, in the third embodiment, the locking sleeve 3 is provided with a pin hole 31 and a pin 12 at the end away from the housing 2, and the extension is provided with a pin hole 31 and a pin 12. The pin hole 31 and the pin 12 on the locking sleeve 3 cooperate with the pin hole 31 and the pin 12 on the extension.

[0042] Specifically, the number of pin holes 31 on the locking sleeve 3 is not less than the number of pins 12 on the extension, and the number of pin holes 31 on the extension is not less than the number of pins 12 on the locking sleeve 3.

[0043] In this embodiment, a matching pin hole 31 and a pin 12 are provided at the end of the locking sleeve 3 away from the housing 2 and at its extension. The locking sleeve 3 and the main shaft 1 are fixed by the pin 12 and the pin hole 31. The structure is simple, easy to process, low in cost, and easy to install and disassemble.

[0044] like Figure 1 As shown, in one embodiment, the extension is provided with a protrusion in the outer circumference. The protrusion has an annular structure, and the projection of the protrusion along the axial direction of the main shaft 1 at least partially overlaps with the locking sleeve 3.

[0045] In a preferred embodiment, the protrusion is provided near the connecting end of the extension.

[0046] In this embodiment, the projection of the protrusion along the axial direction of the main shaft 1 at least partially coincides with the locking sleeve 3. The protrusion plays a limiting role for the locking sleeve 3, preventing the locking sleeve 3 from blocking the connection end of the main shaft 1 or from falling off the main shaft 1.

[0047] like Figures 1 to 2 As shown, in one embodiment, the protrusion is provided with a corresponding pin hole 31 and / or pin 12.

[0048] Specifically, the arrangement of the pin hole 31 and the pin 12 includes the following three implementation methods: Specifically, in the first embodiment, a pin hole 31 is provided on the protrusion.

[0049] Specifically, in the second embodiment, a pin 12 is provided on the protrusion.

[0050] Specifically, in the third embodiment, the protrusion is provided with a corresponding pin hole 31 and a pin 12.

[0051] In the following description, only the example of a pin 12 on the spindle 1 and a pin hole 31 on the locking sleeve 3 is given.

[0052] In this embodiment, the pin 12 is set on the protrusion to facilitate insertion and disengagement from the pin hole 31 on the locking sleeve 3, thereby making the overall installation process of the equipment simpler.

[0053] like Figure 1 and Figure 4 As shown, in one embodiment, pin holes 31 and / or pins 12 are evenly distributed circumferentially on the protrusion.

[0054] In this embodiment, the pin 12 is set in the circumference of the protrusion. When the drill bit is untangled, the force on the spindle 1 and the locking sleeve 3 can be more even, and the connection between the spindle 1 and the locking sleeve 3 can be more firm and stable.

[0055] like Figure 1 As shown, in one embodiment, the locking sleeve 3 is integrally formed with the pin hole 31 and the pin 12 provided on the locking sleeve 3, and the spindle 1 is integrally formed with the pin hole 31 and the pin 12 provided on the spindle 1.

[0056] In this embodiment, when the locking sleeve 3 is provided with pin hole 31 and pin 12, the locking sleeve 3 can also be integrally formed with the pin hole 31 and pin 12 provided on the locking sleeve 3. The spindle 1 is integrally formed with the pin hole 31 and pin 12 provided on the spindle 1, which has greater structural strength and rigidity, stronger reliability, and is not easily damaged. In addition, it can reduce assembly steps and installation costs.

[0057] like Figure 1 and Figure 3 As shown, in one embodiment, the locking sleeve 3 is provided with an internal thread, and the housing 2 is provided with a matching external thread. The locking sleeve 3 and the housing 2 are threadedly connected to each other, so as to facilitate the connection and separation of the locking sleeve 3 and the housing 2.

[0058] As an alternative implementation, the locking sleeve 3 may be provided with an external thread, and the housing 2 may be provided with a matching internal thread. The locking sleeve 3 and the housing 2 are threadedly connected, which facilitates the connection and separation of the locking sleeve 3 and the housing 2.

[0059] In this embodiment, corresponding threaded structures are provided on the locking sleeve 3 and the housing 2 to realize the connection and separation between the locking sleeve 3 and the housing 2. When the unpinning operation is performed on the drill bit, the locking sleeve 3 and the housing 2 are separated. When the unpinning operation on the drill bit is finished, the locking sleeve 3 and the housing 2 are connected, which can fix the locking sleeve 3. During non-operation time, it is not necessary to remove the locking sleeve 3 from the turbine drill, saving installation and disassembly steps and making it more convenient.

[0060] According to an embodiment of the present invention, another aspect provides a drilling system, including: a drill bit, a turbine drill bit, an installation device, and a set of movable jaws and fixed jaws.

[0061] In one embodiment, the installation device is a hydraulic clamp.

[0062] In this embodiment, the hydraulic clamp can precisely control the torque, avoiding problems such as unstable installation or difficulty in unsnatching due to excessive or insufficient torque. In addition, it has a fast speed, which can save installation time.

[0063] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A turbodrill characterized by, The turbine drill bit includes: The shell (2) has a cylindrical structure; A spindle (1) is movably disposed in the housing (2); the spindle (1) is provided with an insertion part and an extension part, the insertion part is inserted into the housing (2), the extension part is located outside the housing (2), and the extension part is provided with a connection end suitable for connection with a drill bit; A locking sleeve (3) is fitted onto the extension and has a locked state that fixes it to the extension; the locking sleeve (3) is used for clamping by the installation equipment.

2. The turbodrill of claim 1 wherein, The locking sleeve (3) also has a loosened state that is disconnected from the extension.

3. The turbodrill of claim 2 wherein, The locking sleeve (3) is provided with a pin hole (31) and / or a pin (12) at one end away from the housing (2), and the extension is provided with a pin hole (31) and / or a pin (12). The pin hole (31) and / or the pin (12) on the locking sleeve (3) cooperate with the pin hole (31) and / or the pin (12) on the extension. When the pin (12) is inserted into the pin hole (31), the locking sleeve (3) is in the locked state; When the pin (12) is disengaged from the pin hole (31), the locking sleeve (3) is in the loosened state.

4. The turbodrill of claim 3 wherein, The extension is provided with a protrusion in the outer circumference, and the projection of the protrusion along the axial direction of the main shaft (1) at least partially coincides with the locking sleeve (3).

5. The turbodrill of claim 4 wherein, The protrusion is provided with a corresponding pin hole (31) and / or pin (12).

6. The turbodrill of claim 5 wherein, The pin holes (31) and / or pins (12) are evenly distributed around the circumference of the protrusion.

7. The turbodrill of any of claims 3 to 6, wherein, The locking sleeve (3) is integrally formed with the pin hole (31) and / or pin (12) provided on the locking sleeve (3), and the spindle (1) is integrally formed with the pin hole (31) and / or pin (12) provided on the spindle (1).

8. The turbodrill of any of claims 1 to 6, wherein, The locking sleeve (3) is provided with an internal thread, and the housing (2) is provided with a matching external thread. The locking sleeve (3) is threadedly connected to the housing (2) to facilitate the connection and separation of the locking sleeve (3) and the housing (2).

9. A drilling system, characterized by include: drill, The turbine drill string as described in any one of claims 1 to 8, The installation equipment is equipped with both movable and fixed jaws.

10. A drilling system according to claim 9, characterised in that, The installation equipment is a hydraulic clamp.

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