An ultra-short radius screw drill for drilling operations

Abstract

The present invention discloses an ultra-short radius screw drill for drilling operations, comprising a directional measurement while drilling device, a screw drill body, and a connecting mechanism: the screw drill body is mounted below the directional measurement while drilling device, the connecting mechanism is disposed between the directional measurement while drilling device and the screw drill body, and the connecting mechanism comprises a first connecting sleeve. Compared with the prior art, the present device, through the arrangement of the connecting mechanism, can conveniently install and use the directional measurement while drilling device on screw drill bodies of different diameters by simply replacing a second connecting sleeve and a second threaded connecting pipe that match the screw drill body, through the mutual cooperation of multiple components in the connecting mechanism. This facilitates installation and disassembly of the directional measurement while drilling device and the screw drill body, thereby reducing the number of directional measurement while drilling devices, thereby reducing the site footprint and purchase costs, and effectively improving the convenience and practicality of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of oil production engineering equipment, in particular to an ultra-short radius screw drill tool for drilling operations. Background Art

[0002] Ultra-short radius horizontal drilling is a high-precision oil drilling technology in the world's oil industry today. At present, domestic ultra-short radius horizontal drilling technology has the characteristics of small curvature radius and precise penetration. Some screw drill tools will be equipped with a directional drilling measurement system to achieve the purpose of accurately controlling the drilling trajectory.

[0003] The existing screw drill tools equipped with a while drilling measurement device still have certain shortcomings: the while drilling measurement device is mounted on one end of the screw drill tool and the two are connected to each other by a threaded connection. However, a variety of screw drill tools with different diameters will be used at the drilling site to meet different drilling needs. There will be multiple screw drill tools on site, and each screw drill tool needs to be equipped with a while drilling measurement device that is compatible with it. Multiple screw drill tools and while drilling measurement devices will increase the floor space on site and increase the purchase cost of the while drilling measurement device, which is inconvenient to use. Therefore, it is necessary to design an ultra-short radius screw drill tool for drilling operations that is easy to use with the while drilling measurement device on screw drill tools of different diameters, so as to reduce the purchase cost of the while drilling measurement device and reduce the floor space on site. Summary of the Invention

[0004] In order to overcome the disadvantages of the prior art that each screw drill tool needs to be equipped with a corresponding measurement while drilling device, multiple screw drill tools and measurement while drilling devices will increase the on-site footprint and increase the purchase cost of the measurement while drilling devices, one of the purposes of the present invention is to provide an ultra-short radius screw drill tool for drilling operations.

[0005] One of the purposes of the present invention is achieved by adopting the following technical solution: an ultra-short radius screw drill tool for drilling operations, comprising a directional measurement while drilling device, a screw drill tool body and a connecting mechanism: the screw drill tool body is installed below the directional measurement while drilling device, the connecting mechanism is arranged between the directional measurement while drilling device and the screw drill tool body, the connecting mechanism comprises a connecting sleeve 1, the inner wall of the connecting sleeve 1 is fixedly connected to a threaded connecting pipe 1, the outer surface of the connecting sleeve 1 is movably connected to a connecting sleeve 2, the inner wall of the connecting sleeve 2 is fixedly connected to a threaded connecting pipe 2; the outer surface of the connecting sleeve 1 is symmetrically provided with grooves, the inner surface of the grooves The wall is fixedly connected to a spring, the other end of the spring is fixedly connected to a support plate, a through groove is formed on the side of the connecting sleeve second near the groove, a clamping plate is fixedly connected to the inner bottom wall of one side of the through groove, a clamping groove is formed on one side of the clamping plate, a supporting sleeve is fixedly connected to one side of the support plate, a rotating sleeve is rotatably connected to the outer surface of the supporting sleeve, a rotating plate is fixedly connected to the outer surface of the rotating sleeve, a clamping block is fixedly connected to one side of the rotating plate, a rotating rod is fixedly connected to one side of the rotating sleeve, a threaded through hole 1 is formed on the side wall of the supporting sleeve near the rotating rod, and a limit rod is threadedly connected to the inner wall of the threaded through hole 1. This facilitates the installation and use of the directional drilling device on screw drill bodies of different diameters, thereby reducing the number of directional drilling measurement devices, thereby reducing the purchase cost and floor space.

[0006] According to the ultra-short radius screw drill tool for drilling operations, one end of the limit rod is fixedly connected to a knob to facilitate rotation of the limit rod.

[0007] According to the ultra-short radius screw drill tool for drilling operations, a protective mechanism is provided on the upper surface of the second connecting sleeve. The protective mechanism includes mounting grooves symmetrically provided on the outer surface of the second connecting sleeve, a mounting block mounted on the inner wall of the mounting groove, a second threaded through hole provided on one side of the mounting block, a screw threadedly connected to the inner wall of the second threaded through hole, the screw being threadedly connected to the mounting groove, and a protective plate fixedly connected to the upper surface of the mounting block. This facilitates protection of the area between the first and second connecting sleeves to prevent debris and clods from affecting the use of the connecting mechanism.

[0008] According to the ultra-short radius screw drill tool for drilling operations, the connecting mechanism and the protective mechanism are both made of titanium alloy to achieve the purpose of bending.

[0009] According to the ultra-short radius screw drill tool for drilling operations, the protective plate is mounted on the outer surface of the first connecting sleeve and the upper surface of the second connecting sleeve, and the width of the protective plate matches the width between the outer surface of the first connecting sleeve and the second connecting sleeve, thereby facilitating sealing the gap between the first connecting sleeve and the second connecting sleeve.

[0010] According to the ultra-short-radius screw drill tool for drilling operations, the directional measurement-while-drilling device comprises a flexible housing (1), a cable-type drill pipe disposed within the flexible housing (1), two non-magnetic drill pipes (1 and 2) disposed on either side of the cable-type drill pipe, and a measurement probe disposed between the two. This facilitates monitoring of various parameters during drilling, achieving precise control of the drilling trajectory.

[0011] According to the ultra-short radius screw drill tool for drilling operations, the directional measurement while drilling device is connected to the connection mechanism through the thread groove 1 and the threaded connection pipe 1, which is convenient for installation and disassembly.

[0012] According to the ultra-short radius screw drill tool for drilling operations, the screw drill tool body comprises a second flexible housing, a bypass valve assembly, a motor assembly, a universal joint assembly, a transmission shaft assembly, and a drill bit. A second thread groove is formed on the inner wall of the second flexible housing near the second threaded connection pipe. The screw drill tool body is connected to the connection mechanism via the second thread groove and the second threaded connection pipe, facilitating connection and assembly.

[0013] According to the ultra-short radius screw drill for drilling operations, the central axes of the directional measurement while drilling device, the connecting mechanism, and the screw drill body are all aligned in a straight line, facilitating precise measurement and drilling operations.

[0014] According to the ultra-short radius screw drill for drilling operations, the directional measurement while drilling device, the screw drill body, the connecting mechanism, and the protective mechanism are assembled and detachably connected, which facilitates assembly and disassembly and replacement, and reduces maintenance costs.

[0015] The above scheme has the following beneficial effects:

[0016] 1. Through the setting of the connecting mechanism, compared with the existing technology, the present device can realize the convenient installation and use of the directional measurement while drilling device on the screw drill body of different diameters by the mutual cooperation of multiple components in the connecting mechanism, only by replacing the connecting sleeve 2 and the threaded connecting pipe 2 that match the screw drill body, and facilitates the installation and disassembly of the directional measurement while drilling device and the screw drill body, thereby reducing the number of directional measurement while drilling devices, thereby reducing the on-site floor space and purchase cost, and effectively improving the convenience and practicality of the device.

[0017] 2. By setting up the protective mechanism and replacing protective plates of different widths, the gap between connecting sleeve 1 and connecting sleeve 2 can be easily closed, thereby preventing soil and debris from falling into the gap between connecting sleeve 2 and connecting sleeve 1 during drilling, affecting the use and cleaning of the connecting mechanism, playing a protective role, and effectively improving the protective performance of the device.

[0018] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0020] Figure 1 This is a schematic diagram of the overall structure of an ultra-short radius screw drill tool for drilling operations according to the present invention;

[0021] Figure 2 This is a schematic structural diagram of a directional measurement while drilling device for an ultra-short radius screw drill tool for drilling operations according to the present invention;

[0022] Figure 3 This is a structural schematic diagram of a screw drill body of an ultra-short radius screw drill for drilling operations according to the present invention;

[0023] Figure 4 This is a structural schematic diagram of a threaded connection pipe 1 of an ultra-short radius screw drill tool for drilling operations according to the present invention;

[0024] Figure 5 The present invention is an ultra-short radius screw drill for drilling operations Figure 1 A in the middle is an enlarged structural diagram;

[0025] Figure 6 This is a schematic structural diagram of a connection mechanism of an ultra-short radius screw drill tool for drilling operations according to the present invention;

[0026] Figure 7 This is a schematic structural diagram of a through groove of an ultra-short radius screw drill tool for drilling operations according to the present invention;

[0027] Figure 8 This is a schematic structural diagram of a limit rod of an ultra-short radius screw drill tool for drilling operations according to the present invention;

[0028] Figure 9 The figure is a schematic structural diagram of a protection mechanism of an ultra-short radius screw drill tool for drilling operations according to the present invention.

[0029] Legend:

[0030] 1. Directional measurement while drilling device; 101. Flexible housing 1; 102. Cable-type drill pipe; 103. Non-magnetic drill pipe 1; 104. Non-magnetic drill pipe 2; 105. Measuring probe; 2. Screw drill tool body; 201. Flexible housing 2; 202. Bypass valve assembly; 203. Motor assembly; 204. Universal joint assembly; 205. Drive shaft assembly; 206. Drill bit; 3. Connecting mechanism; 301. Connecting sleeve 1; 302. Threaded connecting pipe 1; 303. Connecting sleeve 2; 304. Threaded connecting pipe Connecting pipe 2; 305, groove; 306, spring; 307, support plate; 308, through groove; 309, clamping plate; 310, clamping groove; 311, supporting sleeve; 312, rotating sleeve; 313, rotating plate; 314, clamping block; 4, rotating rod; 5, threaded through hole 1; 6, limiting rod; 7, knob; 8, protective mechanism; 801, mounting groove; 802, mounting block; 803, threaded through hole 2; 804, screw; 805, protective plate; 9, thread groove 1; 10, thread groove 2. DETAILED DESCRIPTION

[0031] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it should not be understood as a limitation on the scope of protection of the present invention.

[0032] Reference Figures 1-9An ultra-short radius screw drill for drilling operations includes a directional measurement while drilling device 1, a screw drill body 2, and a connecting mechanism 3: the screw drill body 2 is installed below the directional measurement while drilling device 1, and the connecting mechanism 3 is arranged between the directional measurement while drilling device 1 and the screw drill body 2. The connecting mechanism 3 includes a connecting sleeve 1 301, the inner wall of the connecting sleeve 1 301 is fixedly connected to a threaded connecting pipe 1 302, the outer surface of the connecting sleeve 1 301 is movably connected to a connecting sleeve 2 303, and the inner wall of the connecting sleeve 2 303 is fixedly connected to a threaded connecting pipe 2 04, the outer surface of the connecting sleeve 1 301 is symmetrically provided with grooves 305, the inner wall of the groove 305 is fixedly connected with a spring 306, and the other end of the spring 306 is fixedly connected with a support plate 307. The connecting sleeve 2 303 is provided with a through groove 308 on the side close to the groove 305, and a clamping plate 309 is fixedly connected to the inner bottom wall of one side of the through groove 308. A clamping groove 310 is provided on one side of the clamping plate 309, and a supporting sleeve 311 is fixedly connected to one side of the support plate 307. The outer surface of the supporting sleeve 311 is rotatably connected with a rotating sleeve 312. The rotating sleeve The outer surface of one side of 312 is fixedly connected with a rotating plate 313, and one side of the rotating plate 313 is fixedly connected with a block 314. One side of the rotating sleeve 312 is fixedly connected with a rotating rod 4. A threaded through hole 15 is provided on the side wall of the supporting sleeve 311 near the rotating rod 4. The inner wall of the threaded through hole 15 is threadedly connected to a limiting rod 6. One end of the limiting rod 6 is fixedly connected with a knob 7. A protective mechanism 8 is provided on the upper surface of the connecting sleeve 2 303. The protective mechanism 8 includes a mounting groove 801 symmetrically provided on the outer surface of the connecting sleeve 2 303, and the inner wall of the mounting groove 801 is mounted There is a mounting block 802, and a threaded through hole 2 803 is opened on one side of the mounting block 802. The inner wall of the threaded through hole 2 803 is threadedly connected with a screw 804, and the screw 804 is threadedly connected to the mounting groove 801. The upper surface of the mounting block 802 is fixedly connected with a protective plate 805. The connecting mechanism 3 and the protective mechanism 8 are both made of titanium alloy. The protective plate 805 is installed on the outer surface of the connecting sleeve 1 301 and the upper surface of the connecting sleeve 2 303. The width of the protective plate 805 is adapted to the width between the outer surface of the connecting sleeve 1 301 and the connecting sleeve 2 303.

[0033] With such a configuration, it is necessary to select screw drill tool bodies 2 of different sizes for drilling operations according to on-site requirements, resulting in the presence of multiple screw drill tool bodies 2 of different sizes on-site that need to be equipped with the same number of directional measurement while drilling devices 1, which increases the site footprint and increases the purchase cost of the directional measurement while drilling device 1, making it inconvenient to use. The present device facilitates the installation of the directional measurement while drilling device 1 on screw drill tool bodies 2 of different sizes for use (it should be noted that the directional measurement while drilling device 1 can only be installed on screw drill tool bodies 2 with a diameter larger than that of its flexible housing 101). The directional measurement while drilling device 1 is used on the drill tool body 2 to ensure that the directional measurement while drilling device 1 can enter the borehole for monitoring). It is only necessary to select the connecting sleeve 2 303 with a diameter that matches the diameter of the flexible shell 201 of the screw drill tool body 2, and then install the connecting sleeve 2 303 and the connecting sleeve 1 301 together through the connecting mechanism 3 to achieve the installation of the directional measurement while drilling device 1 on screw drill tool bodies 2 of different sizes for use, thereby reducing the number of directional measurement while drilling devices 1, reducing the purchase cost, and meeting different usage requirements, effectively improving the flexibility and applicability of the device.

[0034] The directional measurement while drilling device 1 comprises a flexible housing 101, a cable-type drill rod 102 disposed within the flexible housing 101, a non-magnetic drill rod 103 and a non-magnetic drill rod 2 104 disposed on one side of the cable-type drill rod 102, and a measuring probe 105 disposed between the non-magnetic drill rod 103 and the non-magnetic drill rod 2 104. A thread groove 9 is provided on the inner wall of the flexible housing 101 on the side near the threaded connecting pipe 302. The directional measurement while drilling device 1 is connected to the connecting mechanism 3 via the thread groove 9 and the threaded connecting pipe 302. The screw drill body 2 is formed by the flexible housing 22. 01, the bypass valve assembly 202, the motor assembly 203, the universal joint assembly 204, the drive shaft assembly 205 and the drill bit 206 are composed; a thread groove 2 10 is provided on the inner wall of the flexible shell 201 close to the threaded connecting pipe 2 304; the screw drill body 2 is connected to the connecting mechanism 3 through the thread groove 2 10 and the threaded connecting pipe 2 304; the central axes of the directional while drilling measurement device 1, the connecting mechanism 3 and the screw drill body 2 are all in a straight line; the directional while drilling measurement device 1, the screw drill body 2, the connecting mechanism 3 and the protective mechanism 8 are assembled and detachable connection structures.

[0035] With such a configuration, through the cooperation of the directional drilling measurement device 1 and the screw drill body 2, it is possible to monitor the well inclination, well depth, position, etc. at any time during the drilling process of the screw drill body 2 through the drill bit 206, and adjust the drilling direction and position of the drill bit 206 based on the monitored data. The working principle and structure of the screw drill body 2 and the directional drilling measurement device 1 are the same as those of the existing screw drill body 2 and the directional drilling measurement device 1. The mud enters the bypass valve assembly 202 and flows through the motor assembly 203, and the mud drives the rotor in the motor assembly 203 to rotate on the inner wall of the stator. The rotation of the rotor drives the universal joint assembly 204 to rotate, and the universal joint assembly 204 drives the transmission shaft assembly 205 to rotate, so that the transmission shaft assembly 205 drives the drill bit 206 to rotate, and then the measuring probe 105 monitors various parameters in real time during the drilling process, and transmits various parameters back to the control system on the ground. The drilling trajectory of the screw drill body 2 is accurately controlled by the control system to achieve the purpose of directional drilling. The outer shells of the directional downhole measurement device 1 and the screw drill body 2 are both made of flexible materials, mostly titanium alloy, which has good corrosion resistance and flexibility, so that drilling operations can be carried out according to drilling requirements.

[0036] Working principle: When it is necessary to install the directional measurement while drilling device 1 on a screw drill body 2 of different diameters for directional drilling, first select the connecting sleeve 2 303 and the threaded connecting pipe 2 304 that are compatible with the inner and outer diameters of the screw drill body 2, then install the connecting sleeve 1 301 and the connecting sleeve 2 303 through the connecting mechanism 3, place the connecting sleeve 1 301 in the connecting sleeve 2 303, pull the support plate 307 according to the position of the through groove 308, drive the support plate 307 to move from the inner wall of the groove 305 to one side of the clamping plate 309, and stretch the spring 306. When one side of the support plate 307 is in contact with the clamping plate 309, turn the knob 7 forward to drive the limit rod 6 to move inside the threaded through hole 1 5. When the locking cam 314 is unlocked, the locking cam 314 is unlocked and the locking cam 314 is unlocked, so that the first and second locking cams 301 are unlocked.

[0037] Then install the protective mechanism 8 on the outer surface of the connecting sleeve 1 301 and the upper surface of the connecting sleeve 2 303, select and install a protective plate 805 that matches the distance between the connecting sleeve 2 303 and the outer surface of the connecting sleeve 1 301, and install the mounting block 802 on the lower surface of the protective plate 805 in the mounting groove 801, and then screw the screw 804 into the threaded through hole 2 803 to limit the mounting block 802 in the mounting groove 801, so that the protective plate 805 protects the gap between the connecting sleeve 2 303 and the connecting sleeve 1 301, preventing debris and soil from falling into the connecting sleeve. The gap between the second threaded connection pipe 303 and the connecting sleeve 1 301 affects the use of the connecting mechanism 3. After installing the protective plate 805, align the threaded connecting pipe 1 302 and the second threaded connecting pipe 304 of the connecting mechanism 3 with the thread groove 1 9 of the flexible shell 101 and the thread groove 2 10 of the flexible shell 201. Rotate the flexible shell 101 and the flexible shell 201 so that the threaded connecting pipe 1 302 and the second threaded connecting pipe 304 are engaged with the thread groove 1 9 and the thread groove 2 10 respectively, thereby facilitating the installation of the directional measurement while drilling device 1 and the screw drill body 2 through the connecting mechanism 3.

[0038] The specific assembly method is described in detail. When the size of the connecting sleeve 2 303 changes, for example, when the size of the connecting sleeve 2 303 is larger than the connecting sleeve 1 301, when the connecting sleeve 2 303 and the connecting sleeve 1 301 are assembled, since the connecting sleeve 1 301 is provided with a spring 306, the support plate 307 is pulled to stretch the spring 306 to drive the clamping block 314 to move to one side of the connecting sleeve 2 303. When the support plate 307 abuts against one side of the clamping plate 309, it means that the support plate 307 is no longer moving, because the clamping plate 309 on the connecting sleeve 2 303 limits the movement of the support plate 307 (refer to the attached Figure 4When the locking plate 310 is engaged, the limiting rod 6 is reset, thereby preventing the locking block 314 from rotating upward and disengaging from the locking groove 310. 0, and then by moving the support plate 307 to stretch the spring 306, the clamping plate 309 limits the moving distance of the support plate 307, the clamping block 314 is clamped on the inner wall of the clamping groove 310, and the limiting rod 6 limits the clamping block 314 to rotate upward to realize the assembly of the connecting sleeve 1 301 and the connecting sleeve 2 303 of different sizes, that is, the connecting sleeve 2 303 of different diameters is limited and clamped on the outer wall of the connecting sleeve 1 301, and the protective mechanism 8 is installed on the connecting sleeve 2 303. In the installation groove 801, a protective plate 805 with appropriate outer diameter and inner diameter is selected and installed on the upper surface of the connecting sleeve 2 303 to close the distance between the connecting sleeve 1 301 and the connecting sleeve 2 303 of different diameters (the outer diameter of the protective plate 805 matches the outer diameter of the connecting sleeve 2 303, and the inner diameter of the protective plate 805 matches the outer diameter of the connecting sleeve 1 301). Because the inner and outer diameters of the connecting sleeve 2 303 below are matched with the inner and outer diameters of the screw drill body 2, the distance between the connecting sleeve 1 301 and the connecting sleeve 2 303 below is closed by the screw drill body 2. Therefore, it is only necessary to replace the connecting sleeve 2 303, the threaded connecting pipe 2 304 and the protective plate 805 of different sizes to facilitate the installation of the directional drilling measurement device 1 on screw drill bodies 2 of different diameters for use, which greatly reduces the on-site footprint, effectively saves the purchase cost, and improves the convenience and applicability of the device.

[0039] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the scope of the present invention.

Claims

1. An ultra-short radius screw drill for drilling operations, characterized in that: The invention comprises a directional drilling measurement device (1), a screw drill body (2) and a connecting mechanism (3): the screw drill body (2) is installed below the directional drilling measurement device (1), the connecting mechanism (3) is arranged between the directional drilling measurement device (1) and the screw drill body (2), the connecting mechanism (3) comprises a connecting sleeve 1 (301), the inner wall of the connecting sleeve 1 (301) is fixedly connected to a threaded connecting pipe 1 (302), the outer surface of the connecting sleeve 1 (301) is movably connected to a connecting sleeve 2 (303), and the inner wall of the connecting sleeve 2 (303) is fixedly connected to a threaded connecting pipe 2 (304); The outer surface of the connecting sleeve 1 (301) is symmetrically provided with grooves (305), the inner wall of the groove (305) is fixedly connected with a spring (306), the other end of the spring (306) is fixedly connected with a support plate (307), the connecting sleeve 2 (303) is provided with a through groove (308) on a side close to the groove (305), a clamping plate (309) is fixedly connected to the inner bottom wall of one side of the through groove (308), a clamping groove (310) is provided on one side of the clamping plate (309), and a support sleeve (311) is fixedly connected to one side of the support plate (307). The outer surface of the supporting sleeve (311) is rotatably connected to the rotating sleeve (312), the outer surface of one side of the rotating sleeve (312) is fixedly connected to the rotating plate (313), the rotating plate (313) is fixedly connected to a clamping block (314), the rotating sleeve (312) is fixedly connected to a rotating rod (4) on one side, the supporting sleeve (311) is provided with a threaded through hole (5) on a side wall close to the rotating rod (4), the inner wall of the threaded through hole (5) is threadedly connected to a limiting rod (6), and the clamping block (314) is clamped to the inner wall of the clamping groove (310).

2. The ultra-short radius screw drill tool for drilling operations according to claim 1, characterized in that: One end of the limiting rod (6) is fixedly connected to a knob (7).

3. The ultra-short radius screw drill tool for drilling operations according to claim 1, characterized in that: A protective mechanism (8) is provided on the upper surface of the second connecting sleeve (303), and the protective mechanism (8) includes a mounting groove (801) symmetrically provided on the outer surface of the second connecting sleeve (303), a mounting block (802) is installed on the inner wall of the mounting groove (801), a threaded through hole (803) is provided on one side of the mounting block (802), a screw (804) is threadedly connected to the inner wall of the threaded through hole (803), and the screw (804) is threadedly connected to the mounting groove (801), and a protective plate (805) is fixedly connected to the upper surface of the mounting block (802).

4. The ultra-short radius screw drill tool for drilling operations according to claim 3, characterized in that: The connecting mechanism (3) and the protective mechanism (8) are both made of titanium alloy.

5. The ultra-short radius screw drill tool for drilling operations according to claim 3, characterized in that: The protective plate (805) is installed on the outer surface of the connecting sleeve 1 (301) and the upper surface of the connecting sleeve 2 (303), and the width of the protective plate (805) is adapted to the width between the outer surface of the connecting sleeve 1 (301) and the connecting sleeve 2 (303).

6. The ultra-short radius screw drill tool for drilling operations according to claim 1, characterized in that: The directional measurement while drilling device (1) comprises a flexible housing (101), a cable-type drill rod (102) arranged in the flexible housing (101), a non-magnetic drill rod (103) and a non-magnetic drill rod (104) arranged on one side of the cable-type drill rod (102), and a measuring probe (105) arranged between the non-magnetic drill rod (103) and the non-magnetic drill rod (104).

7. The ultra-short radius screw drill tool for drilling operations according to claim 6, characterized in that: A thread groove (9) is provided on the inner wall of the flexible housing (101) on one side close to the threaded connecting pipe (302), and the directional drilling measurement device (1) is connected to the connecting mechanism (3) via the thread groove (9) and the threaded connecting pipe (302).

8. The ultra-short radius screw drill tool for drilling operations according to claim 1, characterized in that: The screw drill body (2) is composed of a second flexible shell (201), a bypass valve assembly (202), a motor assembly (203), a universal shaft assembly (204), a transmission shaft assembly (205) and a drill bit (206). A second thread groove (10) is provided on the inner wall of the second flexible shell (201) near the second threaded connecting pipe (304). The screw drill body (2) is connected to the connecting mechanism (3) via the second thread groove (10) and the second threaded connecting pipe (304).

9. The ultra-short radius screw drill tool for drilling operations according to claim 1, characterized in that: The central axes of the directional measurement while drilling device (1), the connecting mechanism (3), and the screw drill body (2) are all on a straight line.

10. The ultra-short radius screw drill tool for drilling operations according to claim 3, characterized in that: The directional measurement while drilling device (1), the screw drill body (2), the connecting mechanism (3) and the protective mechanism (8) are in an assembled detachable connection structure.

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