Fracture zone drilling build-up tool

Abstract

The present application relates to the field of coal mining device, specifically disclose a broken zone drilling strong build angle drill tool, including: the inner wall of the bottom end of the sealing sleeve is fixedly connected with a limiting block, the limiting block is rotatably connected with a screw rod, and the upper end of the limiting block is fixedly connected with a screw rod sleeve; The screw rod sleeve is sleeved on the screw rod; The annular base is fixedly connected on the inner wall of the sealing sleeve, and the annular base is fixedly connected with a pressure sensor; One end of the electric push rod is fixedly connected with an annular mounting seat, and the annular mounting seat is fixedly connected on the outer cylinder wall of the screw rod sleeve; The signal is transmitted to the electric push rod through the pressure sensor, and the pushing size of the electric push rod is controlled through different pressure, so that the drilling angle adjustment of the drill bit is accurately realized; The friction is reduced by supporting the well wall through the supporting roller, the drilling smoothness is increased, the well wall is supported through the elastic centralizer, not only the angle adjustment is more rapid, also ensures the linearity of the well.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of coal mining device, specifically to a broken zone drilling strong build angle drill. BACKGROUND

[0002] When the underground oil and gas resources are exploited, the drill bit is driven by the transmission shaft to carry out drilling operation.

[0003] In the prior art, many foreign companies have the ability to provide continuous pipe drilling technology services, and the continuous pipe drilling tools used by them are also different, with various types but basically similar functions. Commonly used are safety joints, directional tools, measurement-while-drilling tools and other special tools, as well as connectors, non-rotating joints, and single-flow valves.

[0004] However, in the drilling work, when the drill bit encounters hard rock-soil layer, the drilling angle of the drill bit is inconsistent with the rock-soil layer, so that the unilateral working strength of the drill bit increases greatly, which easily causes damage to the drill bit, and the side angle drilling is difficult, which is not conducive to the progress of the drilling work. SUMMARY

[0005] The purpose of the present application is to provide a broken zone drilling strong build angle drill to solve the problems raised in the background art.

[0006] To achieve the above purpose, the present application provides the following technical scheme: a broken zone drilling strong build angle drill, comprising:

[0007] A sealing sleeve, a limiting block is fixedly connected to the inner wall of the bottom end of the sealing sleeve, a screw rod is rotatably connected to the limiting block, and a screw rod sleeve is fixedly connected to the upper end of the limiting block; the screw rod sleeve is sleeved on the screw rod;

[0008] An annular base is fixedly connected to the inner wall of the sealing sleeve, and a pressure sensor is fixedly connected to the annular base; and

[0009] An electric push rod, one end of the electric push rod is fixedly connected with an annular mounting seat, and the annular mounting seat is fixedly connected to the outer cylinder wall of the screw rod sleeve.

[0010] Preferably, the bottom end of the screw rod is fixedly connected with a drill bit, and an elastic centralizer is fixedly connected to the outer side wall of the end of the sealing sleeve close to the drill bit.

[0011] Preferably, four springs are fixedly connected to the upper side of the limiting block, and the four springs are distributed in a square shape, and an annular sheet is fixedly connected to the end of the four springs away from the limiting block.

[0012] Preferably, the pressure sensor is provided with four, and the four pressure sensors are distributed in a square shape, and the upper end of the four pressure sensors is fixedly connected to the lower end of the annular sheet.

[0013] Preferably, the electric push rod is provided with four, and with four pressure sensors same direction distribution, electric push rod away from the annular mounting seat one end fixedly connected with support roller through the barrel wall of the sealing sleeve.

[0014] Preferably, the electric push rod and the sealing sleeve are sealed.

[0015] Preferably, the pressure sensor is connected with the same direction electric push rod circuit through the wire.

[0016] Compared with the prior art, the beneficial effects of the present application are:

[0017] When the drill bit contacts the hard rock layer, the drill bit tilts to one side due to the first contact on one side, and then the annular piece presses the pressure sensor, the signal is transmitted to the electric push rod through the pressure sensor, and the pushing size of the electric push rod is controlled by different pressure sizes, so as to accurately realize the drilling angle adjustment of the drill bit; the support roller supports the well wall to reduce the friction, increase the drilling smoothness, the sealing connection of the electric push rod and the sealing sleeve avoids the impurities in the drilling process from entering the sealing sleeve and damaging the internal elements, and the elastic centralizer supports the well wall, which not only makes the angle adjustment more quickly, but also ensures the straightness of the well. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall cross-sectional structure of the present application;

[0019] Figure 2 It is a practical working schematic diagram of the present application;

[0020] Figure 3 It is Figure 1 the structure enlargement of A area.

[0021] In the figure: 1, sealing sleeve; 2, support roller; 3, screw sleeve; 4, elastic centralizer; 5, limit block; 6, screw; 7, drill bit; 8, electric push rod; 9, annular mounting seat; 10, wire; 11, pressure sensor; 12, annular base; 13, annular piece; 14, spring; 15, hard rock layer. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme of the present application clear, complete and the advantages more clear and obvious, the following will be further described in detail by combining with the drawings. It should be understood that the specific embodiments described here are part of the embodiments of the present application, not all embodiments, which are used to explain the embodiments of the present application, and do not limit the embodiments of the present application. All other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0023] Embodiment One

[0024] Please refer to Figures 1-3 The application provides a technical scheme: a broken zone drilling strong build-inclination drilling tool, comprising: a sealing sleeve 1, a limiting block 5 is fixedly connected to the inner wall of the bottom end of the sealing sleeve 1, the limiting block 5 is rotationally connected with a screw rod 6, and the limiting block 5 is fixedly connected with a screw rod sleeve 3 at the upper end; the screw rod sleeve 3 is sleeved on the screw rod 6; an annular base 12 is fixedly connected to the inner wall of the sealing sleeve 1, and a pressure sensor 11 is fixedly connected to the annular base 12; and an electric push rod 8 is fixedly connected with an annular mounting seat 9 at one end, and the annular mounting seat 9 is fixedly connected to the outer cylinder wall of the screw rod sleeve 3; the pressure sensor 11 is circuit-connected with the same-direction electric push rod 8 through an electric wire 10;

[0025] The same-direction electric push rod 8 generates a pushing force by transmitting a signal to the pressure sensor 11, so as to change the drilling angle of the drill bit 7, and avoid damage of the drill bit 7 due to unilateral contact with the hard rock-soil layer 15.

[0026] Embodiment Two

[0027] On the basis of embodiment one, in order to facilitate accurate and rapid adjustment of the required angle, a spring 14 is fixedly connected above the limiting block 5, the spring 14 is provided with four and is distributed in a square shape, and an annular sheet 13 is fixedly connected to the end of the four springs 14 away from the limiting block 5; the pressure sensor 11 is provided with four and is distributed in a square shape, and the upper end of the four pressure sensors 11 is fixedly connected to the lower end of the annular sheet 13;

[0028] When the drill bit 7 contacts the hard rock-soil layer 15, since the drill bit 7 first contacts on one side, the drill bit 7 is inclined to one side, and then the annular sheet 13 applies pressure to the pressure sensor 11, the electric push rod 8 is controlled by transmitting a signal to the electric push rod 8 through the pressure sensor 11, and the pushing size of the electric push rod 8 is controlled by different pressure sizes, so as to accurately realize adjustment of the drilling angle of the drill bit 7.

[0029] Embodiment Three

[0030] On the basis of embodiment one, in order to ensure smooth drilling and angle adjustment of the drilling tool, the bottom end of the screw rod 6 is fixedly connected with the drill bit 7, and the outer side wall of the end of the sealing sleeve 1 close to the drill bit 7 is fixedly connected with an elastic centralizer 4; the electric push rod 8 is provided with four and is distributed in the same direction with the four pressure sensors 11, the end of the electric push rod 8 away from the annular mounting seat 9 is fixedly connected with a supporting roller 2 through the cylinder wall of the sealing sleeve 1; the connection between the electric push rod 8 and the sealing sleeve 1 is sealed;

[0031] The supporting roller 2 supports the well wall to reduce friction and increase drilling smoothness. The electric push rod 8 is connected with the sealing sleeve 1 to avoid impurities from entering the sealing sleeve 1 and damaging the internal elements during drilling. The elastic centralizer 4 supports the well wall, which not only makes the angle adjustment faster, but also ensures the straightness of the well.

[0032] While the embodiments of the application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A force-driven directional drilling tool for fracturing and drilling, characterized in that: The drilling tool for drilling into fractured zones and creating directional slopes includes: A sealing sleeve (1) is fixedly connected to a limiting block (5) on the inner wall of its bottom end. A screw (6) is rotatably connected to the limiting block (5). A screw sleeve (3) is fixedly connected to the upper end of the limiting block (5). The screw sleeve (3) is fitted onto the screw (6). An annular base (12) is fixedly connected to the inner wall of the sealing sleeve (1), and a pressure sensor (11) is fixedly connected to the annular base (12); and An electric push rod (8) is fixedly connected to one end of an annular mounting seat (9), which is fixedly connected to the outer wall of the screw sleeve (3). The bottom end of the screw (6) is fixedly connected to the drill bit (7), and an elastic stabilizer (4) is fixedly connected to the outer wall of the sealing sleeve (1) near the drill bit (7). A spring (14) is fixedly connected above the limiting block (5). There are four springs (14) arranged in a square. An annular piece (13) is fixedly connected to one end of the four springs (14) away from the limiting block (5). The pressure sensor (11) is provided in four parts and is arranged in a square. The upper ends of the four pressure sensors (11) are fixedly connected to the lower end of the annular plate (13).

2. The drilling tool for forced directional drilling in fractured zones according to claim 1, characterized in that: The electric push rod (8) is provided in four directions and is distributed in the same direction as the four pressure sensors (11). The end of the electric push rod (8) away from the annular mounting seat (9) passes through the cylinder wall of the sealing sleeve (1) and is fixedly connected to the support roller (2).

3. The drilling tool for forced directional drilling in fractured zones according to claim 2, characterized in that: The connection between the electric push rod (8) and the sealing sleeve (1) is sealed.

4. The drilling tool for forced directional drilling in fractured zones according to claim 3, characterized in that: The pressure sensor (11) is connected to the electric push rod (8) in the same direction via a wire (10).

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