An underground switch triggering device and an underground intelligent opening tool

Abstract

The present invention relates to the field of oil well downhole construction, and particularly relates to a downhole switch triggering device, which comprises a connection section, a sealing section and a triggering section connected in sequence; the connection section is located in the direction of the intelligent opening tool going down the well, and the connection with the sealing section is a weak connection. The connection section is used for fixedly connecting with the intelligent opening tool, and an impact hole is provided on the end face of the connection section away from the sealing section; the sealing section is used for sliding and sealing connection with the intelligent opening tool; the surface of the triggering section is made of a conductive material. When hydraulic pressure is received in the impact hole, the connection part breaks, and the sealing section and the triggering section move together. Under the action of pumping and / or formation fluid pressure, the connection part between the connection section and the sealing section breaks, and the formation fluid pushes the sealing section to drive the triggering section to move, triggering the switch to conduct and turning on the circuit, starting the power supply, and the downhole tool is powered on after being put into the wellhead, ensuring that the equipment has sufficient power at the downhole working position to complete the work.

Description

Technical Field

[0001] The present invention relates to the field of oil and gas exploitation, and particularly to a downhole switch triggering device and a downhole intelligent opening tool. Background Art

[0002] In the field of oil and gas exploitation, many devices need to be put into oil wells and powered on for operation underground. Generally, oil wells are mostly located in remote areas, and various devices need to be transported for a long time to reach the oil wells. For existing devices that need to be put into oil wells and powered on underground, the electrical components are usually connected to the built-in power supply when the production is completed. Since there is a long interval between production completion and actual underground deployment, including storage and long-distance transportation, the power supply will consume electricity after the connection between the power supply and the electrical components. After the device is transported to the oil well and put into the well, it is easy to occur that the power in the device is exhausted and cannot work, or the power is too low to effectively complete the underground work. Summary of the Invention

[0003] The present invention aims to provide a downhole switch triggering device and a downhole intelligent opening tool, which can, when the device is put into use, connect the built-in power supply to the electrical components by triggering the switch, avoid power consumption of the power supply due to too long an interval between production completion and use, and ensure that the device has sufficient power to complete the work underground.

[0004] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] A downhole switch triggering device disclosed by the present invention includes a connection section, a sealing section, and a triggering section connected in sequence;

[0006] The connection section is located in the direction of the intelligent opening tool going down the well, and the connection with the sealing section is a weak connection. The connection section is used for fixedly connecting with the intelligent opening tool. An impact hole is provided on the end surface of the connection section away from the sealing section. The impact hole is a blind hole, and the impact hole passes through the connection and extends into the sealing section;

[0007] The sealing section is used for sliding and sealing connection with the intelligent opening tool;

[0008] The surface of the triggering section is made of a conductive material. When hydraulic pressure is applied in the impact hole, the connection breaks, and the sealing section and the triggering section move together.

[0009] The beneficial effects of the present invention are as follows: During the transportation and storage process before the downhole intelligent opening tool is dropped from the wellhead, the triggering section in the switch triggering device is far away from the triggering switch of the downhole tool, the triggering switch is in the normally open state, and the power supply connected to it is not energized. When the downhole intelligent opening tool is dropped at the wellhead, the downhole tool is pumped and pressurized at the wellhead so that the wellhead pressure is greater than or equal to the formation pressure. The bottom of the impact hole in the switch triggering device is impacted by the pumping and / or formation fluid pressure. Under the action of the pumping and / or formation fluid pressure, the connection between the connecting section and the sealing section is broken, and the formation fluid pushes the sealing section to drive the triggering section to move. The triggering section moves to the triggering switch, and the triggering switch is turned on to connect the circuit. Energizing the downhole tool after it is put into the wellhead in this way avoids power consumption during storage and transportation, and ensures that there is enough power at the downhole working position of the equipment to complete the work; at the same time, the sealing section is in sliding seal cooperation with the downhole tool, avoiding the leakage or short circuit of the circuit caused by the contact between the formation fluid and the power supply.

[0010] Further, an annular sealing groove is provided on the outer side wall of the sealing section, and a sealing ring is provided in the annular sealing groove. The sealing section is slidably and sealingly connected to the intelligent opening tool through the sealing ring.

[0011] The beneficial effect of adopting the above further scheme is: The sealing sliding connection is carried out through the sealing ring, with a simple structure and reliable sealing, which can ensure the sealing between the sealing section and the downhole tool and avoid short circuit of the circuit.

[0012] Further, an annular shear groove is provided on the outer side wall at the connection between the connecting section and the sealing section, and the annular shear groove forms a weak connection with the impact hole.

[0013] The beneficial effect of adopting the above further scheme is: By providing an annular shear groove on the outer side wall, the inner diameter of the impact hole can be set smaller, and the wall thickness of the connecting section will be larger, which is convenient for fixed connection with the intelligent opening tool.

[0014] Further, the outer diameter of the triggering section is smaller than the outer diameter of the sealing section, and a limiting platform is formed at the junction of the triggering section and the sealing section.

[0015] The beneficial effect of adopting the above further scheme is: By providing the limiting platform, the disconnected sealing section and triggering section move together to make the triggering section turn on the triggering switch; due to the provision of the limiting platform, the limiting boss will limit the further movement of the triggering section, ensuring the reliability of the triggering switch being turned on.

[0016] The present invention also discloses a downhole intelligent opening tool, including an intelligent opening tool and the above-mentioned downhole switch triggering device;

[0017] One end of the intelligent opening tool has a switch through-hole for sliding and sealing connection with the sealing section. A trigger switch is provided at one end inside the intelligent opening tool near the switch through-hole. The connection section is fixedly connected to the other end of the switch through-hole. When hydraulic pressure is applied inside the impact hole, the connection part breaks, and the sealing section and the trigger section move together. The trigger section extends out of one end of the switch through-hole and turns on the trigger switch.

[0018] The beneficial effects of the downhole intelligent opening tool of the present invention are as follows: During the transportation and storage before the downhole intelligent opening tool is put into the wellhead, the trigger section in the switch trigger device is far from the trigger switch of the downhole tool, and the trigger switch is in the normally open state, and the power supply connected to it is not energized. When the downhole intelligent opening tool is put into operation at the wellhead, the downhole tool is pumped and pressurized at the wellhead so that the wellhead pressure is greater than or equal to the formation pressure. The bottom of the impact hole in the switch trigger device is impacted by the pumping and / or formation fluid pressure. Under the action of the pumping and / or formation fluid pressure, the connection part between the connection section and the sealing section breaks, and the formation fluid pushes the sealing section to drive the trigger section to move. The trigger section moves to the trigger switch to turn on the trigger switch and connect the circuit. This downhole tool is powered on after being put into the wellhead, avoiding power consumption during storage and transportation, and ensuring that there is enough power for the equipment to complete the work at the downhole working position; at the same time, the sealing section is in sliding seal cooperation with the downhole tool, avoiding the contact between the formation fluid and the power supply causing electric leakage or short circuit of the circuit.

[0019] Further, it also includes a shock absorption and centering device. The shock absorption and centering device is made of elastic material and has a shock absorption part, a centering part, and a fluid conduction through-hole;

[0020] One end of the shock absorption part is connected to one end of the centering part; the centering part is in a cylindrical structure, and there are centering wings on the axial direction of the centering part, and the centering wings extend towards the other end of the centering part;

[0021] One end of the shock absorption part or / and the other end of the centering part are fixedly connected to one end of the intelligent opening tool;

[0022] The fluid conduction through-hole is communicated with the impact hole.

[0023] The beneficial effects of adopting the above further solution are as follows: During the process of the intelligent opening device being lowered into the well, when the shock-absorbing part is impacted by well fluid or the inner wall of the wellbore, due to the shock-absorbing effect of the shock-absorbing part, the vibration impact on the electronic components inside the downhole intelligent opening tool is relatively small, which can well protect the electronic components inside the downhole intelligent opening tool, ensure the normal function of the electronic components, improve the reliability of the downhole intelligent opening tool, and avoid the failure of the electronic components. At the same time, during the process of the downhole intelligent opening tool being lowered into the well, through the action of the centering part, the downhole intelligent opening tool is always kept in the middle position of the wellbore, the downhole intelligent opening tool will not be offset, the friction between the intelligent opening device and the inner wall of the casing is reduced, and the efficiency and reliability of lowering the well are improved.

[0024] Further, the hardness of the shock-absorbing part is less than the hardness of the centering part.

[0025] The beneficial effects of adopting the above further solution are as follows: The shock-absorbing part with a smaller hardness ensures a good shock-absorbing effect; for the centering part with a higher hardness, the centering part will not produce a large deformation, ensuring the centering effect.

[0026] Further, a coil groove for placing a signal transmission line and a wire groove for controlling the passage of a control wire are provided between the shock-absorbing part and the centering part, and the control wire is electrically connected to the trigger switch.

[0027] The beneficial effects of adopting the above further solution are as follows: By arranging the coil groove and the wire groove between the shock-absorbing part and the centering part, since the shock-absorbing part and the centering part are located at the front end of the downhole intelligent opening tool, arranging the coil groove at the front end of the downhole intelligent opening tool ensures that the downhole intelligent opening tool can obtain relevant control signals earlier, improving the reliability of the control of the downhole intelligent opening tool; at the same time, due to the good shock-absorbing effect of the device main body, the coil in the downhole intelligent opening tool is better protected.

[0028] Further, a plurality of flow discharge grooves are provided on the centering wing, and the flow discharge grooves extend along the axial direction of the centering part.

[0029] The beneficial effects of adopting the above further solution are as follows: The plurality of flow discharge grooves distributed on the centering wing can drain the well fluid, reduce the forward resistance of the downhole intelligent opening tool and make the downhole intelligent opening tool move forward more smoothly, and at the same time prevent the water pumped from the rear of the downhole intelligent opening tool from overturning the centering wing or flushing it off the shock-absorbing part.

[0030] Further, the shock-absorbing part is in a frustum shape, and the diameter of the shock-absorbing part gradually decreases from one end of the shock-absorbing part to the other end of the shock-absorbing part.

[0031] The beneficial effects of adopting the above further solution are as follows: By setting the shock-absorbing part in a frustum shape, the well fluid flows along the inclined plane of the frustum, reducing the resistance of the well fluid to the downhole intelligent opening tool and improving the running-in speed of the downhole intelligent opening tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 FIG. 1 is a schematic structural diagram of the first embodiment of the downhole switch trigger device;

[0033] Figure 2 FIG. 2 is a schematic diagram of the first state of the first embodiment of the downhole intelligent opening tool;

[0034] Figure 3 FIG. 3 Figure 2 is a partial structural diagram of FIG. 3;

[0035] Figure 4 FIG. 4 is a schematic diagram of the second state of the first embodiment of the downhole intelligent opening tool;

[0036] Figure 5 FIG. 5 Figure 4 is a partial structural diagram of FIG. 5;

[0037] Figure 6 FIG. 6 is a schematic structural diagram of the first embodiment of the shock-absorbing and centering device of the downhole intelligent opening tool;

[0038] Figure 7 FIG. 7 Figure 6 is a sectional view of FIG. 7;

[0039] Figure 8 FIG. 8 is a schematic structural diagram of the second embodiment of the shock-absorbing and centering device of the downhole intelligent opening tool;

[0040] Figure 9 FIG. 9 Figure 8 is a sectional view of FIG. 9.

[0041] In the figures: 11, connecting section; 12, sealing section; 13, triggering section; 14, impact hole; 15, sealing ring; 16, external thread; 21, trigger switch; 22, switch through hole; 31, shock-absorbing part; 32, centering part; 33, centering part; 34, centering wing; 35, coil groove, 36, wire groove, 37, drain groove. DETAILED DESCRIPTION OF THE INVENTION

[0042] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings.

[0043] As shown in Figure 1As shown in the figure, Embodiment 1 of the downhole switch triggering device of the present invention includes a connection section 11, a sealing section 12, and a triggering section 13 that are connected in sequence; the connection section 11 is located in the direction of the intelligent opening tool going down the well, and the connection with the sealing section 12 is a weak connection. The connection section 11 is used for fixedly connecting with the intelligent opening tool. On the end face of the connection section 11 away from the sealing section 12, there is an impact hole 14. The impact hole 14 is a blind hole, and the impact hole 14 passes through the connection and extends into the sealing section 12; the sealing section 12 is used for sliding sealing connection with the intelligent opening tool; the surface of the triggering section 13 is made of a conductive material. When hydraulic pressure is applied in the impact hole 14, the connection breaks, and the sealing section 12 and the triggering section 13 move together.

[0044] Among them, the connection section 11 is located in the direction of the intelligent opening tool going down the well, that is, the position where the intelligent opening tool first enters the wellhead. The so-called weak connection means that in the normal state, the two components connected to the connection are in a connected state; when one of the components is subjected to an external force, that is, when the connection is subjected to a small tensile force, the connection breaks, so that the two components connected to the connection are in a separated state; generally, as long as the pressure-bearing strength of the connection is greater than the formation pressure, it can be ensured that the connection will not break; the pressure-bearing strength of the connection is less than the wellhead working pressure to ensure that the connection can be disconnected when entering the wellhead.

[0045] In this embodiment, the way of fixedly connecting the connection section 11 with the intelligent opening tool can be through threaded connection, clamping, etc. In this embodiment, the fracture pressure of the connection can be set according to specific downhole use conditions. For example: in actual work, the pumping pressure at the wellhead is generally 30 Mpa, and the formation fluid pressure in the fracturing section of the horizontal well is generally 25 Mpa; at this time, the fracture pressure of the connection can be set to a pressure-bearing strength less than 25 Mpa, such as 20 Mpa, 15 Mpa, etc. The purpose is to ensure that before the downhole switch triggering device enters the wellhead, the trigger switch is in the normally open state and the power supply is not energized; when the downhole intelligent opening tool is put into operation at the wellhead, the downhole tool is pumped and pressurized at the wellhead to make the wellhead pressure greater than or equal to the formation pressure. The pumping and / or formation fluid pressure impacts the bottom of the impact hole in the switch triggering device. Under the action of the pumping and / or formation fluid pressure, the connection between the connection section and the sealing section breaks, and the formation fluid pushes the sealing section to drive the triggering section to move. The triggering section moves to the trigger switch, and the trigger switch conducts to connect the circuit. This way of powering on after the downhole tool is put into the wellhead avoids power consumption during storage and transportation, and ensures that the device has enough power to complete the work at the downhole working position; at the same time, the sealing section is in sliding sealing cooperation with the downhole tool, avoiding the contact between the formation fluid and the power supply causing electric leakage or short circuit of the circuit.

[0046] In this embodiment, the outer sidewall of the sealing section 12 has an annular sealing groove, and a sealing ring 15 is arranged in the annular sealing groove. The sealing section 12 is slidably and sealingly connected to the intelligent opening tool through the sealing ring 15. Sealing through the sealing ring has a simple structure, reliable sealing, and reliable sealing effect, which can ensure the sealing between the sealing section and the downhole tool and avoid short circuits of the circuit.

[0047] In this embodiment, the outer sidewall at the connection between the connecting section 11 and the sealing section 12 has an annular shear groove 16, and the annular shear groove 16 and the impact hole 14 form a weak connection. By arranging the annular shear groove, the inner diameter of the impact hole 14 can be set smaller, and the wall thickness of the connecting section 11 can be larger, which is convenient for fixedly connecting with the intelligent opening tool.

[0048] In this embodiment, the outer diameter of the triggering section 13 is smaller than that of the sealing section 12, and a limiting platform is formed at the junction of the triggering section 13 and the sealing section 12. By arranging the limiting platform, the disconnected sealing section 12 and triggering section 13 move together, enabling the triggering section 13 to conduct the trigger switch 21; due to the arrangement of the limiting platform, the limiting boss will limit the continuous movement of the triggering section 13, ensuring the reliability of the conduction of the trigger switch 21.

[0049] For the first embodiment of the downhole intelligent opening tool, see Figures 2 to 5 , including an intelligent opening tool, the above-mentioned downhole switch triggering device, and a shock absorption and centralizing device.

[0050] Among them, one end of the intelligent opening tool has a switch through-hole 22 for slidably and sealingly connecting with the sealing section 12. A trigger switch 21 is arranged at one end of the intelligent opening tool near the switch through-hole 22. The connecting section 11 is fixedly connected to the other end of the switch through-hole 22. When hydraulic pressure is applied in the impact hole 14, the connection part breaks, and the sealing section 12 and the triggering section 13 move together. The triggering section 13 extends out of one end of the switch through-hole 22 and conducts the trigger switch 21. In this embodiment, the trigger switch 21 is sealed inside one end of the intelligent opening tool to ensure the normal operation of the trigger switch 21 and other electronic components.

[0051] In this embodiment, when hydraulic pressure is applied in the impact hole 14, the connection part breaks, and the sealing section 12 and the triggering section 13 move together. The triggering section 13 conducts the trigger switch 21, making the positive and negative poles of the power supply contact and the positive and negative poles of the power supply connected, starting the power supply. The downhole tool is powered on after being put into the wellhead, avoiding power consumption during storage and transportation, and ensuring that the equipment has enough power to complete the work at the downhole working position; at the same time, the sealing section and the switch through-hole 22 are in sliding sealing cooperation, avoiding leakage or short circuit of the circuit caused by the formation fluid contacting the power supply.

[0052] In a specific embodiment, the connecting section 11, the sealing section 12, and the triggering section 13 can be set as an integral structure or a split structure. The processing of the switch triggering device with an integral structure is relatively simple, and a conductive layer can be provided on the outer surface of the triggering section 13 after processing is completed.

[0053] In this embodiment, a shock-absorbing and centering device is further included. The shock-absorbing and centering device is made of an elastic material and has a shock-absorbing part 31, a centering part 32, and a fluid conduction hole 33. One end of the shock-absorbing part 31 is connected to one end of the centering part 32. The centering part 32 has a cylindrical structure, and centering wings 34 are provided in the axial direction of the centering part 32, and the centering wings 34 extend towards the other end of the centering part 32. One end of the shock-absorbing part 31 or / and the other end of the centering part 32 are fixedly connected to one end of the intelligent opening tool. The fluid conduction hole 33 is communicated with the impact hole 14. Specifically, the fluid conduction hole 33 and the impact hole 14 are coaxially arranged.

[0054] During the process of the intelligent opening device being lowered into the well, when the shock-absorbing part is impacted by well fluid or the inner wall of the wellbore, due to the shock-absorbing effect of the shock-absorbing part, the vibration impact on the electronic components in the downhole intelligent opening tool is relatively small, which can well protect the electronic components in the downhole intelligent opening tool, ensure the normal function of the electronic components, improve the reliability of the downhole intelligent opening tool, and avoid the failure of the electronic components. At the same time, during the process of the downhole intelligent opening tool being lowered into the well, due to the function of the centering part, the downhole intelligent opening tool always maintains the middle position in the wellbore, the downhole intelligent opening tool will not be offset, the friction between the intelligent opening device and the inner wall of the casing is reduced, and the efficiency and reliability of lowering into the well are improved.

[0055] In this embodiment, the hardness of the shock-absorbing part 31 is less than the hardness of the centering part 32. The shock-absorbing part 31 with a smaller hardness ensures a good shock-absorbing effect; for the centering part 32 with a higher hardness, the centering part 32 will not produce a large deformation, ensuring the centering effect.

[0056] In this embodiment, a coil groove 35 for placing a signal transmission line and a wire groove 36 for controlling the passage of a control line are provided between the shock-absorbing part 31 and the centering part 32, and the control line is electrically connected to the trigger switch 21. By arranging the coil groove 11 and the wire groove 12 between the shock-absorbing part 31 and the centering part, since the shock-absorbing part 31 and the centering part are located at the front end of the downhole intelligent opening tool, arranging the coil groove 11 at the front end of the downhole intelligent opening tool ensures that the downhole intelligent opening tool can obtain relevant control signals earlier, improving the reliability of the control of the downhole intelligent opening tool; at the same time, due to the good shock-absorbing effect of the device main body, the coil in the downhole intelligent opening tool is better protected.

[0057] In this embodiment, four drainage grooves (not shown in the figure) are provided on the righting wing 34, and the drainage groove 37 extends upward along the axis of the righting portion 32. The multiple drainage grooves distributed on the righting wing can drain the well fluid, reduce the forward resistance of the downhole intelligent opening tool and make the downhole intelligent opening tool move forward more smoothly, while preventing the water pumped from the rear of the downhole intelligent opening tool from overturning the righting wing or knocking it off from the shock absorbing portion 31.

[0058] In this embodiment, the shock absorbing part 31 is in a truncated cone shape, and the diameter of the shock absorbing part 31 gradually decreases from one end of the shock absorbing part 31 to the other end of the shock absorbing part 31. By setting the shock absorbing part 31 in a truncated cone shape, the well fluid flows along the inclined surface of the truncated cone, reducing the resistance of the well fluid to the downhole intelligent opening tool, and improving the downhole speed of the downhole intelligent opening tool.

[0059] Specifically, Figure 2 and Figure 3 As shown, a schematic diagram of the first state of the downhole intelligent opening tool embodiment 1, that is, the downhole intelligent opening tool is in a non-working state, and the outer wall of the connection between the connecting section 11 and the sealing section 12 in this embodiment has an annular shear groove 16, and the annular shear groove 16 forms a weak connection with the impact hole 14. The connecting section 11 is fixedly connected to the other end of the switch through hole 22, and the trigger switch 21 is sealed and arranged in one end of the intelligent opening tool.

[0060] like Figure 4 and Figure 6 As shown, the second state schematic diagram of the downhole intelligent opening tool embodiment 1, that is, the downhole intelligent opening tool is in the working state, that is, the downhole intelligent opening tool is located at the wellhead, and when the impact hole 14 is subjected to hydraulic pressure by pumping, the connection is broken, the sealing section 12 and the trigger section 13 move together, and the trigger section 13 turns on the trigger switch 21. The positive and negative electrodes of the power supply are contacted and connected, the power supply is started, and the downhole tool is powered on after being put into the wellhead to avoid power loss during storage and transportation projects, and to ensure that the equipment has enough power to complete the work at the downhole working position; the sealing section and the downhole tool are slidably sealed to prevent leakage or circuit short circuit caused by contact between the formation fluid and the power supply.

[0061] In this embodiment, a coil for signal transmission is provided in the coil slot 35. When the trigger section 13 turns on the trigger switch 21, the coil receives the electronic signal emitted by the sleeve in the wellbore and performs identification and matching. If the identification is correct, the downhole intelligent opening tool is activated and the sleeve is opened.

[0062] Embodiment 1 of the shock absorbing and straightening device of the underground intelligent opening tool Figure 6 and Figure 7 , 4 discharge grooves 22, and the shock absorbing part 31 and the straightening part 32 are an integrated structure.

[0063] Refer to the structure of the second embodiment of the shock absorption and centralizing device for the downhole intelligent opening tool Figure 8 and Figure 9 , among which, there are 8 flow discharge grooves 22. Among them, the shock absorption part 31 and the centralizing part 32 are of an integral structure; a coil groove 35 for placing a signal transmission line and a wire groove 36 for controlling the passage of a wire are arranged between the shock absorption part 31 and the centralizing part 32.

[0064] Certainly, the present invention may also have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding changes and deformations should all fall within the protection scope of the appended claims of the present invention.

Claims

1. An underground switch triggering device, characterized in that: It includes a connecting section (11), a sealing section (12) and a triggering section (13) connected in sequence; The connecting section (11) is located in the direction of the intelligent opening tool going down the well. The connection with the sealing section (12) is a weak connection. The connecting section (11) is used for fixedly connecting with the intelligent opening tool. On the end face of the connecting section (11) away from the sealing section (12), there is an impact hole (14). The impact hole (14) is a blind hole, and the impact hole (14) passes through the connection and extends into the sealing section (12); The sealing section (12) is used for sliding and sealing connection with the intelligent opening tool; The surface of the triggering section (13) is made of a conductive material. When hydraulic pressure is applied in the impact hole (14), the connection breaks, and the sealing section (12) and the triggering section (13) move together; On the outer side wall of the connection between the connecting section (11) and the sealing section (12), there is an annular shear groove (16), and the annular shear groove (16) and the impact hole (14) form a weak connection; The outer diameter of the triggering section (13) is smaller than the outer diameter of the sealing section (12), and a limiting platform is formed at the junction of the triggering section (13) and the sealing section (12).

2. The downhole switch triggering device according to claim 1, characterized in that: On the outer side wall of the sealing section (12), there is an annular sealing groove, and a sealing ring (15) is arranged in the annular sealing groove. The sealing section (12) and the intelligent opening tool are in sliding and sealing connection through the sealing ring (15).

3. An intelligent downhole opening tool, characterized in that: It includes an intelligent opening tool and a downhole switch triggering device as described in claim 1 or 2; One end of the intelligent opening tool has a switch through hole (22) for sliding and sealing connection with the sealing section (12). Near one end of the switch through hole (22) inside one end of the intelligent opening tool, a trigger switch (21) is arranged. The connecting section (11) is fixedly connected to the other end of the switch through hole (22). When hydraulic pressure is applied in the impact hole (14), the connection breaks, and the sealing section (12) and the triggering section (13) move together. The triggering section (13) extends out of one end of the switch through hole (22) and conducts the trigger switch (21); It further includes a shock absorption and centering device. The shock absorption and centering device is made of an elastic material and has a shock absorption part (31), a centering part (32) and a fluid conduction through hole (33); One end of the shock absorption part (31) is connected to one end of the centering part (32); the centering part (32) has a cylindrical structure, and there is a centering wing (34) in the axial direction of the centering part (32), and the centering wing (34) extends towards the other end of the centering part (32); One end of the shock absorption part (31) or / and the other end of the centering part (32) is fixedly connected to one end of the intelligent opening tool; The fluid conduction through hole (33) is in communication with the impact hole (14); The hardness of the shock absorption part (31) is less than the hardness of the centering part (32); A coil groove (35) for placing a signal transmission line and a wire groove (36) for controlling the passage of a control wire are provided between the shock absorption part (31) and the alignment part (32), and the control wire is electrically connected to the trigger switch (21); A plurality of drainage grooves (37) are provided on the alignment wing (34), and the drainage grooves (37) extend along the axial direction of the alignment part (32).

4. The downhole intelligent opening tool according to claim 3, wherein: The shock absorption part (31) is frustum-shaped, and the diameter of the shock absorption part (31) gradually decreases from one end of the shock absorption part (31) to the other end of the shock absorption part (31).

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