A communication drill tool for drilling

Abstract

The present invention discloses a communication drill tool for drilling, which includes a communication cable, a rotary connector, a cable-passing drill pipe, a first cable storage short joint, and a downhole measurement tool. The rotary connector includes a rotor and a stator, and the cable connection end of the stator can always maintain a connection state with the communication cable, so that the communication cable can be connected to the ground control system. The first cable storage short joint is used for storing the communication cable. The communication cable led out by the rotor enters the first cable storage short joint along the cable-passing drill pipe. As the cable-passing drill pipe is continuously added, the winding shaft rotates to release the communication cable. The communication cable led out by the first cable storage short joint is connected to the downhole measurement tool, and the downhole measurement tool is connected to the drill bit. The communication drill tool for drilling of the present invention realizes a wired connection between the downhole measurement tool and the ground control system, greatly improves the data transmission rate, effectively avoids problems such as rate limitation and insufficient real-time performance of signal transmission, and improves the efficiency of downhole drilling work.

Description

Technical Field

[0001] The present invention relates to the technical field of downhole drilling equipment and its peripheral supporting facilities, and particularly relates to a communication drill tool for drilling. Background Art

[0002] Oil exploration refers to the process of using various exploration means to understand the underground geological conditions in order to search for and identify oil and gas resources, recognize the conditions for oil generation, oil storage, oil and gas migration, accumulation, preservation, etc., comprehensively evaluate the oil and gas prospects, determine the favorable areas for oil and gas accumulation, find the traps for oil and gas storage, and clarify the area of the oil and gas field, understand the situation of the oil and gas layers and the production capacity. The drilling method is an important means that must be adopted in oil and gas exploration. Drilling is used from the investigation and discovery of oil and gas reservoirs to the exploitation of oil and gas reservoirs. The drilling method is the method of using drilling to find oil and gas fields.

[0003] During the drilling process, downhole tools need to send drilling data to the ground control system in real time to guide subsequent drilling work. Under the current technical conditions, the real-time communication between downhole tools and the ground control system is mainly achieved by means of mud pulse, electromagnetic wave, etc. The data transmitted by the mud pulse method has a large lag and cannot achieve real-time data transmission; the electromagnetic wave transmission is greatly affected by the formation, and the transmission distance and signal strength are related to the geological conditions of the area where it is located, and the use limitations are relatively large. The maximum transmission rate that can be achieved by the above two methods is only at the bps (data transmission rate unit) level, and only a few digital signals such as well inclination and azimuth can be transmitted. A large amount of data related to the formation (such as measuring resistivity, sound velocity, neutron porosity, density, etc.) can only be stored in the logging while drilling equipment (LWD equipment), and the data is copied and analyzed after the drilling round is completed and the drill string is lifted. This easily leads to the inability to adjust the wellbore in real time and deviate from the actual optimal ore deposit position.

[0004] Therefore, how to change the current situation in the prior art where the communication data transmission rate between downhole tools and the ground control system is low and affects the drilling work efficiency has become an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of the present invention is to provide a communication drill tool for drilling to solve the above problems existing in the prior art, improve the communication data transmission rate between downhole tools and the ground control system, and thus improve the downhole drilling work efficiency.

[0006] To achieve the above purpose, the present invention provides the following solution: The present invention provides a communication drill tool for drilling, including:

[0007] A communication cable;

[0008] Rotary-through connector, the rotary-through connector includes a rotor and a stator, the rotor can be connected to the drilling top drive, the rotor is a hollow columnar structure, the rotor is rotatably connected to the stator, the stator is sleeved outside the rotor, the stator includes a cable connection end, the cable connection end can be connected to the ground control system, one end of the communication cable is connected to the rotor, and the end of the communication cable connected to the rotor is electrically connected to the cable connection end;

[0009] Cable-passing drill pipe, the rotor can be connected to the cable-passing drill pipe, the cable-passing drill pipe is a hollow columnar structure;

[0010] First cable storage sub-section, the first cable storage sub-section includes a guiding section and a storage section, the guiding section is connected to the storage section, the guiding section is connected to the cable-passing drill pipe, and the inner cavity of the guiding section is connected to the inner cavity of the cable-passing drill pipe. There is a first guiding hole on the side wall of the guiding section, and the first guiding hole is a through hole; the storage section includes a storage bin and a winding shaft, the winding shaft is rotatably arranged in the storage bin, and the end of the communication cable far from the rotary-through connector enters the storage bin along the outer wall of the cable-passing drill pipe and is wound around the winding shaft;

[0011] Downhole measurement tool, the communication cable extending out of the storage bin is electrically connected to the downhole measurement tool, the downhole measurement tool is connected to the first cable storage sub-section, and the end of the downhole measurement tool far from the first cable storage sub-section can be connected to the drill bit.

[0012] Preferably, there is a guiding groove on the outer wall of the cable-passing drill pipe that can accommodate the communication cable, the guiding groove is an open groove structure, the opening of the guiding groove is arranged in a direction away from the axis of the cable-passing drill pipe, and the depth of the guiding groove is greater than the outer diameter of the communication cable.

[0013] Preferably, the number of the cable-passing drill pipes is multiple, and the multiple cable-passing drill pipes are detachably connected; grooves that can accommodate the communication cable are provided at both ends of the cable-passing drill pipe, the grooves are annular structures, and the axial section of the grooves is L-shaped.

[0014] Preferably, the first guiding hole is gradually inclined in the direction from the inner wall to the outer wall of the storage bin towards the direction of the drill bit;

[0015] The number of the first guiding holes is multiple, and the multiple first guiding holes are circumferentially evenly distributed along the axis direction of the first cable storage sub-section.

[0016] Preferably, a cable guiding pulley is further arranged in the storage bin. The cable guiding pulley is rotatably arranged in the storage bin. The number of the cable guiding pulleys is two groups, and the two groups of cable guiding pulleys are respectively arranged at the inlet and the outlet of the communication cable.

[0017] Preferably, the rotation axis of the wire winding shaft is perpendicular to the axis of the first cable storage short section.

[0018] Preferably, the communication drill tool for drilling further includes a second cable storage short section which has the same structure as the first cable storage short section. The second cable storage short section is located between the rotary connector and the first cable storage short section. Cable-passing drill pipes are arranged between the rotary connector and the second cable storage short section and between the second cable storage short section and the first cable storage short section. The communication cable winds in the second cable storage short section and then enters the first cable storage short section.

[0019] Preferably, a return joint is connected to one end of the second cable storage short section close to the first cable storage short section. One end of the return joint away from the second cable storage short section can be connected to the cable-passing drill pipe, and the inner cavity of the second cable storage short section can be communicated with the inner cavity of the cable-passing drill pipe. A second guiding hole is formed in the side wall of the return joint, and the second guiding hole is a through hole.

[0020] Preferably, the second guiding hole is gradually inclined towards the direction of the rotary connector along the direction from the inner wall to the outer wall of the return joint;

[0021] The number of the second guiding holes is multiple groups, and the multiple groups of second guiding holes are evenly distributed at equal intervals along the axis direction of the return joint; in each group of the second guiding holes, the number of the second guiding holes is multiple, and the multiple second guiding holes are circumferentially evenly distributed around the axis of the return joint.

[0022] Preferably, the return joint is connected to the cable-passing drill pipe by a stabilizer, and the inner cavity of the return joint is communicated with the inner cavity of the cable-passing drill pipe by the stabilizer;

[0023] The number of the second cable storage short sections is multiple, and the second cable storage short sections, the return joints and the stabilizers are in one-to-one correspondence.

[0024] The present invention has achieved the following technical effects compared with the prior art: The communication drill tool for drilling of the present invention includes a communication cable, a rotary through connector, a cable-passing drill pipe, a first cable storage short joint, and a downhole measurement tool. Among them, the rotary through connector includes a rotor and a stator. The rotor can be connected to the drilling top drive. The rotor is a hollow columnar structure. The rotor is rotatably connected to the stator. The stator is sleeved outside the rotor. The stator includes a cable connection end, and the cable connection end can be connected to the ground control system. One end of the communication cable is connected to the rotor, and the end of the communication cable connected to the rotor is electrically connected to the cable connection end; the rotor can be connected to the cable-passing drill pipe, and the cable-passing drill pipe is a hollow columnar structure; the first cable storage short joint includes a guiding section and a storage section. The guiding section is connected to the storage section. The guiding section is connected to the cable-passing drill pipe, and the inner cavity of the guiding section is connected to the inner cavity of the cable-passing drill pipe. A first guiding hole is provided on the side wall of the guiding section, and the first guiding hole is a through hole; the storage section includes a storage bin and a winding shaft. The winding shaft is rotatably arranged in the storage bin. The end of the communication cable far from the rotary through connector enters the storage bin along the outer wall of the cable-passing drill pipe and is wound around the winding shaft; the communication cable extending out of the storage bin is electrically connected to the downhole measurement tool. The downhole measurement tool is connected to the first cable storage short joint, and the end of the downhole measurement tool far from the first cable storage short joint can be connected to the drill bit.

[0025] For the communication drill tool for drilling of the present invention, a rotary through connector is provided. The rotary through connector includes a rotor and a stator. The rotor is connected to the drilling top drive, thereby driving the drill tool to rotate. The rotor can fix the end of the communication cable. The stator is fixed and does not rotate, and the cable connection end of the stator can always be connected to the communication cable, so that the communication cable can be connected to the ground control system without affecting the normal drilling work of the drill tool; at the same time, the present invention provides a first cable storage short joint for storing the communication cable. The communication cable led out by the rotor enters the first cable storage short joint along the cable-passing drill pipe. As the drilling deepens and the cable-passing drill pipes are continuously added, the winding shaft rotates to release the communication cable. The communication cable led out by the first cable storage short joint is connected to the downhole measurement tool, and the downhole measurement tool is connected to the drill bit. It should be noted that the first cable storage short joint includes a guiding section and a storage section. The guiding section can lead out the drilling fluid entering the inner cavity of the guiding section through the first guiding hole, so that the drilling fluid passes through the gap between the storage section and the inner wall of the drill hole, realizing the normal circulation of the drilling fluid and at the same time preventing the drilling fluid from entering the inner cavity of the storage section. The communication drill tool for drilling of the present invention realizes the wired connection between the downhole measurement tool and the ground control system, greatly improves the data transmission rate, effectively avoids problems such as rate limitation and insufficient real-time performance of signal transmission, and improves the efficiency of downhole drilling work. Description of the Drawings

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0027] Figure 1 Structural schematic diagram of the communication drill tool for drilling of the present invention;

[0028] Figure 2 Structural schematic diagram in the embodiment of the communication drill tool for drilling of the present invention;

[0029] Figure 3 Structural schematic diagram of the rotary through connector of the communication drill tool for drilling of the present invention;

[0030] Figure 4 Structural schematic diagram of the first cable storage short joint of the communication drill tool for drilling of the present invention;

[0031] Figure 5 Structural schematic diagram of the cable - passing drill pipe of the communication drill tool for drilling of the present invention;

[0032] Figure 6 Structural schematic diagram of the return joint of the communication drill tool for drilling of the present invention;

[0033] Figure 7 Structural schematic diagram of the stabilizer of the communication drill tool for drilling of the present invention;

[0034] Figure 8 Structural schematic diagram of the drill bit of the communication drill tool for drilling of the present invention.

[0035] Among them, 1 is the communication cable, 2 is the rotary through connector, 201 is the rotor, 202 is the stator, 203 is the cable connection end, 3 is the cable - passing drill pipe, 301 is the guiding groove, 302 is the groove, 4 is the first cable storage short joint, 401 is the guiding section, 402 is the storage section, 403 is the first guiding hole, 404 is the storage bin, 405 is the winding shaft, 406 is the cable guiding pulley, 5 is the downhole measurement tool, 6 is the second cable storage short joint, 7 is the return joint, 701 is the second guiding hole, 8 is the stabilizer, and 9 is the drill bit. Detailed implementation manners

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0037] The object of the present invention is to provide a communication drill tool for drilling, so as to solve the problems existing in the above-mentioned prior art, improve the communication data transmission rate between downhole tools and the ground control system, and further improve the downhole drilling work efficiency.

[0038] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0039] Please refer to Figure 1-8 , wherein, Figure 1 is a schematic structural diagram of the communication drill tool for drilling of the present invention, Figure 2 is a schematic structural diagram in the embodiment of the communication drill tool for drilling of the present invention, Figure 3 is a schematic structural diagram of the rotary through connector of the communication drill tool for drilling of the present invention, Figure 4 is a schematic structural diagram of the first cable storage sub of the communication drill tool for drilling of the present invention, Figure 5 is a schematic structural diagram of the cable passing drill pipe of the communication drill tool for drilling of the present invention, Figure 6 is a schematic structural diagram of the return joint of the communication drill tool for drilling of the present invention, Figure 7 is a schematic structural diagram of the stabilizer of the communication drill tool for drilling of the present invention, Figure 8 is a schematic structural diagram of the drill bit of the communication drill tool for drilling of the present invention.

[0040] The present invention provides a communication drill tool 100a for drilling, which includes a communication cable 1, a rotary connector 2, a cable-through drill pipe 3, a first cable storage short joint 4, and a downhole measurement tool 5. Among them, the rotary connector 2 includes a rotor 201 and a stator 202. The rotor 201 can be connected to the drilling top drive. The rotor 201 is a hollow columnar structure. The rotor 201 is rotatably connected to the stator 202. The stator 202 is sleeved outside the rotor 201. The stator 202 includes a cable connection end 203, and the cable connection end 203 can be connected to the ground control system. One end of the communication cable 1 is connected to the rotor 201, and the end of the communication cable 1 connected to the rotor 201 is electrically connected to the cable connection end 203; the rotor 201 can be connected to the cable-through drill pipe 3, and the cable-through drill pipe 3 is a hollow columnar structure; the first cable storage short joint 4 includes a guiding section 401 and a storage section 402. The guiding section 401 is connected to the storage section 402. The guiding section 401 is connected to the cable-through drill pipe 3, and the inner cavity of the guiding section 401 is communicated with the inner cavity of the cable-through drill pipe 3. A first guiding hole 403 is provided on the side wall of the guiding section 401, and the first guiding hole 403 is a through hole; the storage section 402 includes a storage bin 404 and a winding shaft 405. The winding shaft 405 is rotatably arranged in the storage bin 404. One end of the communication cable 1 away from the rotary connector 2 enters the storage bin 404 along the outer wall of the cable-through drill pipe 3 and is wound around the winding shaft 405; the communication cable 1 extending out of the storage bin 404 is electrically connected to the downhole measurement tool 5. The downhole measurement tool 5 is connected to the first cable storage short joint 4, and one end of the downhole measurement tool 5 away from the first cable storage short joint 4 can be connected to the drill bit 9.

[0041] The communication drill tool 100a for drilling of the present invention is provided with a rotary through connector 2. The rotary through connector 2 includes a rotor 201 and a stator 202. The rotor 201 is connected to the top drive of the drilling rig, and thus drives the drill tool to rotate. The rotor 201 can fix the end of the communication cable 1. The stator 202 is fixed and does not rotate, and the cable connection end 203 of the stator 202 can always maintain a connection state with the communication cable 1, so that the communication cable 1 can be connected to the ground control system without affecting the normal drilling work of the drill tool. At the same time, the present invention is provided with a first cable storage short joint 4 for storing the communication cable 1. The communication cable 1 led out by the rotor 201 enters the first cable storage short joint 4 along the cable-passing drill pipe 3. As the drilling depth increases and the cable-passing drill pipes 3 are continuously added, the winding shaft 405 rotates to release the communication cable 1. The communication cable 1 led out by the first cable storage short joint 4 is connected to the downhole measurement tool 5, and the downhole measurement tool 5 is connected to the drill bit 9. It should be noted that the first cable storage short joint 4 includes a guiding section 401 and a storage section 402. The guiding section 401 can lead out the drilling fluid entering the inner cavity of the guiding section 401 through the first guiding hole 403, so that the drilling fluid passes through the gap between the storage section 402 and the inner wall of the drill hole, realizing the normal circulation of the drilling fluid and at the same time preventing the drilling fluid from entering the inner cavity of the storage section 402. The communication drill tool 100a of the present invention realizes the wired connection between the downhole measurement tool 5 and the ground control system, greatly improves the data transmission rate, effectively avoids problems such as rate limitation and insufficient real-time performance of signal transmission, and improves the downhole drilling work efficiency. Here it should be noted that in practical applications, the cable connection end 203 and the communication cable 1 can adopt structures such as carbon brushes to maintain the connection state, or a structure similar to a slip ring can be provided between the stator 202 and the rotor 201. In order to ensure the smooth rotation of the rotor 201 relative to the stator 202, bearings are provided between the stator 202 and the rotor 201 to improve the structural stability of the drill tool.

[0042] Wherein, the outer wall of the cable-passing drill pipe 3 has a guiding groove 301 capable of accommodating the communication cable 1. The guiding groove 301 is an open groove-like structure, and the opening of the guiding groove 301 is arranged in a direction away from the axis of the cable-passing drill pipe 3, which is convenient for fixing the communication cable 1. The depth of the guiding groove 301 is greater than the outer diameter of the communication cable 1, so that the side wall surface of the cable-passing drill pipe 3 is higher than the top of the communication cable 1, avoiding the continuous friction between the communication cable 1 and the inner wall of the drill hole during the operation of the drill tool. The guiding groove 301 can effectively protect the communication cable 1 and extend the service life of the communication cable 1.

[0043] In practical applications, the drilling depth is relatively deep, and a large number of cable-passing drill pipes 3 are required. Multiple cable-passing drill pipes 3 can be detachably connected, and cable-passing drill pipes 3 can be prepared using existing drill pipes. It should also be emphasized that grooves 302 capable of accommodating communication cables 1 are provided at both ends of the cable-passing drill pipe 3. The grooves 302 are annular structures, and the axial cross-section of the grooves 302 is L-shaped. During the actual operation process, the guiding grooves 301 between adjacent cable-passing drill pipes 3 cannot be strictly aligned. Therefore, grooves 302 are provided at both ends of the cable-passing drill pipe 3, that is, the diameter of the end of the cable-passing drill pipe 3 is smaller. The communication cable 1 can be radially arranged in the groove 302 for a certain distance and then enter the guiding groove 301 of the subsequent cable-passing drill pipe 3, reducing the actual operation difficulty and improving the working reliability of the drilling tool.

[0044] Specifically, the first guiding hole 403 is gradually inclined towards the direction of the drill bit 9 along the direction from the inner wall to the outer wall of the storage bin 404. The first guiding hole 403 is inclined, which better provides a guiding effect for the circulation of the drilling fluid and further improves the reliability of the drilling tool.

[0045] In this specific embodiment, the number of the first guiding holes 403 is multiple, and the multiple first guiding holes 403 are circumferentially and uniformly distributed along the axial direction of the first cable storage short joint 4, further improving the flow uniformity of the drilling fluid.

[0046] More specifically, cable guiding pulleys 406 are also provided in the storage bin 404. The cable guiding pulleys 406 are rotatably arranged in the storage bin 404. The number of the cable guiding pulleys 406 is two groups, and the number of each group of cable guiding pulleys 406 is two. The two groups of cable guiding pulleys 406 are respectively arranged at the inlet and outlet of the communication cable 1. The cable guiding pulleys 406 effectively avoid the bending of the communication cable 1 and at the same time provide a guiding effect for the communication cable 1 to enter and exit the first storage short joint, ensuring the smooth adjustment of the communication cable 1.

[0047] In other specific embodiments of the present invention, the rotation axis of the winding shaft 405 is perpendicular to the axis of the first cable storage short joint 4. The winding shaft 405 rotates to adjust the extension length of the communication cable 1. The inlet and outlet of the first cable storage short joint 4 are located at both ends of the winding shaft 405. The axis of the winding shaft 405 is perpendicular to the axis of the first cable storage short joint 4, avoiding the communication cable 1 applying other-direction torques to the winding shaft 405, reducing the rotation resistance of the winding shaft 405, and ensuring that the communication cable 1 can be smoothly deployed.

[0048] When the drilling depth continues to increase and the length of the communication cable 1 wound around the winding shaft 405 in the first cable storage short joint 4 cannot meet the drilling depth requirement, the communication drill tool 100a for drilling can also be provided with a second cable storage short joint 6. The second cable storage short joint 6 has the same structure as the first cable storage short joint 4. The second cable storage short joint 6 is located between the rotary connector 2 and the first cable storage short joint 4. Cable passing drill pipes 3 are provided between the rotary connector 2 and the second cable storage short joint 6 and between the second cable storage short joint 6 and the first cable storage short joint 4. After the communication cable 1 is wound in the second cable storage short joint 6, it enters the first cable storage short joint 4. By providing both the first cable storage short joint 4 and the second cable storage short joint 6, the ability of the drill tool to store the communication cable 1 is enhanced, and the adaptability of the drill tool is improved.

[0049] More specifically, a return joint 7 is connected to one end of the second cable storage short joint 6 close to the first cable storage short joint 4. One end of the return joint 7 away from the second cable storage short joint 6 can be connected to the cable passing drill pipe 3, and the inner cavity of the second cable storage short joint 6 can be connected to the inner cavity of the cable passing drill pipe 3. A second guiding hole 701 is provided on the side wall of the return joint 7. The second guiding hole 701 is a through hole. The return joint 7 is similar in function to the guiding section 401 and serves to guide the drilling fluid.

[0050] Similarly, the second guiding hole 701 is gradually inclined in the direction from the inner wall to the outer wall of the return joint 7 towards the direction of the rotary connector 2. The inclination of the second guiding hole 701 reduces the turning angle of the drilling fluid and improves the reliability of the drilling fluid flow.

[0051] In other embodiments of the present invention, the number of the second guiding holes 701 is multiple groups, and the multiple groups of second guiding holes 701 are evenly distributed at equal intervals along the axis of the return joint 7; in each group of the second guiding holes 701, the number of the second guiding holes 701 is multiple, and the multiple second guiding holes 701 are circumferentially evenly distributed around the axis of the return joint 7, improving the flow uniformity of the drilling fluid.

[0052] Furthermore, the return joint 7 is connected to the cable passing drill pipe 3 by a stabilizer 8, and the inner cavity of the return joint 7 is connected to the inner cavity of the cable passing drill pipe 3 by the stabilizer 8. At the location where the first cable storage short joint 4 and the second cable storage short joint 6 are provided, the flow direction of the drilling fluid changes. By providing the stabilizer 8, the impact of the change in the flow direction of the drilling fluid on the drill tool is further reduced, and the working stability of the drill tool is improved. The specific flow direction of the drilling fluid can be referred to the direction of the arrow in the accompanying drawings of the specification. Figure 2 in the direction of the arrow.

[0053] In actual application, the number of the second cable storage short joints 6 can be multiple. The number of the second cable storage short joints 6 can be determined according to the ability of the first cable storage short joint 4 and the second cable storage short joint 6 to store the communication cable 1. And the second cable storage short joints 6, the return joints 7 and the stabilizers 8 are in one-to-one correspondence, ensuring the smooth flow of the drilling fluid and improving the working reliability of the drill tool.

[0054] The communication drill tool 100a for drilling of the present invention has the following operation sequence during work: lower the drill bit 9, downhole measurement tool 5, first cable storage sub 4 and cable passing drill pipe 3 using a drilling elevator. When lowering the first cable storage sub 4 to the wellhead, it is necessary to pre-pull out the communication cable 1 of a corresponding length according to the length of the next cable passing drill pipe 3 to be connected. After the cable passing drill pipe 3 and the first cable storage sub 4 are connected, lay the communication cable 1 along the guiding groove 301 of the cable passing drill pipe 3. The connection of subsequent cable passing drill pipes 3 is the same. After connecting to the target length, connect the rotary connector 2 and connect it to the drilling top drive using the rotary connector 2. The drilling top drive drives the drill tool to rotate for drilling work, and the communication cable 1 can transmit the data measured by the downhole measurement tool 5 to the ground control system. The communication drill tool 100a for drilling of the present invention realizes the wired connection between the downhole measurement tool 5 and the ground control system, greatly improves the data transmission rate, and the transmission speed can be increased to the Mbps level. With the guarantee of the transmission rate at this level, in addition to being able to transmit the data generated by drilling tools such as MWD / LWD / RSS in real time, it can also guarantee the transmission of original data such as logging-while-drilling imaging logging that requires a large bandwidth, effectively avoiding problems such as rate limitation and insufficient real-time performance of signal transmission, and improving the efficiency of downhole drilling work.

[0055] Specific examples are applied in the present invention to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A communication drill tool for drilling, characterized in that, Comprising: Communication cable; Rotary connector, the rotary connector includes a rotor and a stator, the rotor can be connected to the drilling top drive, the rotor is a hollow columnar structure, the rotor is rotatably connected to the stator, the stator is sleeved outside the rotor, the stator includes a cable connection end, the cable connection end can be connected to the ground control system, one end of the communication cable is connected to the rotor, and the end of the communication cable connected to the rotor is electrically connected to the cable connection end; Cable-passing drill pipe, the rotor can be connected to the cable-passing drill pipe, the cable-passing drill pipe is a hollow columnar structure; First cable storage short section, the first cable storage short section includes a guiding section and a storage section, the guiding section is connected to the storage section, the guiding section is connected to the cable-passing drill pipe, and the inner cavity of the guiding section is connected to the inner cavity of the cable-passing drill pipe, the side wall of the guiding section has a first guiding hole, the first guiding hole is a through hole; the storage section includes a storage bin and a winding shaft, the winding shaft is rotatably arranged in the storage bin, one end of the communication cable away from the rotary connector enters the storage bin along the outer wall of the cable-passing drill pipe and is wound around the winding shaft; Downhole measurement tool, the communication cable extending out of the storage bin is electrically connected to the downhole measurement tool, the downhole measurement tool is connected to the first cable storage short section, and one end of the downhole measurement tool away from the first cable storage short section can be connected to the drill bit.

2. The communication drill tool for drilling according to claim 1, characterized in that: The outer wall of the cable-passing drill pipe has a guiding groove capable of accommodating the communication cable, the guiding groove is an open groove structure, the opening of the guiding groove is arranged in a direction away from the axis of the cable-passing drill pipe, and the depth of the guiding groove is greater than the outer diameter of the communication cable.

3. The communication drill tool for drilling according to claim 2, characterized in that: The number of the cable-passing drill pipes is multiple, and the multiple cable-passing drill pipes are detachably connected; both ends of the cable-passing drill pipe are provided with grooves capable of accommodating the communication cable, the grooves are annular structures, and the axial section of the grooves is L-shaped.

4. The communication drill tool for drilling according to claim 1, wherein: The first guiding hole is gradually inclined in the direction from the inner wall of the storage bin to the outer wall of the storage bin towards the drill bit; The number of the first guiding holes is multiple, and the multiple first guiding holes are circumferentially distributed along the axis direction of the first cable storage short section.

5. The communication drill tool for drilling according to claim 1, characterized in that: A cable guiding pulley is further arranged in the storage bin, the cable guiding pulley is rotatably arranged in the storage bin, the number of the cable guiding pulleys is two groups, and the two groups of cable guiding pulleys are respectively arranged at the inlet and outlet of the communication cable.

6. The communication drill tool for drilling according to claim 5, wherein: The rotation axis of the winding shaft is perpendicular to the axis of the first cable storage short section.

7. The communication drill tool for drilling according to any one of claims 1-6, characterized in that: It further includes a second cable storage short section, the second cable storage short section has the same structure as the first cable storage short section, the second cable storage short section is located between the rotary connector and the first cable storage short section, cable-passing drill pipes are arranged between the rotary connector and the second cable storage short section and between the second cable storage short section and the first cable storage short section, and the communication cable enters the first cable storage short section after being wound in the second cable storage short section.

8. The communication drill tool for drilling according to claim 7, characterized in that: One end of the second cable storage short section close to the first cable storage short section is connected with a return joint. One end of the return joint away from the second cable storage short section can be connected with the cable-passing drill pipe, and the inner cavity of the second cable storage short section can be communicated with the inner cavity of the cable-passing drill pipe. A second guiding hole is formed in the side wall of the return joint, and the second guiding hole is a through hole.

9. The communication drill tool for drilling according to claim 8, wherein: The second guiding hole is gradually inclined towards the direction of the rotary connector along the direction from the inner wall to the outer wall of the return joint; The number of the second guiding holes is multiple groups, and the multiple groups of second guiding holes are evenly distributed at equal intervals along the axial direction of the return joint; in each group of the second guiding holes, the number of the second guiding holes is multiple, and the multiple second guiding holes are circumferentially evenly distributed around the axis of the return joint.

10. The communication drill tool for drilling according to claim 8, wherein: The return joint is connected with the cable-passing drill pipe by a stabilizer, and the inner cavity of the return joint is communicated with the inner cavity of the cable-passing drill pipe by the stabilizer; The number of the second cable storage short sections is multiple, and the second cable storage short sections, the return joints and the stabilizers are in one-to-one correspondence.

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