CN117145461B - Wire-while-drilling communication connector, water braid and relay device and communication method - Google Patents
Wire-while-drilling communication connector, water braid and relay device and communication method Download PDFInfo
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- CN117145461B CN117145461B CN202310845122.XA CN202310845122A CN117145461B CN 117145461 B CN117145461 B CN 117145461B CN 202310845122 A CN202310845122 A CN 202310845122A CN 117145461 B CN117145461 B CN 117145461B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/028—Electrical or electro-magnetic connections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
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- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Computer Networks & Wireless Communication (AREA)
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- Mechanical Engineering (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
本发明提供一种随钻有线式通信接头、水辫和中继装置以及通信方法。其中通信接头包括接头和磁通信头，接头包括内设有舱体的杆体，磁通信头安装于舱体内；磁通信头包括外壳、电触柱、线圈组合、磁耦合通信电路板、储能电容和多芯通信电缆；通信接头相互连接组成集成化电力与数据传输的通道。水辫包括主轴、水辫壳和电滑环，其中主轴内贯设有通道并安装有通信接头，可与高速旋转的钻杆连接从而传输电力和数据。中继传输装置及通信方法中通过在钻杆和水辫内安装的通信接头相互连接传输电力和数据，经过中继装置放大、去噪、存储，并利用多芯通信电缆实现高效的电力和数据并行传输，从而实现随钻有线式井下通讯。
The invention provides a wired communication joint while drilling, a water braid, a relay device and a communication method. The communication joint includes a joint and a magnetic communication head. The joint includes a rod with a cabin inside, and the magnetic communication head is installed in the cabin. The magnetic communication head includes a shell, an electric contact column, a coil combination, a magnetic coupling communication circuit board, and an energy storage capacitor. and multi-core communication cables; communication connectors are interconnected to form integrated power and data transmission channels. The water braid includes a main shaft, a water braid housing and an electric slip ring. The main shaft has a channel running through it and is equipped with a communication joint, which can be connected to the high-speed rotating drill pipe to transmit power and data. In the relay transmission device and communication method, power and data are transmitted through communication joints installed in the drill pipe and water braid. The relay device amplifies, denoises, and stores the power and data, and uses multi-core communication cables to achieve efficient power and data. Parallel transmission to achieve wired downhole communication while drilling.
Description
Technical Field
The invention relates to the technical field of drilling, in particular to a wired communication joint while drilling, a water swivel, a relay device and a communication method.
Background
Downhole data transmission is a key technology in the fields of intelligent drilling and underground exploration, and can transmit surface control instructions from the surface to downhole instruments and simultaneously transmit measurement while drilling and downhole exploration data to the surface. However, with the increase of intelligent drilling parameters and the characteristics of multi-source, heterogeneous and massive underground detection data, the conventional underground data transmission technology is difficult to meet the real-time transmission requirement of big data while drilling, and the drilling data transmission technology becomes a difficult problem of neck clamping in intelligent drilling and underground detection engineering.
The existing underground data transmission mode mainly comprises wireless and wired modes, wherein the wireless transmission mode comprises the following steps: drilling fluid pulse transmission, electromagnetic wave transmission and sound wave transmission, wherein the drilling fluid pulse transmission speed is low, and strict requirements are imposed on drilling fluid components; the electromagnetic wave transmission high-frequency signal is severely attenuated, the low-frequency signal is interfered by background noise, and the transmission distance of the electromagnetic wave signal along the drill string is short; acoustic transmissions are susceptible to interference from ambient noise during drilling, while signals are weak and of low reliability. The wired transmission mode comprises the following steps: the cable drill rod with the cable at the center and the cable laying drill rod with the cable buried in the wall of the drill rod are characterized in that the cable drill rod is provided with a twisted pair cable, an optical fiber and a copper core cable at the center, and because the drill rod rotates at high speed in the drilling process, the common twisted pair cable and the optical fiber mode have the danger of twisting and breaking the cable, more single copper core cables with male and female connectors are used at present, electric power and data are transmitted through the single copper core cable, the data are transmitted by adopting an electric power carrier transmission mode, and the mode has the problems of difficult coding and decoding, signal attenuation and limited transmission distance; the cable laying drill rod with the cable buried in the wall of the drill rod is characterized in that the cable is independently grooved and buried in the wall of the drill rod, and the cable is connected at the joint through the page number structure, so that the processing cost is high, and the sealing and effective conduction of the joint are difficult to ensure. In general, in the existing underground data transmission technology, the wireless transmission mode has the problems of fast signal attenuation, interference by environmental noise and extremely slow transmission rate; the limited transmission mode has the problems of single transmission channel, low transmission rate, difficult signal attenuation relay and difficult data transmission coding and decoding.
Disclosure of Invention
In view of the above, the embodiment of the invention provides a wired communication joint while drilling, a water swivel, a relay device and a communication method, which aim to solve the problems of low data transmission efficiency and low transmission speed in the existing intelligent drilling and underground detection fields.
The embodiment of the invention provides a wired communication joint while drilling, which comprises a joint and a magnetic communication head, wherein the joint comprises a rod body, a cabin body is arranged in the rod body, and the magnetic communication head is arranged in the cabin body;
the magnetic communication head comprises a shell, an electric contact column, a coil combination, a magnetic coupling communication circuit board, an energy storage capacitor and a multi-core communication cable, wherein the shell is coaxially arranged in the cabin body, the electric contact column is annularly and convexly arranged on one end face of the shell, the coil combination is arranged in the shell and is close to the electric contact column, an annular space is formed in the center of the electric contact column, sealing glue is filled in the annular space, two ends of the magnetic coupling communication circuit board are respectively connected with the coil combination and the energy storage capacitor, the other end of the energy storage capacitor is connected with the multi-core communication cable, and the multi-core communication cable extends out of the rod body from the other end of the shell.
Further, a glue punching hole is formed in the side wall of the shell, and sealing waterproof glue is filled in the shell.
Further, be equipped with first spacing groove on the tip inner wall of the body of rod, be equipped with the location boss on the shell, the length of first spacing groove with the length looks adaptation of location boss, the location boss is located in the first spacing groove, and be in the body of rod is outer to be installed the apron in order to fix connect with the magnetic communication head, the apron middle part is equipped with the confession the through-hole that the electric contact post wears to establish.
Further, a second limit groove is formed in the inner wall of the end part of the rod body, a limit boss is arranged on the shell, the length of the second limit groove is longer than that of the limit boss, the limit boss is axially and movably arranged in the second limit groove, a cover plate is arranged outside the rod body to limit the magnetic communication head, and a through hole for the electric contact column to penetrate is formed in the middle of the cover plate;
the utility model discloses a multi-core communication cable, including the multicore communication cable, the magnetic communication head, the shell that the magnetic communication head is close to multicore communication cable one end overlaps and is equipped with the spring, the lateral wall of shell with all be equipped with spacing step on the inside wall of cabin, the both ends of spring are contradicted respectively on the spacing step.
The invention also provides a water braid comprising:
the main shaft is internally provided with a channel in a penetrating way, one end in the channel is provided with the wired communication joint while drilling, and the wired communication joint while drilling is used for being connected with a drill rod;
the water braid shell is sleeved on the outer side of the main shaft, the inner wall of the water braid shell is rotationally connected with the outer wall of the main shaft through a bearing, two ends of the water braid shell are respectively and hermetically connected with an end cover through a rear seat sleeved on the main shaft, and the end cover is arranged at one end, close to the wired communication joint while drilling, of the water braid shell; the method comprises the steps of,
the electric slip ring comprises a stator and a rotor, wherein the stator is fixed on the rear seat, and the rotor is connected with the multi-core communication cable of the while-drilling wired communication connector.
The present invention also provides a relay apparatus including:
the male communication connector is arranged at one end part of the inner cavity of the drill rod and is the wired communication connector while drilling;
the female communication connector is arranged at the other end part of the inner cavity of the drill rod, the female communication connector is the wired communication connector while drilling, the female communication connector and two multicore communication cables in the male communication connector are connected, so that when two adjacent drill rods are connected, the electric contact column of the male communication connector is tightly butted with the electric contact column of the female communication connector to realize power transmission, the coil combination of the male communication connector and the coil combination of the female communication connector are mutually coupled to realize data wireless transmission, and the magnetic coupling communication circuit board of the wired communication connector while drilling amplifies, denoises and stores data to realize relay processing; the method comprises the steps of,
the two ends of the sealing sleeve are respectively sleeved at the ends of the rod bodies of the male communication connector and the female communication connector on the two adjacent drill rods, and the sealing sleeve is arranged outside the rod bodies and close to one end of the cover plate.
Further, the outer side wall of the end part of the rod body is provided with at least one circle of sealing groove, a sealing ring is arranged in the sealing groove, and the sealing sleeve is sleeved on the outer side of the sealing ring.
Further, the male communication connector and the female communication connector are both fixed in the inner cavity of the drill rod through positioning check rings.
Further, the multi-core communication cable includes a multi-core channel to enable power transmission and data communication transmission.
The invention also provides a communication method based on the relay device, which comprises the following steps:
s1, a cable-laying drill rod is formed, and the relay device is arranged in a common drill rod for carrying out wired transmission of electric power and data;
s2, connecting cable laying drill rods, wherein in the drilling process, a plurality of cable laying drill rods are connected at the joint, the male communication connector and the electric contact columns on the female communication connector are in close contact with each other to carry out relay transmission of electric power, a special electric power transmission line in the multi-core communication cable is connected to the electric contact columns, a well electric power transmission channel is formed by relay connection of adjacent electric contact columns and electric power transmission inside the cable laying drill rods, meanwhile, the drill rod columns are another electric power transmission channel, and the two channels form an electric power circulation channel to realize electric power transmission supply between wells;
s3, underground data transmission is achieved through interconnection of cable-laying drill rods in the drilling process, the coil assemblies on the male communication connectors and the female communication connectors are close to each other, the energy storage capacitor supplies power, the magnetic coupling communication circuit board controls the coil assemblies to conduct data transmission, the magnetic coupling communication circuit board controls the coil assemblies to send data and process the data received by the coil assemblies, data are amplified, denoised and stored to achieve relay processing, relay transmission of the data is achieved between adjacent cable-laying drill rods through the communication assembly, and the same data in the cable-laying drill rods are transmitted through the multi-core communication cable.
The technical scheme provided by the embodiment of the invention has the beneficial effects that: according to the invention, the electric contact column, the coil combination, the magnetic coupling communication circuit board and the energy storage capacitor are integrally arranged in the magnetic communication head, then the multi-core communication cable comprising the independent electric power transmission and the data transmission core cable is utilized to realize efficient electric power and data parallel transmission, and when the multi-core communication cable is used, the wired communication joint while drilling can be arranged in a common rod body, and the joint of the two rod bodies can be connected through the two wired communication joints while drilling, so that the connection of drill rods is facilitated, the electric power and data transmission is realized, and the problems of low data transmission efficiency and low data transmission speed in the existing intelligent drilling and underground detection fields are solved.
Drawings
FIG. 1 is a schematic diagram of the installation of a wired communication sub while drilling, a water-break and a repeater device provided by the present invention;
fig. 2 is a schematic structural diagram of an embodiment of a relay device according to the present invention;
FIG. 3 is a schematic view of the structure of a first embodiment of a cable-while-drilling communication sub according to the present invention;
fig. 4 is a schematic structural diagram of a magnetic communication head in a first embodiment of a wired communication while drilling connector according to the present invention;
FIG. 5 is a schematic view of a second embodiment of a cable-while-drilling communication sub according to the present invention;
fig. 6 is a schematic structural diagram of a magnetic communication head in a second embodiment of the wired communication while drilling connector provided by the present invention;
FIG. 7 is a schematic view of an embodiment of a water braid provided by the present invention;
fig. 8 is a schematic diagram of an application scenario of the wired communication while drilling connector provided by the invention.
In the figure: 100. a wired communication joint while drilling; 1. a joint; 11. a rod body; 12. a cabin body; 13. a first limit groove; 14. the second limit groove; 15. a cover plate; 16. sealing the groove; 2. a magnetic communication head; 21. a housing; 211. punching a glue hole; 212. positioning the boss; 213. a limit boss; 22. an electric contact column; 23. a coil assembly; 24. a magnetic coupling communication circuit board; 25. an energy storage capacitor; 26. a multi-core communication cable; 3. a spring; 200. a relay device; 210. sealing sleeve; 220. a seal ring; 230. positioning a retainer ring; 300. a water braid; 310. a main shaft; 311. a channel; 320. a water braid shell; 330. a bearing; 340. a rear seat; 350. an end cap; 360. an electrical slip ring; 361. a stator; 362. a rotor; 370. a core protection pipe; 400. and (3) drilling rod.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1-6, fig. 1 and 2 are schematic views of installation of a wired communication while drilling connector according to the present invention. The embodiment of the invention provides a wired communication joint 100 while drilling, which comprises a joint 1 and a magnetic communication head 2, wherein the joint 1 comprises a rod body 11, a cabin 12 is arranged in the rod body 11, and the magnetic communication head 2 is arranged in the cabin 12; the magnetic communication head 2 comprises a shell 21, an electric contact column 22, a coil combination 23, a magnetic coupling communication circuit board 24, an energy storage capacitor 25 and a multi-core communication cable 26, wherein the shell 21 is coaxially installed in the cabin 12, the electric contact column 22 is annularly and convexly arranged on one end face of the shell 21, the coil combination 23 is arranged in the shell 21 and is close to the electric contact column 22, the coil combination 23 and the center of the electric contact column 22 form an annular space, sealing glue is filled in the annular space, two ends of the magnetic coupling communication circuit board 24 are respectively connected with the coil combination 23 and the energy storage capacitor 25, the other end of the energy storage capacitor 25 is connected with the multi-core communication cable 26, and the multi-core communication cable 26 extends out of the rod body 11 from the other end of the shell.
Through integrated setting up electric feeler post 22, coil combination 23, magnetic coupling communication circuit board 24 and energy storage capacitor 25 in magnetic communication head 2, then utilize multicore communication cable 26 including independent power transmission and data transmission core cable to realize high-efficient electric power and data parallel transmission, when using, the wired communication joint 100 while drilling can install in ordinary body of rod 11, also can connect through two wired communication joint 100 while drilling in the junction of two bodies of rod 11, the drilling rod 400 of being convenient for connects and realizes electric power and data transmission, solve current intelligent well drilling and underground detection field data transmission inefficiency, the slow problem of transmission rate.
After the drill rod 400 is connected through the wired communication joint 100 while drilling, two electric contact columns 22 are mutually extruded and contacted at the joint of the wired communication joint 100 while drilling, continuous power transmission is carried out through up-down contact of the electric contact columns 22, wireless transmission of underground data among the drill rod 400 is realized by adopting a data wireless magnetic coupling transmission module consisting of an energy storage capacitor 25, a magnetic coupling communication circuit board 24 and a coil combination 23, the magnetic coupling communication circuit board 24 can control high-speed relay transmission of multi-source data, wireless relay is completed by adopting the wired communication joint 100 while drilling, and finally, underground wired relay transmission with a large data volume is realized, so that the bottleneck of the conventional underground data transmission is broken through, and the wireless relay has good application prospect.
It should be noted that the drill pipe may be in any number of forms, and the wired communication while drilling joint 100 of the present application may be installed in a particular drill pipe or may be installed inside a drill pipe joint, where the particular drill pipe and drill pipe joint need only be machined with space at the end of the drill pipe for the wired communication while drilling joint to be installed. When the underground wired relay transmission system is actually used, when the common drill rod without the installation space is used, only the drill rod joint is added at the joint of the plurality of sections of common drill rods, the plurality of sections of common drill rods are connected by the drill rod joint, and the wired communication joint 100 while drilling is installed in the drill rod joint, so that the underground wired relay transmission with large data volume can be realized. The wired communication joint while drilling is a rod joint with an inner space for installing the wired communication joint while drilling 100, so that the machining cost can be saved, the application range of the wired communication joint while drilling can be increased, a special drill rod is not required to be used for installing the wired communication joint while drilling 100, each common drill rod is not required to be specially machined, the connection between the common drill rods is adopted in the middle of fig. 8, the wired communication joints while drilling 100 at two ends are installed in the rod joint, and the rod joint and the common drill rod are directly connected through threads.
Specifically, the electrical contact column 22 is annular, the middle part is hollow, and the surface is provided with a convex square, so that the two electrical contact columns 22 which are in butt joint can be effectively connected with each other, and meanwhile, the abrasion is reduced, and the transmission of electric power is realized.
Further, referring to fig. 3 and 5, a glue hole 211 is formed on the side wall of the housing 21, and a waterproof sealant is filled in the housing 21. Through seting up the hole 211 of gluing on the shell 21 lateral wall, be convenient for with electric feeler post 22, coil combination 23, magnetic coupling communication circuit board 24, energy storage capacitor 25 and multicore communication cable 26 installation back, pack sealed waterproof glue in shell 21 to the magnetic coupling communication circuit board 24 and the energy storage capacitor 25 in the protection and the fixed shell 21 prevent to be gone into water in the shell 21 when the operation of underground with boring wired communication joint 100, can improve the life of magnetic communication head 2.
Specifically, in the first embodiment, referring to fig. 3 and 4, a first limiting groove 13 is formed in an inner wall of an end portion of the rod 11, a positioning boss 212 is formed on the housing 21, a length of the first limiting groove 13 is adapted to a length of the positioning boss 212, the positioning boss 212 is disposed in the first limiting groove 13, a cover plate 15 is mounted outside the rod 11 to fix the connector 1 and the magnetic communication head 2, and a through hole for the electric contact column 22 to pass is formed in a middle portion of the cover plate 15.
The positioning boss 212 is arranged on the shell 21, the first limiting groove 13 is arranged on the inner wall of the rod body 11, the positioning boss 212 is arranged in the first limiting groove 13, the shell 21 can be axially positioned in the rod body 11, and the shell 21 is tightly locked through the cover plate 15.
Specifically, in the second embodiment, referring to fig. 4 and 5, a second limiting groove 14 is formed on an inner wall of an end portion of the rod 11, a limiting boss 213 is formed on the housing 21, a length of the second limiting groove 14 is longer than a length of the limiting boss 213, the limiting boss 213 is axially movably disposed in the second limiting groove 14, a cover plate 15 is mounted outside the rod 11 to limit the magnetic communication head 2, and a through hole for the electric contact column 22 to pass through is formed in a middle portion of the cover plate 15; the magnetic communication head 2 is close to the shell 21 of multicore communication cable 26 one end is gone up the cover and is equipped with spring 3, the lateral wall of shell 21 with all be equipped with spacing step on the inside wall of cabin body 12, the both ends of spring 3 are contradicted respectively on the spacing step.
Through setting up spacing boss 213 on shell 21 to set up second spacing groove 14 on the body of rod 11 inner wall, spacing boss 213 locates in the second spacing groove 14, can be with shell 21 axial positioning in body of rod 11, set up the length of second spacing groove 14 and be longer than the length of spacing boss 213, make spacing boss 213 can be in the axial motion of second spacing groove 14. By providing the spring 3 at the other end of the housing 21, the housing 21 is facilitated to have a tendency to move axially under the elastic force of the spring 3, and when the two wired communication connectors while drilling 100 are connected, the wired communication connectors while drilling 100 can be tightly crimped and can be appropriately compensated for displacement up and down.
Referring to fig. 1 and 2, the present invention further provides a relay device 200, which includes a male communication connector, a female communication connector and a sealing sleeve 210, where the male communication connector is installed at one end of an inner cavity of a drill pipe 400, and the male communication connector is the wired communication connector while drilling 100 described in the first embodiment; the female communication connector is installed at the other end of the inner cavity of the drill rod 400, the female communication connector is the wired communication connector while drilling 100 in the second embodiment, the female communication connector is connected with two multicore communication cables 26 in the male communication connector, so that when two adjacent drill rods 400 are connected, the electric contact column 22 of the male communication connector is tightly abutted with the electric contact column 22 of the female communication connector to realize power transmission, the coil combination 23 of the male communication connector is mutually coupled with the coil combination 23 of the female communication connector to realize data wireless transmission, and the magnetic coupling communication circuit board 24 of the wired communication connector while drilling 100 amplifies, denoises and stores data to realize relay processing; the two ends of the sealing sleeve 210 are respectively sleeved at the ends of the rod body 11 of the male communication connector and the female communication connector on the two adjacent drill rods 400, and the sealing sleeve 210 is installed at one end, outside the rod body 11, close to the cover plate 15.
Through installing public communication joint and female communication joint respectively at the both ends of a ordinary drilling rod 400, be convenient for connect gradually many drilling rods 400 each other to increase the length of drilling rod 400, and through the drilling rod 400 of boring wired communication joint 100 interconnect, can realize big data volume underground wired relay transmission, break through current underground data transmission bottleneck, can realize efficient electric power and data parallel transmission simultaneously.
Here, the multi-core communication cable 26 in the male communication connector and the female communication connector installed at two ends of the same drill rod 400 may be an integrally formed multi-channel 311 cable, or may be formed by connecting each other. By arranging the wired communication connectors while drilling 100 in the first embodiment and the second embodiment at two ends of the drill pipe 400 respectively, it is helpful to make one of the two wired communication connectors while drilling 100 connected with each other, wherein the other one of the two wired communication connectors 2 is fixedly connected with the rod 11, and the other one of the two wired communication connectors 2 is movably connected with the rod 11 in an axial direction, so that the electric contact columns 22 of the two wired communication connectors 2 can be in close contact by using the elastic force of the spring 3.
Further, at least one ring of sealing groove 16 is provided on the outer side wall of the end portion of the rod body 11, a sealing ring 220 is provided in the sealing groove 16, and the sealing sleeve 210 is sleeved on the outer side of the sealing ring 220. By providing the seal ring 220 between the seal cartridge 210 and the rod 11, the sealing performance can be improved, and water can be prevented from entering the cabin 12 during downhole operation.
Specifically, in this embodiment, the male communication connector and the female communication connector are both fixed in the inner cavity of the drill pipe 400 by the positioning retainer ring 230.
Specifically, the multi-core communication cable 26 includes a multi-core channel 311 to enable power transmission and data communication transmission. The multi-core channel 311 cable includes separate and in-store transmission and data transmission core cables, enabling efficient power and data transmission.
The invention also provides a communication method based on the relay device 200, which comprises the following steps:
s1, a cable-laying drill rod 400 is formed, wherein the relay device 200 is installed in a common drill rod 400 by the cable-laying drill rod 400, and the cable transmission of power and data is performed;
specifically, the positioning check rings 230 are installed on the joint 1 parts at two ends of the common drill rod 400, the male communication joint and the female communication joint are installed on the positioning check rings 230 at two ends, and two magnetic communication heads 2 in the same drill rod 400 are connected in the drill rod 400 through the multi-core communication cable 26.
S2, connecting the cable laying drill rods 400, wherein in the drilling process, the cable laying drill rods 400 are connected at the connection part, the electric contact columns 22 on the male communication connector and the female communication connector are in close contact with each other to carry out relay transmission of power, a special power transmission line in the multi-core communication cable 26 is connected to the electric contact columns 22, a well power transmission channel 311 is formed by relay connection of adjacent electric contact columns 22 and power transmission inside the cable laying drill rods 400, meanwhile, the drill rods 400 are connected with each other through another power transmission channel 311, and the two channels 311 form a power circulation channel 311 to realize power transmission supply between wells;
s3, underground data transmission is achieved through interconnection of the cable-applied drill rods 400 in the drilling process, the coil assemblies 23 on the male communication connectors and the female communication connectors are close to each other, the energy storage capacitor 25 supplies power, the magnetic coupling communication circuit board 24 controls the coil assemblies 23 to conduct data transmission, the magnetic coupling communication circuit board 24 controls the coil assemblies 23 to send data and process the data received by the coil assemblies 23, data are amplified, denoised and stored to achieve relay processing, relay transmission of the data is achieved between adjacent cable-applied drill rods 400 through the communication assembly, and the same data in the cable-applied drill rods 400 are transmitted through the multi-core communication cable 26.
Referring to fig. 7, the present invention also provides a water braid 300 including a main shaft 310, a water braid case 320, and an electrical slip ring 360. A channel 311 is penetrated in the main shaft 310, one end in the channel 311 is provided with the wired communication while drilling joint 100 as described above, and the wired communication while drilling joint 100 is used for being connected with a drill rod 400; the water braid shell 320 is sleeved on the outer side of the main shaft 310, the inner wall of the water braid shell 320 is rotationally connected with the outer wall of the main shaft 310 through a bearing 330, two ends of the water braid shell 320 are respectively and hermetically connected with an end cover 350 through a rear seat 340 sleeved on the main shaft 310, and the end cover 350 is arranged at one end, close to the while-drilling wired communication joint 100, of the water braid shell 320; the electrical slip ring 360 includes a stator 361 and a rotor 362, the stator 361 being secured to the back 340, the rotor 362 being coupled to the multi-conductor communication cable 26 of the while-drilling wired communication sub 100.
By providing a wired communication while drilling joint 100 in the main shaft 310 in connection with the drill pipe 400, a high speed transmission channel 311 from the bottom of the well to the surface can be established, and the multi-channel 311 can transmit power and large data signals during the rotation of the power head.
Specifically, the main shaft 310 is further provided with a core protection tube 370 outside the multi-core communication cable 26. The sealing structure between the main shaft 310 and the water braid 320, the water braid 320 and the end cap 350 and the rear seat 340 will not be described in detail,
the main shaft 310 is connected with the external drill rod 400 through the wired communication joint while drilling 100, the wired communication joint while drilling 100 is installed at the end of the main shaft 310 and the end of the drill rod 400, and the main shaft 310 rotates together with the drill rod 400 during drilling. The electrical contact posts 22 in the two wired communication connectors while drilling 100 are tightly connected, the two coil assemblies 23 work, and signals are transmitted through the wireless electromagnetic induction principle, so that the function of multichannel 311 transmission is realized.
It should be noted that, in the present application, the signal transmission of the water meter 300 is not limited to the electrical slip ring 360, and the signal can be transmitted from the faucet to the ground device by other high-frequency wireless transmission methods, which will not be repeated herein.
The invention has the following advantages:
firstly, the device integrating motor transmission and magnetic communication wireless data transmission is utilized to go to the wired transmission mode of the multi-core communication cable 26, the difficult problems of underground power supply and mass data transmission are overcome, the magnetic coupling communication circuit board is adopted to carry out coding and decoding and relay transmission on mass data, underground wired relay transmission with large data volume can be realized, mass data generated by intelligent drilling and underground detection can be transmitted to the ground in real time, and the guarantee is provided for engineering implementation decision-making and emergency rescue. Meanwhile, the device is processed and installed on the basis of the common drill rod 400, and if a joint 1 transmission mode is adopted, the communication joint 1 is only needed to be added in drilling operation, so that the large-data-volume communication function can be realized.
Secondly, the invention can realize real-time transmission of underground mass data, has high transmission speed, and can overcome the problems of weak signals, mutual interference and low transmission speed in the traditional mode; simple processing and low cost.
Thirdly, a large number of data transfer and storage functions of the multichannel 311 are developed on the function of conveying drilling fluid by the traditional water swivel, and in the multichannel 311 data transmission channel 311 formed by the wired communication connector 100 while drilling and the electric slip ring 360, power transmission and large data volume data transmission can be realized, so that the bottleneck that the transmission speed is low and the data volume is small due to the fact that the traditional single channel 311 transmits power and signals is overcome; meanwhile, the water swivel 300 is connected with the drill rod 400 provided with the corresponding wired communication joint 100 while drilling, so that a multi-channel 311 large-data-volume transmission channel 311 from underground to ground can be opened up, the problem of data transmission in the existing drilling field is solved, and the method can provide possibility for intelligent drilling and underground multi-parameter detection, high-precision detection and real-time detection.
In this document, terms such as front, rear, upper, lower, etc. are defined with respect to the positions of the components in the drawings and with respect to each other, for clarity and convenience in expressing the technical solution. It should be understood that the use of such orientation terms should not limit the scope of the protection sought herein.
The embodiments described above and features of the embodiments herein may be combined with each other without conflict.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (10)
1. The wired communication joint while drilling is characterized by comprising a joint and a magnetic communication head, wherein the joint comprises a rod body, a cabin body is arranged in the rod body, and the magnetic communication head is arranged in the cabin body;
the magnetic communication head comprises a shell, an electric contact column, a coil combination, a magnetic coupling communication circuit board, an energy storage capacitor and a multi-core communication cable, wherein the shell is coaxially arranged in the cabin body, the electric contact column is annularly and convexly arranged on one end face of the shell, the coil combination is arranged in the shell and is close to the electric contact column, an annular space is formed between the coil combination and the center of the electric contact column, sealing glue is filled in the annular space, two ends of the magnetic coupling communication circuit board are respectively connected with the coil combination and the energy storage capacitor, the energy storage capacitor is used for supplying power for the coil combination, the other end of the energy storage capacitor is connected with the multi-core communication cable, and the multi-core communication cable extends out of the rod body from the other end of the shell;
the multi-core communication cable comprises an independent power transmission core cable and a data transmission core cable, and is used for realizing power transmission and data parallel transmission;
the magnetic coupling communication circuit board is used for controlling the coil combination to transmit data, and controlling the coil combination to transmit data and processing the data received by the coil combination so as to perform relay processing of amplifying, denoising and storing the data.
2. The wired communication while drilling connector of claim 1, wherein the housing side wall is provided with a glue hole, and the housing is filled with a waterproof sealant.
3. The wired communication while drilling connector of claim 1, wherein a first limit groove is formed in an inner wall of an end portion of the rod body, a positioning boss is arranged on the housing, the length of the first limit groove is matched with that of the positioning boss, the positioning boss is arranged in the first limit groove, a cover plate is arranged outside the rod body to fix the connector and the communication head, and a through hole for the electric contact column to penetrate is formed in the middle of the cover plate.
4. The wired communication while drilling connector of claim 1, wherein a second limit groove is formed in the inner wall of the end part of the rod body, a limit boss is arranged on the shell, the length of the second limit groove is longer than that of the limit boss, the limit boss is axially and movably arranged in the second limit groove, a cover plate is arranged outside the rod body to limit the magnetic communication head, and a through hole for the electric contact column to penetrate is formed in the middle of the cover plate;
the utility model discloses a multi-core communication cable, including the multicore communication cable, the magnetic communication head, the shell that the magnetic communication head is close to multicore communication cable one end overlaps and is equipped with the spring, the lateral wall of shell with all be equipped with spacing step on the inside wall of cabin, the both ends of spring are contradicted respectively on the spacing step.
5. A water strand, comprising:
a main shaft, wherein a channel is penetrated in the main shaft, one end in the channel is provided with the wired communication joint while drilling according to any one of claims 1-4, and the wired communication joint while drilling is used for being connected with a drill rod;
the water braid shell is sleeved on the outer side of the main shaft, the inner wall of the water braid shell is rotationally connected with the outer wall of the main shaft through a bearing, two ends of the water braid shell are respectively and hermetically connected with an end cover through a rear seat sleeved on the main shaft, and the end cover is arranged at one end, close to the wired communication joint while drilling, of the water braid shell; the method comprises the steps of,
the electric slip ring comprises a stator and a rotor, wherein the stator is fixed on the rear seat, and the rotor is connected with the multi-core communication cable of the while-drilling wired communication connector.
6. A relay device, comprising:
a male communication connector, which is arranged at one end part of the inner cavity of the drill rod, wherein the male communication connector is the wired communication connector while drilling according to claim 3;
the female communication connector is arranged at the other end part of the inner cavity of the drill rod, the female communication connector is the wired communication connector while drilling according to claim 4, the female communication connector is connected with two multicore communication cables in the male communication connector, so that when two adjacent drill rods are connected, the electric contact column of the male communication connector is tightly butted with the electric contact column of the female communication connector to realize power transmission, the coil combination of the male communication connector is mutually coupled with the coil combination of the female communication connector to realize data wireless transmission, and the magnetic coupling communication circuit board of the wired communication connector while drilling amplifies, denoises and stores data to realize relay processing; the method comprises the steps of,
the two ends of the sealing sleeve are respectively sleeved at the ends of the rod bodies of the male communication connector and the female communication connector on the two adjacent drill rods, and the sealing sleeve is arranged outside the rod bodies and close to one end of the cover plate.
7. The relay device according to claim 6, wherein at least one circle of sealing groove is arranged on the outer side wall of the end part of the rod body, a sealing ring is arranged in the sealing groove, and the sealing sleeve is sleeved on the outer side of the sealing ring.
8. The repeater device of claim 6, wherein the male communication connector and the female communication connector are each secured in the drill pipe cavity by a retaining collar.
9. The relay device of claim 6, wherein the multi-core communication cable comprises a multi-core channel to enable power transmission and data communication transmission.
10. A communication method, characterized by being based on a relay device according to any of claims 6-9, comprising the steps of:
s1, a cable-laying drill rod is formed, and the relay device is arranged in a common drill rod for carrying out wired transmission of electric power and data;
s2, connecting cable laying drill rods, wherein in the drilling process, a plurality of cable laying drill rods are connected at the joint, the male communication connector and the electric contact columns on the female communication connector are in close contact with each other to carry out relay transmission of electric power, a special electric power transmission line in the multi-core communication cable is connected to the electric contact columns, a well electric power transmission channel is formed by relay connection of adjacent electric contact columns and electric power transmission inside the cable laying drill rods, meanwhile, the drill rod columns are another electric power transmission channel, and the two channels form an electric power circulation channel to realize electric power transmission supply between wells;
s3, underground data transmission is achieved through interconnection of cable-laying drill rods in the drilling process, the coil assemblies on the male communication connectors and the female communication connectors are close to each other, the energy storage capacitor supplies power, the magnetic coupling communication circuit board controls the coil assemblies to conduct data transmission, the magnetic coupling communication circuit board controls the coil assemblies to send data and process the data received by the coil assemblies, data are amplified, denoised and stored to achieve relay processing, relay transmission of the data is achieved between adjacent cable-laying drill rods through the communication assembly, and the same data in the cable-laying drill rods are transmitted through the multi-core communication cable.
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| CN202310845122.XA CN117145461B (en) | 2023-07-10 | 2023-07-10 | Wire-while-drilling communication connector, water braid and relay device and communication method |
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| CN202310845122.XA CN117145461B (en) | 2023-07-10 | 2023-07-10 | Wire-while-drilling communication connector, water braid and relay device and communication method |
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