CN111827985A - Near-bit while-drilling device - Google Patents
Near-bit while-drilling device Download PDFInfo
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- CN111827985A CN111827985A CN202010913436.5A CN202010913436A CN111827985A CN 111827985 A CN111827985 A CN 111827985A CN 202010913436 A CN202010913436 A CN 202010913436A CN 111827985 A CN111827985 A CN 111827985A
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- receiving
- transmitting
- communicator
- control module
- pole double
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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 DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B17/021—Devices for subsurface connecting or disconnecting by rotation
Abstract
The invention relates to a near-bit while-drilling device. The device's logging while drilling instrument's upper end and drilling rod are connected, the fixed coaxial transmission nipple joint that is provided with between drill bit and the screw rod drilling tool, the fixed coaxial receiving nipple joint that is provided with between logging while drilling instrument and the screw rod drilling tool, transmission nipple joint and receiving nipple joint all can switch over the ground transmission or received signal, first communicator sets up on receiving the nipple joint, the second communicator sets up on the transmission nipple joint, the receiving nipple joint communicates with logging while drilling instrument and second communicator respectively through first communicator mutually, the transmission nipple joint communicates with logging while drilling instrument and first communicator respectively through the second communicator. The invention improves the efficiency of the near-bit wireless short transmission.
Description
Technical Field
The invention belongs to the technical field of geological survey, and particularly relates to a near-bit while-drilling device.
Background
As the development of the oil field enters the later stage, the developed oil layer is thinner and thinner, and the difficulty is increased gradually. In order to maintain a high oil layer drilling rate in a thin oil layer, a near-bit drilling device is necessary to provide well hole directional data and geological parameters of well hole rock fixation for a geological steering system so that a drilled well hole track meets the engineering design requirements.
Among the prior art, nearly drill bit is along with boring the device and is included the logging instrument along with boring, screw rod drilling tool and the drill bit that top-down coaxial setting in proper order, the upper end and the drilling rod of the logging instrument along with boring are connected, it is provided with coaxial transmission nipple to fix between drill bit and the screw rod drilling tool, it is provided with coaxial receiving nipple to follow between logging instrument along with boring and the screw rod drilling tool, transmission nipple firing signal, receive nipple received signal, and transmit for the logging instrument along with boring after with signal processing, along with boring the logging instrument with boring transmitted received signal for pressure sensing unit on the well.
In carrying out the present invention, the applicant has found that at least the following disadvantages exist in the prior art:
in nearly drill bit instrument while drilling, because the transmission nipple joint sets up between drill bit and screw rod drilling tool, the receipt nipple joint sets up between logging while drilling instrument and screw rod drilling tool, and the screw rod drilling tool is unable to cross the line, consequently, the signal transmission between transmission nipple joint and the receipt section can only pass through the wireless mode of sending of mud communication, the signal that will transmit the nipple joint transmission crosses the screw rod drilling tool and transmits to the receipt nipple joint, pass through modes such as mud communication by the receipt nipple joint again and reach nearly drill bit instrument while drilling, lead to the efficiency of signal transmission on the low side.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a near-bit while-drilling device, which aims to solve the technical problem that the signal transmission efficiency is low in the use process of the near-bit while-drilling device.
The technical scheme of the invention is as follows:
a near-bit while-drilling device comprises a logging-while-drilling instrument, a screw drilling tool and a bit which are coaxially arranged from top to bottom in sequence, wherein the upper end of the logging-while-drilling instrument is connected with a drill rod, a coaxial transmitting short section is fixedly arranged between the bit and the screw drilling tool, and a coaxial receiving short section is fixedly arranged between the logging-while-drilling instrument and the screw drilling tool;
the device further comprises a first communicator and a second communicator, the first communicator is arranged on the receiving short section, the second communicator is arranged on the transmitting short section, the receiving short section is communicated with the logging-while-drilling instrument and the second communicator through the first communicator, and the transmitting short section is communicated with the logging-while-drilling instrument and the first communicator through the second communicator.
Furthermore, a first annular magnet wound with a first spiral coil is arranged on the outer wall of the receiving short section, and the first spiral coil is the first communicator;
be equipped with the receipt electron storehouse in the nipple joint of receipt, be equipped with first receipt transmission control module group and first single-pole double-throw relay in the receipt electron storehouse, first receipt transmission control module group has transmission output, receipt input and control end, first single-pole double-throw relay has stationary contact, first movable contact, second movable contact and control end, wherein:
the fixed contact of the first single-pole double-throw relay is connected with one end of the first spiral coil, the other end of the first spiral coil is grounded, the first movable contact of the first single-pole double-throw relay is connected with the transmitting output end of the first receiving and transmitting control module, the second movable contact of the first single-pole double-throw relay is connected with the receiving input end of the first receiving and transmitting control module, and the control end of the first single-pole double-throw relay is connected with the control end of the first receiving and transmitting control module.
Still further, the first receiving and transmitting control module comprises a first controller, a first coding and transmitting circuit, a first decoding and receiving circuit and a first energy storage battery, wherein:
the first controller is respectively connected with the input end of the first coding transmitting circuit, the output end of the first decoding receiving circuit and the control end of the first single-pole double-throw relay, the output end of the first coding transmitting circuit is the transmitting output end of the first receiving transmitting control module, the input end of the first decoding receiving circuit is the receiving input end of the first receiving transmitting control module, and a first energy storage battery is connected with the first controller in a power supply mode.
Furthermore, a first annular groove is formed in the outer wall of the receiving nipple, the first annular magnet is arranged in the first annular groove, and a first cover plate is arranged outside the first annular groove.
Furthermore, a second annular magnet wound with a second spiral coil is arranged on the outer wall of the transmitting nipple, and the second spiral coil is the second communicator;
be equipped with transmission electron storehouse in the transmission nipple joint, be equipped with second in the transmission electron storehouse and receive transmission control module group and second single-pole double-throw relay, second is received transmission control module group and is had transmission output, receiving input and control end, second single-pole double-throw relay has stationary contact, first movable contact, second movable contact and control end, wherein:
the fixed contact of the second single-pole double-throw relay is connected with one end of the second spiral coil, the other end of the second spiral coil is grounded, the first movable contact of the second single-pole double-throw relay is connected with the transmitting output end of the second receiving and transmitting control module, the second movable contact of the second single-pole double-throw relay is connected with the receiving input end of the second receiving and transmitting control module, and the control end of the second single-pole double-throw relay is connected with the control end of the second receiving and transmitting control module.
Still further, the second receiving and transmitting control module comprises a second controller, a second coding and transmitting circuit, a second decoding and receiving circuit and a second energy storage battery, wherein:
the second controller is respectively connected with the input end of the second coding transmitting circuit, the output end of the second decoding receiving circuit and the control end of the second single-pole double-throw relay; the output end of the second coding transmitting circuit is the transmitting output end of the second receiving and transmitting control module; the input end of the second decoding receiving circuit is the receiving input end of the second receiving and transmitting control module; and the second energy storage battery is in power supply connection with the second controller.
Furthermore, a second annular groove is formed in the outer wall of the transmitting nipple, a second annular magnet is arranged in the second annular groove, and a second cover plate is arranged outside the second annular groove.
Further, the first communicator and the second communicator each include:
the first annular magnet of the first communicator and the second annular magnet of the second communicator are wound on the outer peripheral surfaces of the corresponding connecting columns;
the insulating layer is wrapped on the outer parts of the first annular magnet of the first communicator and the second annular magnet of the second communicator;
the anti-abrasion cage is covered outside the insulating layer, and epoxy glue is filled between the anti-abrasion cage and the insulating layer.
Furthermore, the outer peripheral surface of the connecting column is provided with a plurality of gaps, the gaps are arranged around the peripheral surface of the connecting column at equal angles, and insulating colloid is filled between the first annular magnet of the first communicator and the second annular magnet of the second communicator and the corresponding gaps.
Further, the insulating layer comprises an enameled wire and a glass fiber reinforced plastic cloth, the enameled wire is wrapped on the outer portions of the first annular magnet of the first communicator and the second annular magnet of the second communicator, the glass fiber reinforced plastic cloth is wrapped on the outer side of the enameled wire, and the glass fiber reinforced plastic cloth is arranged between the enameled wire and the epoxy colloid.
The invention has the beneficial effects that:
according to the near-bit while-drilling device provided by the invention, the transmitting short section and the receiving short section can transmit or receive signals in a switching manner, so that the functions of remote debugging of the transmitting short section, wireless short transmission between the transmitting short section and the receiving short section and wireless short transmission between the receiving short section and a logging-while-drilling instrument can be realized, and the efficiency of the near-bit wireless short transmission is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a near-bit while drilling device according to the present embodiment;
FIG. 2 is a schematic structural diagram of the receiving sub in FIG. 1;
FIG. 3 is a schematic diagram of the control of the components within the receiving electronic silo of FIG. 2;
FIG. 4 is a schematic structural diagram of the transmitting sub in FIG. 1;
FIG. 5 is a schematic diagram of the control of the components within the electron-emitting chamber of FIG. 4;
fig. 6 is a schematic structural diagram of the communicator of the present embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a near-bit while-drilling device of this embodiment, with reference to fig. 1, the device includes a logging-while-drilling instrument 1, a screw drilling tool 2 and a drill bit 3, which are coaxially disposed in sequence from top to bottom, an upper end of the logging-while-drilling instrument 1 is connected to a drill rod 4, a coaxial transmitting nipple 5 is fixedly disposed between the drill bit 3 and the screw drilling tool 2, a coaxial receiving nipple 6 is fixedly disposed between the logging-while-drilling instrument 1 and the screw drilling tool 2, and the transmitting nipple 5 and the receiving nipple 6 of this embodiment can transmit or receive signals in a switchable manner.
With reference to fig. 1, the device of this embodiment further includes a first communicator and a second communicator, the first communicator is disposed on the receiving nipple 6, the second communicator is disposed on the transmitting nipple 5, the receiving nipple 6 communicates with the logging-while-drilling instrument 1 and the second communicator through the first communicator, and the transmitting nipple 5 communicates with the logging-while-drilling instrument 1 and the first communicator through the second communicator.
Fig. 2 is a schematic structural diagram of the receiving nipple shown in fig. 1, and with reference to fig. 2, a first ring magnet 7 wound with a first spiral coil is disposed on an outer wall of the receiving nipple 6 in this embodiment, and the first spiral coil is the first communicator.
Further, with reference to fig. 2, in this embodiment, a first annular groove is formed in an outer wall of the receiving nipple 6, a first annular magnet 7 wound with a first spiral coil is disposed in the first annular groove, and a first cover plate 8 is disposed outside the first annular groove to prevent external slurry from entering the first annular groove and affecting normal operation of the first annular magnet 7.
Further, with reference to fig. 2, a receiving electronic cabin 9 is provided in the receiving short section 6 of this embodiment, fig. 3 is a schematic diagram of controlling components in the receiving electronic cabin in fig. 2, with reference to fig. 2 and fig. 3, a first receiving and transmitting control module 10 and a first single-pole double-throw relay 11 are provided in the receiving electronic cabin 9 of this embodiment, the first receiving and transmitting control module 10 has a transmitting output terminal, a receiving input terminal and a control terminal, the first single-pole double-throw relay 11 has a stationary contact, a first movable contact, a second movable contact and a control terminal, wherein the stationary contact of the first single-pole double-throw relay 11 is connected with one end of a first spiral coil 12, the other end of the first spiral coil 12 is grounded, the first movable contact of the first single-pole double-throw relay 11 is connected with the transmitting output terminal of the first receiving and transmitting control module 10, the second movable contact of the first single-pole double-throw relay 11 is connected with the receiving input terminal of the first receiving and transmitting control module 10, the control end of the first single-pole double-throw relay 11 is connected with the control end of the first receiving and transmitting control module 10.
Therefore, when the first single-pole double-throw relay 11 closes the first moving contact, the first receiving/transmitting control module 10 is switched to the transmitting mode, and the first spiral coil of the first ring magnet 7 is the transmitting antenna, and when the first single-pole double-throw relay 10 closes the second moving contact, the first receiving/transmitting control module 10 is switched to the receiving mode, and the first spiral coil of the first ring magnet 7 is the receiving antenna.
The first receiving/transmitting control module 10 is a module having an information encoding/transmitting function and an information decoding/receiving function, and a preferred example is given here, specifically:
the first receiving and transmitting control module 10 comprises a first controller, a first coding transmitting circuit, a first decoding receiving circuit and a first energy storage battery, wherein the first controller is respectively connected with an input end of the first coding transmitting circuit, an output end of the first decoding receiving circuit and a control end of a first single-pole double-throw relay, an output end of the first coding transmitting circuit is a transmitting output end of the first receiving and transmitting control module, an input end of the first decoding receiving circuit is a receiving input end of the first receiving and transmitting control module, and the first energy storage battery is in power supply connection with the first controller.
In addition, the first encoding transmission circuit includes a first encoder, a first carrier modulation circuit, and a first multivibrator connected in series; the first decoding receiving circuit comprises a first preamplification circuit, a first filter circuit, a first program control amplification circuit and a first decoder which are sequentially connected in series. The first encoder may be of the type of HT-12E digital encoding chip and the first decoder may be of the type of HT-12D digital decoding chip.
Fig. 4 is a schematic structural diagram of the transmitting sub shown in fig. 1, and with reference to fig. 4, a second ring magnet 13 wound with a second spiral coil is disposed on an outer wall of the transmitting sub 5 of this embodiment, where the second spiral coil is the second communicator.
Further, with reference to fig. 4, a second annular groove is formed in an outer wall of the transmitting nipple 5 of this embodiment, a second annular magnet 13 wound with a second spiral coil is disposed in the second annular groove, and a second cover plate 14 is disposed outside the second annular groove to prevent external slurry from entering the second annular groove and affecting normal operation of the second annular magnet 13.
With reference to fig. 4, a transmitting electronic cabin 15 is provided in the transmitting short section 5 of this embodiment, fig. 5 is a schematic diagram of controlling components in the transmitting electronic cabin in fig. 4, and with reference to fig. 4 and fig. 5, in this embodiment, a second receiving and transmitting control module 16 and a second single-pole double-throw relay 17 are provided in the transmitting electronic cabin 15, the second receiving and transmitting control module 16 has a transmitting output terminal, a receiving input terminal and a control terminal, the second single-pole double-throw relay 17 has a fixed contact, a first movable contact, a second movable contact and a control terminal, wherein the fixed contact of the second single-pole double-throw relay 17 is connected with one end of a second spiral coil 26, the other end of the second spiral coil 26 is grounded, the first movable contact of the second single-pole double-throw relay 17 is connected with the transmitting output terminal of the second receiving and transmitting control module 16, the second movable contact of the second single-pole double-throw relay 17 is connected with the receiving input terminal of the second receiving and transmitting control module 16, the control end of the second single-pole double-throw relay 17 is connected with the control end of the second receiving and transmitting control module 16.
Therefore, when the second single-pole double-throw relay 17 closes the first movable contact, the second receiving and transmitting control module 16 is switched to the transmitting mode, and the second spiral coil is the transmitting antenna, and when the second single-pole double-throw relay 17 closes the second movable contact, the second receiving and transmitting control module 16 is switched to the receiving mode, and the second spiral coil is the receiving antenna.
Similarly, the second rx/tx control module 16 of this embodiment is a module having an information encoding/transmitting function and an information decoding/receiving function, and a preferred example is specifically given here:
the second receiving and transmitting control module 16 comprises a second controller, a second coding and transmitting circuit, a second decoding and receiving circuit and a second energy storage battery; the second controller is respectively connected with the input end of the second coding transmitting circuit, the output end of the second decoding receiving circuit and the control end of the second single-pole double-throw relay; the output end of the second coding transmitting circuit is the transmitting output end of the second receiving and transmitting control module; the input end of the second decoding receiving circuit is the receiving input end of the second receiving and transmitting control module; the second energy storage battery is in power supply connection with the second controller.
Here, the second encoding transmission circuit includes a second encoder, a second carrier modulation circuit, and a second multivibrator connected in series; the second decoding receiving circuit comprises a second preamplification circuit, a second filter circuit, a second program control amplification circuit and a second decoder which are sequentially connected in series, the type of the second encoder can be an HT-12E digital coding chip, and the type of the second decoder can be an HT-12D digital decoding chip.
The working principle of the near-bit while-drilling device of the embodiment is as follows:
when carrying out the remote debugging function to the transmission nipple joint, convert first spiral coil into transmitting coil, and convert second spiral coil into receiving coil, thereby make first receipt transmission control module can send the debugging instruction through encoding through first spiral coil, the debugging instruction of this code has been modulated into a high frequency signal, thereby lead to receiving and can produce the vortex between nipple joint all directions and the stratum, this vortex can produce the electromagnetic field of reversal around second spiral coil, thereby produce the induced current relevant with the debugging instruction of encoding, the debugging instruction of the code that this induced current carried is received to the second, obtain this debugging instruction, thereby realize carrying out the remote debugging function to the transmission nipple joint.
When the wireless short-distance transmission function between the transmitting short section and the receiving short section is carried out, the first spiral coil is converted into a receiving coil, the second spiral coil is converted into a transmitting coil, thereby enabling the second receiving and transmitting control module to send out the encoded downhole measurement data (such as well deviation azimuth angle, tool face angle, formation resistivity and natural gamma value, etc.) through the second spiral coil, the encoded downhole measurement data is modulated into a high frequency signal, causing eddy currents to develop between the transmitting sub and the formation in all directions, the eddy current can generate an alternating electromagnetic field around the first spiral coil, so that induced current related to coded underground measurement data is generated, the first receiving and transmitting control module obtains the underground measurement data by decoding the coded underground measurement data carried by the induced current, and the wireless short-distance transmission function between the transmitting short section and the receiving short section is realized.
When the wireless short-distance transmission function between the receiving short section and the logging-while-drilling instrument is carried out, the first spiral coil is converted into the transmitting coil, so that the first receiving and transmitting control module can send coded transmission data through the first spiral coil, the coded transmission data are modulated into a high-frequency signal, eddy currents can be generated between all directions of the receiving short section and the stratum, the eddy currents can generate alternating electromagnetic fields around the logging-while-drilling instrument, induced currents relevant to the coded transmission data are received by the logging-while-drilling instrument, the logging-while-drilling instrument obtains the transmission data by decoding the coded transmission data carried by the induced currents, and the wireless short-distance transmission function between the receiving short section and the logging-while-drilling instrument is achieved.
This embodiment all is equipped with the receipt transmission control module group on transmission nipple joint and receipt nipple joint for transmission nipple joint and receipt nipple joint all have the ability of received signal and transmitted signal, thereby realized carrying out remote debugging function, wireless short pass function between transmission nipple joint and the receipt nipple joint and receive the nipple joint and along with the wireless short pass function between the well logging instrument, improved the wireless short efficiency of passing of nearly drill bit.
In this embodiment, the first communicator and the second communicator are key components responsible for signal instruction transmission, and in order to ensure the reliability of the communicators in the use process, the structure of the communicators is improved in this embodiment.
Fig. 6 is a schematic structural diagram of the communicator of the present embodiment, and referring to fig. 6, the communicator of the present embodiment includes a connection post 18, a magnet 19 wound with a spiral coil, an insulating layer, an anti-wear cage 20, and an epoxy resin 21.
With reference to fig. 6, the connection column 18 of this embodiment is a carrier of the antenna, and is preferably a non-magnetic drill collar, which is a low-carbon high-chromium manganese alloy steel drill collar refined through strict chemical component proportion, and has good mechanical properties of low magnetic permeability and high strength, and the influence on communication can be reduced.
Referring to fig. 6, the connecting column 18 of this embodiment has a through hole for being fitted in the corresponding groove.
Referring to fig. 6, the magnet 19 of the present embodiment is wound around the outer circumferential surface of the connection column 18 to implement the near-bit signal communication function.
Further, with reference to fig. 6, in this embodiment, the outer peripheral surface of the connection column 18 is provided with a plurality of notches 22, the plurality of notches 22 are arranged around the peripheral surface of the connection column 18 at equal angles, and an insulating colloid 23 is filled between the magnet 19 and the notches 22, so that the insulating effect between the magnet 19 and the connection column 18 can be further improved, and in addition, the magnet 19 can be enabled to have a first friction surface contacting the connection column 18 and a second friction surface contacting the insulating colloid 23, and the first friction surface and the second friction surface have different friction degrees, so that the firmness of the assembly of the magnet 19 on the connection column 18 can be improved.
Preferably, the material of the insulating colloid 23 of the present embodiment may be epoxy glue.
The notch 22 of this embodiment is preferably a flat surface that is parallel to the central axis of the connecting post 18.
Referring to fig. 6, the insulating layer of the present embodiment is wrapped on the outer portion of the magnet 19 to realize the insulating arrangement of the antenna from the outside.
Referring to fig. 6, in the present embodiment, the insulation layer includes an enamel wire 24, and the enamel wire 24 is wrapped on the outer portion of the magnet 19.
Further, referring to fig. 6, the insulating layer in this embodiment further includes a glass fiber reinforced plastic cloth 25, the glass fiber reinforced plastic cloth 25 is wrapped outside the enameled wire 24, and the glass fiber reinforced plastic cloth 25 is disposed between the enameled wire and the epoxy colloid 23. The glass fiber reinforced plastic cloth 25 has a certain hardness to resist external interference and prevent the magnet 19 from deforming, so that communication can be performed normally.
Referring to fig. 6, the wear-resistant cage 20 of the present embodiment is covered outside the insulating layer, and an epoxy resin 21 is filled between the wear-resistant cage 20 and the insulating layer (glass fiber reinforced plastic cloth 25).
Preferably, the material of the wear-proof cage 20 of this embodiment is metal, such as corrosion-resistant stainless steel, and the like, which is not limited in this embodiment.
When nearly drill bit is along with boring the in-process that the instrument was using, the abrasionproof cage of this embodiment can prevent to lead to the insulating layer to damage because of the friction, influences the insulating effect of antenna, and because it has epoxy colloid to fill between abrasionproof cage and the insulating layer, not only can realize being connected between abrasionproof cage and the insulating layer, can also prevent that underground mud from entering into insulating layer and magnet, influences the insulating effect of antenna and the communication work of magnetic stripe, has fine practicality.
The following embodiments are provided for the purpose of illustrating the present invention and are not to be construed as limiting the present invention in any way, and it will be apparent to those skilled in the art that the technical features of the present invention can be modified or changed in some ways without departing from the scope of the present invention.
Claims (10)
1. A near-bit while-drilling device comprises a logging-while-drilling instrument, a screw drilling tool and a bit which are coaxially arranged from top to bottom in sequence, wherein the upper end of the logging-while-drilling instrument is connected with a drill rod, a coaxial transmitting short section is fixedly arranged between the bit and the screw drilling tool, and a coaxial receiving short section is fixedly arranged between the logging-while-drilling instrument and the screw drilling tool;
the device further comprises a first communicator and a second communicator, the first communicator is arranged on the receiving short section, the second communicator is arranged on the transmitting short section, the receiving short section is communicated with the logging-while-drilling instrument and the second communicator through the first communicator, and the transmitting short section is communicated with the logging-while-drilling instrument and the first communicator through the second communicator.
2. The near-bit while drilling device according to claim 1, wherein a first ring magnet wound with a first spiral coil is arranged on an outer wall of the receiving nipple, and the first spiral coil is the first communicator;
be equipped with the receipt electron storehouse in the nipple joint of receipt, be equipped with first receipt transmission control module group and first single-pole double-throw relay in the receipt electron storehouse, first receipt transmission control module group has transmission output, receipt input and control end, first single-pole double-throw relay has stationary contact, first movable contact, second movable contact and control end, wherein:
the fixed contact of the first single-pole double-throw relay is connected with one end of the first spiral coil, the other end of the first spiral coil is grounded, the first movable contact of the first single-pole double-throw relay is connected with the transmitting output end of the first receiving and transmitting control module, the second movable contact of the first single-pole double-throw relay is connected with the receiving input end of the first receiving and transmitting control module, and the control end of the first single-pole double-throw relay is connected with the control end of the first receiving and transmitting control module.
3. The near-bit while drilling device of claim 2, wherein the first receive transmit control module comprises a first controller, a first encode transmit circuit, a first decode receive circuit, and a first energy storage battery, wherein:
the first controller is respectively connected with the input end of the first coding transmitting circuit, the output end of the first decoding receiving circuit and the control end of the first single-pole double-throw relay, the output end of the first coding transmitting circuit is the transmitting output end of the first receiving transmitting control module, the input end of the first decoding receiving circuit is the receiving input end of the first receiving transmitting control module, and a first energy storage battery is connected with the first controller in a power supply mode.
4. The near-bit while drilling device of claim 2, wherein a first annular groove is formed in an outer wall of the receiving nipple, the first annular magnet is arranged in the first annular groove, and a first cover plate is arranged outside the first annular groove.
5. The near-bit while drilling device of claim 1, wherein a second annular magnet wound with a second spiral coil is arranged on the outer wall of the transmitting nipple, and the second spiral coil is the second communicator;
be equipped with transmission electron storehouse in the transmission nipple joint, be equipped with second in the transmission electron storehouse and receive transmission control module group and second single-pole double-throw relay, second is received transmission control module group and is had transmission output, receiving input and control end, second single-pole double-throw relay has stationary contact, first movable contact, second movable contact and control end, wherein:
the fixed contact of the second single-pole double-throw relay is connected with one end of the second spiral coil, the other end of the second spiral coil is grounded, the first movable contact of the second single-pole double-throw relay is connected with the transmitting output end of the second receiving and transmitting control module, the second movable contact of the second single-pole double-throw relay is connected with the receiving input end of the second receiving and transmitting control module, and the control end of the second single-pole double-throw relay is connected with the control end of the second receiving and transmitting control module.
6. The near-bit while drilling device according to claim 5, wherein the second receive and transmit control module comprises a second controller, a second encoding and transmitting circuit, a second decoding and receiving circuit, and a second energy storage battery, wherein:
the second controller is respectively connected with the input end of the second coding transmitting circuit, the output end of the second decoding receiving circuit and the control end of the second single-pole double-throw relay; the output end of the second coding transmitting circuit is the transmitting output end of the second receiving and transmitting control module; the input end of the second decoding receiving circuit is the receiving input end of the second receiving and transmitting control module; and the second energy storage battery is in power supply connection with the second controller.
7. The near-bit while drilling device as recited in claim 5, wherein a second annular groove is formed in an outer wall of the launching sub, the second annular magnet is disposed in the second annular groove, and a second cover plate is disposed outside the second annular groove.
8. The near-bit while drilling device as recited in any one of claims 1-7, wherein the first and second communicators each comprise:
the first annular magnet of the first communicator and the second annular magnet of the second communicator are wound on the outer peripheral surfaces of the corresponding connecting columns;
the insulating layer is wrapped on the outer parts of the first annular magnet of the first communicator and the second annular magnet of the second communicator;
the anti-abrasion cage is covered outside the insulating layer, and epoxy glue is filled between the anti-abrasion cage and the insulating layer.
9. The near-bit while drilling device according to claim 8, wherein a plurality of notches are formed in the outer peripheral surface of the connecting column, the notches are arranged around the peripheral surface of the connecting column at equal angles, and insulating colloid is filled between each of the first annular magnet of the first communicator and the corresponding notch and between each of the second annular magnet of the second communicator and the corresponding notch.
10. The near-bit while drilling device according to claim 9, wherein the insulating layer comprises an enameled wire and a glass fiber reinforced plastic cloth, the enameled wire is wrapped on the outer portions of the first annular magnet of the first communicator and the second annular magnet of the second communicator, the glass fiber reinforced plastic cloth is wrapped on the outer side of the enameled wire, and the glass fiber reinforced plastic cloth is arranged between the enameled wire and the epoxy glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010913436.5A CN111827985A (en) | 2020-09-03 | 2020-09-03 | Near-bit while-drilling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010913436.5A CN111827985A (en) | 2020-09-03 | 2020-09-03 | Near-bit while-drilling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111827985A true CN111827985A (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010913436.5A Pending CN111827985A (en) | 2020-09-03 | 2020-09-03 | Near-bit while-drilling device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116291418A (en) * | 2023-05-19 | 2023-06-23 | 中海油田服务股份有限公司 | Logging instrument for electric imaging while drilling |
| CN116771331A (en) * | 2023-08-16 | 2023-09-19 | 中国科学院地质与地球物理研究所 | Underground signal monitoring device for wire-passing screw drilling tool |
-
2020
- 2020-09-03 CN CN202010913436.5A patent/CN111827985A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116291418A (en) * | 2023-05-19 | 2023-06-23 | 中海油田服务股份有限公司 | Logging instrument for electric imaging while drilling |
| CN116291418B (en) * | 2023-05-19 | 2023-07-18 | 中海油田服务股份有限公司 | Logging instrument for electric imaging while drilling |
| CN116771331A (en) * | 2023-08-16 | 2023-09-19 | 中国科学院地质与地球物理研究所 | Underground signal monitoring device for wire-passing screw drilling tool |
| CN116771331B (en) * | 2023-08-16 | 2023-12-08 | 中国科学院地质与地球物理研究所 | Underground signal monitoring device for wire-passing screw drilling tool |
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