CN105756671A - Wireless bidirectional information transmission device for oil-gas well - Google Patents
Wireless bidirectional information transmission device for oil-gas well Download PDFInfo
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- CN105756671A CN105756671A CN201610151839.4A CN201610151839A CN105756671A CN 105756671 A CN105756671 A CN 105756671A CN 201610151839 A CN201610151839 A CN 201610151839A CN 105756671 A CN105756671 A CN 105756671A
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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
Abstract
The invention discloses a wireless bidirectional information transmission device for an oil-gas well. The device consists of three parts: a ground signal receiving and downloading circuit, a well mouth sealing cover plate, an insulation and isolation sleeve, a shaft sleeve, an oil tube, a lower isolation connector, a signal feed short circuit nipple, a downhole signal uploading and receiving circuit and a circuit sealing cabin. According to the device, tubular columns in the well are used as information transmission carriers so as to realize a ground-downhole bidirectional wireless information transmission function, so that the data acquired by downhole sensors can be transmitted to the ground in real time or at regular time, and the control signals sent by ground equipment can be transmitted downhole so as to control the starting, stopping or operation of the downhole sensors. The device disclosed by the invention has the advantages of being free of trip-in cables, simple to construct and low in construction cost, and being capable of realizing real-time transmission or time-share transmission of the ground information and downhole information.
Description
Technical field
The present invention relates to the information transmission equipment in oil-gas mining field, be specifically related to a kind of wireless two-way information carrying means for oil gas field well.
Background technology
Current in oil, shale gas and coal bed gas water filling and oil recovery, gas recovery well, obtain the data of downhole sensor collection or by ground in the face of the sensor of down-hole carries out starting and turn off control, it is generally adopted two ways, one is to use cable transmission signal, namely by cable, the data of downhole sensor collection are transferred to ground, simultaneously by control signal by terrestrial transmission to down-hole；Another kind is the signal transmitting and receiving instrument with steel wire rope lifting, is namely lifted signal transmitting and receiving instrument by steel wire rope and transfers to down-hole with sensor to fetching the data that read sensor gathers in oil pipe.
Generally recovering the oil, gas recovery well recovers the oil, gas production instrument is connected to the tail end of oil pipe, sensor is arranged on oil recovery, on gas production instrument, in water injection well, injection well downhole flow regulator is also attached to the tail end of oil pipe, sensor is arranged in injection well downhole flow regulator, so being accomplished by together being lowered into down-hole with oil pipe when laying by the signal cable of ground connection downhole sensor, but there is problem below in this operating type: owing to cable laying is between oil pipe and sleeve pipe, the cable that cable is transferred with oil pipe when laying task is likely to produce friction with sleeve pipe and cause cable failure, especially when cable lays in the inclined shaft that hole angle is bigger, and cable passes through the displacement well section of extended reach well with oil pipe, when the radius of curvature section of horizontal well and horizontal segment, make it with sleeve friction because cable self gravitation produces to drag to hang down and cause breakage even disconnected by card.In view of this this its operating cost of mode having cable communication and operating risk are all high.
Signal transmitting and receiving instrument according to steel wire rope lifting obtains the data that downhole sensor gathers, the problem that there is also following several respects: the 1. steel wire rope lifting signal transmitting and receiving instrument transferred by ground must could read data with sensor to connecting from sensor, therefore operate not only loaded down with trivial details, time-consuming, effort, and once dock bad data are difficult to successfully read out；2. when the hole angle of oil recovery, gas production and water injection well is more than 45。Time, or when sensor is arranged on the horizontal segment of horizontal well, lifts signal transmitting and receiving instrument with steel wire rope and almost cannot be operated；3. this mode does not have the real-time Transmission of data and the real-time controlling to sensor.Can be seen that from above several aspects the application of steel wire rope lifting signal transmitting and receiving instrument is very restricted.
At present but without down-hole information being uploaded in real time in without cable situation ground and ground control signal being transferred to the transmitted in both directions technology of down-hole in oil, shale gas and coal bed gas water filling and oil recovery gas recovery well.
Summary of the invention
For solving in current oil gas mining environment, the difficulty of aboveground, downhole data transmission aspect and problem, the present invention provides a kind of wireless two-way information carrying means for oil gas field well.Described device utilizes existing tubing string in well to transmit carrier as information, realize aboveground with under-well bi-directional wireless information transfer function, the data that downhole sensor can be gathered in real time or timing transmission to ground, it is also possible to the control signal sent by ground installation is transferred to down-hole to control the unlatching of downhole sensor, shutoff or operating.
For realizing above-mentioned target, the present invention by the following technical solutions:
A kind of wireless two-way information carrying means for oil gas field well.Described device is made up of nine parts, receive including ground signal and under conduct electricity road, wellhead sealing cover plate, insulating sleeve, wellbore casing, oil pipe, lower isolation adapter, signal feed short circuit pipe nipple, underground signal upload and receive circuit and circuit sealing nacelle.Described ground signal receive and under the road that conducts electricity be connected with described wellhead sealing cover plate and wellbore casing, described insulating sleeve is by described wellhead sealing cover plate, oil pipe and wellbore casing are dielectrically separated from well head place and come, oil pipe and circuit sealing nacelle are dielectrically separated from the afterbody of oil pipe and come by described lower isolation adapter, described signal feed short circuit pipe nipple realizes the electrical connection between wellbore casing and circuit sealing nacelle, described underground signal is uploaded and is received circuit and is positioned at inside described circuit sealing nacelle, and be connected with circuit sealing nacelle by wire, described wellbore casing is in the periphery of described oil pipe, separated by the anti-centralizer that reclines of oil pipe between the two.
Described ground signal receive and under conduct electricity routing transformer ,+5V regulated power supply, signal transmission and reception controller, power amplifier, small signal amplifier, traffic filter, signal shaper and signal isolator composition.Described signal isolator is made up of a magnet ring and the three groups of coils being wound on magnet ring, and first group is input/output coil, and second group is signal input line circle, and the 3rd group is output line circle.The material of described magnet ring is ferrite or permalloy.One end of described transformator connects outside power frequency supply, and the other end is connected with described+5V regulated power supply；One end of described+5V regulated power supply is connected with described transformator, and the other end is connected with described signal transmission and reception controller；One end of described signal transmission and reception controller is connected with described+5V regulated power supply and described signal shaper respectively, and the other end is connected with described power amplifier；One end of described power amplifier is connected with described signal transmission and reception controller, and the other end is connected with the output line circle of described signal isolator；One end of described signal shaper is connected with described signal transmission and reception controller, and the other end is connected with described traffic filter；One end of described traffic filter is connected with described signal shaper, and the other end is connected with described small signal amplifier；One end of described small signal amplifier is connected with described traffic filter, and the other end is connected with the signal input line circle of described signal isolator；One end of the signal input line circle of described signal isolator is connected with described small signal amplifier, other end ground connection；One end of the output line circle of described signal isolator is connected with described power amplifier, other end ground connection；One end of the input/output coil of described signal isolator is connected with signal input/output line, and the other end is connected with signal ground.
Described wellhead sealing cover plate has a well head ground connection pin, for connect described ground signal receive and under conduct electricity the output ground wire on road.
There is a ground signal thread casing connecting pin upper end of described wellbore casing, in order to connect described ground signal receive and under conduct electricity the signal input/output line on road.
The middle part of described oil pipe is provided with the anti-centralizer that reclines of some oil pipes, and its effect is to avoid oil pipe and described wellbore casing to come in contact, and the described anti-centralizer that reclines adopts rubber type of material to make；Tail end at oil pipe has a circuit cabin and oil pipe ground link steady pin, and its effect is that the ground wire that the earth lead sealing-plug with described circuit nacelle is drawn is connected.
Described lower isolation adapter is formed by being dielectrically separated from pipe nipple, insulating centralizer and connecting short section, described in be dielectrically separated from pipe nipple and adopt fiberglass or other high-strength insulating material to make, described insulating centralizer adopts rubber type of material to make.
Described signal feed short circuit pipe nipple is formed with feed short-circuit spring frame by feeding short circuit pipe nipple.
Electricity path control deivce, power amplifier, two-way signaling isolator, signal shaper, traffic filter, small signal amplifier and+5V battery composition are uploaded and received to described underground signal.Described+5V battery all has with each functional module and is connected, and provides electric energy for it；Described controller is the core of whole circuit, single-chip microcomputer fill the post of.Described signal isolator is made up of a magnet ring and the three groups of coils being wound on magnet ring, and first group is input/output coil, and second group is signal input line circle, and the 3rd group is output line circle.The material of described magnet ring is ferrite or permalloy.One end of described controller is connected with sensor control lines and sensor data cable respectively, and the other end is connected with described power amplifier and signal shaper respectively；One end of described power amplifier is connected with described controller, and the other end is connected with the output line circle of described signal isolator；One end of the output line circle of described signal isolator is connected with described power amplifier, other end ground connection；One end of described signal shaper is connected with described controller, and the other end is connected with described traffic filter；One end of described traffic filter is connected with described signal shaper, and the other end is connected with described small signal amplifier；One end of described small signal amplifier is connected with described traffic filter, and the other end is connected with the signal input line circle of described signal isolator；One end of the signal input line circle of described signal isolator is connected with described small signal amplifier, other end ground connection；One end of the input/output coil of described signal isolator is connected with signal input/output line, and the other end is connected with signal ground.
Described electric circuit in well nacelle is by circuit cabin body, circuit cabin capsul, earth lead sealing-plug.
A kind of wireless two-way information carrying means for oil gas field well, its signal transmission passage is made up of two parts, and a part is transmission channel, and another part is ground wire.Described transmission channel include described ground signal receive and under the conduct electricity signal input/output line on road, wellbore casing, signal feed short circuit pipe nipple, circuit nacelle, described underground signal upload and receive the signal input/output line of circuit.Described ground signal receive and under the signal input/output line on road that conducts electricity be connected with the telescopic joint pin of ground signal pipeline of described wellbore casing upper end, the spring(-supported) mount of the inwall of described wellbore casing underground part and described signal feed short circuit pipe nipple realizes electrically contacting by elastic pressure；Described signal feed short circuit pipe nipple is connected in described circuit nacelle, described underground signal is uploaded and is received the signal input/output line of circuit and is connected with described circuit nacelle, thus constitute from ground signal receive and the road that conducts electricity upload to underground signal and receive the signal transmission line of circuit.Described ground wire includes wellhead equipment that well head cover plate is connected with oil pipe, oil pipe, circuit cabin and the oil pipe earth lead steady pin of oil pipe tail end and is positioned at the earth lead sealing-plug in described circuit nacelle.Described well head cover plate is the earth plate of system, it receive with described ground signal and under the conduct electricity earth lead on road, wellhead equipment and oil pipe be connected, formed altogether；The ground wire that described oil pipe is drawn with the earth lead sealing-plug in described circuit nacelle by the circuit cabin of its tail end and oil pipe earth lead steady pin is connected, thus being uploaded and receive circuit ground in circuit cabin and the described underground signal that is located therein.
A kind of wireless two-way information carrying means for oil gas field well, its work process is:
1) instruction sends: first, described ground signal receive and under conduct electricity the mode of operation according to downhole sensor of the signal transmission and reception controller in road, produce to control coding, and be carrier signal by control coded modulation, carrier frequency is at 1KHz-100KHz, the carrier signal modulated is input to described power amplifier, and the signal after power amplification is input in the output line circle of described signal isolator, and under the mutual inductance effect of magnetic core, signal is coupled on described input/output coil；Then, by the signal of described input/output coil output through signal transmission channel described in described signal input/output line feed-in.
2) command signal transmission: first, described ground signal receive and under conduct electricity the command signal that road sends, by described signal input/output line, be connected to the telescopic joint pin of ground signal pipeline of described wellbore casing upper end；Secondly, command signal, along the underground part of described wellbore casing, by described signal feed short circuit pipe nipple, is delivered to described circuit nacelle；Again, command signal, by being connected to the wire in circuit nacelle, is delivered to described underground signal and uploads and receive the signal input/output line of circuit.
3) command signal receives and processes: first, uploads and receives the incoming command signal of the signal input/output line of circuit from described underground signal and be sent to the signal input/output terminal of described signal isolator；Secondly, this command signal is coupled on described signal input line circle through the input/output coil of described signal isolator, and is fed into described small signal amplifier；Again, command signal is sent into after described traffic filter and described signal shaper process and signal is demodulated in described controller and recovers the instruction that subsurface passes；Finally, downhole sensor is controlled operation according to instruction by described controller, uploads with the data acquisition and data determining downhole sensor.
4) data send: first, described underground signal upload and receive the data signal that circuit sends, be connected in described circuit nacelle by described signal input/output line；Secondly, data signal, by described signal feed short circuit pipe nipple, is delivered on described wellbore casing；Again, data signal transmission is to the telescopic joint pin of ground signal pipeline of described wellbore casing upper end；Finally, data signal by described signal input/output line be transferred to described ground signal receive and under conduct electricity road.
5) data signal reception and process: first, from down-hole upload to the data signal on ground received by described ground signal and conduct electricity road signal input/output line enter described signal isolator input/output coil；Secondly, data signal to described signal input line circle, and is fed into described small signal amplifier through Mutual Inductance Coupling；Again, data signal sends into described signal transmission and reception controller through described traffic filter, signal shaper after processing；The downhole sensor signal received finally is demodulated recovering data in described signal transmission and reception controller, and the data recovered storage is waited at any time the reading of computer.
Described command signal and data signal both can time sharing transmissions, it is also possible to transmit simultaneously.
Advantages of the present invention and having the beneficial effect that
1) adopt in well existing tubing string as signal transport vehicle, it is not necessary under enter cable, construction is simple, and construction cost is low；
2) real-time Transmission or the time sharing transmissions of ground and down-hole information can be realized.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is a kind of wireless two-way information carrying means pie graph for oil gas field well of the present invention.
In figure, A be ground signal receive and under conduct electricity road, B is wellhead sealing cover plate, and C is insulating sleeve, and D is wellbore casing, and E is oil pipe, and F is lower isolation adapter, and G is signal feed short circuit pipe nipple, and H is that circuit is uploaded and received to underground signal, and I is sealing cabin.
Fig. 2 be ground signal of the present invention receive and under pass circuit structure diagram.
In figure, A0 is ground power-frequency voltage input, and A1 is transformator, A2 is+5V regulated power supply, and A3 is signal transmission and reception controller, and A4 is power amplifier, A5 is signal shaper, and A6 is traffic filter, A7 small signal amplifier, A8 is signal isolator, A8-1 is signal input/output coil, and A8-2 is signal input line circle, and A8-3 is output line circle, A9 is signal input/output line, and A10 is ground connection.
Fig. 3 is that underground signal of the present invention is uploaded and receives circuit structure diagram.
In figure, H0 is sensor control signal line, and H1 is sensor data signal line, H2 is controller, and H3 is power amplifier, and H4 is signal shaper, H5 is traffic filter, and H6 is small signal amplifier, and H7 is two-way signaling isolator, H7-1 is signal input/output coil, H7-2 is signal input line circle, and H7-3 is output line circle, and H8 is+5V battery, H9 is signal input/output line, and H10 is ground connection.
Fig. 4 is wellbore casing structure chart of the present invention.
In figure, D1 is the telescopic joint pin of ground signal pipeline, and D2 is casing pipe.
Fig. 5 is vitta structure figure of the present invention.
In figure, B1 is well head ground connection pin, and E1 is the anti-centralizer that reclines of oil pipe, and E2 is circuit cabin and oil pipe ground link steady pin.
Fig. 6 is lower isolation connector construction figure of the present invention.
In figure, F1 is dielectrically separated from pipe nipple, and F2 is insulating centralizer, and F3 is connecting short section.
Fig. 7 is insulating sleeve schematic diagram of the present invention.
Fig. 8 is electric circuit in well nacelle schematic diagram of the present invention.
In figure, I1 is circuit cabin body, and I2 is circuit cabin capsul, and H is that circuit is uploaded and received to underground signal, and I3 is earth lead sealing-plug.
Fig. 9 is signal feed short circuit pipe nipple structure chart of the present invention.
In figure, G1 is feed short circuit pipe nipple, and G2 is feed short-circuit spring frame.
Detailed description of the invention
Embodiment 1
A kind of wireless two-way information carrying means for oil gas field well.Described device is made up of nine parts, receive including ground signal and under conduct electricity road A, wellhead sealing cover plate B, insulating sleeve C, wellbore casing D, oil pipe E, lower isolation adapter F, signal feed short circuit pipe nipple G, underground signal upload and receive circuit H and circuit sealing nacelle I.Described ground signal receive and under the road A that conducts electricity be connected with described wellhead sealing cover plate B and wellbore casing D, described insulating sleeve C is by described wellhead sealing cover plate B, oil pipe E and wellbore casing D is dielectrically separated from well head place and comes, oil pipe E and circuit sealing nacelle I are dielectrically separated from the afterbody of oil pipe E and come by described lower isolation adapter F, described signal feed short circuit pipe nipple G realizes the electrical connection between wellbore casing D and circuit sealing nacelle I, described underground signal is uploaded and is received circuit H and is positioned at inside described circuit sealing nacelle I, and be connected with circuit sealing nacelle I by signal input/output line H8, described wellbore casing D is in the periphery of described oil pipe E, separated by the anti-centralizer E1 that reclines of oil pipe between the two.
Described ground signal receive and under the road A that conducts electricity be made up of transformator A1 ,+5V regulated power supply A2, signal transmission and reception controller A3, power amplifier A4, signal shaper A5, traffic filter A6, small signal amplifier A7 and signal isolator A8.Described signal isolator A8 is made up of a magnet ring and the three groups of coils being wound on magnet ring, and first group is input/output coil A8-1, and second group is signal input line circle A8-2, and the 3rd group is output line circle A8-3.The material of described magnet ring is ferrite or permalloy.One end of described transformator A1 connects outside power frequency supply A0, and the other end is connected with described+5V regulated power supply A2；One end of described+5V regulated power supply A2 is connected with described transformator A1, and the other end is connected with described signal transmission and reception controller A3；One end of described signal transmission and reception controller A3 is connected with described+5V regulated power supply A2 and described signal shaper A5 respectively, and the other end is connected with described power amplifier A4；One end of described power amplifier A4 is connected with described signal transmission and reception controller A3, and the other end is connected with the output line circle A8-3 of described signal isolator A8；One end of described signal shaper A5 is connected with described signal transmission and reception controller A3, and the other end is connected with described traffic filter A6；One end of described traffic filter A6 is connected with described signal shaper A5, and the other end is connected with described small signal amplifier A7；One end of described small signal amplifier A7 is connected with described traffic filter A6, and the other end is connected with the signal input line circle A8-2 of described signal isolator A8；One end of the signal input line circle A8-2 of described signal isolator A8 is connected with described small signal amplifier A7, other end ground connection A10；One end of the output line circle A8-3 of described signal isolator A8 is connected with described power amplifier A4, other end ground connection A10；One end of the input/output coil A8-1 of described signal isolator A8 is connected with signal input/output line A9, and the other end is connected with signal ground A10.
Described wellhead sealing cover plate B has a well head ground connection pin B1, for connect described ground signal receive and under conduct electricity the output ground wire A10 on road.
There is a ground signal thread casing connecting pin D1 upper end of described wellbore casing D, in order to connect described ground signal receive and under conduct electricity the signal input/output line A9 on road.
The middle part of described oil pipe E is provided with the anti-centralizer E1 that reclines of some oil pipes, and its effect is to avoid oil pipe E and described wellbore casing D to come in contact, and the described anti-centralizer E1 that reclines adopts rubber type of material to make；Tail end at oil pipe E has a circuit cabin and oil pipe ground link steady pin E2, and its effect is that the ground wire drawn of the earth lead sealing-plug I3 with described circuit nacelle I is connected.
Described lower isolation adapter F is formed by being dielectrically separated from pipe nipple F1, insulating centralizer F2 and connecting short section F3, described in be dielectrically separated from pipe nipple F1 and adopt fiberglass or other high-strength insulating material to make, described insulating centralizer F2 adopts rubber type of material to make.
Described signal feed short circuit pipe nipple G is formed by feeding short circuit pipe nipple G1 and feed short-circuit spring frame G2.
Described underground signal is uploaded and is received circuit H and is made up of controller H2, power amplifier H3, signal shaper H4, traffic filter H5, small signal amplifier H6, two-way signaling isolator H7 and+5V battery H8.Described+5V battery H8 all has with each functional module and is connected, and provides electric energy for it；Described controller H2 is the core of whole circuit, the single-chip microcomputer of DSPIC3XF series fill the post of.Described two-way signaling isolator H7 is made up of a magnet ring and the three groups of coils being wound on magnet ring, and first group is input/output coil H7-1, and second group is signal input line circle H7-2, and the 3rd group is output line circle H7-3.The material of described magnet ring is ferrite or permalloy.One end of described controller H2 is connected with sensor control lines H0 and sensor data cable H1 respectively, and the other end is connected with described power amplifier H3 and signal shaper H4 respectively；One end of described power amplifier H3 is connected with described controller H2, and the other end is connected with the output line circle H7-3 of described two-way signaling isolator H7；One end of the output line circle H7-3 of described two-way signaling isolator H7 is connected with described power amplifier H3, other end ground connection H10；One end of described signal shaper H4 is connected with described controller H2, and the other end is connected with described traffic filter H5；One end of described traffic filter H5 is connected with described signal shaper H4, and the other end is connected with described small signal amplifier H6；One end of described small signal amplifier H6 is connected with described traffic filter H5, and the other end is connected with the signal input line circle H7-2 of described two-way signaling isolator；One end of the signal input line circle H7-2 of described two-way signaling isolator is connected with described small signal amplifier H6, other end ground connection H10；One end of the input/output coil H1 of described two-way signaling isolator is connected with signal input/output line H9, and the other end is connected with signal ground H10.
Described electric circuit in well nacelle I is made up of circuit cabin body I1, circuit cabin capsul I2, earth lead sealing-plug I3.
A kind of wireless two-way information carrying means for oil gas field well, its signal transmission passage is made up of two parts, and a part is transmission channel, and another part is ground wire.Described transmission channel include described ground signal receive and under the conduct electricity signal input/output line A9 of road A, wellbore casing D, signal feed short circuit pipe nipple G, circuit nacelle I, described underground signal upload and receive the signal input/output line H9 of circuit H.Described ground signal receive and under the signal input/output line A9 of road A that conducts electricity be connected with the telescopic joint pin D1 of ground signal pipeline of described wellbore casing D upper end, the spring(-supported) mount G2 of the inwall of described wellbore casing D underground part and described signal feed short circuit pipe nipple G realizes electrically contacting by elastic pressure；Described signal feed short circuit pipe nipple G is connected on described circuit nacelle I, described underground signal is uploaded and is received the signal input/output line H9 of circuit H and is connected with described circuit nacelle I, thus constitute from ground signal receive and the road A that conducts electricity upload to underground signal and receive the signal transmission passage of circuit H.Described ground wire includes wellhead equipment that well head cover plate B is connected, oil pipe E, circuit cabin and the oil pipe earth lead steady pin E2 of oil pipe E tail end and the earth lead sealing-plug I3 being positioned on described circuit nacelle I with oil pipe.Described well head cover plate B is the earth plate of system, it receive with described ground signal and under the conduct electricity earth lead A10 of road A, wellhead equipment and oil pipe E be connected, formed altogether；Described oil pipe E is connected with the ground wire H10 drawn of the earth lead sealing-plug I3 on described circuit nacelle I by the circuit cabin of its tail end and oil pipe earth lead steady pin E2, thus uploading and receive circuit H ground connection by circuit cabin I and the described underground signal that is located therein.
A kind of wireless two-way information carrying means for oil gas field well, its work process is:
1) instruction sends: first, described ground signal receive and under conduct electricity the mode of operation according to downhole sensor of the signal transmission and reception controller A3 in the A of road, produce to control coding, and be carrier signal by control coded modulation, carrier frequency is at 1KHz-100KHz, the carrier signal modulated is input to described power amplifier A4, signal after power amplification is input in the output line circle A8-3 of described signal isolator A8, and under the mutual inductance effect of magnetic core, signal is coupled on described input/output coil A8-1；Then, by the signal of described input/output coil A8-1 output through signal transmission channel described in described signal input/output line A9 feed-in.
2) command signal transmission: first, described ground signal receive and under conduct electricity the road A command signal sent, by described signal input/output line A9, be connected to the telescopic joint pin D1 of ground signal pipeline of described wellbore casing D upper end；Secondly, command signal, along the underground part of described wellbore casing D, by described signal feed short circuit pipe nipple G, is delivered to described circuit nacelle I；Again, command signal, by being connected to the wire on circuit nacelle I, is delivered to described underground signal and uploads and receive the signal input/output line H9 of circuit H.
3) command signal receives and processes: first, uploads and receives the command signal incoming for signal input/output line H9 of circuit H from described underground signal and be sent to the signal input/output terminal H7-1 of described two-way signaling isolator H7；Secondly, this command signal is coupled on described signal input line circle H7-2 through the input/output coil H7-1 of described two-way signaling isolator H7, and is fed into described small signal amplifier H6；Again, command signal is sent into after described traffic filter H5 and described signal shaper H4 processes and signal is demodulated in described controller H2 and recovers the instruction that subsurface passes；Finally, downhole sensor is controlled operation according to instruction by described controller H2, uploads with the data acquisition and data determining downhole sensor.
4) data send: first, described underground signal upload and receive the circuit H data signal sent, be connected on described circuit nacelle I by described signal input/output line H9；Secondly, data signal, by described signal feed short circuit pipe nipple G, is delivered on described wellbore casing D；Again, data signal transmission is to the telescopic joint pin D1 of ground signal pipeline of described wellbore casing D upper end；Finally, data signal by described signal input/output line A9 be transferred to described ground signal receive and under conduct electricity road A.
5) data signal reception and process: first, from down-hole upload to the data signal on ground received by described ground signal and conduct electricity road A signal input/output line A9 enter described signal isolator A8 input/output coil A8-1；Secondly, data signal to described signal input line circle A8-2, and is fed into described small signal amplifier A7 through Mutual Inductance Coupling；Again, data signal sends into described signal transmission and reception controller A3 after described traffic filter A6, signal shaper A5 process；The downhole sensor signal received finally is demodulated recovering data in described signal transmission and reception controller A3, and the data recovered storage is waited at any time the reading of computer.
Described command signal and data signal both can time sharing transmissions, it is also possible to transmit simultaneously.
Last it is noted that obvious, above-described embodiment is only for clearly demonstrating example of the present invention, and is not the restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also cannot all of embodiment be given exhaustive.And the apparent change thus extended out or variation are still among protection scope of the present invention.
Claims (9)
1. the wireless two-way information carrying means for oil gas field well, it is characterized in that: described device is made up of nine parts, receive including ground signal and under conduct electricity road, wellhead sealing cover plate, insulating sleeve, wellbore casing, oil pipe, lower isolation adapter, signal feed short circuit pipe nipple, underground signal upload and receive circuit and circuit sealing nacelle；Described ground signal receive and under the road that conducts electricity be connected with described wellhead sealing cover plate and wellbore casing, described insulating sleeve is by described wellhead sealing cover plate, oil pipe and wellbore casing are dielectrically separated from well head place and come, oil pipe and circuit sealing nacelle are dielectrically separated from the afterbody of oil pipe and come by described lower isolation adapter, described signal feed short circuit pipe nipple realizes the electrical connection between wellbore casing and circuit sealing nacelle, described underground signal is uploaded and is received circuit and is positioned at inside described circuit sealing nacelle, and be connected with circuit sealing nacelle by wire, described wellbore casing is in the periphery of described oil pipe, separated by the anti-centralizer that reclines of oil pipe between the two.
2. a kind of wireless two-way information carrying means for oil gas field well as claimed in claim 1, it is characterised in that: described ground signal receive and under conduct electricity routing transformer ,+5V regulated power supply, signal transmission and reception controller, power amplifier, small signal amplifier, traffic filter, signal shaper and signal isolator composition；Described signal isolator is made up of a magnet ring and the three groups of coils being wound on magnet ring, and first group is input/output coil, and second group is signal input line circle, and the 3rd group is output line circle, and the material of described magnet ring is ferrite or permalloy；One end of described transformator connects outside power frequency supply, and the other end is connected with described+5V regulated power supply；One end of described+5V regulated power supply is connected with described transformator, and the other end is connected with described signal transmission and reception controller；One end of described signal transmission and reception controller is connected with described+5V regulated power supply and described signal shaper respectively, and the other end is connected with described power amplifier；One end of described power amplifier is connected with described signal transmission and reception controller, and the other end is connected with the output line circle of described signal isolator；One end of described signal shaper is connected with described signal transmission and reception controller, and the other end is connected with described traffic filter；One end of described traffic filter is connected with described signal shaper, and the other end is connected with described small signal amplifier；One end of described small signal amplifier is connected with described traffic filter, and the other end is connected with the signal input line circle of described signal isolator；One end of the signal input line circle of described signal isolator is connected with described small signal amplifier, other end ground connection；One end of the output line circle of described signal isolator is connected with described power amplifier, other end ground connection；One end of the input/output coil of described signal isolator is connected with signal input/output line, and the other end is connected with signal ground.
3. a kind of wireless two-way information carrying means for oil gas field well as claimed in claim 1, it is characterised in that: described wellhead sealing cover plate has a well head ground connection pin, for connect described ground signal receive and under conduct electricity the output ground wire on road；There is a ground signal thread casing connecting pin upper end of described wellbore casing, in order to connect described ground signal receive and under conduct electricity the signal input/output line on road；The middle part of described oil pipe is provided with the anti-centralizer that reclines of some oil pipes, and its effect is to avoid oil pipe and described wellbore casing to come in contact, and the described anti-centralizer that reclines adopts rubber type of material to make；Tail end at oil pipe has a circuit cabin and oil pipe ground link steady pin, and its effect is that the ground wire that the earth lead sealing-plug with described circuit nacelle is drawn is connected.
4. a kind of wireless two-way information carrying means for oil gas field well as claimed in claim 1, it is characterized in that: described lower isolation adapter is formed by being dielectrically separated from pipe nipple, insulating centralizer and connecting short section, the described pipe nipple that is dielectrically separated from adopts fiberglass or other high-strength insulating material to make, and described insulating centralizer adopts rubber type of material to make.
5. a kind of wireless two-way information carrying means for oil gas field well as claimed in claim 1, it is characterised in that: described signal feed short circuit pipe nipple is by feeding short circuit pipe nipple and feed short-circuit spring frame forms.
6. a kind of wireless two-way information carrying means for oil gas field well as claimed in claim 1, it is characterised in that: electricity path control deivce, power amplifier, two-way signaling isolator, signal shaper, traffic filter, small signal amplifier and+5V battery composition are uploaded and received to described underground signal；Described+5V battery all has with each functional module and is connected, and provides electric energy for it；Described controller is the core of whole circuit, single-chip microcomputer fill the post of；Described signal isolator is made up of a magnet ring and the three groups of coils being wound on magnet ring, and first group is input/output coil, and second group is signal input line circle, and the 3rd group is output line circle, and the material of described magnet ring is ferrite or permalloy；One end of described controller is connected with sensor control lines and sensor data cable respectively, and the other end is connected with described power amplifier and signal shaper respectively；One end of described power amplifier is connected with described controller, and the other end is connected with the output line circle of described signal isolator；One end of the output line circle of described signal isolator is connected with described power amplifier, other end ground connection；One end of described signal shaper is connected with described controller, and the other end is connected with described traffic filter；One end of described traffic filter is connected with described signal shaper, and the other end is connected with described small signal amplifier；One end of described small signal amplifier is connected with described traffic filter, and the other end is connected with the signal input line circle of described signal isolator；One end of the signal input line circle of described signal isolator is connected with described small signal amplifier, other end ground connection；One end of the input/output coil of described signal isolator is connected with signal input/output line, and the other end is connected with signal ground；Described electric circuit in well nacelle is made up of circuit cabin body, circuit cabin capsul, earth lead sealing-plug.
7. a kind of wireless two-way information carrying means for oil gas field well as claimed in claim 1, it is characterised in that: the signal transmission passage of described device is made up of two parts, and a part is transmission channel, and another part is ground wire；Described transmission channel include described ground signal receive and under the conduct electricity signal input/output line on road, wellbore casing, signal feed short circuit pipe nipple, circuit nacelle, described underground signal upload and receive the signal input/output line of circuit；Described ground signal receive and under the signal input/output line on road that conducts electricity be connected with the telescopic joint pin of ground signal pipeline of described wellbore casing upper end, the spring(-supported) mount of the inwall of described wellbore casing underground part and described signal feed short circuit pipe nipple realizes electrically contacting by elastic pressure；Described signal feed short circuit pipe nipple is connected in described circuit nacelle, described underground signal is uploaded and is received the signal input/output line of circuit and is connected with described circuit nacelle, thus constitute from ground signal receive and the road that conducts electricity upload to underground signal and receive the signal transmission line of circuit；Described ground wire includes wellhead equipment that well head cover plate is connected with oil pipe, oil pipe, circuit cabin and the oil pipe earth lead steady pin of oil pipe tail end and is positioned at the earth lead sealing-plug in described circuit nacelle；Described well head cover plate is the earth plate of system, it receive with described ground signal and under the conduct electricity earth lead on road, wellhead equipment and oil pipe be connected, formed altogether；The ground wire that described oil pipe is drawn with the earth lead sealing-plug in described circuit nacelle by the circuit cabin of its tail end and oil pipe earth lead steady pin is connected, thus being uploaded and receive circuit ground in circuit cabin and the described underground signal that is located therein.
8. a kind of wireless two-way information carrying means for oil gas field well as claimed in claim 1, it is characterised in that the work process of described device is:
1) instruction sends: first, described ground signal receive and under conduct electricity the mode of operation according to downhole sensor of the signal transmission and reception controller in road, produce to control coding, and be carrier signal by control coded modulation, carrier frequency is at 1KHz-100KHz, the carrier signal modulated is input to described power amplifier, and the signal after power amplification is input in the output line circle of described signal isolator, and under the mutual inductance effect of magnetic core, signal is coupled on described input/output coil；Then, by the signal of described input/output coil output through signal transmission channel described in described signal input/output line feed-in；
2) command signal transmission: first, described ground signal receive and under conduct electricity the command signal that road sends, by described signal input/output line, be connected to the telescopic joint pin of ground signal pipeline of described wellbore casing upper end；Secondly, command signal, along the underground part of described wellbore casing, by described signal feed short circuit pipe nipple, is delivered to described circuit nacelle；Again, command signal, by being connected to the wire in circuit nacelle, is delivered to described underground signal and uploads and receive the signal input/output line of circuit；
3) command signal receives and processes: first, uploads and receives the incoming command signal of the signal input/output line of circuit from described underground signal and be sent to the signal input/output terminal of described signal isolator；Secondly, this command signal is coupled on described signal input line circle through the input/output coil of described signal isolator, and is fed into described small signal amplifier；Again, command signal is sent into after described traffic filter and described signal shaper process and signal is demodulated in described controller and recovers the instruction that subsurface passes；Finally, downhole sensor is controlled operation according to instruction by described controller, uploads with the data acquisition and data determining downhole sensor；
4) data send: first, described underground signal upload and receive the data signal that circuit sends, be connected in described circuit nacelle by described signal input/output line；Secondly, data signal, by described signal feed short circuit pipe nipple, is delivered on described wellbore casing；Again, data signal transmission is to the telescopic joint pin of ground signal pipeline of described wellbore casing upper end；Finally, data signal by described signal input/output line be transferred to described ground signal receive and under conduct electricity road；
5) data signal reception and process: first, from down-hole upload to the data signal on ground received by described ground signal and conduct electricity road signal input/output line enter described signal isolator input/output coil；Secondly, data signal to described signal input line circle, and is fed into described small signal amplifier through Mutual Inductance Coupling；Again, data signal sends into described signal transmission and reception controller through described traffic filter, signal shaper after processing；The downhole sensor signal received finally is demodulated recovering data in described signal transmission and reception controller, and the data recovered storage is waited at any time the reading of computer.
9. a kind of wireless two-way information carrying means for oil gas field well as described in claim 1 or 8, it is characterised in that: described command signal and data signal both can time sharing transmissions, it is also possible to transmit simultaneously.
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| CN108708712A (en) * | 2018-04-08 | 2018-10-26 | 阜新市石油工具厂 | A kind of communication modulation process method of oil pipe and casing composition |
| CN109477381A (en) * | 2016-07-15 | 2019-03-15 | 埃尼股份公司 | System for carrying out untethered bidirectional data transfers in the well for extracting formation fluid |
| CN113266343A (en) * | 2021-06-29 | 2021-08-17 | 华中科技大学 | Wireless signal transmission system |
| WO2021212605A1 (en) * | 2020-04-23 | 2021-10-28 | 中国科学院地质与地球物理研究所 | Underground tool, signal transmission system, and signal transmission method |
| CN114526064A (en) * | 2022-04-21 | 2022-05-24 | 西南石油大学 | Two-way wireless electromagnetic transmission device and method for cased well ground signal |
| CN115664053A (en) * | 2022-12-27 | 2023-01-31 | 中国石油天然气股份有限公司 | Underground electric energy and signal wireless transmission method and device based on electromagnetic coupling |
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