CN109083638A - A kind of teledata double-direction radio well testing system - Google Patents
A kind of teledata double-direction radio well testing system Download PDFInfo
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- CN109083638A CN109083638A CN201811197491.8A CN201811197491A CN109083638A CN 109083638 A CN109083638 A CN 109083638A CN 201811197491 A CN201811197491 A CN 201811197491A CN 109083638 A CN109083638 A CN 109083638A
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- 210000002445 nipple Anatomy 0.000 claims description 53
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
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- E21B41/0092—
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
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Abstract
The invention discloses a kind of teledata double-direction radio well testing systems, when the system signal downlink, order is issued by direct-reading and programmed computer, Transmit-Receive Unit of going into the well is sent to by remote cable downlink after terrestrial contr is handled, low frequency electromagnetic signals are converted the signal to again to send by wireless relay unit, underground Transmit-Receive Unit incudes the signal for emitting receiving coil on metallic carrier, is sent to pressure bomb；Pressure bomb acquisition data are sent to wireless relay unit using frequency conversion drive mode by underground Transmit-Receive Unit when signal uplink, again by returning terrestrial contr and computer by cable after Transmit-Receive Unit reception data of going into the well, the bidirectional wireless communication of teledata is realized.The present invention can adaptive variety classes and length cable, online real-time programming can be carried out to pressure bomb, and by adjusting low frequency electromagnetic signals frequency, adaptive short range and remote mode, also by suspend mode and wake-up both of which, underground Transmit-Receive Unit is made to adapt to long-time underground work.
Description
Technical field
The present invention relates to oil and gas well testing technical fields, more particularly to a kind of teledata double-direction radio well testing system.
Background technique
It is communicated by means of bidirectional wireless data, the oil/gas well of logarithm km depth is effectively detected, oily to guidance, gas well
Exploration and development has great importance, the first patent of invention of present inventor, Patent No. CN200910008856, open
A kind of long-range control well testing system, wherein " the contactless two-way signaling of DDTS transmits long-range control well testing system " be it is a kind of by
Ground installation controls the work of pressure bomb by cordless, in real time acquisition or readback temperature and pressure data, and
Down-hole pressure reservoir can be can be realized by the well testing system of ground real-time monitoring and the working condition of control pressure bomb
With the both-way communication of ground directly-reading system；Can be realized after driving a well any time period carries out data recording to downhole stored pressure gauge
Programming；Can be realized after driving a well any time period carries out data extraction and data readback to downhole memory pressure gauge, but in length
It is found in the field test of phase, there is own shortcomings and deficiency for technology disclosed in foregoing invention: (1) since electromagnetic signal is spread
Swept frequency is excessively high, and swept frequency range fixation can not adjust, and is influenced by different drilling fluids (medium), Different Strata environment,
Decay in some cases larger, so that transmission range is unable to reach 20 meters；(2) underground loads the carrier circuit of pressure gauge in underground
Always it is in full power operation state, causes the underground residence time short (being no more than one week)；(3) the reception pipe nipple hung under cable is adopted
It is powered with battery, circuit part is at the closed system independently of ground, in addition to increasing additional battery cost, using the time by electricity
Pond continuation of the journey limitation is outer, crashes if there is the communication failure with ground or circuit of going into the well, ground, which will be unable to reset it, restarts, and makes
Fail at operation.
The major tuneup that the present invention is carried out aiming at above-mentioned problems of the prior art, new remote of the one kind founded
Number of passes is according to double-direction radio well testing system, and so that the well testing system is reached, transmission range is farther, the time in well is longer, cost is lower
Purpose.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of teledata double-direction radio well testing systems, make the well testing system
It can reach that transmission range is farther, the time in well is longer, the lower purpose of cost, to overcome existing long-range control well testing system
Deficiency.
In order to solve the above technical problems, the present invention provides a kind of teledata double-direction radio well testing system, including direct-reading with
Programmed computer, terrestrial contr, Transmit-Receive Unit of going into the well, wireless relay unit, underground Transmit-Receive Unit and pressure bomb,
The direct-reading is connect by USB port with the terrestrial contr with programmed computer, is used for the ground
Control unit sends order, and receives data and acknowledgement command from the terrestrial contr；
The terrestrial contr is communicated with the Transmit-Receive Unit of going into the well by remote cable, for the transmitting-receiving of going into the well
Unit is sent by the order of the direct-reading and programmed computer transmission, and receives data and response life from the Transmit-Receive Unit of going into the well
It enables, is resent to the direct-reading and programmed computer；
The Transmit-Receive Unit of going into the well realizes two-way wireless communication by wireless relay unit and the underground Transmit-Receive Unit, uses
In receiving order that the terrestrial contr is sent by remote cable and be sent to described in the underground Transmit-Receive Unit, reception
The data and acknowledgement command of the transmission of underground Transmit-Receive Unit are simultaneously sent to the terrestrial contr；
The wireless relay unit includes the dipole antenna connecting with the Transmit-Receive Unit of going into the well, and is received with the underground
The transmitting receiving coil of bill member connection, the dipole antenna and transmitting receiving coil couple low frequency electromagnetic by metal tube string
Wave realizes both-way communication；
The underground Transmit-Receive Unit connects the pressure bomb, for receiving the life of the Transmit-Receive Unit transmission of going into the well
It enables, the pressure bomb is monitored and controlled, and the down-hole pressure is counted and is sent to the Transmit-Receive Unit of going into the well；
The pressure bomb, for acquiring or playing back temperature and pressure data, and by the underground Transmit-Receive Unit and
Wireless relay unit is sent to the Transmit-Receive Unit of going into the well.
As an improvement of the present invention, the dipole antenna includes the first metal pipe nipple and the second metal pipe nipple, institute
It states and connection, and sequentially connected described first is separated by insulating sheath pipe nipple among the first metal pipe nipple and the second metal pipe nipple
Metal pipe nipple, insulating sheath pipe nipple and the second metal pipe nipple are hollow tube, and the Transmit-Receive Unit of going into the well is arranged described hollow
Inside pipe, two hard contacts of the Transmit-Receive Unit of going into the well respectively with the first metal pipe nipple and the second metal pipe nipple inner wall
Contact；
The lower end of the second metal pipe nipple connects metal tube string, and the transmitting receiving coil is set in apart from described second
On the metal tube string of the metal pipe nipple lower end less than or equal to 50 meters, the underground Transmit-Receive Unit setting receives line in the transmitting
Near circle, and it is connect by two high temperature wires with the transmitting receiving coil.
Be further improved, the insulating sheath pipe nipple using high-intensitive teflon material, the second metal pipe nipple it is interior
Wall lower end be equipped with retention bead, the first metal pipe nipple, insulating sheath pipe nipple, the second metal pipe nipple both ends be equipped with interior spiral shell
Line or external screw thread；
The transmitting receiving coil includes the magnetic core being wrapped in high-temperature nylon sheath, and is centered around the high-temperature nylon shield
The coil in outside is covered, the magnetic core uses iron based nanocrystalline magnet core material, and the high-temperature nylon sheath is sealed by high-temperature silica gel,
Wire casing is provided on the high-temperature nylon sheath, the coil is wound around the wire casing, and the outer layer of the coil is covered with high temperature
Heat-shrinkable T bush.
It is further improved, the terrestrial contr includes microprocessor, first carrier pulse driver, 48V power supply, the
One signal processing unit and the first current input signal sensor,
The microprocessor is connect by first carrier pulse driver with 48V power supply, and the microprocessor passes through first
Signal processing unit is connect with the first current input signal sensor, the 48V power supply and the first current input signal sensor
It is connect with the remote cable for Transmit-Receive Unit of going into the well described in connection,
After the power pulse modulation for the 10kHz that the microprocessor is used to generate the first carrier pulse driver,
It is loaded on the 48V power supply, the downlink data baud rate for forming average out to 1.2kbps communicates on the remote cable, real
Order now is sent to the Transmit-Receive Unit of going into the well and electric energy is provided；
The first current input signal sensor for induced from the DC voltage of the remote cable it is described under
The current signal that well Transmit-Receive Unit is sent, and the signal induced is sent to first signal processing unit, described first
Signal processing unit is gone out the first current input signal sensor sensing by automatic AGC function and baseline clamper function
Signal is controlled automatically within the scope of certain signal amplitude, is resent to the microprocessor, passes through the end USB by the microprocessor
Mouth is sent to the direct-reading and programmed computer.
It is further improved, the Transmit-Receive Unit of going into the well includes first singlechip, second signal processing unit, the second input letter
Number current sensor, PWM supply convertor, regulated power supply, second carrier pulse driver, double gain signal receiving units and D
Class power transmitter,
The PWM supply convertor is connect with the remote cable and regulated power supply, for providing the remote cable
48V DC power supply copped wave processing, be transformed into 6V voltage, and under the action of the regulated power supply formed 5V regulated power supply, supply
To the Transmit-Receive Unit of going into the well；
The second current input signal sensor and second carrier pulse driver are connect with the remote cable, institute
It states double gain signal receiving units and D class power transmitter is connect with the dipole antenna of the wireless relay unit, it is described
Second current input signal sensor, second signal processing unit, first singlechip, D class power transmitter are sequentially connected, and are used for
Realize that the terrestrial contr sends the downlink communication of order to the underground Transmit-Receive Unit, double gain signals receive single
Member, first singlechip, second carrier pulse driver are sequentially connected, and are controlled for realizing the underground Transmit-Receive Unit to the ground
The uplink communication of unit transmission data and acknowledgement command processed.
It is further improved, the first singlechip is also connected with pressure gauge of going into the well, and the pressure gauge of going into the well is for direct-reading temperature
And pressure data, the order conversion for the 1.2kbps baud rate that the first singlechip is used to send the remote cable downlink
Input to the pressure gauge of going into the well at the order of 38.4kbps baud rate, and by the acquisition data conversion of the pressure gauge of going into the well at
The data of 1.2kbps baud rate are uploaded to the terrestrial contr.
It is further improved, after the D class power transmitter receives the down order of the first singlechip, generates 200Hz
The power sine wave modulated, the downlink baud rate that 200bps is formed after the modulation of PSK modulating mode are transferred to the dipole
Antenna, and the D class power transmitter uses differential output mode, two output lead is connected respectively goes into the well in described
Two hard contacts of Transmit-Receive Unit.
It is further improved, the underground Transmit-Receive Unit includes second singlechip, variable frequency drives, signal receiving unit and electricity
Pond group,
The signal receiving unit is used to receive being transmitted by the Transmit-Receive Unit of going into the well for the transmitting receiving coil transmission
200bps baud rate down order, and be sent to the second singlechip；
The second singlechip is connect with the pressure bomb, and the second singlechip is used to receive the signal single
The order that the order of the 200bps baud rate of member transmission is converted into 38.4kbps baud rate inputs to the pressure bomb, and will
The acquisition data of the pressure bomb send the change at the pwm pulse within the scope of 20-2000Hz by PSK modulation conversion
Frequency driver；
The variable frequency drives are connect with the second singlechip and the transmitting receiving coil, and the variable frequency drives are adopted
Bidirectional drive, the PWM modulated within the scope of the 20-2000Hz for generating the second singlechip by PSK are exported with D class
Pulse group forms 20- to the distance between Transmit-Receive Unit and underground the Transmit-Receive Unit selection of going into the well according to ground order
Line command in baud rate within the scope of 2000bps；
The battery pack is used to provide electric energy for the underground Transmit-Receive Unit and pressure bomb.
It is further improved, double gain signal receiving units have double-range signal receiving circuit, when the receipts of going into the well
Distance selects low gain signal receiving circuit less than 20 meters between bill member and the underground Transmit-Receive Unit, described for receiving
Line command in baud rate within the scope of the 20-2000bps of wireless relay unit uplink transmission modulated by the variable frequency drives；
When the distance between Transmit-Receive Unit and the underground Transmit-Receive Unit of going into the well is greater than 20 meters, selection high gain signal receives circuit,
The wave within the scope of the 20-2000bps modulated by the variable frequency drives for receiving the wireless relay unit uplink transmission
Line command in special rate.
It being further improved, the underground Transmit-Receive Unit further includes dormancy awakening circuit and power supervisor,
The dormancy awakening circuit input end is connect with the signal receiving unit, output end and the second singlechip
The connection of wake-up port, carry out narrow-band filtering, whole for acquiring the signal receiving unit received signal, and to acquisition signal
Shape, pulsewidth differentiation, threshold comparison, then comparing result is transferred to the second singlechip,
The power supervisor is connect with the second singlechip, for the instruction according to the second singlechip, control
Each circuit of the underground Transmit-Receive Unit enters or exits trickle state.
By adopting such a design, the present invention has at least the following advantages:
The present invention is able to achieve the double-direction radio of underground Transmit-Receive Unit and Transmit-Receive Unit of going into the well by setting wireless relay unit
Communication, and then realize the long-range of pressure bomb, underground Transmit-Receive Unit and terrestrial contr and direct-reading and programmed computer
Bidirectional data transfers, then direct-reading and programmed computer can to go into the well pressure gauge and pressure bomb acquisition and storing data it is direct
Extraction and readback, and realize that ground programs.Terrestrial contr can also control go into the well pressure gauge and two pressure bombs it
Between switching, the temperature and pressure data under real-time production wells.
The present invention selects 20- by variable frequency drives according to the distance range of go into the well Transmit-Receive Unit and underground Transmit-Receive Unit
Low frequency electromagnetic signals tranmitting frequency within the scope of 2000bps also passes through setting low gain signal receiving circuit and high gain signal
Circuit is received, short range and long-range two signal range abilities are formed, so that wireless transmission distance expands to 50 meters from 20 meters.
The present invention is Transmit-Receive Unit power supply of going into the well by using 48V power supply and remote cable, and saving is gone into the well in Transmit-Receive Unit
Battery cost so that Transmit-Receive Unit of going into the well is not influenced by cruise duration.
The present invention also passes through setting dormancy awakening circuit and power supervisor, which is responsible for the letter to input
Number differentiated, when confirmation is not ordered, power supervisor control underground Transmit-Receive Unit enters suspend mode, at this time battery pack
Electric current required for two pressure bombs work only is provided, other circuits are minimized all in trickle state, power, make well
Each electronic equipment of lower Transmit-Receive Unit can extend to one month or more from original 1 week in underground long-term work, activity duration,
Substantially increase the operation time in well.
Detailed description of the invention
The above is merely an overview of the technical solutions of the present invention, in order to better understand the technical means of the present invention, below
In conjunction with attached drawing, the present invention is described in further detail with specific embodiment.
Fig. 1 is the structural schematic diagram of teledata double-direction radio well testing system of the present invention.
Fig. 2 is the electrical connection schematic diagram of teledata double-direction radio well testing system of the present invention.
Fig. 3 is that signal processing unit adjusts data progress AGC automatically in teledata double-direction radio well testing system of the present invention
The signal characteristic of whole front and back changes schematic diagram.
Fig. 4 is that signal processing unit carries out baseline pincers to data-signal in teledata double-direction radio well testing system of the present invention
The signal characteristic of position adjustment front and back changes schematic diagram.
Specific embodiment
Referring to shown in attached drawing 1 and Fig. 2, the present embodiment teledata double-direction radio well testing system includes direct-reading and program calculation
Machine 1, terrestrial contr 2, Transmit-Receive Unit 4 of going into the well, pressure gauge of going into the well, wireless relay unit 7, underground Transmit-Receive Unit 5 and underground
Pressure gauge.
The terrestrial contr 2 is communicated with Transmit-Receive Unit 4 of going into the well by remote cable 3 in the present embodiment, for going into the well
Transmit-Receive Unit 4 sends order, and receives data and acknowledgement command from Transmit-Receive Unit 4 of going into the well.
Specifically, the terrestrial contr 2 includes microprocessor 208, first carrier pulse driver 202,48V power supply
201, the first signal processing unit 207 and the first current input signal sensor 206.The microprocessor 208 passes through first carrier
Pulse driver 202 is connect with 48V power supply 201, which passes through the first signal processing unit 207 and the first input
Current sensor signal connection 206, the 48V power supply 201 and the first current input signal sensor 206 with connect the receipts of going into the well
The remote cable 3 of bill member connects.
The power pulse modulation for the 10kHz that the microprocessor 208 is used to generate the first carrier pulse driver 202
Afterwards, it is loaded on the 48V power supply 201, such as 0 signal is modulated to 5 carrier waves, 1 signal is modulated to 10 carrier waves, is formed average
Communicated on the remote cable 3 for the downlink data baud rate of 1.2kbps, realize to this go into the well Transmit-Receive Unit 4 send order and
Electric energy is provided.Then the remote cable 3 is both power circuit and communication line.
The first current input signal sensor 206 is gone into the well for inducing this from the DC voltage of the remote cable 3
The current signal that Transmit-Receive Unit 4 is sent, and the signal induced is sent to 207 yuan of the first signal processing list.First letter
Include filtering processing circuit, automatic AGC control circuit, amplifying circuit and baseline clamp circuit, the AGC in number processing unit 207
Control circuit can make gain adjustment automatically according to the power of signal, and different strong and weak input signals are adjusted amplitude stabilization and exist
2V or so, so terrestrial contr can adapt to the cable of variety classes and different length automatically, offline such as attached drawing 3 is shown
The cable data block signal AGC that physical length is 3000 meters adjusts process will by clamp circuit after adjusted signal amplification
In the pedestals clamper to 0V of signal, clamp circuit can effectively inhibit the superposition due to driving signal, lead to power-supply fluctuation, make
At the floating of signal zero level, such as the offline thin portion for non-clamper front signal of attached drawing 4, Fig. 4 it is online for the signal after clamper it is thin
Portion, the online data block shown after clamper of Fig. 3.Then first signal processing unit 207 can pass the first current input signal
The signal that sensor 206 induces is controlled automatically within the scope of certain signal amplitude, is resent to the microprocessor 208, micro process
To treated, signal further demodulates device 208 is reduced into data-signal, passes through USB port 209 and inputs direct-reading and program calculation
Machine 1.
The terrestrial contr 2 further includes the pressure gauge direct-reading port 204 connecting with the microprocessor 208, the pressure gauge
Direct-reading port 204 is used for direct-connected pressure gauge 210, which is uploaded to the direct-reading and programmed computer 1, and real
The now direct-reading and programmed computer 1 are programmed and are tested to the ground of the pressure gauge 210.
The direct-reading is connect by USB port 209 with the terrestrial contr 2 with programmed computer 1 in the present embodiment, is used for
It sends and orders to the terrestrial contr 2, and receive data and acknowledgement command from the terrestrial contr 2.Wherein the direct-reading with
Programmed computer 1 carries out CRC check to the data from USB port 209, the length operation of combined data string is handled, it is ensured that logical
The reliable of data is interrogated, Piecewise Operation further is used to the reset pressure of extraction and temperature data, is mentioned by calibration coefficient file
The temperature section of confession carries out segmentation floating-point operation, improves operational precision.The computer is integration data processing center, there is voice
Navigation hint has remote transmission and control function, can complete switching between pressure gauge, direct-reading and memory module selection,
Underground distance and journey model selection, underground carrier frequency shift；Has the function of online programmable, it can be achieved that ground or underground pressure
Power meter real-time programming；With data processing function, scrolling display, storage, printing, real-time graph including data are described, storage
The playback of data motion graphics.
Then function may be implemented in the terrestrial contr 2 cooperation direct-reading and programmed computer 1:
1. realizing the both-way communication of the multi-mode of computer and downhole system.
2. the single-frequency point narrowband using 10kHz communicates, the mould of high s/n ratio can be obtained using narrow band filter by making to receive
Quasi- signal, can be influenced to avoid FSK dual-frequency point by cable frequencies response curve, and two frequency bins is caused to receive feature in different cables
There are larger differences.
3. can control three pressure gauges, can mutually switch between three pressure gauges, pressure gauge can be carried out data direct-reading and
Storing data readback.
4. controllable pressure gauge operating mode: direct-reading mode, memory module, direct-reading memory module.
5. computer can be by terrestrial contr to pressure gauge parameter online programming, including mode setting, sample rate, adopts
Number of samples, data storage block.
6. on computer interface, the storing data that pressure bomb any time period may be selected is extracted, overall process is certainly
It is dynamic to carry out, unattended, voice prompting after the completion.
7. computer can select short range or remote mode according to the distance of go into the well Transmit-Receive Unit and underground Transmit-Receive Unit, small
It is short range in 20 meters, it is long-range for being greater than 20 meters.
8. terrestrial contr provides power supply for Transmit-Receive Unit of going into the well, therefore fortuitous event occurs, terrestrial contr can
To reset Transmit-Receive Unit power supply of going into the well, restarts system, avoids accidents.
9. terrestrial contr contains a pressure tap, ground directly-reading and programmed computer can be to direct-connected ground
Surface pressure meter carries out ground test, data readback and data storage.
The Transmit-Receive Unit 4 of going into the well of this in the present embodiment by wireless relay unit 7 and the underground Transmit-Receive Unit 4 realizes two-way nothing
Line communication, for the order sent of the terrestrial contr 2 is received by remote cable 3 and be sent to the underground Transmit-Receive Unit 5,
It receives the data and acknowledgement command that the underground Transmit-Receive Unit 5 is sent and is sent to the terrestrial contr 2.
Wherein, which includes first singlechip 403, the input letter of second signal processing unit 402, second
Number current sensor 401, PWM supply convertor 405, regulated power supply 407, second carrier pulse driver 406, double gain signals
Receiving unit 404 and D class power transmitter 409.
The PWM supply convertor 405 is connect with the remote cable 3 and regulated power supply 407, for mentioning the remote cable 3
The 48V DC power supply copped wave of confession is handled, and is transformed into 6V voltage, and 5V regulated power supply is formed under the action of regulated power supply 407,
Supply the Transmit-Receive Unit 4 of going into the well.
The second current input signal sensor 401 and second carrier pulse driver 406 are connect with remote cable 3,
Double gain signal receiving units 404 and D class power transmitter 409 are connect with the dipole antenna of the wireless relay unit 7,
The second current input signal sensor 401, second signal processing unit 402, first singlechip 403, D class power transmitter
409 are sequentially connected, and send the downlink communication of order to the underground Transmit-Receive Unit 4 for realizing the terrestrial contr 2, this pair increases
Beneficial signal receiving unit 404, first singlechip 403, second carrier pulse driver 406 are sequentially connected, for realizing the underground
Uplink communication of the Transmit-Receive Unit 4 to the terrestrial contr 2 transmission data and acknowledgement command.
After the D class power transmitter 409 receives the down order of the first singlechip 403, the function that 200Hz is modulated is generated
Rate sine wave, the downlink baud rate that 200bps is formed after the modulation of PSK modulating mode are transferred to the dipole antenna, and the D class
Power transmitter 409 uses differential output mode, two output lead, which is connected respectively, goes into the well the two of Transmit-Receive Unit 4 in this
A hard contact.
Double gain signal receiving units 404 have double-range signal receiving circuit, when go into the well Transmit-Receive Unit 4 and the well
When distance is short range between lower Transmit-Receive Unit 5, such as less than 20 meters, low gain signal receiving circuit and first singlechip 403 are selected
It is connected, within the scope of the 20-2000bps modulated by the variable frequency drives 508 for receiving 7 uplink of wireless relay unit transmission
Baud rate on line command, then through first singlechip 403 demodulation after, through transformation modulating mode, driven by first carrier pulse
Dynamic device 406 is loaded on 48V power supply line, is uploaded to terrestrial contr 2；When go into the well Transmit-Receive Unit 4 and the underground transmitting-receiving list
When distance is long-range between member 5, such as larger than 20 meters, selects high gain signal to receive circuit and be connected with first singlechip 403, be used for
Receive the baud rate within the scope of the 20-2000bps of 7 uplink of wireless relay unit transmission modulated by the variable frequency drives 508
Upper line command.
The first singlechip 403 is also connected with well pressure meter 408, and the pressure gauge 408 of going into the well is for direct-reading temperature and pressure
Force data.The first singlechip 403 is for the order for the 1.2kbps baud rate that 3 downlink of remote cable is sent to be converted into
The order of 38.4kbps baud rate inputs to the pressure gauge 408 of going into the well, and by the acquisition data conversion of the pressure gauge 408 of going into the well at
The data of 1.2kbps baud rate are uploaded to the terrestrial contr 2.
Then the function of going into the well Transmit-Receive Unit 4 includes:
1. pressure gauge 408 of pair going into the well carries out baud rate transformation, 38.4kbps baud rate is converted into 1.2kbps baud rate
Pass terrestrial contr 2 and direct-reading and programmed computer 1.
The low frequency electromagnetic signals of 2.200bps baud rate form electromagnetism by wireless relay unit and the metal tube string of connection
The both-way communication with underground Transmit-Receive Unit 5 is realized in circuit.
3. transmission power can be improved since Transmit-Receive Unit 4 of going into the well is by surface power supply, farther distance is covered, and
It need not consider electric energy loss.
4. go into the well Transmit-Receive Unit 4 can according to the setting of ground directly-reading and programmed computer 1, automatically select 20 meters it is below close
The remote transmission of Distance Transmission or 20 meters or more forms double-range mode.
5. can be according to surface instruction, in two pressure bombs of included go into the well pressure gauge and underground Transmit-Receive Unit institute band
Between select switching.
The wireless relay unit 7 includes the dipole antenna connecting with the Transmit-Receive Unit 4 of going into the well in the present embodiment, and with this
The transmitting receiving coil 6 that underground Transmit-Receive Unit 5 connects, the dipole antenna and transmitting receiving coil 6 pass through 11 coupling of metal tube string
It closes low-frequency electromagnetic wave and realizes both-way communication.
Wherein, which includes the first metal pipe nipple 701 and the second metal pipe nipple 702, the first metal pipe nipple
701 and second separate connection, and the sequentially connected first metal pipe nipple by insulating sheath pipe nipple 9 among metal pipe nipple 702
701, insulating sheath pipe nipple 9 and the second metal pipe nipple 702 are hollow tube, which is hung by remote cable 3 drops
Enter the hollow tube, two hard contacts 10 of the Transmit-Receive Unit 4 of going into the well respectively with the first metal pipe nipple 701 and the second gold medal
Belong to 702 inner wall of pipe nipple and keeps good electrical contact.
The lower end of the second metal pipe nipple 702 connects metal tube string 11, the transmitting receiving coil 6 be set in apart from this second
On the metal tube string 11 of 702 lower end of metal pipe nipple less than or equal to 50 meters, the underground Transmit-Receive Unit 5 setting receives line in the transmitting
Near circle 6, and it is connect by two high temperature wires with the transmitting receiving coil 6.
Insulating sheath pipe nipple 9 is using high-intensitive teflon material in the embodiment.The first metal pipe nipple 701, insulation shield
Cover pipe nipple 9, the both ends of the second metal pipe nipple 702 are equipped with internal screw thread or external screw thread, then the side that the three is connected with threaded coaxial
Formula is tightly connected, and is proof strength, and insulated part guarantees that the smallest isolation distance, threaded portion guarantee that screw thread as long as possible connects
Connect distance.And the inner wall lower end of the second metal pipe nipple 702 is equipped with retention bead 8, goes into the well Transmit-Receive Unit 4 in for limiting
Position in blank pipe, two live metal contacts 10 of the Transmit-Receive Unit 4 that makes to go into the well be isolated respectively with by insulating sheath pipe nipple 9 two
A metal pipe nipple 701,702 contacts naturally, forms two horns of the dipole antenna.
The transmitting receiving coil 6 is wrapped in the magnetic core in high-temperature nylon sheath, and is centered around the high-temperature nylon sheath
The coil in outside.The magnetic core uses iron based nanocrystalline magnet core material 1k107, which uses PA6T, and leads to
High temperature silica gel sealing is crossed, is provided with wire casing on the high-temperature nylon sheath, which winds around the wire casing, and the outer layer of the coil covers
There is high temperature heat-shrinkable T bush.
The underground Transmit-Receive Unit 5 connects pressure bomb in the present embodiment, for receiving the transmission of Transmit-Receive Unit 4 of going into the well
It orders, the pressure bomb is monitored and controlled, and the down-hole pressure is counted and is sent to the Transmit-Receive Unit 4 of going into the well.The underground
Pressure gauge is sent for acquiring or playing back temperature and pressure data, and by the underground Transmit-Receive Unit 5 and wireless relay unit 7
Give the Transmit-Receive Unit 4 of going into the well.
The underground Transmit-Receive Unit 5 includes second singlechip 505, variable frequency drives 508, signal receiving unit 503 and battery
Group 504.
The signal receiving unit 503 be used for receive the transmitting receiving coil 6 transmission go into the well what Transmit-Receive Unit 4 transmitted by this
The down order of 200bps baud rate, and it is sent to the second singlechip 505.
The second singlechip 505 is connect with the pressure bomb, the 200bps for transmitting the signal receiving unit 503
The order that the order of baud rate is converted into 38.4kbps baud rate inputs to the pressure bomb.The second singlechip 505 also from
Pressure bomb acquires the temperature, pressure data of 38.4kbps baud rate, and changes driving output pulse by control and account for
Than, pulse group period length, pulse group positive-negative polarity, the low-frequency electromagnetic wave of variable cycle is generated, such as by the pressure bomb
506,507 acquisition data conversion sends the variable frequency drives at the sine wave by PSK modulation within the scope of 20-2000Hz
508.It includes two pressure bombs that down-hole pressure, which is haggled over excellent, in the present embodiment, such as pressure bomb 506 and 507.
The variable frequency drives 508 are connect with the second singlechip 505 and the transmitting receiving coil 6.The change in the present embodiment
Frequency driver 508 exports bidirectional drive using D class, passes through within the scope of the 20-2000Hz for generating the second singlechip 505
The pwm pulse group for crossing PSK modulation, according to ground order to the distance between Transmit-Receive Unit 4 and underground Transmit-Receive Unit 5 selection of going into the well
Form line command in the baud rate within the scope of 20-2000bps.It is to adapt in different distance, no using the advantages of frequency conversion drive
With the environment of fluid media (medium) and stratum media, higher rate can be closely used, data throughout is improved, can be used at a distance low
Rate guarantee data reliability, carrier wave take PSK to modulate, therefore modulated wave frequency and Transmission bit rate are consistent.
The battery pack 504 is used to provide electric energy for the underground Transmit-Receive Unit 5 and pressure bomb.
It is further improved, which further includes dormancy awakening circuit 502 and power supervisor 501.
502 input terminal of dormancy awakening circuit is connect with the signal receiving unit 503, output end and the second singlechip
505 wake-up port connection carries out narrowband filter for acquiring 503 received signal of signal receiving unit, and to acquisition signal
Wave, shaping, pulsewidth differentiation, threshold comparison, then comparing result is transferred to the second singlechip 505.The power supervisor 501 with
The second singlechip 505 connection, for managing dormancy awakening circuit 502, according to the instruction of the second singlechip 505, control should
Each circuit of underground Transmit-Receive Unit 5 enters or exits trickle state.
Such as when 505 suspend mode port of second singlechip is more than that 30 points of kinds do not receive signal, second singlechip 505 will start electricity
Source manager 501, power supervisor 501 will control each power unit and enter trickle state, and second singlechip 505 also enters suspend mode
State only stays a wake-up port to be in monitoring state, once having detected command signal, suspend mode will be interrupted, the second monolithic
505 startup power supply manager 501 of machine, controls each power unit and enters working condition.The battery pack 504 is pressure bomb at this time
506,507 power supply circuit is independent, not by the management of power supervisor 501.
Then the underground Transmit-Receive Unit 5 has following function:
1. pair pressure bomb baud rate converts, it converts the order of the 200bps baud rate of downlink to the life of 38.4kbps
Pressure bomb is given in order, then the down-hole pressure of 38.4kpbs is counted and is converted into frequency conversion drive range 20-2000bps's
PSK low frequency modulations wave.
2. can switch mutually between two pressure bombs according to the order received, and select setting operating mode
For memory module or read-only storage composite mode.
3. downlink determines frequency PSK modulating mode using 200bps's, uplink uses frequency conversion PSK modulating mode, realizes receipts of going into the well
The both-way communication of bill member and underground Transmit-Receive Unit.
4. battery pack 504 is managed by power supervisor 501, underground Transmit-Receive Unit 5 enters suspend mode tiny stream when without order input
Stream mode, when waking up Port detecting to when having order, underground Transmit-Receive Unit 5 is waken up into working condition.
5. the wireless communication range of go into the well at present Transmit-Receive Unit 4 and underground Transmit-Receive Unit 5 reaches 50 meters, used less than 20 meters
Short range mode is greater than 20 meters and uses remote mode.
6. pressure bomb 506,507 can receive the programming of ground directly-reading Yu programmed computer 1, online setting pressure gauge
Sample rate, sampling number and sampling section.
The working principle of well testing system of the present invention are as follows: when downlink communication, the direct-reading on ground and programmed computer 1 pass through USB
Control unit 2 sends order to the ground for port 209, and the downlink signal of 1.2kbps baud rate is converted into through terrestrial contr 2,
Transmit-Receive Unit 4 of going into the well is passed to by cable 3, the low frequency electromagnetic of the 200bps of PSK modulation is transformed into Transmit-Receive Unit 4 of going into the well
Signal is launched by two metal electrode arms 701 and 702 of dipole antenna two contacts 10 of wave, Transmit-Receive Unit 4 of going into the well
It goes, underground Transmit-Receive Unit 5 and transmitting receiving coil 6 connection, transmitting receiving coil 6 receive the low-frequency electromagnetic wave induced electricity
Signal is flowed, filtering, amplification are demodulated by second singlechip 505, and down-hole pressure is sent into the order for being transformed into 38.4kbps baud rate
Meter 506,507.
When well testing system uplink communication of the present invention, underground Transmit-Receive Unit 5 comes from down-hole pressure for 38.4kbps baud rate
The data of meter 506 or 507 are converted into the low frequency psk modulation signal of baud rate within the scope of 20-2000bps, by receiving and dispatching with underground
The transmitting receiving coil 6 that unit 5 connects is launched, and the dipole antenna of wireless relay unit 7 senses the low frequency electromagnetic
After signal, current signal is imported by Transmit-Receive Unit 4 of going into the well by hard contact 10, Transmit-Receive Unit 4 of going into the well converts the signal into
The data flow of 1.2kbps baud rate is loaded on cable 48V voltage by carrier wave, is sent to terrestrial contr 2, ground is straight
It reads to issue memory block area reading order with programmed computer 1, finally by the corresponding memory block area acquisition of pressure bomb 506 or 507
Temperature and pressure data extract ground system, carry out calculation process.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, this
Field technical staff makes a little simple modification, equivalent variations or modification using the technology contents of the disclosure above, all falls within this hair
In bright protection scope.
Claims (10)
1. a kind of teledata double-direction radio well testing system, which is characterized in that including direct-reading and programmed computer, ground control list
Member, Transmit-Receive Unit of going into the well, wireless relay unit, underground Transmit-Receive Unit and pressure bomb,
The direct-reading is connect by USB port with the terrestrial contr with programmed computer, for controlling to the ground
Unit sends order, and receives data and acknowledgement command from the terrestrial contr；
The terrestrial contr is communicated with the Transmit-Receive Unit of going into the well by remote cable, for the Transmit-Receive Unit of going into the well
It sends by the order of the direct-reading and programmed computer transmission, and receives data and acknowledgement command from the Transmit-Receive Unit of going into the well,
It is resent to the direct-reading and programmed computer；
The Transmit-Receive Unit of going into the well realizes two-way wireless communication by wireless relay unit and the underground Transmit-Receive Unit, for leading to
Remote cable is crossed to receive order that the terrestrial contr is sent and be sent to the underground Transmit-Receive Unit, receive the underground
The data and acknowledgement command of Transmit-Receive Unit transmission are simultaneously sent to the terrestrial contr；
The wireless relay unit includes the dipole antenna connecting with the Transmit-Receive Unit of going into the well, and receives and dispatches list with the underground
The transmitting receiving coil that member connects, the dipole antenna and transmitting receiving coil couple low-frequency electromagnetic wave reality by metal tube string
Existing both-way communication；
The underground Transmit-Receive Unit connects the pressure bomb, for receiving order, the prison of the Transmit-Receive Unit transmission of going into the well
The pressure bomb is surveyed and controlled, and the down-hole pressure is counted and is sent to the Transmit-Receive Unit of going into the well；
The pressure bomb, for acquiring or playing back temperature and pressure data, and by the underground Transmit-Receive Unit and wirelessly
Relay unit is sent to the Transmit-Receive Unit of going into the well.
2. teledata double-direction radio well testing system according to claim 1, which is characterized in that the dipole antenna packet
The first metal pipe nipple and the second metal pipe nipple are included, it is short to pass through insulating sheath among the first metal pipe nipple and the second metal pipe nipple
Section separates connection, and the sequentially connected first metal pipe nipple, insulating sheath pipe nipple and the second metal pipe nipple are hollow tube,
The Transmit-Receive Unit setting of going into the well in the hollow tube, two hard contacts of the Transmit-Receive Unit of going into the well respectively with it is described
First metal pipe nipple and the contact of the second metal pipe nipple inner wall；
The lower end of the second metal pipe nipple connects metal tube string, and the transmitting receiving coil is set in apart from second metal
On the metal tube string of the pipe nipple lower end less than or equal to 50 meters, the underground Transmit-Receive Unit setting is attached in the transmitting receiving coil
Closely, and by two high temperature wires it is connect with the transmitting receiving coil.
3. teledata double-direction radio well testing system according to claim 2, which is characterized in that the insulating sheath pipe nipple
Using high-intensitive teflon material, the inner wall lower end of the second metal pipe nipple is equipped with retention bead, the first metal pipe nipple,
Insulating sheath pipe nipple, the second metal pipe nipple both ends be equipped with internal screw thread or external screw thread；
The transmitting receiving coil includes the magnetic core being wrapped in high-temperature nylon sheath, and is centered around outside the high-temperature nylon sheath
The coil of side, the magnetic core use iron based nanocrystalline magnet core material, and the high-temperature nylon sheath is sealed by high-temperature silica gel, described
Wire casing is provided on high-temperature nylon sheath, the coil is wound around the wire casing, and the outer layer of the coil is covered with high temperature pyrocondensation
Casing.
4. teledata double-direction radio well testing system according to claim 1, which is characterized in that the terrestrial contr
It is passed including microprocessor, first carrier pulse driver, 48V power supply, the first signal processing unit and the first current input signal
Sensor,
The microprocessor is connect by first carrier pulse driver with 48V power supply, and the microprocessor passes through the first signal
Processing unit is connect with the first current input signal sensor, the 48V power supply and the first current input signal sensor with
Go into the well described in connection Transmit-Receive Unit remote cable connection,
After the power pulse modulation for the 10kHz that the microprocessor is used to generate the first carrier pulse driver, load
Onto the 48V power supply, formed average out to 1.2kbps downlink data baud rate communicated on the remote cable, realize to
The Transmit-Receive Unit of going into the well sends order and provides electric energy；
The first current input signal sensor from the DC voltage of the remote cable for inducing the receipts of going into the well
The current signal that bill member is sent, and the signal induced is sent to first signal processing unit, first signal
The signal that processing unit is gone out the first current input signal sensor sensing by automatic AGC function and baseline clamper function
It is controlled automatically within the scope of certain signal amplitude, is resent to the microprocessor, passed by the microprocessor by USB port
It send to the direct-reading and programmed computer.
5. teledata double-direction radio well testing system according to claim 4, which is characterized in that the Transmit-Receive Unit of going into the well
Including first singlechip, second signal processing unit, the second current input signal sensor, PWM supply convertor, pressure stabilizing electricity
Source, second carrier pulse driver, double gain signal receiving units and D class power transmitter,
The PWM supply convertor is connect with the remote cable and regulated power supply, the 48V for providing the remote cable
DC power supply copped wave processing, is transformed into 6V voltage, and 5V regulated power supply is formed under the action of the regulated power supply, described in supply
It goes into the well Transmit-Receive Unit；
The second current input signal sensor and second carrier pulse driver are connect with the remote cable, described double
Gain signal receiving unit and D class power transmitter are connect with the dipole antenna of the wireless relay unit, and described second
Current input signal sensor, second signal processing unit, first singlechip, D class power transmitter are sequentially connected, for realizing
The downlink communication that the terrestrial contr is ordered to underground Transmit-Receive Unit transmission, double gain signal receiving units,
First singlechip, second carrier pulse driver are sequentially connected, and are controlled for realizing the underground Transmit-Receive Unit to the ground
The uplink communication of unit transmission data and acknowledgement command.
6. teledata double-direction radio well testing system according to claim 5, which is characterized in that the first singlechip is also
Pressure gauge of going into the well is connected, for the pressure gauge of going into the well for direct-reading temperature and pressure data, the first singlechip is used for will be described
The order that the order for the 1.2kbps baud rate that remote cable downlink is sent is converted into 38.4kbps baud rate inputs to described go into the well
Pressure gauge, and the acquisition data conversion of the pressure gauge of going into the well is uploaded to the ground at the data of 1.2kbps baud rate and is controlled
Unit processed.
7. teledata double-direction radio well testing system according to claim 5, which is characterized in that the D class power emission
After device receives the down order of the first singlechip, the power sine wave that 200Hz is modulated is generated, through PSK modulating mode tune
The downlink baud rate that 200bps is formed after system is transferred to the dipole antenna, and the D class power transmitter is defeated using difference
Mode out, two output lead are connected respectively two hard contacts in the Transmit-Receive Unit of going into the well.
8. teledata double-direction radio well testing system according to claim 7, which is characterized in that the underground Transmit-Receive Unit
Including second singlechip, variable frequency drives, signal receiving unit and battery pack,
The signal receiving unit be used for receive it is described transmitting receiving coil transmission by it is described go into the well Transmit-Receive Unit transmission
The down order of 200bps baud rate, and it is sent to the second singlechip；
The second singlechip is connect with the pressure bomb, and the second singlechip is for passing the signal receiving unit
The order that the order for the 200bps baud rate sent is converted into 38.4kbps baud rate inputs to the pressure bomb, and will be described
The acquisition data of pressure bomb send the frequency conversion at the pwm pulse within the scope of 20-2000Hz by PSK modulation conversion and drive
Dynamic device；
The variable frequency drives are connect with the second singlechip and the transmitting receiving coil, and the variable frequency drives use D
Class exports bidirectional drive, the PWM arteries and veins modulated within the scope of the 20-2000Hz for generating the second singlechip by PSK
Group is rushed, 20-2000bps is formed to the distance between Transmit-Receive Unit and underground the Transmit-Receive Unit selection of going into the well according to ground order
Line command in baud rate in range；
The battery pack is used to provide electric energy for the underground Transmit-Receive Unit and pressure bomb.
9. teledata double-direction radio well testing system according to claim 8, which is characterized in that double gain signals connect
Receiving unit has double-range signal receiving circuit, when the distance between Transmit-Receive Unit and the underground Transmit-Receive Unit of going into the well is less than
20 meters, select low gain signal receiving circuit, for receive wireless relay unit uplink transmission by the frequency conversion drive
Line command in baud rate within the scope of the 20-2000bps of device modulation；When Transmit-Receive Unit and the underground Transmit-Receive Unit of going into the well
Between distance be greater than 20 meters, select high gain signal to receive circuit, for receive wireless relay unit uplink transmission by
Line command in baud rate within the scope of the 20-2000bps of the variable frequency drives modulation.
10. teledata double-direction radio well testing system according to claim 8, which is characterized in that the underground transmitting-receiving is single
Member further includes dormancy awakening circuit and power supervisor,
The dormancy awakening circuit input end is connect with the signal receiving unit, and output end is called out with the second singlechip
Wake up port connection, for acquiring the signal receiving unit received signal, and to acquisition signal carry out narrow-band filtering, shaping,
Pulsewidth differentiation, threshold comparison, then comparing result is transferred to the second singlechip,
The power supervisor is connect with the second singlechip, for the instruction according to the second singlechip, described in control
Each circuit of underground Transmit-Receive Unit enters or exits trickle state.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811197491.8A CN109083638A (en) | 2018-10-15 | 2018-10-15 | A kind of teledata double-direction radio well testing system |
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| CN201811197491.8A CN109083638A (en) | 2018-10-15 | 2018-10-15 | A kind of teledata double-direction radio well testing system |
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| CN109723432A (en) * | 2019-03-13 | 2019-05-07 | 中国石油大学(华东) | A kind of control of downhole detection device and charging system |
| CN110611516A (en) * | 2019-10-28 | 2019-12-24 | 贵州航天凯山石油仪器有限公司 | Wireless communication device suitable for oil field downhole instrument |
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| CN115680632A (en) * | 2022-12-30 | 2023-02-03 | 中国石油天然气股份有限公司 | Underground micro-current signal wireless uploading method and device |
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