CN107524436A - One kind crosses sleeve pipe underground survey cable multiplexer and its method of work - Google Patents
One kind crosses sleeve pipe underground survey cable multiplexer and its method of work Download PDFInfo
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- CN107524436A CN107524436A CN201710534628.3A CN201710534628A CN107524436A CN 107524436 A CN107524436 A CN 107524436A CN 201710534628 A CN201710534628 A CN 201710534628A CN 107524436 A CN107524436 A CN 107524436A
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- cable
- core
- cable core
- downhole instrument
- sleeve pipe
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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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/18—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging
- G01V3/20—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with propagation of electric current
- G01V3/22—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with propagation of electric current using dc
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
Abstract
The present invention relates to one kind to cross sleeve pipe underground survey cable multiplexer and its method of work, the sleeve pipe underground survey cable multiplexer of crossing connects ground system and downhole instrument using the first, second, third and fourth cable core of seven core cable by supply transformer, and the adjustable alternating current of ground system is converted into direct current and is supplied to downhole instrument；Ground communications control system and downhole communication control system are connected by Telecommunication Transformers using the five, the 6th cables core of seven core cable, carries out the communication signal transmissions of ground system and downhole instrument, while the alternating-current power supply transmission cable also as motor；Using the 7th cable core connection well head and underground voltage acquisition plate of seven core cable, the transmission with reference to U electrode signals is carried out.Due to the cable core Limited Number of seven core cable, power supply and signal can be multiplexed cable core, using equilibrium principle, cleverly connect each loop, it is possible on seven core cable not only transmission signal but also give downhole instrument power supply, reach balanced feeding using Phantom Power.
Description
Technical field
The present invention relates to the well earth communication system field in through casing resistivity logging technology, and in particular to one kind crosses sleeve pipe
Underground survey cable multiplexer and its method of work.
Background technology
Logging cable is used for the operation such as all kinds of oil, the well logging of gas well, perforation, coring, can be used for water conservancy hydrographic survey,
Coal exploration, geothermal logging etc., various parameters under detecting shaft are carried out, are conducts between ground system and underground equipment
Hang the connecting line of reconnection and transmission measurement data.
The important function of logging cable is exactly to convey between various downhole probes, transmission ground control system and downhole instrument
Various signals, obtain the depth location of down-hole information, it is seven core cable that its is conventional.
At present, existing to cross seven core cable in sleeve pipe, four cores are used for the transmission of high current, and a core is that ground the earth is joined
Signal U is examined, a core is the power supply of 150V power supplys and communication multiplexing, a core is motor and solenoid valve power line in addition.Work as instrument
When device works, motor works first, decontrols probe, and then instrument sends the collection that high current carries out data, finally closes big electricity
Stream, then the data transfer with ground is carried out, next data information transfer will be gathered to ground system.The collection of instrument and data
Transmission is carried out separately, at the same power supply enter instrument after need to be filtered processing by bulky capacitor, due to the presence of electric capacity
So that the temperature in use of instrument is limited.Cable is crossed in sleeve pipe prior art is present the defects of：
1. system effectiveness is than relatively low, testing time length；
2. instrument can not realize the effect adopted and passed when working；
3. it is excessive to launch influence of the high current to gathering signal；
4. the excessive increase manufacturing cost of the filter capacitor capacity of dc source, again limit the temperature in use of instrument.
In the prior art, Publication No. CN201835827U Chinese utility model patent discloses a kind of stone in the field
The multiplexer of oil well logging cable core, for the data transfer and system power supply between ground installation and downhole instrument, but the device
Structure and effect can not meet current requirement.
The content of the invention
In order to solve sleeve pipe underground survey cable existing technical problem in the prior art, the invention provides one kind
Sleeve pipe underground survey cable multiplexer and its method of work are crossed, is communicated and is passed using the 5th of seven core cable the, 6 cables core
The power supply of transmission of electricity machine, transmit high current using the 1st of seven core cable the, 2,3,4 cables core and carried simultaneously for each circuit board in underground
For working power, by the use of the 7th cable core of seven core cable as U reference voltages, due to cable core Limited Number, seven cores electricity is being used
When cable transmits, power supply and information transfer need to share cable core, and because the frequency of power supply and data-signal is different, then power supply and letter
Number can be multiplexed cable core, using equilibrium principle, cleverly connect each loop, it is possible on seven core cable not only transmission signal but also
Powered to downhole instrument, that is, reach the mode of balanced feeding using Phantom Power.
To achieve these goals, the present invention adopts the following technical scheme that.
First, the invention discloses one kind to cross sleeve pipe underground survey cable multiplexer.
The present invention's crosses sleeve pipe underground survey cable multiplexer, using seven core cable as ground system and downhole instrument
Power cable and collection for downhole instrument and transmission data working power, the first cable of the seven core cable are provided
Core, the second cable core, the 3rd cable core, the 4th cable core connect ground system and downhole instrument by supply transformer, by ground
The adjustable alternating current of plane system is converted to direct current and is supplied to downhole instrument；5th cable core of the seven core cable, the 6th
Cable core connects ground communications control system and downhole communication control system by Telecommunication Transformers, carries out ground system and underground
The communication signal transmissions of instrument, while the alternating-current power supply transmission cable also as motor；7th cable of the seven core cable
Core connects well head and underground voltage acquisition plate, carries out the transmission with reference to U electrode signals.
Preferably, the ground system provides adjustable alternating current using the first Alternating Current Power Supply panel, is become by powering
Depressor be coupled to the first cable core of seven core cable, the second cable core, the 3rd cable core, on the 4th cable core, by the first cable
Core, the second cable core and the 3rd cable core, the 4th cable core carry out the transmission of adjustable alternating current.
In any of the above-described technical scheme preferably, the downhole instrument by supply transformer from seven core cable the
One cable core, the second cable core, the 3rd cable core, adjustable alternating current is obtained on the 4th cable core, pass through AC/DC converting units
Obtain direct current.
In any of the above-described technical scheme preferably, the first Alternating Current Power Supply panel is arranged on time of supply transformer
Level coil sides.
In any of the above-described technical scheme preferably, first cable core, the second cable core and the 3rd cable
Core, the 4th cable core are parallel to the primary side of supply transformer respectively.
In any of the above-described technical scheme preferably, the AC/DC converting units include rectifier bridge and filtration module.
In any of the above-described technical scheme preferably, the adjustable exchange of the first Alternating Current Power Supply panel output 50HZ
Electricity, 50HZ adjustable alternating current is by supply transformer coupled to the first cable core of seven core cable, the second cable core, the 3rd
Cable core, the 4th cable core, the first cable core, the second cable core and the 3rd cable core, the 4th cable core transmit adjustable exchange
Electricity to AC/DC converting units carry out AC/DC conversion, and 60-180V dc source is provided for downhole instrument.
In any of the above-described technical scheme preferably, the ground system is provided with current source panel, the ground system
System connects current source panel by single electric current line.
In any of the above-described technical scheme preferably, the downhole instrument is provided with electric current change-over panel, the downhole instrument
Device connects electric current change-over panel by single electric current line.
In any of the above-described technical scheme preferably, the supply transformer is provided with two primary coils and one time
Level coil, the parameter of described two primary coils are symmetrical.
In any of the above-described technical scheme preferably, the supply transformer includes iron core, line bag and lead, described to draw
Line includes six roots of sensation primary coil lead and two secondary coil leads.
In any of the above-described technical scheme preferably, the ground system is provided adjustable using the second Alternating Current Power Supply panel
Formula alternating current, using the cable skin of seven core cable as loop, adjustable alternating current is transmitted to downhole electrical motor and hydraulic valve power switching
Circuit board, working power is provided for motor or magnetic valve.
In any of the above-described technical scheme preferably, the adjustable alternating current frequency of the second Alternating Current Power Supply panel output
Rate is 50HZ.
In any of the above-described technical scheme preferably, the ground communications control system passes through single electric current line connection the
Two Alternating Current Power Supply panels.
In any of the above-described technical scheme preferably, the downhole communication control system connects electricity by single electric current line
Machine and hydraulic valve power switching circuit board.
In any of the above-described technical scheme preferably, the ground communications transmitter module of the ground communications control system and
The 5th cable core, the 6th cable core that ground communications receiving module passes through Telecommunication Transformers coupling communication signal to seven core cable
On, the 5th cable core, the 6th cable core differential transfer signal of communication to the underground of downhole communication control system of seven core cable lead to
Interrogate transmitter module and downhole communication receiving module.
Secondly, the invention also discloses a kind of method of work for crossing sleeve pipe underground survey cable multiplexer.
The method of work for crossing sleeve pipe underground survey cable multiplexer of the present invention, covered using crossing described in as above any one
Pipe underground survey cable multiplexer, the method for work comprise the following steps：
Step 1, in the work of ground system and downhole instrument, ground system provides 50HZ using the first Alternating Current Power Supply panel
Adjustable alternating current, 50HZ adjustable alternating current is coupled to the first cable core of seven core cable, by supply transformer
Two cables core, the 3rd cable core, on the 4th cable core, by the first cable core, the second cable core and the 3rd cable core, the 4th cable
Core transmission 50HZ adjustable alternating current arrives downhole instrument, and downhole instrument will be electric from the first of seven core cable by supply transformer
Cable core, the second cable core, the 3rd cable core, the adjustable alternating currents of 50HZ that obtain on the 4th cable core are through AC/DC converting units
Obtain direct current in a manner of rectifier bridge and filtration module, the direct current can supply district be 60-180V；
Step 2, ground system input that high current that single electric current line obtains is connected to seven core cable by supply transformer
One cable core, the second cable core, the 3rd cable core, on the 4th cable core, downhole instrument is adopted exports single electricity in a like fashion
Streamline is connected to electric current reversing plate, using the earth as loop；
Step 3, fiveth cable core, sixth cable core differential transfer communication letter of the ground communications control system by seven core cable
Number, communications can be carried out simultaneously at the transmitting high current moment, and power supply power supply is independent of each other with communication signal transmissions；
Step 4, the motor and hydraulic valve power switching circuit board of downhole instrument couple the of seven core cable by Telecommunication Transformers
Five cables core, the 6th cable core transmission alternating current in parallel, using cable skin as transmission loop；
Step 5, well head connect the voltage acquisition plate of underground, the 7th electricity of seven core cable by the 7th cable core of seven core cable
Cable core transmits the reference signal of U electrodes.
The present invention's crosses sleeve pipe underground survey cable multiplexer and its method of work, crosses the multiplexing of sleeve pipe underground survey cable
Device is using seven core cable as the collection of ground system and the power cable and downhole instrument of downhole instrument and transmission data
Working power is provided；The first cable core, the second cable core, the 3rd cable core, the 4th cable core of seven core cable are become by powering
Depressor connects ground system and downhole instrument, and the adjustable alternating current of ground system is converted into direct current and is supplied to downhole instrument
Device；5th cable core of seven core cable, the 6th cable core connects ground communications control system by Telecommunication Transformers and underground leads to
Control system is interrogated, carries out the communication signal transmissions of ground system and downhole instrument, while the alternating-current power supply also as motor passes
Defeated cable；The 7th cable core connection well head and the underground voltage acquisition plate of seven core cable, carry out the transmission with reference to U electrode signals.
Using sleeve pipe underground survey cable multiplexer carry out through casing resistivity logging work, ground system using first exchange supply
The adjustable alternating current that electric panel provides, adjustable alternating current are coupled to the first cable of seven core cable by supply transformer
Core, the second cable core, the 3rd cable core, on the 4th cable core, by the first cable core, the second cable core and the 3rd cable core,
Four cables core transmit adjustable alternating current and arrive downhole instrument, and downhole instrument will be electric from the first of seven core cable by supply transformer
Cable core, the second cable core, the 3rd cable core, obtain on the 4th cable core adjustable alternating current obtained through AC/DC converting units it is straight
Stream electricity；Ground system inputs the first cable that the high current that single electric current line obtains is connected to seven core cable by supply transformer
Core, the second cable core, the 3rd cable core, on the 4th cable core, downhole instrument is adopted to be exported single electric current line and connects in a like fashion
Electric current reversing plate is connected to, using the earth as loop；The 5th cable core, the 6th cable that ground communications control system passes through seven core cable
Core differential transfer signal of communication, communications, and power supply power supply and signal of communication can be carried out simultaneously at the transmitting high current moment
Transmission is independent of each other；The motor and hydraulic valve power switching circuit board of downhole instrument couple seven core cable by Telecommunication Transformers
5th cable core, the 6th cable core transmission alternating current in parallel, using cable skin as transmission loop；The 7th electricity that well head passes through seven core cable
Cable core connects the voltage acquisition plate of underground, the reference signal of the 7th cable core transmission U electrodes of seven core cable.
Compared with prior art, above-mentioned technical proposal of the invention has the advantages that：
1st, downhole instrument can be adopted and passed, and shorten the acquisition time of downhole instrument, while avoid downhole instrument in underground
Usage time it is long, then extend the service life of instrument；
2nd, the temperature in use of downhole instrument is not limited by filter capacitor, so that the field of employment of downhole instrument is wider；
The interference that high current is transmitted to signal when the 3rd, reducing data acquisition, gathered data are more accurate.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is to cross sleeve pipe underground survey cable multiplexer and its a preferred embodiment of method of work according to the present invention
Cross sleeve pipe underground survey cable multiplexer circuit theory schematic diagram；
Fig. 2 is the C for crossing sleeve pipe underground survey cable multiplexer and its a preferred embodiment of method of work according to the present invention
Shaped iron core supply transformer wiring schematic diagram；
Fig. 3 is the C for crossing sleeve pipe underground survey cable multiplexer and its a preferred embodiment of method of work according to the present invention
Shaped iron core supply transformer structural front view；
Fig. 4 is the C for crossing sleeve pipe underground survey cable multiplexer and its a preferred embodiment of method of work according to the present invention
Shaped iron core supply transformer structural side view；
Reference：
1st, iron core, 2, line bag, 3, lead.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
In order to overcome sleeve pipe underground survey cable the problems of in the prior art：Through casing resistivity logging mistake
Cheng Zhong, ground system efficiency is low, testing time length, and downhole instrument can not realize to adopt and pass that transmitting high current is to letter when working
Number influence is excessive, the excessive increase manufacturing cost of filter capacitor capacity of dc source, limits the temperature in use of downhole instrument again.This
Inventive embodiments propose it is a kind of cross sleeve pipe underground survey cable multiplexer and its method of work, using the 1st of seven core cable the, 2,
3rd, 4 cables core transmission high current simultaneously provides working power for each circuit board in underground simultaneously, utilizes the 5th of seven core cable the, 6 cables
Core communicate and the power supply of transmission electrical machine, by the use of the 7th cable core of seven core cable as U reference voltages, due to cable core number
Limited, when being transmitted using seven core cable, power supply and information transfer need to share cable core, and due to power supply and the frequency of data-signal
Rate is different, then power supply and signal can be multiplexed cable core, using equilibrium principle, cleverly connect each loop, it is possible in seven cores
Not only transmission signal but also downhole instrument power supply was given on cable, that is, reached using Phantom Power the mode of balanced feeding.
Embodiment 1
Cross sleeve pipe underground survey cable multiplexer use seven core cable as the power cable of ground system and downhole instrument with
And seven core cable is used to provide working power for the collection of downhole instrument and transmission data.
As shown in figure 1, cross sleeve pipe underground survey cable multiplexer described in the present embodiment：First cable of seven core cable
Core, the second cable core, the 3rd cable core, the 4th cable core（1#、2#、3#、4#）By supply transformer connect ground system with
Downhole instrument, the adjustable alternating current of ground system is converted into direct current and is supplied to downhole instrument；5th electricity of seven core cable
Cable core, the 6th cable core（5#、6#）Ground communications control system and downhole communication control system are connected by Telecommunication Transformers, is entered
The communication signal transmissions of row ground system and downhole instrument, while the alternating-current power supply transmission cable also as motor；Seven cores electricity
7th cable core of cable（7#）Well head and underground voltage acquisition plate are connected, carries out the transmission with reference to U electrode signals.
Sleeve pipe underground survey cable multiplexer is crossed described in the present embodiment, ground system uses the first Alternating Current Power Supply panel
I provides adjustable alternating current, and the first cable core, the second cable core, the 3rd electricity of seven core cable are coupled to by supply transformer
Cable core, the 4th cable core（1#、2#、3#、4#）On, by the first cable core, the second cable core（1#、2#）With the 3rd cable core,
Four cables core（3#、4#）Carry out the transmission of adjustable alternating current；Downhole instrument by supply transformer from seven core cable first
Cable core, the second cable core, the 3rd cable core, the 4th cable core（1#、2#、3#、4#）It is upper to obtain adjustable alternating current, pass through
AC/DC converting units obtain direct current；AC/DC converting units include rectifier bridge and filtration module；First Alternating Current Power Supply panel I is set
Put the second coil side in supply transformer, the first cable core, the second cable core（1#、2#）With the 3rd cable core, the 4th
Cable core（3#、4#）The primary side of supply transformer is parallel to respectively；First Alternating Current Power Supply panel I outputs 50HZ's is adjustable
Formula alternating current, by supply transformer coupled to the first cable core of seven core cable, the second cable core, the 3rd cable core, the 4th
Cable core（1#、2#、3#、4#）, the first cable core, the second cable core（1#、2#）With the 3rd cable core, the 4th cable core（3#、
4#）Transmit adjustable alternating current to AC/DC converting units and carry out AC/DC conversion, 60-180V direct current is provided for downhole instrument
Power supply.
Sleeve pipe underground survey cable multiplexer is crossed described in the present embodiment, ground system is provided with current source panel, ground
Plane system connects current source panel by single electric current line；Downhole instrument is provided with electric current change-over panel, and downhole instrument passes through single
Electric current line connects electric current change-over panel.
Sleeve pipe underground survey cable multiplexer is crossed described in the present embodiment, supply transformer is provided with two primary coils
It is symmetrical with a secondary coil, the parameter of two primary coils；Supply transformer, which includes iron core, line bag and lead, lead, to be included
Six roots of sensation primary coil lead and two secondary coil leads.
Sleeve pipe underground survey cable multiplexer is crossed described in the present embodiment, ground system uses the second Alternating Current Power Supply panel
II provides adjustable alternating current, using the cable skin of seven core cable as loop, transmits adjustable alternating current to downhole electrical motor and hydraulic pressure
Valve power switching circuit board, working power is provided for motor or magnetic valve；The adjustable friendship of second Alternating Current Power Supply panel II outputs
It is 50HZ to flow electric frequency；Ground communications control system connects the second Alternating Current Power Supply panel II by single electric current line；Downhole communication
Control system connects motor and hydraulic valve power switching circuit board by single electric current line；The ground of ground communications control system leads to
Interrogate transmitter module and ground communications receiving module by the 5th cable core of Telecommunication Transformers coupling communication signal to seven core cable,
6th cable core（5#、6#）On, the 5th cable core, the 6th cable core of seven core cable（5#、6#）Differential transfer signal of communication is extremely
The downhole communication transmitter module and downhole communication receiving module of downhole communication control system.
The method of work for crossing sleeve pipe underground survey cable multiplexer described in the present embodiment comprises the following steps：
Step 1, in the work of ground system and downhole instrument, ground system provides 50HZ using the first Alternating Current Power Supply panel
Adjustable alternating current, 50HZ adjustable alternating current is coupled to the first cable core of seven core cable, by supply transformer
Two cables core, the 3rd cable core, the 4th cable core（1#、2#、3#、4#）On, by the first cable core, the second cable core（1#、2#）
With the 3rd cable core, the 4th cable core（3#、4#）Transmission 50HZ adjustable alternating current will pass through to downhole instrument, downhole instrument
Supply transformer is from the first cable core of seven core cable, the second cable core, the 3rd cable core, the 4th cable core（1#、2#、3#、
4#）The adjustable alternating currents of 50HZ of upper acquisition obtain direct current through AC/DC converting units in a manner of rectifier bridge and filtration module,
The direct current can supply district be 60-180V；
Step 2, ground system input that high current that single electric current line obtains is connected to seven core cable by supply transformer
One cable core, the second cable core, the 3rd cable core, the 4th cable core（1#、2#、3#、4#）On, downhole instrument uses identical side
Formula exports single electric current line and is connected to electric current reversing plate, using the earth as loop；
Step 3, the 5th cable core, the 6th cable core that ground communications control system passes through seven core cable（5#、6#）Differential transfer
Signal of communication, communications, and power supply power supply and the mutual not shadow of communication signal transmissions can be carried out simultaneously at the transmitting high current moment
Ring；
Step 4, the motor and hydraulic valve power switching circuit board of downhole instrument couple the of seven core cable by Telecommunication Transformers
Five cables core, the 6th cable core（5#、6#）Parallel connection transmission alternating current, using cable skin as transmission loop；
Step 5, the 7th cable core that well head passes through seven core cable（7#）Connect the voltage acquisition plate of underground, the of seven core cable
Seven cables core transmit the reference signal of U electrodes.
Sleeve pipe underground survey cable multiplexer and its method of work progress TCR are crossed using the present embodiment
Logging operation, using the 5 of seven core cable, 6# cables core communicate and the power supply of transmission electrical machine, using the 1 of seven core cable, 2,
3rd, 4# cables core transmission high current simultaneously provides working power for each circuit board in underground simultaneously, utilizes the 7# cables core of seven core cable
As U reference voltages, due to cable core Limited Number, when being transmitted using seven core cable, power supply and information transfer need to share cable
Core, and because power supply is different with the frequency of data-signal, then power supply and signal can be multiplexed cable core, ingenious using equilibrium principle
The each loop of connection, it is possible to not only transmission signal but also given downhole instrument power supply on seven core cable, that is, supplied using mirage
Electricity reaches the mode of balanced feeding；It can realize：Adopting for downhole instrument passes, and shortens the acquisition time of downhole instrument, together
When to avoid usage time of the downhole instrument in underground long, then extend the service life of instrument；The use of downhole instrument
Temperature is not limited by filter capacitor, so that the field of employment of downhole instrument is wider；High current pair when reducing data acquisition
The interference of signal transmission, gathered data are more accurate.
Embodiment 2
Sleeve pipe underground survey cable multiplexer and its method of work, supply transformer excessively as described in embodiment 1 and accompanying drawing 1 are adopted
With c-type iron core supply transformer, c-type iron core supply transformer is provided with two primary coils and a secondary coil, at the beginning of two
The parameter of level coil is symmetrical；C-type iron core supply transformer includes iron core, line bag and lead, and lead draws including six roots of sensation primary coil
Line and two secondary coil leads, the first Alternating Current Power Supply panel I are arranged on the second coil side of c-type iron core supply transformer, the
One cable core, the second cable core（1#、2#）With the 3rd cable core, the 4th cable core（3#、4#）The power supply of c-type iron core is parallel to respectively
The primary side of transformer.Ground system provides 50HZ adjustable alternating current using the first Alternating Current Power Supply panel I, passes through C
Shaped iron core supply transformer is coupled to the first cable core, the second cable core, the 3rd cable core, the 4th cable core of seven core cable
（1#、2#、3#、4#）On, by the first cable core, the second cable core（1#、2#）With the 3rd cable core, the 4th cable core（3#、4#）
Adjustable alternating current to downhole instrument, the downhole instrument for transmitting 50HZ obtains adjustable exchange by c-type iron core supply transformer
Electricity, direct current is obtained by the rectifier bridge and filtration module of AC/DC converting units, 60-180V direct current is provided for downhole instrument
Power supply.
As shown in Figures 2 to 4, c-type iron core supply transformer is made up of iron core 1, line bag 2 and lead 3, and lead 3 includes the six roots of sensation
Primary coil lead and two secondary coil leads, the overall dimensions of c-type iron core supply transformer（Size after packing）：a、
52mm, b, 96mm, c, 53mm, d, 32.5mm.
It should be noted that two primary coils and a secondary output winding of c-type iron core supply transformer, it is desirable to two
The parameter of individual primary coil is symmetrical, as shown in Figure 2：
Primary input terminal
A, exchange, amplitude：0 ~ 100V, electric current：0 ~ 0.4 (2 groups of arranged side by side, 0 ~ 0.2A of single)；Frequency：50HZ；
B, low-frequency ac, amplitude：0 ~ 50V, electric current：0 ~ 8A (4 cores are arranged side by side, 0 ~ 2A of single)；Frequency：0.1HZ；
Secondary output end
Exchange, amplitude：0 ~ 100V, electric current：0~0.4A；Frequency：50HZ；
The no-load voltage ratio of primary coil and secondary coil is fixed tentatively as 1:1.
Described above is only that the preferred embodiment of the present invention is described, and is not that the scope of the present invention is limited
It is fixed；It the foregoing is only the embodiment of the present invention, the protection domain being not intended to limit the present invention；Do not departing from
On the premise of design spirit of the present invention, what this area ordinary skill technical staff made to technical scheme any repaiies
Change, equivalent substitution, improvement etc., all should fall into the protection domain of claims of the present invention determination.
Claims (10)
1. one kind crosses sleeve pipe underground survey cable multiplexer, using power supply of the seven core cable as ground system and downhole instrument
Cable, and collection for downhole instrument and transmission data provide working power, it is characterised in that：The first of the seven core cable
Cable core, the second cable core, the 3rd cable core, the 4th cable core connect ground system and downhole instrument by supply transformer,
The adjustable alternating current of ground system is converted into direct current and is supplied to downhole instrument；5th cable core of the seven core cable,
6th cable core connects ground communications control system and downhole communication control system by Telecommunication Transformers, carry out ground system with
The communication signal transmissions of downhole instrument, while the alternating-current power supply transmission cable also as motor；The 7th of the seven core cable
Cable core connects well head and underground voltage acquisition plate, carries out the transmission with reference to U electrode signals.
2. as claimed in claim 1 cross sleeve pipe underground survey cable multiplexer, it is characterised in that：The ground system uses
First Alternating Current Power Supply panel provides adjustable alternating current, by supply transformer be coupled to seven core cable the first cable core, the
Two cables core, the 3rd cable core, on the 4th cable core, by the first cable core, the second cable core and the 3rd cable core, the 4th cable
Core carries out the transmission of adjustable alternating current.
3. as claimed in claim 1 cross sleeve pipe underground survey cable multiplexer, it is characterised in that：The downhole instrument passes through
Supply transformer obtains adjustable from the first cable core of seven core cable, the second cable core, the 3rd cable core, the 4th cable core
Alternating current, direct current is obtained by AC/DC converting units.
4. as claimed in claim 2 cross sleeve pipe underground survey cable multiplexer, it is characterised in that：First Alternating Current Power Supply
Panel is arranged on the second coil side of supply transformer.
5. as claimed in claim 2 cross sleeve pipe underground survey cable multiplexer, it is characterised in that：First cable core,
Second cable core and the 3rd cable core, the 4th cable core are parallel to the primary side of supply transformer respectively.
6. as claimed in claim 3 cross sleeve pipe underground survey cable multiplexer, it is characterised in that：The AC/DC conversions are single
Member includes rectifier bridge and filtration module.
7. as claimed in claim 2 or claim 3 cross sleeve pipe underground survey cable multiplexer, it is characterised in that：First exchange
Panel of powering exports 50HZ adjustable alternating current, and the adjustable alternating current of the 50HZ is coupled to seven cores by supply transformer
The first cable core, the second cable core, the 3rd cable core, the 4th cable core of cable, the first cable core, the second cable core and the 3rd
Cable core, the 4th cable core transmit adjustable alternating current to AC/DC converting units and carry out AC/DC conversion, are carried for downhole instrument
For 60-180V dc source.
8. as claimed in claim 1 cross sleeve pipe underground survey cable multiplexer, it is characterised in that：The ground system is set
There is current source panel, the ground system connects current source panel by single electric current line.
9. as claimed in claim 1 cross sleeve pipe underground survey cable multiplexer, it is characterised in that：The downhole instrument is set
There is electric current change-over panel, the downhole instrument connects electric current change-over panel by single electric current line.
A kind of 10. method of work for crossing sleeve pipe underground survey cable multiplexer, using such as any one of claim 1 to 9 institute
That states crosses sleeve pipe underground survey cable multiplexer, it is characterised in that：This method comprises the following steps：
Step 1, in the work of ground system and downhole instrument, ground system provides 50HZ using the first Alternating Current Power Supply panel
Adjustable alternating current, 50HZ adjustable alternating current is coupled to the first cable core of seven core cable, by supply transformer
Two cables core, the 3rd cable core, on the 4th cable core, by the first cable core, the second cable core and the 3rd cable core, the 4th cable
Core transmission 50HZ adjustable alternating current arrives downhole instrument, and downhole instrument will be electric from the first of seven core cable by supply transformer
Cable core, the second cable core, the 3rd cable core, the adjustable alternating currents of 50HZ that obtain on the 4th cable core are through AC/DC converting units
Obtain direct current in a manner of rectifier bridge and filtration module, the direct current can supply district be 60-180V；
Step 2, ground system input that high current that single electric current line obtains is connected to seven core cable by supply transformer
One cable core, the second cable core, the 3rd cable core, on the 4th cable core, downhole instrument is adopted exports single electricity in a like fashion
Streamline is connected to electric current reversing plate, using the earth as loop；
Step 3, fiveth cable core, sixth cable core differential transfer communication letter of the ground communications control system by seven core cable
Number, communications can be carried out simultaneously at the transmitting high current moment, and power supply power supply is independent of each other with communication signal transmissions；
Step 4, the motor and hydraulic valve power switching circuit board of downhole instrument couple the of seven core cable by Telecommunication Transformers
Five cables core, the 6th cable core transmission alternating current in parallel, using cable skin as transmission loop；
Step 5, well head connect the voltage acquisition plate of underground, the 7th electricity of seven core cable by the 7th cable core of seven core cable
Cable core transmits the reference signal of U electrodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710534628.3A CN107524436B (en) | 2017-07-03 | 2017-07-03 | Multiplexing device for underground measurement cable through casing and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710534628.3A CN107524436B (en) | 2017-07-03 | 2017-07-03 | Multiplexing device for underground measurement cable through casing and working method thereof |
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| CN107524436A true CN107524436A (en) | 2017-12-29 |
| CN107524436B CN107524436B (en) | 2023-09-08 |
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| CN201710534628.3A Active CN107524436B (en) | 2017-07-03 | 2017-07-03 | Multiplexing device for underground measurement cable through casing and working method thereof |
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| CN109888772A (en) * | 2019-02-19 | 2019-06-14 | 中国海洋石油集团有限公司 | A kind of logger power supply system |
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| CN107524436B (en) | 2023-09-08 |
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