CN109888772A - A kind of logger power supply system - Google Patents
A kind of logger power supply system Download PDFInfo
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- CN109888772A CN109888772A CN201910124674.5A CN201910124674A CN109888772A CN 109888772 A CN109888772 A CN 109888772A CN 201910124674 A CN201910124674 A CN 201910124674A CN 109888772 A CN109888772 A CN 109888772A
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- power supply
- cable
- transformer
- cable core
- direct current
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Abstract
The embodiment of the invention discloses a kind of logger power supply systems, it include: the surface power supply being sequentially connected and corollary equipment part, halter, cable and downhole instrument power pack, the surface power supply and corollary equipment part include: AC power source and DC power supply；Wherein, the output end of the AC power source includes: the first transformer, and the secondary windings of first transformer has the first centre cap；Output end of the both ends of the secondary windings of first transformer as the AC power source is connected by the halter with the first cable core of the cable and the second cable core respectively；The cathode output end of the DC power supply is connected with first centre cap, and the cathode output end of the DC power supply is connected with the crust of the cable.It by the example scheme, realizes on the basis of current cable core quantity, while meeting underground exchange and the supply of high voltage direct current and improving logging efficiency convenient for providing power supply for various loggers.
Description
Technical field
The present embodiments relate to underground power supply used technology, espespecially a kind of logger power supply system.
Background technique
In logger, due to the limitation of the cable core quantity of 7 core cables of well logging, for downhole instrument, in addition to logical
News are outer can only to meet Alternating Current Power Supply, usually 180VAC, and earth layer measuring instrument is needed in underground using high pressure 500VDC direct current
The high pressure of brushless motor, the 500VDC can not be obtained from the exchange 180VAC that underground provides, and need in addition to introduce to downhole instrument
The high pressure of 500VDC, and the cable core quantity of cable only has 7, other than Alternating Current Power Supply and communication cable core, without enough cables
Core is used to provide direct current supply, without using this kind of high voltage direct current power supply, the function of downhole instrument dynamical system be cannot achieve, shadow
Ring the success rate of logging operation and the timeliness of operation.
Summary of the invention
The embodiment of the invention provides a kind of logger power supply systems, can be on the basis of current cable core quantity, together
When meet underground exchange and the supply of high voltage direct current improves logging efficiency convenient for providing power supply for various loggers.
It, can be with the embodiment of the invention provides a kind of logger power supply system in order to reach purpose of the embodiment of the present invention
Including the surface power supply being sequentially connected and corollary equipment part, halter, cable and downhole instrument power pack, the ground is supplied
Electricity and corollary equipment part may include: AC power source and DC power supply；
Wherein, the output end of the AC power source may include: the first transformer, the secondary windings of first transformer
With the first centre cap；Output end of the both ends of the secondary windings of first transformer as the AC power source, respectively
It is connected by the halter with the first cable core of the cable and the second cable core；
The cathode output end of the DC power supply is connected with first centre cap, the cathode output of the DC power supply
End is connected with the crust of the cable.
In an exemplary embodiment of the present invention, the downhole instrument power pack may include: for exchanging for underground
The Alternating Current Power Supply part of electricity consumption instrument power supply；The Alternating Current Power Supply part includes: at least one second transformer；
The both ends of the armature winding of second transformer are connected with first cable core and second cable core；
Ac input end of the secondary windings of second transformer as underground exchange electricity consumption instrument.
In an exemplary embodiment of the present invention, the armature winding of second transformer has the second centre cap；
The downhole instrument power pack can also include: the direct current supply portion for powering for underground direct current electricity consumption instrument
Point；
The direct current supply part may include: direct-flow positive pole conducting wire and direct current cathode conductor；
The first end of the direct-flow positive pole conducting wire is connected with second centre cap, and the second of the direct-flow positive pole conducting wire
End is connected with the electrode input end of the underground direct current electricity consumption instrument；
The first end of the direct current cathode conductor is connected with the crust of the cable, the second end of the direct current cathode conductor
It is connected with the negative input of the underground direct current electricity consumption instrument.
In an exemplary embodiment of the present invention, the secondary windings of each second transformer is one or more；
When the secondary windings of second transformer is multiple, the different secondary windings outputs of second transformer
Different alternating currents；Different secondary windings is connected from different rectifier equipments respectively, and different rectifier equipments exports different
DC voltage.
In an exemplary embodiment of the present invention, the DC voltage may include one or more of :+5V, ±
12V ,+18V and ± 24V.
In an exemplary embodiment of the present invention, the surface power supply and corollary equipment part can also include distribution of cable core
Panel, the distribution of cable core panel are set between the halter and the AC power source and the DC power supply, for pair
The cable core of the cable carries out function distribution.
In an exemplary embodiment of the present invention, the cable is 7 core cables；The third cable core of the 7 core cable, the 4th
For communicating, the 7th cable core of the 7 core cable is vacant cable core for cable core, the 5th cable core and the 6th cable core.
In an exemplary embodiment of the present invention, the 7 core cable is a plurality of, and core meets in the 7 core cable
AWG20。
In an exemplary embodiment of the present invention, it is defeated can be respectively provided with multi gear for the AC power source and the DC power supply
Voltage and or current out.
In an exemplary embodiment of the present invention, the AC power source can be exchange AC1500W AC power source, described straight
Galvanic electricity source can be direct current DC1500W DC power supply.
The embodiment of the present invention includes: the surface power supply and corollary equipment part, halter, cable and downhole instrument being sequentially connected
Device power pack, the surface power supply and corollary equipment part include: AC power source and DC power supply；Wherein, the alternating current
The output end in source includes: the first transformer, and the secondary windings of first transformer has the first centre cap；Described first becomes
Output end of the both ends of the secondary windings of depressor as the AC power source passes through the of the halter and the cable respectively
One cable core and the second cable core are connected；The cathode output end of the DC power supply is connected with first centre cap, the direct current
The cathode output end of power supply is connected with the crust of the cable.By the example scheme, realize in current cable core quantity
On the basis of, while meeting underground exchange and the supply of high voltage direct current and improving well logging convenient for providing power supply for various loggers
Efficiency.
The other feature and advantage of the embodiment of the present invention will illustrate in the following description, also, partly from explanation
It is become apparent in book, or understand through the implementation of the invention.The objectives and other advantages of the invention can be by illustrating
Specifically noted structure is achieved and obtained in book, claims and attached drawing.
Detailed description of the invention
Attached drawing is used to provide to further understand technical solution of the present invention, and constitutes part of specification, with this
The embodiment of application technical solution for explaining the present invention together, does not constitute the limitation to technical solution of the present invention.
Fig. 1 is the logger power supply system structural schematic diagram of the embodiment of the present invention；
Fig. 2 provides the logger power supply of AC1500W AC power source and DC1500W DC power supply for the embodiment of the present invention
System structure diagram.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention
Embodiment be described in detail.It should be noted that in the absence of conflict, in the embodiment and embodiment in the application
Feature can mutual any combination.
The embodiment of the invention provides a kind of logger power supply systems, as shown in Figure 1, may include the ground being sequentially connected
Face power supply and corollary equipment part 1, halter 2, cable 3 and downhole instrument power pack 4, the surface power supply and corollary equipment
Part 1 may include: AC power source 11 and DC power supply 12；
Wherein, the output end of the AC power source 11 may include: the first transformer 111, first transformer 111
Secondary windings has the first centre cap 1111；Both ends (AC1 and AC2) conduct of the secondary windings of first transformer 1111
The output end of the AC power source 11 passes through the first cable core 31 and the second cable core 32 of the halter 2 and the cable 3 respectively
It is connected；
The cathode output end TC+ of the DC power supply 12 is connected with first centre cap 1111, the DC power supply
Cathode output end TC- be connected with the crust of the cable.
In an exemplary embodiment of the present invention, the AC power source can be exchange AC1500W AC power source, described straight
Galvanic electricity source can be direct current DC1500W DC power supply.
In an exemplary embodiment of the present invention, it is defeated can be respectively provided with multi gear for the AC power source and the DC power supply
Voltage and or current out.
In an exemplary embodiment of the present invention, AC power source 11 provides underground in surface power supply and corollary equipment part 1
The power supply that instrument needs, can select AC1500W AC power source, which can have two grades of choosings
It selects, can be selected according to downhole instrument, which has centre cap (the first i.e. above-mentioned centre cap
1111).DC power supply 12 can provide the 500VDC power supply of downhole instrument needs, can select DC1500W DC power supply, this is straight
12 output voltage electric current of galvanic electricity source can have two grades of selections, can be selected according to downhole instrument electricity consumption, earth layer measuring instrument
It generally can choose 750VDC/2A.
In an exemplary embodiment of the present invention, the surface power supply and corollary equipment part 1 can also be including cable cores point
With panel 12, the distribution of cable core panel 13 is set to the halter 2 and the AC power source 11 and the DC power supply 12
Between, function distribution is carried out for the cable core to the cable 3.
In an exemplary embodiment of the present invention, in addition to can have power of alterating and direct current supply lines in distribution of cable core panel 13
Outside, there can also be two kinds of communication modes of instrument, complete communication and the function of supplying power of instrument.
In an exemplary embodiment of the present invention, the anode of DC power supply 12 can be with by the centre cap of AC power source 11
On two cable cores (the first cable core 31 and the second cable core 32) that the AC power source that is added to 11 occupies, distribution of cable core may then pass through
The configuration of the completion cable core of panel 13.
In an exemplary embodiment of the present invention, the cable 3 can be 7 core cables (or the long cable of 7 cores)；7 core
Third cable core, the 4th cable core, the 5th cable core and the 6th cable core of cable can be used for communicating, the 7th cable core of the 7 core cable
It can be vacant cable core.
In an exemplary embodiment of the present invention, halter 2 can complete instrument (such as surface power supply and corollary equipment part
And the connection function of the long cable of 7 cores 1).
In an exemplary embodiment of the present invention, the cable core of the long cable of 7 cores may include both of which communication account for 4 cable cores,
Exchange AC accounts for 2 cable cores, and the cathode of direct current is by the crust of 7 core cables for going down.
In an exemplary embodiment of the present invention, the 7 core cable can be a plurality of, and core can in the 7 core cable
To meet AWG20.
In an exemplary embodiment of the present invention, if the core of the long cable of 7 cores is using AWG20, standard is resistant to flow
1.5A, and downhole electrical motor electric current is possible in 2A or more, even more than 3A, so at least using 2 cable core power supplies, 7 cores are hollow
Remaining 1, but is not able to satisfy direct current supply demand, it is therefore possible to use DC power supply enters the centre cap 1111 of AC power source,
It is entered together with the power supply of AC power source in distribution of cable core panel 13, is then supplied to downhole instrument through halter 2, the long cable 3 of 7 cores
In, the DC500V high-voltage electricity of downhole instrument takes out from the centre cap 42 of Alternating Current Power Supply part again, to realize direct current supply.
In an exemplary embodiment of the present invention, the downhole instrument power pack 4 may include: for exchanging for underground
The Alternating Current Power Supply part of electricity consumption instrument power supply；The Alternating Current Power Supply part may include: at least one second transformer 41；
The both ends of the armature winding of second transformer 41 are connected with first cable core 31 and second cable core 32；
Ac input end of the secondary windings of second transformer 41 as underground exchange electricity consumption instrument.
In an exemplary embodiment of the present invention, in downhole instrument power pack 4, the power supply of instrument can be by transformer
(second transformer 41), alternatively, transformer group (the second transformers 41 of multiple parallel connections) and corresponding each road rectified current
The DC low voltage power supplies circuit such as road, filter circuit composition, the armature winding of second transformer can connect the long cable AC power supply of 7 cores
2 cable cores (first cable core 31 and second cable core 32) are one or more after can obtaining transformation from secondary windings
Low-voltage AC is used for different underground exchange electricity consumption instruments.
In an exemplary embodiment of the present invention, the secondary windings of each second transformer is one or more；
When the secondary windings of second transformer is multiple, the different secondary windings of second transformer can be with
Export different alternating currents；Different secondary windings can be connected from different rectifier equipments respectively, and different rectifier equipments can
To export different DC voltages.
In an exemplary embodiment of the present invention, the DC voltage may include one or more of :+5V, ±
12V ,+18V and ± 24V.
In an exemplary embodiment of the present invention, from secondary windings obtain transformation after one or more low-voltage ACs with
Afterwards, each road low-voltage dc power supply that can further obtain instrument needs is used for different underground direct current electricity consumption instruments.
In an exemplary embodiment of the present invention, the armature winding of second transformer 41 has the second centre cap
42；
The downhole instrument power pack 4 can also include: the direct current supply for powering for underground direct current electricity consumption instrument
Part；
The direct current supply part may include: direct-flow positive pole conducting wire 43 and direct current cathode conductor 44；
The first end of the direct-flow positive pole conducting wire 43 is connected with second centre cap 42, the direct-flow positive pole conducting wire 43
Second end be connected with the electrode input end of the underground direct current electricity consumption instrument；
The first end of the direct current cathode conductor 44 is connected with the crust of the cable 3, the direct current cathode conductor 44
Second end is connected with the negative input of the underground direct current electricity consumption instrument.
In an exemplary embodiment of the present invention, the armature winding of the second transformer connects 2 cable cores of the long cable AC power supply of 7 cores
It, can be from the centre cap of the armature winding of the second transformer (i.e. after (first cable core 31 and second cable core 32)
Second centre cap 42) direct current is taken out for the power supply of downhole instrument direct current generator；
In an exemplary embodiment of the present invention, as shown in Fig. 2, in formation testing downhole instrument concrete application,
The DC power supply of DC1500V power supply output can enter the centre cap 1111 of AC1500W, enter together with the power supply of AC power supplies
Into distribution of cable core panel 13, then can be supplied in downhole instrument through halter 2, the long cable 3 of 7 cores, downhole instrument
DC500V high-voltage electricity takes out from the centre cap of AC180V 42 again, is supplied to high-voltage motor driving circuit and is used to drive brush DC
The operating of motor.AC180V can pass through different transformer transformations, export different low-voltage alternating-currents, then filter using rectification
The DC power supplies such as+5VDC, ± 12VDC ,+18VDC, ± 24VDC needed for wave and voltage regulator circuit output downhole instrument, for downhole instrument
Each circuit module of device uses, to constitute the entire power supply system of instrument.
In an exemplary embodiment of the present invention, the special power supply from ground to underground through the embodiment of the present invention
Case can be completed to meet down-hole formation test equipment and various exchange electricity consumption instrument to the power supply of exchange 180VAC and 500VDC
The power demand of device, to meet the power demand of downhole instrument DC brushless motor.And the long cable of 7 cores (cable) can be passed through
To the power supply of downhole instrument, does not need additionally to increase cable core quantity, save cost, improve logging efficiency, and reduce
Interference noise on other cable cores.
The embodiment of the present invention includes: the surface power supply and corollary equipment part, halter, cable and downhole instrument being sequentially connected
Device power pack, the surface power supply and corollary equipment part include: AC power source and DC power supply；Wherein, the alternating current
The output end in source includes: the first transformer, and the secondary windings of first transformer has the first centre cap；Described first becomes
Output end of the both ends of the secondary windings of depressor as the AC power source passes through the of the halter and the cable respectively
One cable core and the second cable core are connected；The cathode output end of the DC power supply is connected with first centre cap, the direct current
The cathode output end of power supply is connected with the crust of the cable.By the example scheme, realize in current cable core quantity
On the basis of, while meeting underground exchange and the supply of high voltage direct current and improving well logging convenient for providing power supply for various loggers
Efficiency.
The embodiment of the present invention is include at least the following beneficial effects:
1, it realizes in the case where the cable core limited amount of the long cable of 7 cores, ensure that using cable core multiplexing technology high-power
Underground electricity consumption.
2, realizing the power supply that earth layer measuring instrument high pressure 500VDC direct current provides hydraulic power to DC brushless motor needs
It asks, realizes the function of adjustable controllable, the instrument backup of instrument hydraulic system, stratum survey pressure sampling, meet the survey of Different Strata
Examination demand.
3, the EDIB (downhole logging instrument of the well log interpretation processing system ECLIPS 5700 of enhanced computerization is realized
Device bus) reservation of two kinds of communication modes in bus, and noise is minimum, can perfectly and with ELIS (offshore oil is logged well
Imaging system) logger mounting well logging.
Although embodiment disclosed by the embodiment of the present invention is as above, the content only for ease of understanding the present invention and
The embodiment of use, is not intended to limit the invention.Technical staff in any fields of the present invention, is not departing from this hair
Under the premise of bright disclosed spirit and scope, any modification and variation can be carried out in the form and details of implementation, but
Scope of patent protection of the invention, still should be subject to the scope of the claims as defined in the appended claims.
Claims (10)
1. a kind of logger power supply system, including the surface power supply being sequentially connected and corollary equipment part, halter, cable and
Downhole instrument power pack, it is characterised in that: the surface power supply and corollary equipment part include: AC power source and direct current
Source；
Wherein, the output end of the AC power source includes: the first transformer, and the secondary windings of first transformer has first
Centre cap；Output end of the both ends of the secondary windings of first transformer as the AC power source, respectively by described
Halter is connected with the first cable core of the cable and the second cable core；
The cathode output end of the DC power supply is connected with first centre cap, the cathode output end of the DC power supply with
The crust of the cable is connected.
2. logger power supply system according to claim 1, which is characterized in that the downhole instrument power supply subpackage
It includes: for exchanging the Alternating Current Power Supply part of electricity consumption instrument power supply for underground；The Alternating Current Power Supply part include: at least one second
Transformer；
The both ends of the armature winding of second transformer are connected with first cable core and second cable core；
Ac input end of the secondary windings of second transformer as underground exchange electricity consumption instrument.
3. logger power supply system according to claim 2, which is characterized in that the armature winding of second transformer
With the second centre cap；
The downhole instrument power pack further include: the direct current supply part for powering for underground direct current electricity consumption instrument；
The direct current supply part includes: direct-flow positive pole conducting wire and direct current cathode conductor；
The first end of the direct-flow positive pole conducting wire is connected with second centre cap, the second end of the direct-flow positive pole conducting wire with
The electrode input end of the underground direct current electricity consumption instrument is connected；
The first end of the direct current cathode conductor is connected with the crust of the cable, the second end of the direct current cathode conductor and institute
The negative input for stating underground direct current electricity consumption instrument is connected.
4. logger power supply system according to claim 2, which is characterized in that the secondary of each second transformer
Winding is one or more；
When the secondary windings of second transformer is multiple, the different secondary windings of second transformer export different
Alternating current；Different secondary windings is connected from different rectifier equipments respectively, and different rectifier equipments exports different direct currents
Voltage.
5. logger power supply system according to claim 4, which is characterized in that the DC voltage includes following one kind
It is or a variety of :+5V, ± 12V ,+18V and ± 24V.
6. logger power supply system according to claim 1, which is characterized in that the surface power supply and corollary equipment portion
Dividing further includes distribution of cable core panel, and the distribution of cable core panel is set to the halter and the AC power source and the direct current
Between power supply, function distribution is carried out for the cable core to the cable.
7. logger power supply system described in -6 any one according to claim 1, which is characterized in that the cable is 7 cores
Cable；Third cable core, the 4th cable core, the 5th cable core and the 6th cable core of the 7 core cable are used to communicate, the 7 core cable
7th cable core is vacant cable core.
8. logger power supply system according to claim 7, which is characterized in that the 7 core cable be it is a plurality of, described 7
Core meets AWG20 in core cable.
9. logger power supply system described in -6 any one according to claim 1, which is characterized in that the AC power source and
The DC power supply is respectively provided with multi gear output voltage and/or electric current.
10. logger power supply system described in -6 any one according to claim 1, which is characterized in that the AC power source
To exchange AC1500W AC power source, the DC power supply is direct current DC1500W DC power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910124674.5A CN109888772A (en) | 2019-02-19 | 2019-02-19 | A kind of logger power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910124674.5A CN109888772A (en) | 2019-02-19 | 2019-02-19 | A kind of logger power supply system |
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| Publication Number | Publication Date |
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| CN109888772A true CN109888772A (en) | 2019-06-14 |
Family
ID=66928473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910124674.5A Pending CN109888772A (en) | 2019-02-19 | 2019-02-19 | A kind of logger power supply system |
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| Country | Link |
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| CN (1) | CN109888772A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112227995A (en) * | 2020-10-13 | 2021-01-15 | 中国海洋石油集团有限公司 | Electric control system for well wall coring |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090001810A1 (en) * | 2007-06-28 | 2009-01-01 | Japan Agency For Marine-Earth Science And Technology | Power Unit of Underwater Vehicle |
| CN101515039A (en) * | 2008-02-19 | 2009-08-26 | 中油测井技术服务有限责任公司 | Underground power supply and signal transmission system |
| CN102035387A (en) * | 2009-09-30 | 2011-04-27 | 西安威尔罗根能源科技有限公司 | Logging instrument underground pushing power supply system with on need of cable cores |
| CN201835827U (en) * | 2010-09-16 | 2011-05-18 | 武汉海王机电工程技术公司 | Multifunctional petroleum logging cable core multiplexing device |
| CN104121015A (en) * | 2013-04-24 | 2014-10-29 | 中国石油化工股份有限公司 | Method for hitching underground logging instrument and logging ground system |
| CN105720803A (en) * | 2016-03-17 | 2016-06-29 | 北京金科龙石油技术开发有限公司 | Underground cable-free AC/DC power transmission method and device for oil and gas field |
| CN107524436A (en) * | 2017-07-03 | 2017-12-29 | 中国石油大学(北京) | One kind crosses sleeve pipe underground survey cable multiplexer and its method of work |
-
2019
- 2019-02-19 CN CN201910124674.5A patent/CN109888772A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090001810A1 (en) * | 2007-06-28 | 2009-01-01 | Japan Agency For Marine-Earth Science And Technology | Power Unit of Underwater Vehicle |
| CN101515039A (en) * | 2008-02-19 | 2009-08-26 | 中油测井技术服务有限责任公司 | Underground power supply and signal transmission system |
| CN102035387A (en) * | 2009-09-30 | 2011-04-27 | 西安威尔罗根能源科技有限公司 | Logging instrument underground pushing power supply system with on need of cable cores |
| CN201835827U (en) * | 2010-09-16 | 2011-05-18 | 武汉海王机电工程技术公司 | Multifunctional petroleum logging cable core multiplexing device |
| CN104121015A (en) * | 2013-04-24 | 2014-10-29 | 中国石油化工股份有限公司 | Method for hitching underground logging instrument and logging ground system |
| CN105720803A (en) * | 2016-03-17 | 2016-06-29 | 北京金科龙石油技术开发有限公司 | Underground cable-free AC/DC power transmission method and device for oil and gas field |
| CN107524436A (en) * | 2017-07-03 | 2017-12-29 | 中国石油大学(北京) | One kind crosses sleeve pipe underground survey cable multiplexer and its method of work |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112227995A (en) * | 2020-10-13 | 2021-01-15 | 中国海洋石油集团有限公司 | Electric control system for well wall coring |
| CN112227995B (en) * | 2020-10-13 | 2022-09-06 | 中国海洋石油集团有限公司 | Electric control system for well wall coring |
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Application publication date: 20190614 |