CN102839972B - Bus system of logging downhole instrument based on twisted-pair Ethernet and logging method - Google Patents
Bus system of logging downhole instrument based on twisted-pair Ethernet and logging method Download PDFInfo
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- CN102839972B CN102839972B CN201110167507.2A CN201110167507A CN102839972B CN 102839972 B CN102839972 B CN 102839972B CN 201110167507 A CN201110167507 A CN 201110167507A CN 102839972 B CN102839972 B CN 102839972B
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Abstract
The invention relates to a bus system of a logging downhole instrument based on a twisted-pair Ethernet, as well as a logging method, and discloses a bus system of a logging downhole instrument based on a twisted-pair Ethernet. The bus system comprises a downhole instrument which comprises a communication board; a downhole remote transmitter which comprises a communication board that is used as a gateway and a route module; a twisted-pair Ethernet is used as a downhole bus for connecting the downhole instrument and the downhole remote transmitter by communicating means, thereby forming a local area network; the bus system of a logging downhole tool based on the twisted-pair Ethernet is characterized in that the communication board is abutted with the downhole bus and the communication board further comprises an embedded processor, a digital signal processor, an Ethernet controlling chip, an Ethernet exchanging chip and an isolation transformer. Furthermore, the invention relates to a logging method adopting the bus system of the logging downhole instrument.
Description
Technical field
The present invention relates to the downhole logging instrument bus system and logging method in a kind of petroleum logging system, more specifically
Be related to the downhole logging instrument bus system based on twisted-pair Ethernet and logging method, for ground system being completed with each down-hole
Between instrument and downhole instrument communication function each other.
Background technology
Well logging, is also geophysical log or oil well logging, is using the electrochemical properties of rock stratum, conductive characteristic, acoustics
The geophysical properties such as characteristic, radioactivity, the method for measuring geophysical parameterses, belong to applied geophysics method（Including weight,
Magnetic, electricity, shake, well logging）One of.It is general to be divided into electrical log, cement bond logging by the petrophysical property for being detected or detection purpose
Well, radioactive logging, dipmeter log, mud logging, formation testing well logging, brill mud logging etc..Using electricity, magnetic, sound, heat,
The various loggers of the physical principles such as core manufacture, by logging cable G.I.H, make ground electrical measuring instrument continuous along pit shaft
Record the various parameters with change in depth.By representing the curve of this kind of parameter, the rock stratum of underground is recognized, such as oil, gas and water
Layer, coal seam, metalliferous deposit etc..
In order to improve the Measurement Resolution on stratum and adapt to bad ground well logging, current logger has increasing
Species, and realize becoming increasingly complex.Need for multiple downhole instruments to be combined into a string lower well measurements, each down-hole during well logging
Instrument is required for and software on ground communication, comprising uploading data and biography control command, configuration parameter etc. down.This is in measurement process
Also generate substantial amounts of initial data.At present, the downhole toolbus for using in a large number in logging system have：DTB buses, lead to
News speed is about 100Kbps；1553B buses, communication speed are about 400Kbps；RS485 buses, communication speed are about
500Kbps；CAN, communication speed are about 800Kbps.These equipment flows are little, and the data for limiting many downhole instruments are passed
It is defeated, cause and have to abandon substantial amounts of initial data, so as to the postmortem analysiies of log data are caused with very big obstacle.This
Outward, downhole toolbus and cable communication system are coordinated, and the communication speed of general bus is greater than cable data biography
Defeated system, so could fully play the performance of data over cable system.Cable in Leap800 a new generations logging system
Transmission system transfer rate must could expire in more than 2000Kbps in more than 1000Kbps, the Bus Speed of such downhole instrument
The transmission demand of the logger big data quantity of foot a new generation.
The content of the invention
In order to ensure that all of downhole instrument quick, reliable with ground system can be communicated, it is necessary to set up complete set
, downhole toolbus system that is reliable, disclosure satisfy that instrument data transmission requirement.
Twisted-pair Ethernet bussing technique is one of common technology in LAN, and it has 10M/100Mbps even more
High communication speed, ripe communications protocol and corollary equipment, chip etc..In view of above characteristic, can be to twisted-pair Ethernet
Bus is designed and debugs to apply into downhole toolbus system.
So as in order to substantial amounts of data transfer to ground, ethernet technology be answered using the system and method for the present invention
For the communication of downhole logging instrument, so as to improve the communication speed of downhole toolbus.
In one embodiment, the present invention relates to a kind of downhole logging instrument bus system based on twisted-pair Ethernet,
Including：
Downhole instrument, including communication board；
Downhole telemetry tool, including the communication board as gateway and routing module；
Twisted-pair Ethernet is adopted between wherein described downhole instrument and the downhole telemetry tool as down-hole bus to lead to
The connection of news ground, so that constitute LAN；
It is characterized in that the communication board is docked with down-hole bus and the communication board is further included：
- flush bonding processor, by communicating the data for obtaining downhole instrument with synchronous serial interface；
- digital signal processor, is connected to the flush bonding processor so as to the data acquired in flush bonding processor
Calculated and processed；
- ethernet control chip, is connected to the flush bonding processor, calculates through digital signal processor so as to receive
The data after form are adjusted with process and by flush bonding processor, ether netting index is converted this data to according to communications protocol subsequently
According to bag；
Ethernet data bag signal is converted to twisted pair signal and is sent to the bus of down-hole by-Ethernet switching chip；
- isolating transformer, is connected between ethernet control chip and Ethernet switching chip, for different Ethernets
Between signal coupling and level isolate.
The invention further relates to a kind of method logged well using downhole logging instrument bus system mentioned above, which is special
Levy is to include the step of obtaining the data of downhole instrument and be forwarded to down-hole bus.
The invention has the beneficial effects as follows improving Bus Speed and reliability, twisted-pair Ethernet communication speed is higher, and
Can be connected with external network so as to convenient using ripe TCP and udp protocol, network is provided for the long-range upgrading instrument that updates
Basis.In addition, adopting T-shaped topological structure, in bus, arbitrary instrument failure does not interfere with the communication of Other Instruments, and bus
Failure will not propagate to Other Instruments along bus, damage Other Instruments and circuit board so as to avoid therefore.Additionally, unified
Communication board causes instrument convenient for production quick, is easy to safeguard.
Description of the drawings
When understanding together with appended accompanying drawing, from the detailed description of the present invention, before the present invention and other mesh
, feature, aspect and advantage will become clear from, wherein：
Fig. 1 is the exemplary downhole logging instrument bus system based on twisted-pair Ethernet according to embodiments of the present invention
100 block diagram；
Fig. 2 is the block diagram of the communication board for downhole logging instrument bus system illustrated in fig. 1 100.
In figure, identical label typicallys represent the similar feature of identical, functionally similar and/or structure.
Specific embodiment
Described for preferred embodiment of the present invention below with reference to the accompanying drawings.
First, with reference to Fig. 1, the exemplary well logging well based on twisted-pair Ethernet according to embodiments of the present invention will be described
Lower instrument bus system 100.The downhole logging instrument bus system 100 includes:Downhole instrument 11,12…1n；Downhole telemetry tool 2；
And by downhole instrument 11,12…1nIt is being communicatively connected with downhole telemetry tool 2, as the twisted-pair Ethernet 3 of down-hole bus.
Downhole instrument 11,12…1nMay include communication board 41,42…4n, for carrying out data transmission with down-hole bus.In preferred embodiment
In, the communication board 41,42…4nCan be unified.The downhole telemetry tool 2 can be included as the logical of gateway and routing module
News plate 5, for downhole instrument 11,12…1nAnd the well logging computer of ground system carries out data transmission.
In an embodiment of the present invention, downhole instrument includes polytype, including but not limited to magnetic orientator, natural gamma
Instrument, fluid density instrument, Instrument for Pressure, thermometer, water holdup tool, effusion meter, caliper.As shown in figure 1, one or more downhole instruments
Device constitutes a LAN with downhole telemetry tool 2, it is preferable that the LAN adopts T-shaped topological structure, additionally, the LAN
Using can using known TCP and udp protocol etc. as communications protocol.As illustrated in FIG. 1, the gateway of downhole telemetry tool 2 and
Routing module（It is not shown）As the gateway and router of the LAN, and downhole instrument T-shaped node then as the LAN.
Preferably, each described downhole instrument has the static ip address and MAC Address and identical downhole instrument IP for having predefined
Address is consistent, and each communication board is respectively provided with different unique MAC Address.In a preferred embodiment of the invention, it is described
Memorizer of the communication board also including the firmware that is stored with, the firmware can carry out remote online renewal by network.
Fig. 2 is the block diagram of the communication board for downhole logging instrument bus system illustrated in fig. 1 100.As shown in Fig. 2
With the communication board 4 of Fig. 11As a example by, communication board 41Including：Flush bonding processor 42, which is by logical with the synchronous serial interface 41 of downhole instrument
The data of news and acquisition downhole instrument；Digital signal processor (DSP) 43, is connected to the flush bonding processor 42 so as to embedding
Enter the data acquired in formula processor 42 to be calculated and processed；Ethernet control chip 45, is connected to the embedded processing
Device 42, calculates through digital signal processor 43 so as to receive and processes and adjusted the number after form by flush bonding processor 42
According to subsequently converting this data to Ethernet data bag according to communications protocol；Ethernet switching chip 47, by Ethernet data bag
Signal is converted to twisted pair signal and sends to the bus of down-hole；Isolating transformer 46, is connected to ethernet control chip and ether
Between net exchange chip, for being isolated into the Ethernet data bag signal and twisted pair signal of Ethernet differential signal.Isolation becomes
The Main Function of depressor 46 is that signal level is coupled and signal isolation, in particular for：First, enhancing signal makes signal
Transmission range is farther；Second, it is isolated from the outside ethernet control chip 45, greatly strengthen the anti-interference energy of the chip 45
Power, and protection is enhanced to the chip 45；3rd, when communication board is connected to the network of varying level, will not be to equipment each other
Impact.
Communication board 41Major function be to obtain instrument data to be forwarded to industry ethernet.As shown in Fig. 2 communication board 41
Core be flush bonding processor 42 and digital signal processor 43.In an embodiment of the present invention, it is a kind of using well logging down-hole
The method logged well by instrument bus system may comprise steps of：By flush bonding processor 42 by leading to synchronous serial interface 41
Interrogate and obtain instrument data, acquired data can be stored in memorizer 44, the memorizer is, for example, that random access memory is deposited
Reservoir（RAM）Or flash memory（FLASH）；Acquired in the subsequent digital signal processor 43 pairs by being connected to flush bonding processor 42
Data calculated and processed；Resulting result is sent to ether network control through the adjustment of flush bonding processor 42 data form
Coremaking piece 47；Again by ethernet control chip 47 according to agreement（Such as TCP/UDP etc.）Convert data to Ethernet difference letter
Number packet, the packet isolated by isolating transformer 46, then by Ethernet switching chip 47 by Ethernet data
Bag signal is converted to twisted pair signal and sends to down-hole bus 3.Twisted-pair Ethernet typically receives and dispatches separate differential signal, with
The effect of too net exchange chip 47 is exactly by bus upward signal, bus downstream signal and the upward signal of itself, downstream signal
Respectively process after communicated with bus again, otherwise the upward signal of itself, downstream signal by with bus on signal conflict.
The advantage of whole implementation is as follows：
1st, using TCP/IP standard agreements, can dock with any network equipment, and facilitate management software to develop, so as to
By means of ICP/IP protocol remote operation, general line controlling system, and can remotely maintained equipment, instrument, and to equipment,
Firmware of instrument etc. is updated.
2nd, downhole instrument networking is very simple and convenient, as long as configured IP address can just communicate.
3rd, the network bandwidth is high, is adapted to follow-up Expansion development.Down-hole bus bandwidth has the logical of 10M/100Mbps even more highs
News speed.
It will be appreciated that for clarity described in the context of separate embodiments, some features of invention can also be by
There is provided in single embodiment in combination.Conversely, for brevity described in the context of single embodiment, invention certain
A little features can also be by individually or with any suitable sub-portfolio offer.
Although invention is described with reference to its specific embodiment, but it is clear that many alterations, modifications and variations are to ability
The technical staff in domain will be apparent.Accordingly, it is intended to cover all such fall into the spiritual and wide of claims
Alterations, modifications and variations in general scope.In addition, the reference of any reference in this application or mark are not necessarily to be construed as holding
Recognize such with reference to the prior art that can be used as the present invention.
Claims (11)
1. a kind of downhole logging instrument bus system based on twisted-pair Ethernet（100）, including：
Downhole instrument（11,12…1n）, including the first communication board（41,42…4n）；
Downhole telemetry tool（2）, including the second communication board as gateway and routing module（5）；
Wherein described downhole instrument（11,12…1n）With the downhole telemetry tool（2）Between using twisted-pair Ethernet it is total as down-hole
Line（3）Communicatively to connect, so as to constitute LAN；
It is characterized in that first communication board（41,42…4n）With down-hole bus（3）Docking and first communication board（41,
42…4n）Further include：
- flush bonding processor（42）, by with synchronous serial interface（41）Communication obtains the data of downhole instrument；
- digital signal processor（43）, it is connected to the flush bonding processor（42）So as to flush bonding processor（42）Obtained
The data for taking are calculated and are processed；
- ethernet control chip（45）, it is connected to the flush bonding processor（42）, so as to receive through digital signal processor
（43）Calculate and process and by flush bonding processor（42）The data are subsequently turned by the data after adjustment form according to communications protocol
It is changed to Ethernet data bag；
- Ethernet switching chip（47）, Ethernet data bag signal is converted to into twisted pair signal and is sent to down-hole bus（3）
On；
- isolating transformer（46）, it is connected to ethernet control chip（45）And Ethernet switching chip（47）Between, for difference
Signal coupling and level between Ethernet is isolated.
2. downhole logging instrument bus system as claimed in claim 1（100）, wherein described down-hole bus（3）Opened up using T-shaped
Flutter structure.
3. downhole logging instrument bus system as claimed in claim 1（100）, wherein described downhole instrument（11,12…1n）Institute
Using the first communication board（41,42…4n）It is identical.
4. downhole logging instrument bus system as claimed in claim 1（100）, wherein described downhole instrument（11,12…1n）In
Each have the static ip address and MAC Address and identical downhole instrument for having predefined（11,12…1n）IP address one
Cause, and the first communication board（41,42…4n）In each be respectively provided with different unique MAC Address.
5. downhole logging instrument bus system as claimed in claim 1（100）, wherein described first communication board（41,42…4n）
Also including the memorizer of the firmware that is stored with（44）, the firmware can pass through network remote online updating.
6. downhole logging instrument bus system as claimed in claim 1（100）, wherein described communications protocol includes TCP, UDP
Agreement.
7. downhole logging instrument bus system as claimed in claim 1（100）, wherein described downhole instrument（11,12…1n）Bag
Include：Magnetic orientator, Natural Gamma Ray Tool, fluid density instrument, Instrument for Pressure, thermometer, water holdup tool, effusion meter, caliper.
8. a kind of usage right requires the downhole logging instrument bus system described in 1（100）The method logged well, its feature exist
In including acquisition downhole instrument（11,12…1n）Data and be forwarded to down-hole bus（3）The step of.
9. method as claimed in claim 8, wherein described acquisition downhole instrument（11,12…1n）Data and be forwarded to down-hole
Bus（3）The step of include following sub-step：
By flush bonding processor（42）By with synchronous serial interface（41）Communication obtains the data of downhole instrument；
By digital signal processor（43）To flush bonding processor（42）Acquired data are calculated and are processed；
By ethernet control chip（45）Receive and calculate and process and by flush bonding processor through digital signal processor（42）
Data after adjustment form, subsequently convert this data to Ethernet data bag according to communications protocol；
By isolating transformer（46）Ethernet data bag signal is isolated with twisted pair signal；And
By Ethernet switching chip（47）Ethernet data bag signal is converted to twisted pair signal to send to the bus of down-hole.
10. method as claimed in claim 8, wherein methods described also include what network remote online updating memorizer was stored
Firmware.
11. methods as claimed in claim 8, wherein described communications protocol include TCP, udp protocol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110167507.2A CN102839972B (en) | 2011-06-21 | 2011-06-21 | Bus system of logging downhole instrument based on twisted-pair Ethernet and logging method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110167507.2A CN102839972B (en) | 2011-06-21 | 2011-06-21 | Bus system of logging downhole instrument based on twisted-pair Ethernet and logging method |
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| Publication Number | Publication Date |
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| CN102839972A CN102839972A (en) | 2012-12-26 |
| CN102839972B true CN102839972B (en) | 2017-03-22 |
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| CN201110167507.2A Expired - Fee Related CN102839972B (en) | 2011-06-21 | 2011-06-21 | Bus system of logging downhole instrument based on twisted-pair Ethernet and logging method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104299394B (en) * | 2013-07-19 | 2017-05-24 | 电子科技大学 | network logging simulation method |
| CN103618656A (en) * | 2013-11-27 | 2014-03-05 | 中国石油天然气集团公司 | Master-slave nodes of networked logging downhole instrument and data processing method thereof |
| CN104763413B (en) * | 2015-03-10 | 2017-09-22 | 中国海洋石油总公司 | It is a kind of for the data/address bus of downhole logging instruments, system and data transmission method |
| US10619474B2 (en) * | 2017-11-14 | 2020-04-14 | Saudi Arabian Oil Company | Remotely operated inflow control valve |
| CN108756862A (en) * | 2018-05-28 | 2018-11-06 | 中国科学院地质与地球物理研究所 | With brill Double wire transmission bus system |
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| CN202364252U (en) * | 2011-06-21 | 2012-08-01 | 中国石油集团长城钻探工程有限公司 | Bus system of subsurface device |
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| FR2379694A1 (en) * | 1977-02-03 | 1978-09-01 | Schlumberger Prospection | BOREHOLE DATA TRANSMISSION SYSTEM |
| CA1202712A (en) * | 1982-11-12 | 1986-04-01 | Jack J. Flagg | Universal interface method and apparatus for subsurface earth formation testing |
| US8607863B2 (en) * | 2009-10-07 | 2013-12-17 | Halliburton Energy Services, Inc. | System and method for downhole communication |
| CN201732283U (en) * | 2010-06-10 | 2011-02-02 | 北京环鼎科技有限责任公司 | Network-transmission imaging logging ground system |
| CN201830279U (en) * | 2010-10-11 | 2011-05-11 | 天津市泰华科技有限公司 | Device for realizing hot standby of log data in petroleum logging system |
| CN102094635A (en) * | 2010-12-06 | 2011-06-15 | 北京环鼎科技有限责任公司 | Logging data transmission system and transmission method thereof |
| CN201878146U (en) * | 2010-12-15 | 2011-06-22 | 江西省煤炭工业科学研究所 | Double frequency wireless communication system for mine |
| CN202215238U (en) * | 2011-06-10 | 2012-05-09 | 中国海洋石油总公司 | Multi-priority network logging data transmission system |
| CN102839971B (en) * | 2011-06-21 | 2016-08-10 | 中国石油集团长城钻探工程有限公司 | Downhole logging instrument bus system based on coaxial cable Ethernet and logging method |
| CN202250053U (en) * | 2011-10-09 | 2012-05-30 | 西安格威石油仪器有限公司 | Logging device with both storing and remote measuring functions |
| CN203978425U (en) * | 2014-05-21 | 2014-12-03 | 青岛杰瑞自动化有限公司 | A kind of wireline logging HRT high-rate telemetry communication apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202364252U (en) * | 2011-06-21 | 2012-08-01 | 中国石油集团长城钻探工程有限公司 | Bus system of subsurface device |
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