CN102839972A - 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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- CN102839972A CN102839972A CN2011101675072A CN201110167507A CN102839972A CN 102839972 A CN102839972 A CN 102839972A CN 2011101675072 A CN2011101675072 A CN 2011101675072A CN 201110167507 A CN201110167507 A CN 201110167507A CN 102839972 A CN102839972 A CN 102839972A
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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 well logging downhole toolbus system and logging method in a kind of oil well logging system; Relate more specifically to well logging downhole toolbus system and logging method, be used to accomplish between ground system and each downhole instrument and downhole instrument communication function each other based on twisted-pair Ethernet.
Background technology
Well logging; Also be geophysical log or oil well logging; Be geophysics characteristics such as the electrochemical properties that utilizes the rock stratum, conductive characteristic, acoustic characteristic, radioactivity, measure the method for geophysical parameters, belong to one of applied geophysics method (comprising weight, magnetic, electricity, shake, well logging).Generally can be divided into electrical log, acoustic logging, radioactive logging, dipmeter log, mud logging, formation testing well logging, bore mud logging etc. by petrophysical property of being surveyed or detection purpose.The various loggers that utilize physical principles manufacturings such as electricity, magnetic, sound, heat, nuclear,, make the ground electrical measuring instrument can be along the various parameters of pit shaft recording occurring continuously with change in depth by the logging cable G.I.H.Through representing the curve of this type parameter, discern underground rock stratum, like oil, gas, water layer, coal seam, metalliferous deposit etc.
For the Measurement Resolution and the well logging of adaptation bad ground that improve the stratum, current logger has increasing kind, and realizes becoming increasingly complex.Need a plurality of downhole instruments be combined into a string down well measurements during well logging, each downhole instrument all need with the software on ground communication, comprise and upload data and following transmission control system order, configuration parameter etc.This has also produced a large amount of initial data in measuring process.At present, in the logging system there be a large amount of downhole toolbus of using: the DTB bus, and communication speed is about 100Kbps; The 1553B bus, communication speed is about 400Kbps; The RS485 bus, communication speed is about 500Kbps; The CAN bus, communication speed is about 800Kbps.These equipment flows are little, limited the transfer of data of a lot of downhole instruments, cause and had to abandon a large amount of initial data, thereby the ex-post analysis of log data has been caused very big obstacle.In addition, downhole toolbus and cable communication system cooperate, and the communication speed of general bus is greater than the cable data transmission system, could bring into play the performance of cable data transmission system so fully.Cable communication system transfer rate in Leap800 a new generation logging system is more than 1000Kbps, and the Bus Speed of downhole instrument must could satisfy the transmission demand of the logger big data quantity of a new generation more than 2000Kbps like this.
Summary of the invention
For guarantee all downhole instruments can with ground system fast, communication reliably, must set up a cover complete, reliably, can satisfy the downhole toolbus system of instrument data transmission requirement.
The twisted-pair Ethernet bussing technique is one of technology common in the LAN, and it has 10M/100Mbps even higher communication speed, ripe communications protocol and corollary equipment, chip etc.In view of above characteristic, can design and debug to be applied in the downhole toolbus system the twisted-pair Ethernet bus.
Thereby,, use system and method for the present invention that ethernet technology is applied to the communication of downhole instrument of logging well, thereby improved the communication speed of downhole toolbus in order to arrive ground to great amount of data transmission.
In one embodiment, the present invention relates to a kind of well logging downhole toolbus system, comprising based on twisted-pair Ethernet:
Downhole instrument comprises communication board;
Down-hole the spread of the rumours comprises the communication board as gateway and routing module;
But adopt twisted-pair Ethernet to come communication ground to be connected between wherein said downhole instrument and the spread of the rumours of said down-hole, thereby formation LAN as the down-hole bus;
It is characterized in that said communication board docks with the down-hole bus and said communication board further comprises:
-flush bonding processor is through obtaining the data of downhole instrument with the synchronous serial interface communication;
-digital signal processor calculates and handles the data that flush bonding processor obtained thereby be connected to said flush bonding processor;
-ethernet control chip is connected to said flush bonding processor, thereby reception is calculated and handled through digital signal processor and by the data behind the flush bonding processor adjustment form, according to communications protocol these data is converted to the Ethernet data bag subsequently;
-Ethernet switching chip converts Ethernet data bag signal into the twisted-pair feeder signal and is sent on the bus of down-hole;
-isolating transformer is connected between ethernet control chip and the Ethernet switching chip, and the signal coupling and the level that are used between the different Ethernets are isolated.
The invention still further relates to a kind of method of using well logging downhole toolbus system mentioned above to log well, it is characterized in that comprising the data of obtaining downhole instrument and be forwarded to the step of down-hole bus.
The invention has the beneficial effects as follows to have promoted Bus Speed and reliability, the twisted-pair Ethernet communication speed is higher, thereby and can use ripe TCP and udp protocol conveniently to be connected with external network, for remote update upgrading instrument provides network foundation.In addition, adopt T type topological structure, arbitrary instrument failure all can not influence the communication of Other Instruments on the bus, and bus failure can not be transmitted to Other Instruments along bus, thereby has avoided therefore damaging Other Instruments and circuit board.In addition, unified communication board makes instrument convenient for production quick, is convenient to safeguard.
Description of drawings
When understanding together with appended accompanying drawing, from detailed description of the present invention, will the becoming obviously of front of the present invention with other purposes, characteristic, aspect and advantage, wherein:
Fig. 1 is the block diagram according to the exemplary well logging downhole toolbus system 100 based on twisted-pair Ethernet of the embodiment of the invention;
Fig. 2 is the block diagram that is used for the communication board of well logging downhole toolbus illustrated in fig. 1 system 100.
In the drawings, identical, the functionally similar and/or similar characteristic of structure of the general expression of identical label.
The specific embodiment
The best mode that is used for embodiment of the present invention is described below with reference to accompanying drawing.
At first, with reference to figure 1, with the exemplary well logging downhole toolbus system of describing according to the embodiment of the invention 100 based on twisted-pair Ethernet.Said well logging downhole toolbus system 100 comprises: downhole instrument 1
1, 1
21
nDown-hole the spread of the rumours 2; And with downhole instrument 1
1, 1
21
nBut be connected with down-hole the spread of the rumours 2 communications ground, as the twisted-pair Ethernet 3 of down-hole bus.Downhole instrument 1
1, 1
21
nCan comprise communication board 4
1, 4
24
n, be used for carrying out transfer of data with the down-hole bus.In a preferred embodiment, said communication board 4
1, 4
24
nCan be unified.Said down-hole the spread of the rumours 2 can comprise the communication board 5 as gateway and routing module, is used for and downhole instrument 1
1, 1
21
nAnd the well logging computer of ground system carries out transfer of data.
In an embodiment of the present invention, downhole instrument comprises polytype, includes but not limited to magnetic orientator, natural gamma appearance, fluid density appearance, pressure appearance, thermometer, water holdup tool, flow meter, caliper.As shown in Figure 1, one or more downhole instruments and down-hole the spread of the rumours 2 constitute a LAN, and preferably, this LAN adopts T type topological structure, and in addition, this LAN adopts and can adopt known TCP and udp protocol etc. as communications protocol.As shown in Figure 1ly go out, gateway of down-hole the spread of the rumours 2 and routing module (not shown) be as the gateway and the router of this LAN, and downhole instrument is then as the T type node of this LAN.Preferably, each said downhole instrument all has the good static ip address of predefine and MAC Address and identical downhole instrument IP address unanimity, and each communication board all has different unique MAC Addresss.In a preferred embodiment of the invention, said communication board also comprises the memory that stores firmware, and said firmware can carry out remote online through network to be upgraded.
Fig. 2 is the block diagram that is used for the communication board of well logging downhole toolbus illustrated in fig. 1 system 100.As shown in Figure 2, with the communication board 4 of Fig. 1
1Be example, communication board 4
1Comprise: flush bonding processor 42, it is through obtaining the data of downhole instrument with synchronous serial interface 41 communications of downhole instrument; Digital signal processor (DSP) 43 calculates and handles the data that flush bonding processor 42 is obtained thereby be connected to said flush bonding processor 42; Ethernet control chip 45 is connected to said flush bonding processor 42, calculates and handles and by the data behind the flush bonding processor 42 adjustment forms, be the Ethernet data bag according to communications protocol with this data transaction subsequently thereby receive through digital signal processor 43; Ethernet switching chip 47 converts Ethernet data bag signal into the twisted-pair feeder signal and is sent on the bus of down-hole; Isolating transformer 46 is connected between ethernet control chip and the Ethernet switching chip, is used to be isolated into the Ethernet data bag signal and the twisted-pair feeder signal of Ethernet differential signal.The main effect of isolating transformer 46 is signal level coupling and Signal Spacing, in particular for: the first, enhancing signal makes the transmission range of signal farther; The second, make ethernet control chip 45 and external isolation, strengthened the antijamming capability of this chip 45 greatly, and this chip 45 has been strengthened protection; The 3rd, when communication board is received the network of varying level, can not impact equipment each other.
Communication board 4
1Major function be to obtain instrument data and be forwarded to industry ethernet.As shown in Figure 2, communication board 4
1Core be flush bonding processor 42 and digital signal processor 43.In an embodiment of the present invention; A kind of method of using well logging downhole toolbus system to log well can may further comprise the steps: by flush bonding processor 42 through obtaining instrument data with synchronous serial interface 41 communications; The data of being obtained can be stored in the memory 44, and said memory for example is random-access memory (ram) or flash memory (FLASH); Calculate and handle through the 43 pairs of data of being obtained of digital signal processor that are connected to flush bonding processor 42 subsequently; Resulting result sends to ethernet control chip 47 through flush bonding processor 42 adjustment data formats; Be the packet of Ethernet differential signal according to agreement (for example TCP/UDP etc.) with data transaction by ethernet control chip 47 again; This packet is isolated through isolating transformer 46, converts Ethernet data bag signal into the twisted-pair feeder signal by Ethernet switching chip 47 again and is sent on the down-hole bus 3.The general transmitting-receiving of twisted-pair Ethernet differential signal separately; The effect of Ethernet switching chip 47 is exactly to carry out communication with bus again after bus upward signal, bus downstream signal and itself upward signal, downstream signal are handled respectively, otherwise the upward signal of itself, downstream signal will with the signal conflict on the bus.
The advantage of whole realization proposal is following:
1, uses the TCP/IP standard agreement; Can dock with any network equipment, and make things convenient for the management software exploitation, so that by means of ICP/IP protocol operated from a distance, control bus system; And remotely service equipment, instrument, and firmware of equipment, instrument etc. upgraded.
2, the downhole instrument networking is very simple and convenient, just can communication as long as configure the IP address.
3, the network bandwidth is high, is fit to follow-up expansion exploitation.The down-hole bus bandwidth has 10M/100Mbps even higher communication speed.
Understand that some characteristic that for clarity sake in the context of independent embodiment, describe, invention also can be provided among the single embodiment with being combined.On the contrary, also can be provided individually or with any suitable son combination for some characteristic that in the context of single embodiment, describe for purpose of brevity, invention.
Although invention combines its specific embodiment to be described, obvious many changes, modification and modification are to it will be readily apparent to those skilled in the art that.Therefore, be intended to contain change, modification and the modification in all such spirit that fall into accompanying claims and the broad range.In addition, in this application the quoting or identify should not be interpreted as and admit that such reference can be used as prior art of the present invention of any reference.
Claims (11)
1. well logging downhole toolbus system (100) based on twisted-pair Ethernet comprising:
Downhole instrument (1
1, 1
21
n), comprise communication board (4
1, 4
24
n);
Down-hole the spread of the rumours (2) comprises the communication board (5) as gateway and routing module;
Wherein said downhole instrument (1
1, 1
21
n) with said down-hole the spread of the rumours (2) between adopt twisted-pair Ethernet as down-hole bus (3) but come communication ground to be connected, thereby the formation LAN;
It is characterized in that said communication board (4
1, 4
24
n) dock and said communication board (4 with down-hole bus (3)
1, 4
24
n) further comprise:
-flush bonding processor (42) is through obtaining the data of downhole instrument with synchronous serial interface (41) communication;
-digital signal processor (43), be connected to said flush bonding processor (42) thus the data that flush bonding processor (42) is obtained are calculated and are handled;
-ethernet control chip (45); Be connected to said flush bonding processor (42); Calculate and handle and, be the Ethernet data bag according to communications protocol with this data transaction subsequently thereby receive by the data behind flush bonding processor (42) the adjustment form through digital signal processor (43);
-Ethernet switching chip (47) converts Ethernet data bag signal into the twisted-pair feeder signal and is sent on the down-hole bus (3);
-isolating transformer (46) is connected between ethernet control chip (45) and the Ethernet switching chip (47), and the signal coupling and the level that are used between the different Ethernets are isolated.
2. well logging downhole toolbus system as claimed in claim 1 (100), wherein said down-hole bus (3) adopt T type topological structure.
3. well logging downhole toolbus system as claimed in claim 1 (100), wherein said downhole instrument (1
1, 1
21
n) communication board (4 that adopted
1, 4
24
n) be identical.
4. well logging downhole toolbus system as claimed in claim 1 (100), wherein said downhole instrument (1
1, 1
21
n) in each the good static ip address of predefine and MAC Address and identical downhole instrument (1 are all arranged
1, 1
21
n) the IP address consistent, and communication board (4
1, 4
24
n) in each all have different unique MAC Addresss.
5. well logging downhole toolbus system as claimed in claim 1 (100), wherein said communication board (4
1, 4
24
n) also comprising the memory (44) that stores firmware, said firmware can pass through the network remote online updating.
6. well logging downhole toolbus system as claimed in claim 1 (100), wherein said communications protocol comprises TCP, udp protocol.
7. well logging downhole toolbus system as claimed in claim 1 (100), wherein said downhole instrument (1
1, 1
21
n) comprising: magnetic orientator, natural gamma appearance, fluid density appearance, pressure appearance, thermometer, water holdup tool, flow meter, caliper.
8. method of using claim 1 described well logging downhole toolbus system (100) to log well is characterized in that comprising and obtains downhole instrument (1
1, 1
21
n) data and be forwarded to the step of down-hole bus (3).
9. method as claimed in claim 8, the wherein said downhole instrument (1 that obtains
1, 1
21
n) data and the step that is forwarded to down-hole bus (3) comprise following substep:
By flush bonding processor (42) through obtaining the data of downhole instrument with synchronous serial interface (41) communication;
By digital signal processor (43) data that flush bonding processor (42) is obtained are calculated and handled;
Receive through digital signal processor by ethernet control chip (45) and to calculate and to handle and, according to communications protocol these data are converted to the Ethernet data bag subsequently by the data behind flush bonding processor (42) the adjustment form;
By isolating transformer (46) Ethernet data bag signal and twisted-pair feeder signal are isolated; And
Converting Ethernet data bag signal into the twisted-pair feeder signal by Ethernet switching chip (47) is sent on the bus of down-hole.
10. method as claimed in claim 8, wherein said method also comprise the firmware that network remote online updating memory is stored.
11. method as claimed in claim 8, wherein said communications protocol comprises 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 true CN102839972A (en) | 2012-12-26 |
| CN102839972B 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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Cited By (5)
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| 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 |
| CN104299394A (en) * | 2013-07-19 | 2015-01-21 | 电子科技大学 | Network logging simulation method |
| CN104763413A (en) * | 2015-03-10 | 2015-07-08 | 中国海洋石油总公司 | Data bus, system and data transmission method for underground logging instruments |
| 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 |
| CN111344473A (en) * | 2017-11-14 | 2020-06-26 | 沙特阿拉伯石油公司 | Remotely operated inflow control valve |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104299394A (en) * | 2013-07-19 | 2015-01-21 | 电子科技大学 | Network logging simulation method |
| 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 |
| CN104763413A (en) * | 2015-03-10 | 2015-07-08 | 中国海洋石油总公司 | Data bus, system and data transmission method for underground logging instruments |
| 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 |
| CN111344473A (en) * | 2017-11-14 | 2020-06-26 | 沙特阿拉伯石油公司 | 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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Granted publication date: 20170322 Termination date: 20210621 |