CN113285755A - Logging instrument bus system - Google Patents
Logging instrument bus system Download PDFInfo
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- CN113285755A CN113285755A CN202110567787.XA CN202110567787A CN113285755A CN 113285755 A CN113285755 A CN 113285755A CN 202110567787 A CN202110567787 A CN 202110567787A CN 113285755 A CN113285755 A CN 113285755A
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- logging
- logging instrument
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- optical fiber
- instrument
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- 239000013307 optical fiber Substances 0.000 claims abstract description 39
- 238000006243 chemical reaction Methods 0.000 claims abstract description 28
- 239000000835 fiber Substances 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 9
- 230000005693 optoelectronics Effects 0.000 claims 1
- 230000003287 optical effect Effects 0.000 description 16
- 230000005540 biological transmission Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
- G08C23/06—Non-electrical signal transmission systems, e.g. optical systems through light guides, e.g. optical fibres
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Abstract
The invention provides a bus system of a logging instrument, wherein the logging instrument comprises an upper connector, a photoelectric conversion module and a lower connector, and the upper connector, the photoelectric conversion module and the lower connector of each logging instrument are connected to an optical fiber bus.
Description
Technical Field
The invention relates to the technical field of bus structures, in particular to a bus system of a logging instrument.
Background
The existing logging system consists of a logging ground system, logging software, downhole telemetry, a logging cable and a downhole instrument, wherein data exchange between the logging ground system and the downhole instrument is realized by firstly exchanging data between the downhole instrument and the downhole telemetry through a logging instrument bus, then performing data exchange between the downhole telemetry and the logging ground system through the logging cable and the ground telemetry in the logging ground system, namely, data between the logging ground system and the downhole instrument in the logging system are forwarded through telemetry relay.
The existing Bus of the logging instrument is connected by a cable to transmit electrical signals, such as a Data Transfer Bus (DTB), a Controller Area Network (CAN) Bus, a coaxial Network Bus, and the like. The buses have the defects of weak anti-interference capability and low communication rate, for example, the rate of the coaxial network bus is up to 10Mbps, so how to improve the anti-interference capability of the bus and the communication rate becomes a problem to be solved urgently.
Disclosure of Invention
The invention aims to provide a bus system of a logging instrument, aiming at overcoming the defects of the prior art and solving the problems of low anti-interference capability and low transmission rate of the bus of the logging instrument in the prior art.
In order to solve the above problems, the present invention provides a bus system for a logging tool, wherein the logging tool comprises a photoelectric conversion module, and the photoelectric conversion module of each logging tool is connected to at least one optical fiber bus.
Preferably, the logging instrument further comprises an upper connector and a lower connector, and the upper connector, the photoelectric conversion module and the lower connector of each logging instrument are connected to one optical fiber bus.
Preferably, the logging instrument further comprises an upper connector and a lower connector, wherein the upper connector, the photoelectric conversion module and the lower connector of each logging instrument are connected to m optical fiber buses simultaneously, and m is not less than the number of the logging instruments.
Preferably, the logging instrument further comprises an acquisition processing module, and the acquisition processing module is connected with the photoelectric conversion module through an internal optical fiber.
Preferably, when the upper connector, the photoelectric conversion module and the lower connector of each logging instrument are connected to a fiber optic bus, one of the ports at the two ends of the fiber optic bus is connected to a logging ground system.
Preferably, the m optical fiber buses are connected in parallel and are simultaneously connected to a logging ground system.
By applying the bus system of the logging instrument provided by the embodiment of the invention, the logging ground system and the logging instrument are directly connected through the cable optical fiber bus by using the logging optical fiber cable, so that the forwarding process of an underground remote transmission instrument is eliminated, the structure of the logging system is simplified, and the reliability of the logging system is improved. Because the logging instruments are connected through the optical fiber bus, the electromagnetic interference is avoided, the data anti-interference capability is strong, and because the frequency of the optical signal is higher than that of the electric signal, the data transmission rate is high, and the anti-interference capability and the transmission rate of the bus are improved.
Drawings
FIG. 1 is a schematic diagram of a logging tool bus system provided by an embodiment of the present invention;
FIG. 2 is another schematic diagram of a logging tool bus system according to an embodiment of the invention.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be further noted that, for the convenience of description, only the portions related to the related invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Fig. 1 is a schematic diagram of a bus system of a logging tool according to an embodiment of the present invention, in which the logging tool includes a logging tool 1 and a logging tool 2 … …, each logging tool includes an upper connector (not shown in fig. 1), a photoelectric conversion module, a lower connector (not shown in fig. 1), and an acquisition processing module, the upper connector is a connector connected between a current logging tool and a previous logging tool, the lower connector is a connector connected between the current logging tool and a next logging tool, the photoelectric conversion module is a module for converting optical signals into electrical signals, and is a module for converting received optical signals into electrical signals, the acquisition processing module is a module for processing acquired data inside the logging tool, for example, the logging tool includes various sensors, such as a temperature sensor, a gravity sensor, and the like, the data acquired by the sensors are processed by the acquisition processing module, and converted by the photoelectric conversion module, thereby converting the electrical signal into an optical signal. The photoelectric conversion module of each logging instrument is connected to at least one optical fiber bus. Therefore, the logging optical fiber cable is utilized to directly connect the logging ground system and the logging instrument through the cable optical fiber bus, the forwarding process of the underground remote transmission instrument is eliminated, the structure of the logging system is simplified, and the reliability of the logging system is improved.
The upper joint, the lower joint and the photoelectric conversion module of each logging instrument are connected to the same optical fiber bus, and optical signals of any one of the upper joint, the photoelectric conversion module and the lower joint are transmitted to the other two optical fiber buses.
Specifically, for each logging instrument, the optical signal of the last logging instrument received by the upper joint can be transmitted to the photoelectric conversion module and the lower joint simultaneously, the optical signal of the next logging instrument received by the lower joint can be transmitted to the upper joint and the photoelectric conversion module simultaneously, and the optical signal sent by the photoelectric conversion module can be transmitted to the upper joint and the lower joint simultaneously, so that the optical signal of any one of the upper joint, the lower joint and the photoelectric conversion module in the logging instrument can be transmitted to the other two logging instruments. Because the optical signal is transmitted, the anti-interference capability is strong because the optical signal is not influenced by electromagnetic interference, and the transmission speed is high because the frequency of the optical signal is far higher than that of the electric signal.
FIG. 2 is a schematic diagram of a logging tool bus system according to an embodiment of the present invention. The logging instrument comprises a logging instrument 1 and a logging instrument 2 … …, wherein an upper connector, a photoelectric conversion module and a lower connector of each logging instrument are connected to m optical fiber buses simultaneously, and m is not less than the number of the logging instruments. At this time, as in fig. 1, the acquisition processing module in the logging instrument is connected to the photoelectric conversion module through the internal optical fiber, the upper connector, the photoelectric conversion module and the lower connector corresponding to one logging instrument are simultaneously connected to each of the plurality of optical fiber buses, and the plurality of optical fiber buses are connected in parallel, that is, one end of each optical fiber bus is connected to the logging ground system through the logging cable. Each logging instrument selects the optical fiber for communication through a first-come-first-obtained selection mechanism, so that each logging instrument can communicate with a logging ground system through an independent optical fiber, each logging instrument cannot be influenced mutually, when one optical fiber is damaged, only the logging instrument communicated with the optical fiber is influenced, and other instruments cannot be influenced.
One of the ports at the two ends of the optical fiber bus is connected to a logging cable, and the logging cable is connected with a logging ground system. All logging instruments are connected through an optical fiber bus, and due to the fact that the optical fiber transmission rate is high, the logging ground system can quickly obtain optical signals transmitted on the optical fiber bus. If data exchange among the logging instruments is required, the logging ground system can send the collected data of the logging instruments 1 to the optical fiber bus corresponding to the logging instruments 2, and the upper joint, the photoelectric conversion module and the lower joint of the logging instruments 2 can simultaneously receive the data of the logging instruments 1, so that the data transmission rate is improved.
When every logging instrument and m fiber bus are connected, m fiber bus are parallelly connected, and are connected on the logging ground system simultaneously to the logging ground system can obtain the optical signal of a plurality of logging instruments simultaneously, when arbitrary optic fibre damages, also can not influence the data transmission between other logging instruments and the logging ground system.
It can be understood that when a plurality of logging instruments correspond to a plurality of optical fiber buses, the optical fiber buses may have optical fiber bus Identifiers (IDs), and the logging instruments also have logging instrument IDs, and the relationship between the logging instruments and the optical fiber bus IDs is stored in the logging ground system, and when data of a certain logging instrument is not received, which specific logging instrument or which optical fiber fails may be determined accordingly. Meanwhile, when the logging ground system obtains the data of each optical fiber bus, the data of a specific logging instrument can be determined according to the packet header of the data.
By applying the bus system of the logging instrument provided by the embodiment of the invention, the logging ground system and the logging instrument are directly connected through the cable optical fiber bus by using the logging optical fiber cable, so that the forwarding process of an underground remote transmission instrument is eliminated, the structure of the logging system is simplified, and the reliability of the logging system is improved. Because the logging instruments are connected through the optical fiber bus, electromagnetic interference is avoided, the anti-interference capability of data is high, data transmission is performed through optical signals, the frequency of the optical signals is higher than that of electric signals, the data transmission speed is high, and the anti-interference capability and the transmission speed of the bus are improved.
Those of skill would further appreciate that the various illustrative components and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware, in a software module executed by a terminal, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The above embodiments are provided to further explain the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the scope of the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. A logging instrument bus system, the logging instrument including a photoelectric conversion module, wherein the photoelectric conversion module of each logging instrument is connected to at least one optical fiber bus.
2. The logging instrument bus system of claim 1, wherein the logging instrument further comprises an upper connector and a lower connector, the upper connector, the photoelectric conversion module, and the lower connector of each logging instrument being connected to a fiber optic bus.
3. The logging instrument bus system of claim 1, wherein the logging instruments further comprise an upper connector and a lower connector, the upper connector, the photoelectric conversion module and the lower connector of each logging instrument are simultaneously connected to m fiber optic buses, and m is not less than the number of logging instruments.
4. A logging instrument bus system as in claim 1, the logging instrument further comprising an acquisition processing module, wherein the acquisition processing module is connected to the optoelectronic conversion module via an internal optical fiber.
5. The logging instrument bus system of claim 1, wherein one of the ports at the two ends of the fiber optic bus is connected to a surface system for logging while the upper, photoelectric conversion modules and lower connectors of each logging instrument are connected to a fiber optic bus.
6. The logging instrument bus system of claim 3, wherein the m fiber optic buses are connected in parallel and simultaneously connected to a logging surface system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110567787.XA CN113285755A (en) | 2021-05-24 | 2021-05-24 | Logging instrument bus system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110567787.XA CN113285755A (en) | 2021-05-24 | 2021-05-24 | Logging instrument bus system |
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| CN113285755A true CN113285755A (en) | 2021-08-20 |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6008900A (en) * | 1998-02-10 | 1999-12-28 | Litton Systems, Inc. | Method and apparatus for calibration of a multi-channel fiber optic interferometric sensor system in a signal processing system |
| US20060102347A1 (en) * | 2002-08-30 | 2006-05-18 | Smith David R | Method and apparatus for logging a well using fiber optics |
| CN101833313A (en) * | 2010-03-29 | 2010-09-15 | 哈尔滨工程大学 | Plastic optical fiber bus optical information coupling device |
| CN102811499A (en) * | 2012-03-20 | 2012-12-05 | 武汉七环电气有限公司 | Mine underground mobile communication system based on 3G (The 3rd Generation Telecommunication) |
| CN203614091U (en) * | 2013-05-20 | 2014-05-28 | 北京华脉世纪石油科技有限公司 | High integration density well logging ground system |
| CN104753598A (en) * | 2014-12-29 | 2015-07-01 | 东莞市启鼎光电科技有限公司 | Communication method for passive beam splitting RS-485 optical fiber bus |
| US20170183958A1 (en) * | 2015-07-30 | 2017-06-29 | Halliburton Energy Services, Inc. | Micro-structured fiber optic cable for downhole sensing |
| CN107730871A (en) * | 2017-10-23 | 2018-02-23 | 长江大学 | A kind of downhole data communication system of well logging apparatus |
| CN109995433A (en) * | 2019-03-08 | 2019-07-09 | 北京航空航天大学 | A kind of fibre optic data transmission device for oil well logging equipment |
| CN111882850A (en) * | 2020-06-11 | 2020-11-03 | 中国石油天然气集团有限公司 | Optical fiber logging data transmission system based on TCP/IP protocol and working method thereof |
-
2021
- 2021-05-24 CN CN202110567787.XA patent/CN113285755A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6008900A (en) * | 1998-02-10 | 1999-12-28 | Litton Systems, Inc. | Method and apparatus for calibration of a multi-channel fiber optic interferometric sensor system in a signal processing system |
| US20060102347A1 (en) * | 2002-08-30 | 2006-05-18 | Smith David R | Method and apparatus for logging a well using fiber optics |
| CN101833313A (en) * | 2010-03-29 | 2010-09-15 | 哈尔滨工程大学 | Plastic optical fiber bus optical information coupling device |
| CN102811499A (en) * | 2012-03-20 | 2012-12-05 | 武汉七环电气有限公司 | Mine underground mobile communication system based on 3G (The 3rd Generation Telecommunication) |
| CN203614091U (en) * | 2013-05-20 | 2014-05-28 | 北京华脉世纪石油科技有限公司 | High integration density well logging ground system |
| CN104753598A (en) * | 2014-12-29 | 2015-07-01 | 东莞市启鼎光电科技有限公司 | Communication method for passive beam splitting RS-485 optical fiber bus |
| US20170183958A1 (en) * | 2015-07-30 | 2017-06-29 | Halliburton Energy Services, Inc. | Micro-structured fiber optic cable for downhole sensing |
| CN107730871A (en) * | 2017-10-23 | 2018-02-23 | 长江大学 | A kind of downhole data communication system of well logging apparatus |
| CN109995433A (en) * | 2019-03-08 | 2019-07-09 | 北京航空航天大学 | A kind of fibre optic data transmission device for oil well logging equipment |
| CN111882850A (en) * | 2020-06-11 | 2020-11-03 | 中国石油天然气集团有限公司 | Optical fiber logging data transmission system based on TCP/IP protocol and working method thereof |
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Application publication date: 20210820 |