CN111882850A - Optical fiber logging data transmission system based on TCP/IP protocol and working method thereof - Google Patents
Optical fiber logging data transmission system based on TCP/IP protocol and working method thereof Download PDFInfo
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- CN111882850A CN111882850A CN202010530633.9A CN202010530633A CN111882850A CN 111882850 A CN111882850 A CN 111882850A CN 202010530633 A CN202010530633 A CN 202010530633A CN 111882850 A CN111882850 A CN 111882850A
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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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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Abstract
The invention discloses an optical fiber logging data transmission system based on a TCP/IP protocol and a working method thereof, belonging to the technical field of petroleum and natural gas exploration and development. The device comprises a control and acquisition module, a power supply module, an auxiliary signal measurement module and a photoelectric conversion module which are arranged on the well, a logging torpedo connector arranged under the well, a photoelectric slip ring and a photoelectric composite cable which are connected with the parts on the well and under the well. The method is characterized in that an open information network logging platform is constructed by applying high-speed optical cable communication and Ethernet bus technology, the transmission of logging operation optical signals is realized, the logging data transmission rate is improved to 100Mbps from 1Mbps, the technical bottleneck of cable data transmission is thoroughly solved, technical support is provided for the research and development of a new generation of array imaging instrument, the measurement precision, the information quantity, the image resolution and the logging speed of the instrument are improved, the well occupying time is reduced, the operation risk is reduced, and the production efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of petroleum and natural gas exploration and development, and particularly relates to an optical fiber logging data transmission system based on a TCP/IP protocol and a working method thereof.
Background
At present, the well logging data transmission system of various companies at home and abroad is based on an armored cable. The DC resistance of the cable core is about 25 ohm/km, the distributed capacitance is about 0.1uF/km, and the distributed inductance is about 2uF/km when the signal frequency is MHz, so the signal transmission frequency bandwidth of the logging cable is only about 100Hz-100kHz, and the cable transmission rate of each logging company at home and abroad is less than 2 Mbps. With the development of well logging technology, new instruments are developed in the direction of signal digitization, transmission and receiving probe array, so that the information amount of well logging data is rapidly increased. The cable used as an information transmission medium limits the data transmission rate between the underground and the ground, influences the logging speed for a long time, and restricts the development of the big data information acquisition technology of modern underground instruments.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides an optical fiber logging data transmission system based on a TCP/IP protocol and a working method thereof, which apply high-speed optical cable communication and Ethernet bus technology to construct an open information network logging platform, thoroughly solve the technical bottleneck of cable data transmission, provide technical support for the research and development of a new generation of array imaging instruments, improve the measurement precision, information quantity, image resolution and logging speed of the instruments, reduce the well-occupying time, reduce the operation risk and improve the production efficiency.
The invention is realized by the following technical scheme:
the invention discloses an optical fiber logging data transmission system based on a TCP/IP protocol, which comprises a control and acquisition module, a power supply module, an auxiliary signal measurement module, a photoelectric conversion module, a photoelectric slip ring, a photoelectric composite cable and a logging torpedo connector, wherein the control and acquisition module is connected with the power supply module;
the control and acquisition module, the power supply module, the auxiliary signal measurement module and the photoelectric conversion module are arranged on the well, and the control and acquisition module is respectively connected with the power supply module, the auxiliary signal measurement module and the photoelectric conversion module through network cables; the auxiliary signal measurement module comprises a time server capable of establishing an acquisition time stamp mechanism; the power supply module is connected with the photoelectric slip ring through a cable, and the photoelectric conversion module is connected with the photoelectric slip ring through an optical cable; the photoelectric slip ring is connected with the logging torpedo connector through a photoelectric composite cable; an insulating layer is arranged outside the logging torpedo connector;
when the device works, the logging torpedo connector is connected with an underground instrument.
Preferably, a high-temperature-resistant electro-optical conversion module is arranged in the logging torpedo connector, and the lower end of the photoelectric composite cable is hermetically fixed in the logging torpedo connector and connected with the high-temperature-resistant electro-optical conversion module.
Further preferably, the optical cable of the photoelectric composite cable is connected with the optical joint of the high-temperature-resistant photoelectric conversion module, the cable of the photoelectric composite cable is connected with the power supply module of the downhole instrument through the electric plug of the logging torpedo connector, and the network interface of the high-temperature-resistant photoelectric conversion module is connected with the network interface of the downhole instrument.
Preferably, the cable in the photoelectric composite cable is a seven-core cable, wherein 1 and 4 cores are used for main alternating current main power supply, 2 cores are used for providing a direct current high-voltage positive power supply, 3 cores are used for providing an emergency leg-retracting power supply, 5 cores are used for providing an N electrode loop, 6 cores are used for providing a direct current high-voltage negative power supply, and 7 cores are used for carrying out SP natural potential transmission.
The invention discloses a working method of the optical fiber logging data transmission system based on the TCP/IP protocol, which comprises the following steps:
the control and acquisition module realizes the acquisition of data and the issuing of commands through a network cable and power supply module, an auxiliary signal measurement module and a photoelectric conversion module based on a TCP/IP protocol; the power supply module supplies main alternating current, auxiliary alternating current, main direct current and auxiliary direct current voltages to the underground instrument through the photoelectric slip ring and the photoelectric composite cable; the photoelectric conversion module converts an optical signal carrying logging information into Ethernet data and transmits the Ethernet data to the control and acquisition module, and simultaneously converts a control command sent by the control and acquisition module through a network cable into an optical signal and transmits the optical signal to an underground instrument.
Preferably, the auxiliary signal measurement module collects the natural potential SP, the magnetic mark MMD, the collar CCL and the depth information with the time mark, a collection time marking mechanism is established through a time server, the time server and a corresponding protocol complete the time synchronization of information collection of each instrument, and the logging data with the time mark accurately corresponds to a corresponding depth point.
Preferably, the control and acquisition module is internally provided with ACME3 logging acquisition control software.
Preferably, the photoelectric conversion module realizes the interconversion between the optical signal based on 4B5B code and the Ethernet data based on MLT-3 code.
Preferably, the high-temperature-resistant electro-optical conversion module realizes the interconversion between the optical signal based on 4B5B code and the Ethernet data based on MLT-3 code.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention discloses an optical fiber logging data transmission system based on a TCP/IP protocol, which comprises a control and acquisition module, a power supply module, an auxiliary signal measurement module and a photoelectric conversion module which are arranged on the well, a logging torpedo connector, a photoelectric slip ring and a photoelectric composite cable, wherein the photoelectric slip ring and the photoelectric composite cable are arranged under the well, the photoelectric slip ring is used for connecting the underground part with the aboveground part, and the photoelectric slip ring ensures that a ground photoelectric connecting line is static when the photoelectric composite cable rotates, so that the safety and the stability of the system are improved. The insulating layer is arranged outside the logging torpedo connector, so that the stability of communication is guaranteed. The method is characterized in that an open information network logging platform is constructed by applying high-speed optical cable communication and Ethernet bus technology, the transmission of logging operation optical signals is realized, the logging data transmission rate is improved to 100Mbps from 1Mbps, the technical bottleneck of cable data transmission is thoroughly solved, technical support is provided for the research and development of a new generation of array imaging instrument, the measurement precision, the information quantity, the image resolution and the logging speed of the instrument are improved, the well occupying time is reduced, the operation risk is reduced, and the production efficiency is improved. Meanwhile, as the optical fiber logging system adopts a networked architecture design, the transmission time interval of each frame of data is uncertain, a corresponding time mark is marked on the data uploaded by each frame through a time server, the logging data with the time mark accurately corresponds to a corresponding depth point, and the corresponding conversion of the time and the depth of each frame of data is realized while the data is processed by a control and acquisition module.
The invention discloses a working method of the optical fiber logging data transmission system based on the TCP/IP protocol, which is simple and convenient to operate and high in automation degree, greatly reduces logging operation risks and improves logging efficiency.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a TCP/IP protocol-based optical fiber logging data transmission system of the present invention;
fig. 2 is a schematic block diagram of the photoelectric conversion module.
In the figure: 1-a control and acquisition module, 2-a power supply module, 3-an auxiliary signal measurement module, 4-a photoelectric conversion module, 5-a photoelectric slip ring, 6-a photoelectric composite cable, 7-a logging torpedo connector, 8-a high-temperature-resistant photoelectric conversion module and 9-a downhole instrument.
Detailed Description
The invention will now be described in further detail with reference to the following drawings and specific examples, which are intended to be illustrative and not limiting:
FIG. 1 is a TCP/IP protocol-based optical fiber logging data transmission system of the present invention, which is mainly composed of three parts: the ground system, the transmission medium and the underground high-temperature resistant electro-optical conversion module:
the ground system comprises a control and acquisition module 1, a power supply module 2, an auxiliary signal measurement module 3 and a photoelectric conversion module 4. The control and acquisition module 1 is based on a TCP/IP protocol and realizes data acquisition and command issuing with the power module 2, the auxiliary signal measurement module 3 and the photoelectric conversion module 4. Because the system adopts a networked architecture design, the transmission time interval of each frame of data is uncertain, a corresponding time mark is marked on the data uploaded by each frame, the logging data with the time marks accurately correspond to corresponding depth points, and the corresponding conversion of the time and the depth of each frame of data is realized while the data is processed by the control and acquisition module 1. The power module 2 supplies main alternating current, auxiliary alternating current, main direct current and auxiliary direct current voltages to an underground instrument through the photoelectric slip ring. The auxiliary signal measuring module 3 realizes the collection of information such as natural potential SP, magnetic marks MMD, collar CCL, depth with time marks and the like, is provided with a time server, establishes a collection time marking mechanism, and completes the time synchronization of the information collection of each instrument by the time server and a corresponding protocol. The ground photoelectric conversion module 4 converts the optical signal carrying the logging information into ethernet data and transmits the ethernet data to the control and acquisition module, and simultaneously converts the control command issued by the control and acquisition module 1 through the network cable into an optical signal and transmits the optical signal to the downhole instrument 9, thereby realizing the interconversion between the optical signal based on 4B5B coding and the ethernet data based on MLT-3 codes, as shown in fig. 2.
The transmission medium comprises a photoelectric slip ring 5, a photoelectric composite cable 6 for bearing charge detection and a logging torpedo connector 7, the photoelectric slip ring 5 can realize transmission of seven paths of electric signals and two paths of optical signals, the output voltage of the ground power supply module 2 is transmitted to the seven-core cable of the photoelectric composite cable 6 through an electric connector of the photoelectric slip ring 5, the optical signals output by the photoelectric slip ring 5 are transmitted to the photoelectric conversion module 4 to realize conversion from the optical signals to Ethernet data, and the photoelectric slip ring 5 ensures that the ground optical connection line is static when the photoelectric composite cable 6 rotates. The photoelectric composite cable 6 comprises seven cables and two optical fibers and transmits optical signals based on 4B5B codes to the surface. The power supply of the ground and underground instrument, SP natural potential signal transmission and an N electrode loop are realized by seven cables of the photoelectric composite cable 6, 1 and 4 cores supply main alternating current main power, 2 cores provide a direct current high-voltage positive power supply, 6 cores provide a direct current high-voltage negative power supply, 3 cores provide an emergency leg collecting power supply, 5 cores provide the N electrode loop, and 7 cores perform SP natural potential transmission. The optical fiber of the photoelectric composite cable 6 realizes the optical signal transmission between the ground and the underground instrument, and transmits the underground Ethernet data to the ground through the optical signal, thereby realizing the data transmission function between the underground instrument 9 and the ground system based on the TCP/IP protocol. The lower end of the photoelectric composite cable 6 is sealed in the logging torpedo connector 7, and the underground high-temperature-resistant electro-optical conversion module 8 is placed on the framework of the logging torpedo connector 7, so that mutual conversion between optical signals based on 4B5B codes and Ethernet data based on MLT-3 codes is realized. An insulating layer is arranged outside the logging torpedo connector 7; the optical fiber of the photoelectric composite cable 6 in the logging torpedo connector 7 is connected with the optical joint of the underground high-temperature-resistant electro-optical conversion module 8, the lower part of the logging torpedo connector 7 is completely an electric signal, and the logging torpedo connector can be directly connected with the existing instrument without changing the mechanical structure of the existing instrument. The high temperature resistant electro-optical conversion module 8 converts the Ethernet data of the downhole instrument 9 into optical signals and transmits the optical signals to the photoelectric conversion module 4 on the ground, and 100Mbps data communication is realized.
The ACME3 logging acquisition control software built in the control and acquisition module 1 adopts a three-layer system architecture, has the characteristics of highly reliable multi-channel data acquisition, an open bottom platform, visual logging service configuration, rich data display, convenient instrument hanging connection and the like, can perform real-time logging process control, real-time logging quality control, logging data management control and system service control, and can complete logging data acquisition, processing, display, drawing/recording and rapid visual interpretation.
It should be noted that the above description is only a part of the embodiments of the present invention, and equivalent changes made to the system described in the present invention are included in the protection scope of the present invention. Persons skilled in the art to which this invention pertains may substitute similar alternatives for the specific embodiments described, all without departing from the scope of the invention as defined by the claims.
Claims (9)
1. An optical fiber logging data transmission system based on a TCP/IP protocol is characterized by comprising a control and acquisition module (1), a power supply module (2), an auxiliary signal measurement module (3), a photoelectric conversion module (4), a photoelectric slip ring (5), a photoelectric composite cable (6) and a logging torpedo connector (7);
the control and acquisition module (1), the power supply module (2), the auxiliary signal measurement module (3) and the photoelectric conversion module (4) are arranged on the well, and the control and acquisition module (1) is respectively connected with the power supply module (2), the auxiliary signal measurement module (3) and the photoelectric conversion module (4) through network cables; the auxiliary signal measurement module (3) comprises a time server capable of establishing an acquisition time stamp mechanism; the power supply module (2) is connected with the photoelectric slip ring (5) through a cable, and the photoelectric conversion module (4) is connected with the photoelectric slip ring (5) through an optical cable; the photoelectric slip ring (5) is connected with a logging torpedo connector (7) through a photoelectric composite cable (6); an insulating layer is arranged outside the logging torpedo connector (7);
when the device works, the logging torpedo connector (7) is connected with the downhole instrument (9).
2. The optical fiber logging data transmission system based on the TCP/IP protocol of claim 1, wherein a high temperature resistant electro-optical conversion module (8) is arranged inside the logging torpedo connector (7), and the lower end of the photoelectric composite cable (6) is hermetically fixed inside the logging torpedo connector (7) and connected with the high temperature resistant electro-optical conversion module (8).
3. The optical fiber logging data transmission system based on the TCP/IP protocol of claim 2, characterized in that the optical cable of the optical-electrical composite cable (6) is connected with the optical connector of the high temperature resistant electro-optical conversion module (8), the cable of the optical-electrical composite cable (6) is connected with the power supply module of the downhole instrument (9) through the electrical plug of the logging torpedo connector (7), and the network interface of the high temperature resistant electro-optical conversion module (8) is connected with the network interface of the downhole instrument (9).
4. The optical fiber logging data transmission system based on the TCP/IP protocol of claim 1, wherein the cable in the photoelectric composite cable (6) is a seven-core cable, wherein 1 and 4 cores are used for main AC power supply, 2 cores are used for providing a DC high-voltage positive power supply, 3 cores are used for providing an emergency leg receiving power supply, 5 cores are used for providing an N-electrode loop, 6 cores are used for providing a DC high-voltage negative power supply, and 7 cores are used for SP natural potential transmission.
5. The working method of the optical fiber logging data transmission system based on the TCP/IP protocol according to any one of claims 1 to 4, characterized by comprising the following steps:
the control and acquisition module (1) realizes the acquisition of data and the issuing of commands through a network cable and power supply module (2), an auxiliary signal measurement module (3) and a photoelectric conversion module (4) based on a TCP/IP protocol; the power supply module (2) supplies main alternating current, auxiliary alternating current, main direct current and auxiliary direct current voltages to an underground instrument (9) through the photoelectric slip ring (5) and the photoelectric composite cable (6); the photoelectric conversion module (4) converts an optical signal carrying logging information into Ethernet data and transmits the Ethernet data to the control and acquisition module (1), and simultaneously converts a control command issued by the control and acquisition module (1) through a network cable into an optical signal and transmits the optical signal to the underground instrument (9).
6. The working method of the optical fiber logging data transmission system based on the TCP/IP protocol according to claim 5, wherein the auxiliary signal measurement module (3) collects the depth information of the natural potential SP, the magnetic marker MMD, the collar CCL and the time mark, the collection time mark mechanism is established through the time server, the time server and the corresponding protocol complete the time synchronization of the information collection of each instrument, and the logging data with the time mark accurately corresponds to the corresponding depth point.
7. The working method of the optical fiber logging data transmission system based on the TCP/IP protocol as claimed in claim 5, wherein the control and acquisition module (1) is embedded with ACME3 logging acquisition control software.
8. The working method of the optical fiber logging data transmission system based on the TCP/IP protocol as recited in claim 5, characterized in that the photoelectric conversion module (4) realizes the interconversion between the optical signal based on 4B5B code and the Ethernet data based on MLT-3 code.
9. The working method of the optical fiber logging data transmission system based on the TCP/IP protocol as recited in claim 5, characterized in that the high temperature resistant electro-optical conversion module (8) realizes the interconversion between the optical signal based on 4B5B code and the Ethernet data based on MLT-3 code.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113285755A (en) * | 2021-05-24 | 2021-08-20 | 西安格威石油仪器有限公司 | Logging instrument bus system |
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2020
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| WO2004020790A2 (en) * | 2002-08-30 | 2004-03-11 | Sensor Highway Limited | Method and apparatus for logging a well using fiber optics |
| CN102811147A (en) * | 2011-06-02 | 2012-12-05 | 中国石油集团长城钻探工程有限公司 | Networked well logging system and communication method thereof |
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| CN113285755A (en) * | 2021-05-24 | 2021-08-20 | 西安格威石油仪器有限公司 | Logging instrument bus system |
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Application publication date: 20201103 |