CN112682032B - Offshore intelligent downhole data transmission method and device - Google Patents
Offshore intelligent downhole data transmission method and device Download PDFInfo
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- CN112682032B CN112682032B CN202110001798.1A CN202110001798A CN112682032B CN 112682032 B CN112682032 B CN 112682032B CN 202110001798 A CN202110001798 A CN 202110001798A CN 112682032 B CN112682032 B CN 112682032B
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- 230000005236 sound signal Effects 0.000 claims abstract description 56
- 238000006243 chemical reaction Methods 0.000 claims abstract description 34
- 238000012545 processing Methods 0.000 claims abstract description 21
- 238000005553 drilling Methods 0.000 claims description 27
- 238000012544 monitoring process Methods 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 238000012546 transfer Methods 0.000 claims description 5
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention relates to a method and a device for transmitting underground data of an offshore intelligent well, which are characterized by comprising the following steps: the system comprises an operation platform arranged at the sea level, an underwater acoustic communication system arranged on the operation platform, a suction anchor seabed base station arranged at the seabed mud line position, a signal conversion system arranged on the suction anchor seabed base station and a through-the-earth communication system arranged on the seabed; the through-the-earth communication system is used for collecting submarine underground signals and transmitting the submarine underground signals to the signal conversion system in a through-the-earth communication mode; and the signal conversion system converts the received underground signal in the through-the-earth communication form into an underwater sound signal in the underwater sound communication form and then sends the underwater sound signal to the underwater sound communication system for processing. The invention can be widely applied to the field of underground data transmission.
Description
Technical Field
The invention relates to a method and a device for communication use of an intelligent marine oil and gas well, in particular to a method and a device for underground data transmission of an intelligent marine well based on a through-the-earth communication and underwater acoustic communication mode.
Background
The most central problem of intelligent drilling is to solve the data transmission of the underground measurement system. Currently, 2 technologies are mainly used for solving the problem of data transmission of a downhole measurement system, one is to use an intelligent drill rod, however, the technology is limited by high cost and only in a test stage; the other is to use the existing mud pulse data transmission technology, namely the data transmission technology in MWD (Measurement While Drilling), however, the communication data speed of the existing mud pulse data transmission technology is 2-5bit/s, most of measurement data is stored at the bottom of the well in a storage mode, and after the drilling operation is finished, the internal data is read out from the storage, so that the function of transmitting a large amount of underground data cannot be realized.
In addition, intelligent well completion basically relies on limited cables or optical fibers in the well, so that the running of wired monitoring tools in reservoir sections such as horizontal wells cannot be realized, and the need for changing the communication mode is urgent.
Disclosure of Invention
Aiming at the problems, the invention aims to provide a method and a device for transmitting data underground by an offshore intelligent well, which adopt a communication method combining through-the-earth communication and underwater acoustic communication, can effectively solve the technical obstacle that the conventional communication method passes through stratum and water layers, can effectively reduce the signal attenuation problem in stratum communication, and can also perform data signal conversion and relay at a submarine mud line position, thereby transmitting underground data to a platform in two communication modes.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
in a first aspect of the present invention, there is provided an offshore intelligent downhole data transfer device comprising: the system comprises an operation platform arranged at the sea level, an underwater acoustic communication system arranged on the operation platform, a suction anchor seabed base station arranged at the seabed mud line position, a signal conversion system arranged on the suction anchor seabed base station and a through-the-earth communication system arranged on the seabed; the through-the-earth communication system is used for collecting submarine underground signals and transmitting the submarine underground signals to the signal conversion system in a through-the-earth communication mode; and the signal conversion system converts the received underground signal in the through-the-earth communication form into an underwater sound signal in the underwater sound communication form and then sends the underwater sound signal to the underwater sound communication system for processing.
Further, the underwater acoustic communication system comprises an underwater acoustic signal receiver antenna, an underwater acoustic signal receiver and an underwater acoustic signal platform processing system; the underwater sound signal receiver antenna is used for receiving the underwater sound signal sent by the signal conversion system; the underwater sound signal receiver is used for sending the underwater sound signal received by the underwater sound signal receiver antenna to the underwater sound signal platform processing system; the underwater acoustic signal platform processing system is used for reading and processing data of the underwater acoustic signals.
Further, the suction anchor submarine base station comprises a sealed cabin and a suction anchor, wherein the signal conversion system is arranged in the sealed cabin; and a hole for penetrating through a ground communication signal receiving antenna in the signal conversion system is reserved at the contact center of the suction anchor and the stratum.
Further, the suction anchor is a cylinder with a diameter of 600mm and a length of 1.5 m.
Further, the signal conversion system comprises a through-the-earth communication signal receiver, a through-the-earth communication signal amplifier, a through-the-earth communication signal-to-underwater sound signal converter, an underwater sound signal transmitter and an underwater sound signal transmitter antenna; the through-the-earth communication signal receiver penetrates out of the preformed hole at the bottom of the suction anchor and is used for receiving the underground signal sent by the through-the-earth communication system; the through-the-earth communication signal amplifier is used for amplifying the received underground signal; the communication signal-to-underwater acoustic signal converter is used for converting a downhole signal into an underwater acoustic signal; the underwater sound signal transmitter is used for transmitting the converted underwater sound signal to the underwater sound communication system through an underwater sound signal transmitter antenna; the power supply of the through-the-earth communication signal receiver, the through-the-earth communication signal amplifier, the through-the-earth communication signal-to-underwater sound signal converter, the underwater sound signal transmitter and the underwater sound signal transmitter antenna is supplied by power supply of underwater engineering facilities.
Further, the through-the-earth communication system includes a downhole through-the-earth communication signal transmitter for transmitting downhole drilling monitoring data in real time during drilling operations or monitoring data from sensors in the reservoir during completion and production operations.
Further, when drilling operation is carried out, the underground through-the-earth communication signal transmitter is installed on a drilling operation tubular column, the drilling operation tubular column comprises a drill rod, a near-bit measuring tool and a drill bit are arranged at the tail end of the drill rod, the underground through-the-earth communication signal transmitter is arranged adjacent to the near-bit measuring tool, and a shaft is sleeved outside the drill rod and located below a submarine mud line.
Further, when the well completion and production operations are performed, the underground through-the-earth communication signal transmitter is installed on a well completion pipe string, the well completion pipe string is arranged in a well shaft, a well completion packer is arranged at the rear end of the well completion pipe string, and the underground through-the-earth communication signal transmitter is arranged at the front end of the well completion pipe string.
In a second aspect of the present invention, there is provided a method for transmitting data downhole in an offshore intelligent well, comprising the steps of:
1) Before the operation platform starts to operate, a suction anchor seabed base station is arranged at a seabed mud line position, a signal conversion system is arranged in the suction anchor seabed base station, meanwhile, an underwater sound communication system is arranged on the operation platform, and a through-the-earth communication system is arranged on a seabed drilling operation pipe column or a well completion pipe column;
2) The through-the-earth communication system transmits downhole drilling monitoring data in real time during drilling operations or monitoring data from sensors in the reservoir to the signal conversion system during completion and production operations;
3) The signal conversion system converts the received underground signal into an underwater sound signal and sends the underwater sound signal to the underwater sound communication system in an underwater sound communication mode;
4) And after the underwater acoustic communication system receives the underwater acoustic signal, data reading and processing are carried out.
Due to the adoption of the technical scheme, the invention has the following advantages:
1. according to the method, two communication technologies of underwater acoustic communication and through-the-earth communication are combined, a submarine communication base station is established on the seabed, data collected underground is transmitted to a submarine mud line position in an through-the-earth communication mode, the submarine base station is converted into underwater acoustic communication, the data is transmitted to a platform, and the underground data is transmitted and processed.
2. The invention adopts the through-the-earth communication on the sea floor, because the through-the-earth communication adopts the magnetic induction technology, the communication frequency is low frequency and is usually 30 to 300Hz, the transmission rate is 0.5kbits and the error rate is less than 1 percent, and the communication distance is less than or equal to 3000m by taking the adoption of a multi-turn conductor high-power coil as a transmitting and receiving device into consideration.
3. The underwater acoustic communication is adopted in water, and because the underwater acoustic communication adopts the acoustic communication technology, the working frequency band is high frequency, usually 10kHz to 20kHz, and the transmission rate is 0.5kbits, the bit error rate is less than 1%, and the communication distance is less than or equal to 3000m by adopting the main stream DSP processing technology in the industry.
4. In order to realize that the through-the-earth communication signal is converted into the underwater acoustic communication analog signal, the signal is converted into the RS485 data body by adopting the low-frequency communication signal amplifier, and then the RS485 data body is transmitted to the operation platform for analysis through the underwater acoustic analog signal.
Therefore, the invention can be widely applied to the field of underground data transmission.
Drawings
FIG. 1 is a schematic diagram of intelligent drilling data transmission according to the present invention;
FIG. 2 is a schematic diagram of data transmission during intelligent completion or production;
the reference numerals in the figures are as follows: 1. an operation platform; 2. a downhole through-the-earth communication signal transmitter; 3. suction anchor subsea base station; 4. a through-the-earth communication signal receiver; 5. a through-the-earth communication signal amplifier; 6. a through-the-earth communication signal-to-underwater acoustic signal converter; 7. an underwater acoustic signal transmitter; 8. an underwater acoustic signal transmitter antenna; 9. an underwater acoustic signal receiver antenna; 10. an underwater acoustic signal receiver; 11. an underwater acoustic signal platform processing system; 12. a wellbore; 13. a drill rod; 14. a near bit measurement tool; 15. a drill bit; 16. a completion string; 17. completion packers.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
As shown in fig. 1, the present invention provides an offshore intelligent downhole data transmission device, which includes: the system comprises an operation platform arranged at the sea level, an underwater acoustic communication system arranged on the operation platform, a suction anchor seabed base station arranged at the seabed mud line position, a signal conversion system arranged on the suction anchor seabed base station and a through-the-earth communication system arranged on the seabed. The system comprises a communication system, a signal conversion system, a communication system and a communication system, wherein the communication system is used for collecting submarine underground signals and transmitting the submarine underground signals to the signal conversion system in a through-the-earth communication mode; the signal conversion system converts the received underground signal in the through-the-earth communication form into an underwater sound signal in the underwater sound communication form and sends the underwater sound signal to the underwater sound communication system for processing.
Further, the underwater acoustic communication system includes an underwater acoustic signal receiver antenna 9, an underwater acoustic signal receiver 10, and an underwater acoustic signal platform processing system 11. The underwater sound signal receiver antenna 9 is used for receiving the underwater sound signal sent by the signal conversion system; the underwater sound signal receiver is used for sending the underwater sound signal received by the underwater sound signal receiver antenna 9 to the underwater sound signal platform processing system 11; the underwater acoustic signal platform processing system 11 is used for reading and processing data of the underwater acoustic signal.
Further, the suction anchor seabed base station 3 comprises a sealed cabin and a suction anchor, and a signal conversion system is arranged in the sealed cabin; the bottom of the sealed cabin is provided with a suction anchor, and a hole for the through ground communication signal receiving antenna to penetrate is reserved at the contact center of the suction anchor and the stratum.
Further, the suction anchor is preferably a cylinder of 600mm diameter and length 1.5m in size and is mounted to the sea floor by means of a suction anchor tool.
Further, the signal conversion system includes a through-the-earth communication signal receiver 4, a through-the-earth communication signal amplifier 5, a through-the-earth communication signal-to-underwater sound signal converter 6, an underwater sound signal transmitter 7, and an underwater sound signal transmitter antenna 8. The through-the-earth communication signal receiver 4 penetrates out of a preformed hole at the bottom of the suction anchor and is used for receiving a downhole signal sent by the through-the-earth communication system; the through-the-earth communication signal amplifier 5 is used for amplifying the received downhole signal; the communication signal-to-underwater acoustic signal converter 6 is used for converting the downhole signal into an underwater acoustic signal; the underwater acoustic signal transmitter 7 is used for transmitting the converted underwater acoustic signal to the underwater acoustic communication system through the underwater acoustic signal transmitter antenna 8; the power supply of the through-the-earth communication signal receiver 4, the through-the-earth communication signal amplifier 5, the through-the-earth communication signal-to-underwater sound signal converter 6, the underwater sound signal transmitter 7 and the underwater sound signal transmitter antenna 8 is supplied by power from an underwater engineering facility.
Further, the through-the-earth communication system includes a downhole through-the-earth communication signal transmitter 2 for transmitting downhole well monitoring data in real time during well drilling operations or monitoring data from sensors in the reservoir during well completion and production operations.
Further, as shown in fig. 1, under the drilling operation condition, the underground through-the-earth communication signal transmitter 2 is installed on a drilling operation pipe column, the drilling operation pipe column comprises a drill rod 13, a shaft 12 is sleeved outside the drill rod 13 located below a seabed mud line, a near-bit measuring tool 14 and a bit 15 are arranged at the tail end of the drill rod 13, and the underground through-the-earth communication signal transmitter 2 is arranged adjacent to the near-bit measuring tool 14.
Further, as shown in FIG. 2, a downhole through-the-earth communication signal transmitter 2 is mounted on completion string 12 during completion and production operations. Specifically, completion string 16 is disposed at an interior end of wellbore 12, and completion packer 17 is disposed at a rear end of completion string 16, and downhole through-the-earth communication signal transmitter 2 is disposed at a front end of completion string 16.
The invention also provides a method for transmitting the underground data of the offshore intelligent well, which comprises the following steps:
1) Before the operation platform starts to operate, installing a suction anchor seabed base station 3 at a seabed mud line position, arranging a signal conversion system in the suction anchor seabed base station 3, simultaneously installing an underwater acoustic communication system on the operation platform, and installing a through-the-earth communication system on a seabed drilling operation pipe column or a well completion pipe column;
2) The through-the-earth communication system transmits downhole drilling monitoring data in real time during drilling operations or monitoring data from sensors in the reservoir to the signal conversion system during completion and production operations;
3) The signal conversion system converts the received underground signal into an underwater sound signal and sends the underwater sound signal to the underwater sound communication system in an underwater sound communication mode;
4) And after the underwater acoustic communication system receives the underwater acoustic signal, data reading and processing are carried out.
The foregoing embodiments are only for illustrating the present invention, wherein the structures, connection modes, manufacturing processes, etc. of the components may be changed, and all equivalent changes and modifications performed on the basis of the technical solutions of the present invention should not be excluded from the protection scope of the present invention.
Claims (6)
1. An offshore intelligent downhole data transmission device, comprising: the system comprises an operation platform arranged at the sea level, an underwater acoustic communication system arranged on the operation platform, a suction anchor seabed base station arranged at the seabed mud line position, a signal conversion system arranged on the suction anchor seabed base station and a through-the-earth communication system arranged on the seabed; the through-the-earth communication system is used for collecting submarine underground signals and transmitting the submarine underground signals to the signal conversion system in a through-the-earth communication mode; the signal conversion system converts the received underground signal in the through-the-earth communication form into an underwater sound signal in the underwater sound communication form and then sends the underwater sound signal to the underwater sound communication system for processing;
the underwater acoustic communication system comprises an underwater acoustic signal receiver antenna, an underwater acoustic signal receiver and an underwater acoustic signal platform processing system; the underwater sound signal receiver antenna is used for receiving the underwater sound signal sent by the signal conversion system; the underwater sound signal receiver is used for sending the underwater sound signal received by the underwater sound signal receiver antenna to the underwater sound signal platform processing system; the underwater acoustic signal platform processing system is used for reading and processing data of the underwater acoustic signal;
the suction anchor submarine base station comprises a sealed cabin and a suction anchor, wherein the signal conversion system is arranged in the sealed cabin; the bottom of the sealed cabin is provided with the suction anchor, and a hole for the through-the-earth communication signal receiving antenna in the signal conversion system to penetrate is reserved at the contact center of the suction anchor and the stratum;
the signal conversion system comprises a through-the-earth communication signal receiver, a through-the-earth communication signal amplifier, a through-the-earth communication signal-to-underwater sound signal converter, an underwater sound signal transmitter and an underwater sound signal transmitter antenna; the through-the-earth communication signal receiver penetrates out of the preformed hole at the bottom of the suction anchor and is used for receiving the underground signal sent by the through-the-earth communication system; the through-the-earth communication signal amplifier is used for amplifying the received underground signal; the communication signal-to-underwater acoustic signal converter is used for converting a downhole signal into an underwater acoustic signal; the underwater sound signal transmitter is used for transmitting the converted underwater sound signal to the underwater sound communication system through an underwater sound signal transmitter antenna; the power supply of the through-the-earth communication signal receiver, the through-the-earth communication signal amplifier, the through-the-earth communication signal-to-underwater sound signal converter, the underwater sound signal transmitter and the underwater sound signal transmitter antenna is supplied by power supply of underwater engineering facilities.
2. An offshore intelligent downhole data transfer device according to claim 1, wherein: the suction anchor is a cylinder with the diameter of 600mm and the length of 1.5 m.
3. An offshore intelligent downhole data transfer device according to claim 1, wherein: the through-the-earth communication system includes a downhole through-the-earth communication signal transmitter for transmitting downhole drilling monitoring data in real time during drilling operations or monitoring data from sensors in the reservoir during completion and production operations.
4. An offshore intelligent downhole data transfer device according to claim 3, wherein: when the drilling operation is carried out, the underground through-the-earth communication signal transmitter is arranged on a drilling operation pipe column, the drilling operation pipe column comprises a drill rod, a near-bit measuring tool and a drill bit are arranged at the tail end of the drill rod, the underground through-the-earth communication signal transmitter is arranged adjacent to the near-bit measuring tool, and a shaft is sleeved outside the drill rod and located below a submarine mud line.
5. An offshore intelligent downhole data transfer device according to claim 3, wherein: when the well completion and production operation are carried out, the underground through-the-earth communication signal transmitter is arranged on the well completion pipe column, the well completion pipe column is arranged in a shaft, the well completion packer is arranged at the rear end of the well completion pipe column, and the underground through-the-earth communication signal transmitter is arranged at the front end of the well completion pipe column.
6. An offshore intelligent well downhole data transmission method, which adopts the offshore intelligent well downhole data transmission device according to any one of claims 1-5, and is characterized by comprising the following steps:
1) Before the operation platform starts to operate, a suction anchor seabed base station is arranged at a seabed mud line position, a signal conversion system is arranged in the suction anchor seabed base station, meanwhile, an underwater sound communication system is arranged on the operation platform, and a through-the-earth communication system is arranged on a seabed drilling operation pipe column or a well completion pipe column;
2) The through-the-earth communication system transmits downhole drilling monitoring data in real time during drilling operations or monitoring data from sensors in the reservoir to the signal conversion system during completion and production operations;
3) The signal conversion system converts the received underground signal into an underwater sound signal and sends the underwater sound signal to the underwater sound communication system in an underwater sound communication mode;
4) And after the underwater acoustic communication system receives the underwater acoustic signal, data reading and processing are carried out.
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| CN202110001798.1A CN112682032B (en) | 2021-01-04 | 2021-01-04 | Offshore intelligent downhole data transmission method and device |
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| CN202110001798.1A CN112682032B (en) | 2021-01-04 | 2021-01-04 | Offshore intelligent downhole data transmission method and device |
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| CN115182402B (en) * | 2022-08-17 | 2024-01-30 | 伟卓石油科技(北京)有限公司 | Submarine rock medium through-the-earth communication device and use method thereof |
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