CN110850476A - Underwater sound positioning and underwater sound detection integrated sensor for ocean seismic node - Google Patents
Underwater sound positioning and underwater sound detection integrated sensor for ocean seismic node Download PDFInfo
- Publication number
- CN110850476A CN110850476A CN201911023777.9A CN201911023777A CN110850476A CN 110850476 A CN110850476 A CN 110850476A CN 201911023777 A CN201911023777 A CN 201911023777A CN 110850476 A CN110850476 A CN 110850476A
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- piezoelectric ceramic
- ceramic tube
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- marine seismic
- detection
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/38—Seismology; Seismic or acoustic prospecting or detecting specially adapted for water-covered areas
- G01V1/3817—Positioning of seismic devices
- G01V1/3835—Positioning of seismic devices measuring position, e.g. by GPS or acoustically
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
- G01V1/18—Receiving elements, e.g. seismometer, geophone or torque detectors, for localised single point measurements
- G01V1/181—Geophones
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
- G01V1/18—Receiving elements, e.g. seismometer, geophone or torque detectors, for localised single point measurements
- G01V1/186—Hydrophones
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/38—Seismology; Seismic or acoustic prospecting or detecting specially adapted for water-covered areas
- G01V1/3808—Seismic data acquisition, e.g. survey design
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/38—Seismology; Seismic or acoustic prospecting or detecting specially adapted for water-covered areas
- G01V1/3843—Deployment of seismic devices, e.g. of streamers
- G01V1/3852—Deployment of seismic devices, e.g. of streamers to the seabed
Abstract
The invention discloses an integral sensor of underwater acoustic positioning and underwater acoustic detection of a marine seismic node, which is fixed on the marine seismic node and comprises: the acoustic piezoelectric ceramic tube, the isolation layer and the detection piezoelectric ceramic tube; the acoustic piezoelectric ceramic tube is connected with a transponder circuit fixed on a marine seismic node and used for receiving a calling sound wave signal, converting the calling sound wave signal into a calling electric signal and sending the calling electric signal to the transponder circuit; receiving a response electric signal sent by the transponder circuit, converting the response electric signal into a response sound wave signal and then sending the response sound wave signal; the detection piezoelectric ceramic tube is connected with an acquisition circuit on a marine earthquake node and used for acquiring earthquake signals and sending the earthquake signals to the acquisition circuit; the isolation layer is positioned between the acoustic piezoelectric ceramic tube and the detection piezoelectric ceramic tube and used for isolating the acoustic piezoelectric ceramic tube from the detection piezoelectric ceramic tube. The invention can simplify the structure of the marine seismic node and improve the efficiency of construction operation.
Description
Technical Field
The invention relates to the technical field of marine geophysical exploration, in particular to an underwater acoustic positioning and underwater acoustic detection integrated sensor for a marine seismic node.
Background
In recent years, marine oil and gas resources are gradually the focus of international energy competition, and offshore oil and gas exploration is also a research hotspot in the technical field of oil and gas exploration. OBN (ocean Bottom node) marine seismic node equipment is becoming the mainstream acquisition equipment for offshore oil and gas exploration. The operation method of the equipment comprises the steps of putting the marine seismic nodes on the seabed to collect data, recovering the marine seismic nodes after collection and downloading the data.
A piezoelectric detector is installed in a full-sealing structure of a traditional marine seismic node to detect underwater acoustic signals of seabed vibration, and meanwhile, a transponder is hung on a deck of a ship manually when the marine seismic node is launched, and the transponder needs an independent sealing structure. A main control computer on the ship transmits an inquiry signal in a certain time period through a underwater acoustic transducer, a transponder mounted on a marine seismic node receives the inquiry signal and then transmits a response signal back, and the main control computer accurately positions the geodetic coordinates of the marine seismic node at the water bottom according to the inquiry signal and the response signal. However, the method of externally hanging the transponder on the deck of the ship is low in efficiency during construction operation and has potential safety hazards.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides an underwater acoustic positioning and underwater acoustic detection integrated sensor for a marine seismic node, which is used for simplifying the structure of the marine seismic node and improving the efficiency of construction operation, and the sensor is fixed on the marine seismic node and comprises the following components: the acoustic piezoelectric ceramic tube, the isolation layer and the detection piezoelectric ceramic tube;
the acoustic piezoelectric ceramic tube is connected with a transponder circuit fixed on a marine seismic node and used for receiving a calling sound wave signal, converting the calling sound wave signal into a calling electric signal and sending the calling electric signal to the transponder circuit; receiving a response electric signal sent by the transponder circuit, converting the response electric signal into a response sound wave signal and then sending the response sound wave signal;
the detection piezoelectric ceramic tube is connected with the acquisition circuit on the marine earthquake node and used for acquiring earthquake signals and sending the earthquake signals to the acquisition circuit;
and the isolation layer is positioned between the acoustic piezoelectric ceramic tube and the detection piezoelectric ceramic tube and is used for isolating the acoustic piezoelectric ceramic tube from the detection piezoelectric ceramic tube.
The embodiment of the invention comprises the following steps: the acoustic piezoelectric ceramic tube converts the calling sound wave signal into a calling electric signal and sends the calling electric signal to the responder circuit, and the response electric signal sent by the responder circuit is converted into a response sound wave signal and then sent, so that the signal conversion in the marine seismic node positioning process can be realized; the demodulation piezoelectric ceramic tube can accurately acquire seismic signals; the acoustic piezoelectric ceramic tube and the detection piezoelectric ceramic tube are integrated in one device, the size is small, and the acoustic piezoelectric ceramic tube and the detection piezoelectric ceramic tube can work simultaneously on the basis of simplifying the structure of a marine earthquake node; the isolation layer isolates the acoustic piezoelectric ceramic tube from the wave detection piezoelectric ceramic tube, so that the acoustic piezoelectric ceramic tube and the wave detection piezoelectric ceramic tube can be ensured not to interfere with each other, and the efficiency of marine seismic node construction operation can be improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts. In the drawings:
FIG. 1 is a schematic diagram of an integrated sensor architecture for underwater acoustic positioning and detection of a marine seismic node in an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides an underwater acoustic positioning and underwater acoustic detection integrated sensor for a marine seismic node, which is used for simplifying the structure of the marine seismic node and improving the efficiency of construction operation, and the sensor is fixed on the marine seismic node and comprises the following components: the acoustic piezoelectric ceramic tube 01, the isolation layer 02 and the detection piezoelectric ceramic tube 03;
the acoustic piezoelectric ceramic tube 01 is connected with a transponder circuit fixed on a marine seismic node, and is used for receiving a calling sound wave signal, converting the calling sound wave signal into a calling electric signal and sending the calling electric signal to the transponder circuit; receiving a response electric signal sent by the transponder circuit, converting the response electric signal into a response sound wave signal and then sending the response sound wave signal;
the wave detection piezoelectric ceramic tube 03 is connected with an acquisition circuit on a marine seismic node, and is used for acquiring seismic signals and sending the seismic signals to the acquisition circuit;
and the isolation layer 02 is positioned between the acoustic piezoelectric ceramic tube 01 and the detection piezoelectric ceramic tube 03 and is used for isolating the acoustic piezoelectric ceramic tube 01 from the detection piezoelectric ceramic tube 02.
As shown in fig. 1, the present invention is achieved by: the acoustic piezoelectric ceramic tube converts the calling sound wave signal into a calling electric signal and sends the calling electric signal to the responder circuit, and the response electric signal sent by the responder circuit is converted into a response sound wave signal and then sent, so that the signal conversion in the marine seismic node positioning process can be realized; the demodulation piezoelectric ceramic tube can accurately acquire seismic signals; the acoustic piezoelectric ceramic tube and the detection piezoelectric ceramic tube are integrated in one device, the size is small, and the acoustic piezoelectric ceramic tube and the detection piezoelectric ceramic tube can work simultaneously on the basis of simplifying the structure of a marine earthquake node; the isolation layer isolates the acoustic piezoelectric ceramic tube from the wave detection piezoelectric ceramic tube, so that the acoustic piezoelectric ceramic tube and the wave detection piezoelectric ceramic tube can be ensured not to interfere with each other, and the efficiency of marine seismic node construction operation can be improved.
In specific implementation, the acoustic piezoelectric ceramic tube 01 is connected with a responder fixed on a marine seismic node and used for receiving a calling sound wave signal, converting the calling sound wave signal into a calling electric signal and sending the calling electric signal to a responder circuit; and receiving the response electric signal sent by the transponder, converting the response electric signal into a response sound wave signal, and sending the response sound wave signal.
The marine seismic nodes are laid on the seabed for data acquisition and are influenced by ocean currents, ship speeds and the like, the positions of the marine seismic nodes on the seabed are difficult to be the same as the preset throwing positions, the data acquisition precision can be seriously influenced, and therefore the marine seismic nodes need to be accurately positioned. The ship is provided with a main control computer and GPS positioning equipment, the distance between the main control computer and the marine seismic node can be determined by sonar signals obtained by sonar communication between the main control computer and the transponder fixed on the marine seismic node, and the ship coordinate acquired by the GPS positioning equipment is combined to further determine the underwater coordinate of the marine seismic node.
The acoustic piezoelectric ceramic tube 01 can adopt a piezoelectric ceramic tube, is connected with a transponder fixed on a marine earthquake node, can receive a calling sound wave signal sent by a main control computer on a ship, converts the calling sound wave signal into a calling electric signal, and sends the calling electric signal to the transponder, the frequency of the acoustic piezoelectric ceramic tube 01 for receiving the calling sound wave signal can be 38 kHz-48 kHz, the receiving sensitivity in a receiving frequency band range is more than-205 dB/V, and the receiving attenuation fluctuation is less than +/-1 dB. The acoustic piezoelectric ceramic tube 01 can also receive a response electric signal sent by the transponder, convert the response electric signal into a response sound wave signal and send the response sound wave signal to a main control computer on the ship, the frequency of the response sound wave signal sent by the acoustic piezoelectric ceramic tube 01 can be 32 kHz-37 kHz, the emission response in a transmission frequency band is not lower than 135dB, the emission attenuation is less than 3dB, the received signal is horizontal and nondirectional, the transmitted signal is nondirectional within 180 degrees of a vertical plane, and the acoustic piezoelectric ceramic tube can normally work in the water depth of 500m and the temperature range of-5 ℃ to +70 ℃. The acoustic piezoelectric ceramic tube 01 is arranged on the outermost side of the whole sensor, so that the emitted response sound wave signals can be ensured not to be shielded.
In specific implementation, the wave detection piezoelectric ceramic tube 03 is connected with an acquisition circuit on a marine seismic node, and is used for acquiring seismic signals and sending the seismic signals to the acquisition circuit.
The detection piezoelectric ceramic tube 03 adopts a low-frequency and high-sensitivity piezoelectric ceramic tube, has good receiving performance in a wide frequency band of 3 Hz-10 kHz, can be assembled on a marine earthquake node to perform various deep sea sound wave detection and marine oil exploration, has voltage sensitivity of-201.00 dB (ref: 1V/mu Pa), is less than or equal to +/-1.5 dB along with frequency change and less than or equal to 1.5dB along with depth change, has no directivity of a received signal level, has no directivity in a 180-degree range of a vertical plane of a transmitted signal, and can normally work in a water depth of 1000m and a temperature range of-5 ℃ to +70 ℃.
In a specific implementation, the isolation layer 02 is located between the acoustic piezoelectric ceramic tube 01 and the detection piezoelectric ceramic tube 03, and is used for isolating the acoustic piezoelectric ceramic tube 01 from the detection piezoelectric ceramic tube 02.
The isolation layer 02 can be made of a soft elastic material, and when the acoustic piezoelectric ceramic tube 01 emits a response sound wave signal, the isolation layer 02 can isolate the interference of the response sound wave signal on the detection piezoelectric ceramic tube 02 caused by collecting a seismic signal.
In one embodiment, the integrated sensor for underwater acoustic positioning and detection of marine seismic nodes may further comprise: and a transformer 04 for adjusting the output impedance of the acoustic piezoelectric ceramic tube 01.
In specific implementation, the transformer 04 mainly functions as a varistor, the transformer 04 is connected in series with the acoustic piezoelectric ceramic tube 01 to perform impedance matching and improve the power of signal transmission, and the transformation ratio of the transformer 04 can be 1: 10.
in one embodiment, the integrated sensor for underwater acoustic positioning and detection of marine seismic nodes may further comprise: an input signal line 07 is positioned for connecting the acoustic piezoelectric ceramic tube 01 with the input of the transformer 04.
In one embodiment, the integrated sensor for underwater acoustic positioning and detection of marine seismic nodes may further comprise: an output signal line 08 is positioned for connecting the output of the transformer 04 to the transponder.
In specific implementation, one end of the positioning input signal line 07 is connected with the secondary input end of the transformer 04, the secondary output end of the transformer 04 is connected with a conducting wire to be used as the anode of the positioning output signal line 08, and the other end of the positioning input signal line 07 is used as the cathode of the positioning output signal line 08. The positioning input signal line 07 can be welded at the mirror image position of the wall of the acoustic piezoelectric ceramic tube 01, the calling electric signal output by the acoustic piezoelectric ceramic tube 01 is transmitted to the secondary input end of the transformer 04, the transformer 04 performs resistance change on the calling electric signal, and the positioning output signal line 08 transmits the calling electric signal subjected to resistance change to the responder on the marine seismic node. The positioning output signal line 08 can also receive a response electric signal sent by the transponder, the response electric signal is transmitted to the transformer 04, the transformer 04 performs resistance change on the response electric signal, and the positioning input signal line 07 transmits the response electric signal subjected to resistance change to the acoustic piezoelectric ceramic tube 01.
In one embodiment, the integrated sensor for underwater acoustic positioning and detection of marine seismic nodes may further comprise: and the detection output signal wire 09 is used for connecting the detection piezoelectric ceramic tube 03 with the acquisition circuit.
In specific implementation, the demodulation output signal line 09 is connected with the demodulation piezoelectric ceramic tube 03 and the acquisition circuit on the marine seismic node, the positioning input signal line 09 can be welded at the mirror image position of the tube wall of the demodulation piezoelectric ceramic tube 03, and the voltage signal output by the demodulation piezoelectric ceramic tube 03 is transmitted to the acquisition circuit.
In one embodiment, the integrated sensor for underwater acoustic positioning and detection of marine seismic nodes may further comprise: and the sealing layer 05 is used for sealing the acoustic piezoelectric ceramic tube 01, the isolation layer 02 and the detection piezoelectric ceramic tube 03.
In one embodiment, the material of the sealing layer 05 comprises urethane rubber.
In specific implementation, as shown in fig. 1, the sealing layer 05 is located between the detection piezoelectric ceramic tube 03 and the transformer 04, and is filled with polyurethane rubber, so that the acoustic piezoelectric ceramic tube 01, the isolation layer 02 and the detection piezoelectric ceramic tube 03 can be sealed, the acoustic piezoelectric ceramic tube 01 and the detection piezoelectric ceramic tube 03 are watertight and acoustically transparent, and the accuracy of signal acquisition is improved.
In one embodiment, the acoustic piezoelectric ceramic tube 01 is near the bottom of the sealing layer 05.
In specific implementation, the acoustic piezoelectric ceramic tube 01 is arranged at a position close to the bottom of the sealing layer 05, so that the acoustic piezoelectric ceramic tube 01 is not shielded when transmitting a response sound wave signal.
In one embodiment, the integrated sensor for underwater acoustic positioning and detection of marine seismic nodes may further comprise: the top of the watertight frame 06 is connected with the marine seismic node, and the bottom of the watertight frame 06 is connected with the top of the sealing layer 05.
In one embodiment, the material of the watertight frame 06 comprises an injection moulded material.
During specific implementation, the watertight frame 06 can be made of injection molding materials, the top of the watertight frame 06 is connected with the marine seismic node, the bottom of the watertight frame 06 is connected with the top of the sealing layer 05, polyurethane rubber can be adopted for pouring, and watertight and sound transmission of the sensor are achieved.
In summary, the present invention provides: the acoustic piezoelectric ceramic tube converts the calling sound wave signal into a calling electric signal and sends the calling electric signal to the responder circuit, and the response electric signal sent by the responder circuit is converted into a response sound wave signal and then sent, so that the signal conversion in the marine seismic node positioning process can be realized; the demodulation piezoelectric ceramic tube can accurately acquire seismic signals; the acoustic piezoelectric ceramic tube and the detection piezoelectric ceramic tube are integrated in one device, the size is small, and the acoustic piezoelectric ceramic tube and the detection piezoelectric ceramic tube can work simultaneously on the basis of simplifying the structure of a marine earthquake node; the invention can improve the efficiency of construction operation of marine seismic nodes, and is suitable for a plurality of exploration fields such as acoustic positioning of marine seismic nodes, underwater signal detection, positioning and maintenance of oil and gas pipelines, underwater robot navigation, underwater construction monitoring and positioning, measurement of underwater weapon tracks, torpedo submarine track investigation and the like.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, 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 (10)
1. An integrated sensor for acoustic positioning and detection of a marine seismic node, said sensor being fixed to the marine seismic node, comprising: the acoustic piezoelectric ceramic tube, the isolation layer and the detection piezoelectric ceramic tube;
the acoustic piezoelectric ceramic tube is connected with a transponder circuit fixed on a marine seismic node and used for receiving a calling sound wave signal, converting the calling sound wave signal into a calling electric signal and sending the calling electric signal to the transponder circuit; receiving a response electric signal sent by the transponder circuit, converting the response electric signal into a response sound wave signal and then sending the response sound wave signal;
the wave detection piezoelectric ceramic tube is connected with an acquisition circuit on a marine seismic node and used for acquiring seismic signals and sending the seismic signals to the acquisition circuit;
the isolation layer is located between the acoustic piezoelectric ceramic tube and the detection piezoelectric ceramic tube and used for isolating the acoustic piezoelectric ceramic tube from the detection piezoelectric ceramic tube.
2. The integrated sensor of claim 1 for underwater acoustic positioning and detection of marine seismic nodes, further comprising: and the transformer is used for adjusting the output impedance of the acoustic piezoelectric ceramic tube.
3. The integrated sensor for hydroacoustic positioning and hydroacoustic demodulation of a marine seismic node of claim 2, wherein the sensor further comprises: and the positioning input signal wire is used for connecting the acoustic piezoelectric ceramic tube and the input end of the transformer.
4. The integrated sensor for hydroacoustic positioning and hydroacoustic demodulation of a marine seismic node of claim 2, wherein the sensor further comprises: and the positioning output signal wire is used for connecting the output end of the transformer with the transponder circuit.
5. The integrated sensor of claim 1 for underwater acoustic positioning and detection of marine seismic nodes, further comprising: and the detection output signal wire is used for connecting the detection piezoelectric ceramic tube and the acquisition circuit.
6. The integrated sensor of claim 1 for underwater acoustic positioning and detection of marine seismic nodes, further comprising: and the sealing layer is used for sealing the acoustic piezoelectric ceramic tube, the isolation layer and the detection piezoelectric ceramic tube.
7. The integrated sensor of claim 6, wherein the material of the sealing layer comprises urethane rubber.
8. The integrated marine seismic node hydroacoustic positioning and hydroacoustic rectification sensor of claim 6 wherein said acoustic piezo ceramic tube is proximate a bottom of said seal.
9. The integrated sensor of claim 6, further comprising: a watertight frame, a top of the watertight frame connected with the marine seismic node, a bottom of the watertight frame connected with a top of the sealing layer.
10. The integrated marine seismic node hydroacoustic positioning and hydroacoustic rectification sensor of claim 9 wherein the material of said watertight frame comprises an injection molded material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911023777.9A CN110850476A (en) | 2019-10-25 | 2019-10-25 | Underwater sound positioning and underwater sound detection integrated sensor for ocean seismic node |
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| CN201911023777.9A CN110850476A (en) | 2019-10-25 | 2019-10-25 | Underwater sound positioning and underwater sound detection integrated sensor for ocean seismic node |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112462430A (en) * | 2020-10-26 | 2021-03-09 | 中国石油天然气集团有限公司 | Working state acquisition system of submarine seismic node acquisition station and working method thereof |
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