CN212965448U - Double-detection multi-channel marine seismic data receiving system - Google Patents

Abstract

The utility model provides a double-detection multi-channel marine seismic data receiving system, which comprises a seismic cable with a plurality of seismic channels and a seismic data recording system; the seismic traces are divided into at least two categories: actually, carrying out: the detector is arranged in the land detection real road, and comprises a water detection real road and a land detection real road, wherein the water detection real road is only provided with the water detection detector, and the land detection real road is only provided with the land detection detector; and (4) dummy road: the inside is not provided with a detector; the data recording system includes: seismic cable communication interface unit: carrying out data communication with the water detection real channel and the land detection real channel of the seismic cable; a data reconstruction server: communicating with a seismic cable communication interface unit; the master control server: and the communication interface unit is communicated with the seismic cable communication interface unit and is used for sending working parameter information to the seismic cable. The track spacing is reduced through the design of real tracks and dummy tracks; through the processing of water detection data and land detection data, the influence of earthquake ghost waves can be inhibited, the frequency band of earthquake signals is widened, and the resolution ratio of the earthquake data is improved.

Description

Double-detection multi-channel marine seismic data receiving system

Technical Field

The utility model relates to a marine seismic exploration technical field, concretely relates to two multichannel marine seismic data receiving system of examining.

Background

The marine multi-channel seismic exploration system mainly comprises a seismic source and a seismic signal receiving system, and an auxiliary navigation positioning system is required. The seismic source may be an air gun source, a spark source, a bomer source, or the like. The seismic signal receiving system comprises two parts, namely a marine multichannel seismic streamer and a multichannel seismic data recording system. During marine seismic operation, one or more multi-channel seismic streamers are towed in the sea water at the tail of a seismic survey ship, and the streamers are distributed in parallel along the sea surface. The multiple seismic streamers are towed to receive seismic reflection signals, convert acoustic signals of the seismic reflection signals into digital signals and transmit the digital signals to a multiple seismic data recording system. The multi-channel seismic data recording system receives multi-channel seismic data and displays a seismic multi-channel waveform and a channel drawing section in real time, and a user sets construction parameters such as sampling intervals, sampling points and the like of the marine multi-channel seismic streamer through the multi-channel seismic data recording system.

Marine seismic exploration generally involves the placement of seismic sources and streamers to a depth below the sea surface, and since the sea-air interface is a strong wave impedance interface, strong sea-surface reflections can limit the bandwidth of the useful signal and obscure the final image. This sea surface reflection is called ghost. The patent documents EP2626726a2, CN107167837A and the like disclose a water and land dual-detection seismic acquisition system, and detectors used in a multi-channel seismic streamer integrate water detection and land detection, so as to achieve the effect of inhibiting ghost waves. However, the existing amphibious inspection towing cables need to use integrated special land and water geophone dense arrays, so that the land and water dual inspection seismic system is complex in technology, poor in stability and high in manufacturing cost.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a marine seismic data collection system that stability is high, resolution ratio is high.

In order to achieve the above object, some embodiments of the present invention provide the following technical solutions:

a double-detection multi-channel marine seismic data receiving system comprises a seismic cable with a plurality of seismic channels and a seismic data recording system;

the seismic traces are divided into at least two categories:

actually, carrying out: the detector is arranged in the land detection real road, and comprises a water detection real road and a land detection real road, wherein the water detection real road is only provided with the water detection detector, and the land detection real road is only provided with the land detection detector;

and (4) dummy road: the inside is not provided with a detector;

the data recording system includes:

seismic cable communication interface unit: carrying out data communication with the water detection actual channel and the land detection actual channel of the seismic cable so as to acquire sparse hydrophobic detection seismic data and sparse land detection seismic data;

a data reconstruction server: communicating with the seismic cable communication interface unit for reconstruction of sparse water detection seismic data and sparse land detection seismic data;

the master control server: and the communication interface unit is communicated with the seismic cable communication interface unit and is used for sending working parameter information to the seismic cable.

In some embodiments of the present invention, the seismic traces are configured in the following manner: the method comprises the steps of randomly grouping seismic channels, wherein each group at least comprises 3 seismic channels, randomly configuring the seismic channels in the group into real channels and dummy channels, and at least comprising two real channels, and further randomly configuring the real channels into water detection real channels and land detection real channels.

The utility model discloses in some embodiments, the mute is said and is provided with attitude sensor, seismic cable communication interface unit further carries out data communication with mute, gathers attitude sensor's sensing data.

In some embodiments of the present invention, the data reconstruction server is further configured to: and performing data correction on the sparse land detection demodulation data based on the seismic cable attitude data fed back by the attitude sensor.

In some embodiments of the present invention, the seismic cable comprises a front damping section, a working section and a rear damping section in sequence along a length direction, wherein the working section comprises a plurality of working sections;

the seismic cable also comprises data transmission packages which are arranged between the tail of the whole working section and each working subsection at intervals and are used for data acquisition of the working subsections; and the data acquisition unit is in data communication with the data transmission packet.

In some embodiments of the present invention, the seismic cable further comprises a digital packet disposed in the working subsegment between the seismic channels, for collecting data of real channels and dummy channels, and transmitting the data to the data transmission packet.

In some embodiments of the present invention, the data recording system further comprises a quality control client for analyzing and displaying the sampled seismic data and the reconstructed seismic data.

In some embodiments of the present invention, the data recording system further comprises a switch, the data reconstruction server, the main control server and the quality control client communicate with the seismic cable communication interface unit through the switch.

In some embodiments of the present invention, if a plurality of water detectors are disposed in the water detection channel, the plurality of water detectors are connected in series or in parallel; if a plurality of land detection detectors are arranged in the land detection actual road, the land detection detectors are connected in series or in parallel.

In some embodiments of the present invention, the working section includes in order from inside to outside along the radial direction: the seismic channel comprises a cable core, wherein the cable core sequentially comprises from inside to outside along the radial direction: the cable comprises an electric power transmission cable, an inner shielding layer, an aramid fiber bearing layer, a signal transmission cable, an outer shielding layer and an external application protective layer.

Compared with the prior art, the utility model discloses technical scheme's beneficial effect lies in:

the seismic cable is improved into a double-detection multi-channel seismic system, a water detection wave detector channel, a land detection wave detector channel and a dummy channel are respectively arranged in the seismic channel, and a wave detector is not arranged in the dummy channel, so that the seismic acquisition channel distance is compressed, dummy channel data can be reconstructed by a data reconstruction method, the transverse resolution of seismic acquisition data is improved, the influence of seismic ghost waves can be inhibited, the seismic signal frequency band is widened, and the seismic data resolution is improved.

The utility model discloses need not use complicated integrated land and water detector, only need use independent water to examine and independent land is examined. The stability of the system is improved. Compared with the conventional multi-component marine multi-channel seismic streamer, the utility model discloses reduce the use amount of the detector more than 2/3, reduce the hardware cost of multi-component marine multi-channel seismic streamer.

The utility model discloses two survey seismic streamer, the equal sparse arrangement is examined with water in land survey, and the seismic data volume of production descends more than 2/3, under the same data transmission bandwidth condition, the utility model discloses a tow-cable channel number can be more than 1 times than traditional tow-cable extension, has improved the passageway extending capability of tow-cable.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

FIG. 1 is a schematic structural diagram of a marine seismic data receiving system according to the present invention;

FIG. 2 is a schematic diagram of a seismic cable configuration;

FIG. 3 is a schematic diagram of a seismic cable work section configuration;

FIG. 4 is a schematic diagram of a cable core structure;

FIG. 5a shows a sparse layout of water detection in a dual detection multi-channel seismic streamer of the present invention;

FIG. 5b shows a sparse layout of land tests in a dual test multi-channel seismic streamer of the present invention;

FIG. 5c is a view showing the arrangement of geophones in the dual-inspection multi-channel seismic streamer of the present invention in a sparse combination of land and water components;

FIG. 6 is a block diagram of a multi-channel seismic data receiving system;

FIG. 7a is a schematic diagram of the water detection real road structure after sparse reconstruction of the seismic data for water detection of the present invention;

FIG. 7b is a schematic diagram of a land detection real road structure after sparse reconstruction of land detection seismic data according to the present invention;

FIG. 7c is a schematic diagram of the real channel structure of the reconstructed seismic channel of the present invention;

FIG. 8a is a flow chart of the operation of the data receiving system;

FIG. 8b is a flowchart illustrating operation of one embodiment of a data receiving system;

1-a plurality of seismic cables, 101-a raw water detection channel, 102-a newly-built water detection channel, 103-a raw land detection channel and 104-a newly-built land detection channel;

2-leading section; 3-a front shock absorbing section; 4-rear shock absorption section; 5-tail cable; 6-tail ring;

7-the working subsegment; 701-seismic trace; 702-digital packets; 703-a cable core; 7301-electric power transmission cable; 7302-an inner shield layer; 7303-aramid fiber bearing layer; 7304-signal transmission cable; 7305-outer shield layer; 7306 applying a protective layer; 704-a buoyant filling;

8-data transmission packet;

901-water detector, 902-land detector.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

It should be noted that the terms "connected," "communicating," and the like may refer to either direct connection or direct communication between components, or indirect connection or indirect communication between components.

The utility model provides a marine seismic data receiving system for marine seismic data's collection and processing. The system can be used for reconstructing marine seismic data for application in the fields of resource exploration and the like.

The marine seismic data receiving system is realized based on a seismic cable, and the seismic cable is arranged in the sea in a ship dragging mode to acquire real-time data.

The seismic cable is structurally divided into a front damping section 2, a front damping section 3, a working section and a rear damping section 4, and the structure refers to fig. 2 to 4. Besides, the data transmission package 8, the tail cable 5 and the tail ring 6 are included, and the structure is shown in fig. 2. The front segment 2 is used for towing the towline for work and signal transmission; the front damping section 3 is used for reducing vibration of the ship body to the towing cable and reducing noise; the rear shock absorption section 4 is used for balancing the towing cable and reducing the swing of the towing cable; the working section is the main body of a multi-channel seismic streamer and is composed of a plurality of working subsections 7, and mainly comprises seismic channels 701, a digital packet 702, cable cores 703 and buoyancy fillers 704. The cable core is shown in fig. 4 and comprises a power transmission cable 7301, an inner shielding layer 7302, an aramid fiber bearing layer 7303, a signal transmission cable 7304, an outer shielding layer 7305 and an external protection layer 7306. The aramid fiber bearing layer 7303 is woven by aramid fibers, bears the tension of a towing cable in marine operation and protects the power transmission cable, the signal transmission cable and the like from being damaged by stress; the signal transmission cable 7304 is responsible for transmitting hydrophone signals and signals of control commands and states of equipment at the tail of the streamer, and can be a metal cable or an optical fiber; an inner shield layer 7302 for shielding external electromagnetic interference; the external protective layer 7306 is a waterproof wear-resistant material coating layer for protecting the cable core from external force damage, and the waterproof wear-resistant material coating layer may be a polyether polyurethane thermoplastic elastomer and may contain filler additives such as an ultraviolet absorbent and dibutyl phthalate. The power transmission cable 7301 is divided into two pairs of cables, one pair of twisted pair cables supplies power to the data transmission package, and the other pair of twisted pair cables supplies power to the tail device (tail device of the towing cable, including electric spark source, plasma source, electromechanical vibrator, electric marine vibrator, electromagnetic source, piezoelectric source, magnetostrictive source, etc.); the buoyancy filling material is solid flexible buoyancy filling material which provides buoyancy for the towing cable and configures the towing cable to be near zero buoyancy, and the solid flexible buoyancy filling material is hinge low-pressure high-density polyethylene (HDPE) and can contain filling material auxiliaries such as ultraviolet absorbers and defoaming agents.

The data receiving system includes a seismic cable having a plurality of seismic traces and a seismic data recording system, and is structurally referred to in fig. 1. The utility model provides a double-detection multi-channel marine seismic data receiving system, which comprises a seismic cable with a plurality of seismic channels and a seismic data recording system;

the seismic traces are divided into at least two categories:

actually, carrying out: the detector is arranged in the land detection real road, and comprises a water detection real road and a land detection real road, wherein the water detection detector is arranged in the water detection real road, and the land detection detector is arranged in the land detection real road; namely, only one type of detector can be installed in each real channel, and a mode of mixing two detectors cannot be adopted; the purpose of this design is: the method is expected to collect one type of seismic signals through one real channel, avoid aliasing of different types of signals generated in the same real channel and increase the processing difficulty of the seismic signals; the working section of the seismic cable is a main body of a plurality of seismic cables, and the geophones are all arranged at the working section;

and (4) dummy road: the inside is not provided with a detector;

the data recording system includes:

seismic cable communication interface unit: carrying out data communication with the water detection actual channel and the land detection actual channel of the seismic cable so as to acquire sparse hydrophobic detection seismic data and sparse land detection seismic data; the data reconstruction unit is realized based on the data reconstruction server II, reconstructs the sparse sampling water detection seismic data fed back by the water detection detectors into uniform sampling water detection seismic files, and reconstructs the sparse sampling land detection seismic data fed back by the land detection detectors into uniform sampling land detection seismic files; the seismic file obtained after reconstruction is basically consistent with the file acquired by using the conventional land and water multi-component seismic streamer; the commonly used reconstruction algorithms mainly include three types, namely a convex optimization algorithm, a greedy algorithm, a combination algorithm and the like; and combining the processed uniform sampling water detection seismic file and land detection seismic file, suppressing ghost waves and ringing, and improving the seismic data imaging effect. Taking the merged file as a seismic file obtained by detection;

the master control server: the communication interface unit is communicated with the seismic cable and is used for sending working parameter information to the seismic cable; and the data uploaded by the communication interface is decompressed, arranged and recorded.

The utility model discloses a wave detector way sparse arrangement scheme, when guaranteeing the accurate nature of data, compressed the way interval, reduced the use amount of equipment, and then have outstanding economic value and practical value.

In some embodiments of the present invention, in a single real channel, the water detector may adopt a pressure sensor, also called a hydrophone, for collecting a water pressure change signal caused by seismic waves, and a scalar is measured; the land detector can adopt a speed sensor or an acceleration sensor, and measures vibration signals of mass points caused by seismic waves, wherein the vibration of the mass points comprises components in the x direction, the y direction and the z direction, the component in the z direction is required to be measured, and the other two components can be selected to be measured or not according to requirements.

In some embodiments of the present invention, 1 or more detectors may be optionally configured in each real channel. If a plurality of detectors are arranged in the same real channel, the detectors are the same type of detectors (water detection or land detection), and the detectors in the uniform real channel are connected in series or in parallel.

The utility model discloses some embodiments, based on signal sparse reconsitution theory, carry out the random arrangement based on compressed sensing to the seismic channel in the working section, can adopt random arrangement methods such as Jittered sampling, LDPC matrix sampling, grouping random sampling. Specifically, the seismic traces are configured in the following manner: the method comprises the steps of randomly grouping the seismic channels, wherein each group at least comprises 3 seismic channels, randomly configuring the seismic channels in the group into real channels and dummy channels, and at least comprising two real channels so as to ensure that real channels can be detected by water and real channels are detected by land in each group of seismic channels, and further randomly configuring the real channels into real channels detected by water and real channels detected by land.

Specifically, in some embodiments: the distance between every 3 seismic channels is a group, and 1 seismic channel is randomly selected from each group and is distributed with 1 water detection seismic channel (refer to fig. 5 a). Subsequently, 1 land survey seismic trace (refer to fig. 5b) is randomly extracted from the remaining two traces of each group, and the remaining last 1 trace is a dummy trace. Since the positions of the water tests are randomly arranged based on the compressed sensing theory, the rest positions (positions for arranging the land tests) are also randomly arranged based on the compressed sensing theory. Namely, the arrangement of water detection and land detection meets the requirement of compressed sensing sparse arrangement. After completion of the seismic trace placement, each group includes 3 traces, two real traces and 1 dummy trace (see fig. 5 c).

The utility model discloses in some embodiments, the mute is said and is provided with attitude sensor, attitude sensor's sensing data is further gathered to the data acquisition unit. The attitude sensor is used for measuring data such as the rotation amount or the torsion amount of the towing cable, can assist in correcting the data of the land detection detector, and improves the accuracy of the land detection data.

In some embodiments of the present invention, the data reconstruction unit is further configured to: and performing data correction on the sparse land detection demodulation data based on the seismic cable attitude data fed back by the attitude sensor.

In some embodiments of the present invention, the data acquisition unit is further configured to acquire the culled shot gather data of the dummy track, and the data reconstruction unit is further configured to: and carrying out data reconstruction on the dummy road data, and combining the uniform sampling water detection seismic file, the land detection seismic file and the dummy road reconstruction data to obtain seismic data. In the seismic operation, the reconstructed shot gather data is high-density small-track-pitch multi-channel seismic data for recording and subsequent processing and explanation, and the transverse resolution of the submarine stratum in the seismic exploration operation can be improved by times.

Referring to fig. 3, in order to realize the acquisition of the seismic cable data, a digital packet and a digital transmission packet are further provided.

The seismic cable sequentially comprises a front guide section, a front damping section, a working section and a rear damping section along the length direction, wherein the working section comprises a plurality of working subsections; the data transmission packets are arranged between the end of the whole working section and each working subsection at intervals and are used for data acquisition of the working subsections; and the data acquisition unit is in data communication with the data transmission packet.

The data transmission package comprises one or more FPGA chips and SerDes chips and is responsible for collecting, arranging, compressing, packaging and uploading arriving digital packet data step by step, and finally arriving at a multi-channel seismic data recording system. The data transmission packet is simultaneously used as a relay of a power supply, and the power supply provided by the survey ship is transmitted backwards step by step; and meanwhile, as a mechanical connecting assembly, connecting the functional sections of the adjacent multi-channel towing cables.

And the digital packet comprises 1 or more analog-to-digital conversion chips and a microcontroller chip, is arranged in the working subsections and between the real channels and the dummy channels, and is responsible for collecting seismic channel data and transmitting the seismic channel data to the data transmission packet. In this embodiment, each digital packet is responsible for 8 seismic traces, including real seismic traces and dummy seismic traces.

The utility model discloses some embodiments can also carry out analysis and demonstration through the quality control client to sparse sampling double-detection seismic data, the double-detection seismic data after the reconsitution to the staff consults.

In some embodiments of the present invention, the data recording system is illustrated in a hardware configuration with reference to fig. 6.

The data acquisition unit is realized based on a towing cable control unit interface, the data reconstruction unit is realized based on a reconstruction server, and the quality control client is realized based on a quality control server; in the above, the main control server, the reconstruction server and the quality control server are all in communication with the streamer control unit interface to perform data communication with the seismic cable. The data reconstruction server and the main control server are relatively independent, and the process of data reconstruction does not influence the receiving of seismic signals by the multiple seismic streamers and the work of units such as the main control server. Further, the main control server, the reconstruction server and the quality control client side are in data communication with the data interface unit through the switch.

In some embodiments of the present invention, there is further provided a marine seismic data processing method, which is implemented based on the above-mentioned double-detection multi-channel marine seismic data receiving system, and includes the following steps, with reference to fig. 8b for the flow chart:

in the preparation stage, a user configures operation parameters such as a seismic source excitation interval, a recording length and the like through a master control server; the main control server sends the user configuration parameters to a plurality of towlines through a towline control interface unit and enters a seismic operation acquisition mode;

after the offshore operation starts, the data acquisition system records sparse sampling water detection signals and sparse sampling land detection signals;

reconstructing the sparse sampling water detection wave signal into an even sampling water detection wave seismic file, wherein the commonly used reconstruction algorithms mainly comprise three types, namely a convex optimization algorithm, a greedy algorithm, a combination algorithm and the like;

reconstructing the sparse sampling land detection demodulation signals into uniform sampling land detection demodulation seismic files, wherein the commonly used reconstruction algorithms mainly comprise three types, namely a convex optimization algorithm, a greedy algorithm, a combination algorithm and the like;

and merging the water detection wave detection signal and the land detection wave detection signal based on uniform sampling into an amphibious detection seismic file.

Referring to fig. 7a to 7c, a water detection channel 102 and a land detection channel 104 are newly built on the basis of an original water detection channel 101 and an original land detection channel 103 in the seismic cable. Referring to fig. 7 a: the position of the newly-built water detection channel 102 is originally a water detection dummy channel, and the arrangement mode of the original water detection channel 101 meets the random distribution characteristic. The reason is that the arrangement mode of the original water detection channel 101 meets the random distribution characteristic, the water detection data at the position of the original water detection channel 102 can be reconstructed from the data acquired by the original water detection channel 101 according to the sparse sampling principle, and the commonly used reconstruction algorithms mainly include three types, namely a convex optimization algorithm, a greedy algorithm, a combination algorithm and the like. Referring to fig. 7b, the location of the newly-built land detection channel 104 is originally a land detection dummy channel, and the arrangement of the original land detection channel 103 satisfies the random distribution characteristic. Just because the original layout mode of the land detection channel 103 meets the random distribution characteristic, the land detection data at the position 104 can be reconstructed from the data acquired by the land detection channel 103 according to the sparse sampling principle, and the commonly used reconstruction algorithms mainly include three types, namely a convex optimization algorithm, a greedy algorithm, a combination algorithm and the like. Referring to FIG. 7 c: the water detection data of all the detector channels are obtained from the graph 7a, the land detection data of all the detector channels are obtained from the graph 7b, and the water detection data and the land detection data are combined to obtain the land and water dual detection data of all the detector channels, so that the land and water dual detection data can effectively suppress ghost wave interference and improve the seismic data precision.

In some embodiments of the present invention, the method further comprises the steps of:

and correcting the sparse sampling demodulation signal by adopting the attitude data of the seismic cable, and reconstructing the uniform sampling land detection demodulation signal by adopting the corrected signal.

In some embodiments of the present invention, the method further comprises the steps of: and recovering the dummy track activity, reconstructing the data of the dummy track into nonessential shot gather data, and reconstructing the seismic signals by adopting the uniformly sampled water detection signals, the uniformly sampled land detection signals and the nonessential shot gather data.

Specifically, the process flow refers to fig. 8a and 8b in combination, and the pre-business operation is advanced before the beginning of the formal operation. The method comprises the steps of carrying out automatic pre-operation detection on a plurality of seismic streamers before the beginning of marine seismic operation, automatically acquiring the configuration conditions of a dummy channel and an actual seismic channel of each streamer according to the dummy channel mark and the actual channel mark reported by a data transmission packet, and generating a dummy channel configuration parameter file. And (4) confirming the real earthquake channel with the fault through pre-operation detection, allowing a user to configure the fault channel into a dummy channel, and updating a dummy channel configuration parameter file. In seismic operation, the data reconstruction server reconstructs the water detection sparse signals into water detection uniform seismic files, reconstructs the land detection sparse signals into land detection uniform seismic files, and generates land and water dual-detection seismic data based on the combination of the water detection uniform seismic files and the land detection uniform seismic files. The reconstructed shot gather data is land and water dual-detection multi-channel seismic data for recording and subsequent processing and explanation, ghost wave interference can be suppressed, and the seismic data precision is improved. The data reconstruction server is relatively independent from the main control server, and the process of compressed sensing reconstruction does not influence the receiving of the seismic signals by the multiple seismic streamers and the work of units such as the main control server. The quality control server and the quality control client can display the multi-channel seismic data containing the dummy channels in real time and can also display the reconstructed shot gather data.

The utility model provides a marine seismic data acquisition system examines the setting of detection passageway, separately land through water alone and examines detection passageway, suppresses the influence of earthquake ghost wave, has widened the seismic signal frequency band, has improved seismic data resolution ratio. By adopting the sparse distribution of the water detection detectors and the land detection detectors, the resource allocation of the system is reduced. The distance between the real channels and the dummy channels is compressed through the combination of the real channels and the dummy channels, so that the density of the seismic channels is improved, and the transverse resolution of the marine seismic exploration is further improved.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (9)

1. A double-detection multi-channel marine seismic data receiving system is characterized by comprising a seismic cable with a plurality of seismic channels and a seismic data recording system;

the seismic traces are divided into at least two categories:

actually, carrying out: the detector is arranged in the land detection real road, and comprises a water detection real road and a land detection real road, wherein the water detection real road is only provided with the water detection detector, and the land detection real road is only provided with the land detection detector;

and (4) dummy road: the inside is not provided with a detector;

the seismic data recording system includes:

seismic cable communication interface unit: carrying out data communication with the water detection actual channel and the land detection actual channel of the seismic cable so as to acquire sparse hydrophobic detection seismic data and sparse land detection seismic data;

a data reconstruction server: communicating with the seismic cable communication interface unit for reconstruction of sparse water detection seismic data and sparse land detection seismic data;

the master control server: and the communication interface unit is communicated with the seismic cable communication interface unit and is used for sending working parameter information to the seismic cable.

2. A dual sensing multi-channel marine seismic data receiving system as claimed in claim 1, wherein said seismic channels are configured as follows: the method comprises the steps of randomly grouping seismic channels, wherein each group at least comprises 3 seismic channels, randomly configuring the seismic channels in the group into real channels and dummy channels, and at least comprising two real channels, and further randomly configuring the real channels into water detection real channels and land detection real channels.

3. The dual detection multi-channel marine seismic data receiving system of claim 1, wherein attitude sensors are disposed in the dummy channels, and the seismic cable communication interface unit is further in data communication with the dummy channels to collect sensing data of the attitude sensors.

4. The dual geophone multichannel marine seismic data receiving system in accordance with claim 1, wherein said seismic cable comprises in sequence along its length a front seismic section, a working section, and a rear seismic section, said working section comprising a plurality of working subsections;

the seismic cable also comprises data transmission packages which are arranged between the tail of the whole working section and each working subsection at intervals and are used for data acquisition of the working subsections; the seismic data recording system is in data communication with the data transfer package.

5. The dual-detection multi-channel marine seismic data receiving system of claim 4, wherein the seismic cable further comprises digital packets disposed within the working subsections, between seismic channels, for acquiring data for real and dummy channels and passing to the data transfer packets.

6. The dual detection multi-channel marine seismic data receiving system of claim 1, wherein the seismic data recording system further comprises a quality control client for analyzing and displaying the sampled seismic data and the reconstructed seismic data.

7. The dual detection multi-channel marine seismic data receiving system of claim 6, wherein the seismic data recording system further comprises a switch, the data reconstruction server, the master server, and the quality control client communicating with the seismic cable communication interface unit through the switch.

8. The dual-detection multi-channel marine seismic data receiving system of claim 1, wherein if a plurality of water detectors are disposed in the real water detection channel, the plurality of water detectors are connected in series or in parallel; if a plurality of land detection detectors are arranged in the land detection actual road, the land detection detectors are connected in series or in parallel.

9. The dual sensing multi-channel marine seismic data receiving system of claim 1, wherein the working section comprises, in order radially from inside to outside: the seismic channel comprises a cable core, wherein the cable core sequentially comprises from inside to outside along the radial direction: the cable comprises an electric power transmission cable, an inner shielding layer, an aramid fiber bearing layer, a signal transmission cable, an outer shielding layer and an external application protective layer.

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