CN113514874B - Time difference correction device, method and system between different types of seismic acquisition systems - Google Patents
Time difference correction device, method and system between different types of seismic acquisition systems Download PDFInfo
- Publication number
- CN113514874B CN113514874B CN202110343038.9A CN202110343038A CN113514874B CN 113514874 B CN113514874 B CN 113514874B CN 202110343038 A CN202110343038 A CN 202110343038A CN 113514874 B CN113514874 B CN 113514874B
- Authority
- CN
- China
- Prior art keywords
- seismic
- acquisition station
- seismic acquisition
- wave electric
- electric signals
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000005284 excitation Effects 0.000 claims abstract description 33
- 238000010586 diagram Methods 0.000 claims description 53
- 230000002159 abnormal effect Effects 0.000 claims description 16
- 230000005855 radiation Effects 0.000 claims description 12
- 238000010276 construction Methods 0.000 claims description 5
- 230000008054 signal transmission Effects 0.000 claims description 3
- 238000005070 sampling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/22—Transmitting seismic signals to recording or processing apparatus
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/22—Transmitting seismic signals to recording or processing apparatus
- G01V1/223—Radioseismic systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/22—Transmitting seismic signals to recording or processing apparatus
- G01V1/226—Optoseismic systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/24—Recording seismic data
- G01V1/247—Digital recording of seismic data, e.g. in acquisition units or nodes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/24—Recording seismic data
- G01V1/26—Reference-signal-transmitting devices, e.g. indicating moment of firing of shot
Landscapes
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Acoustics & Sound (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention relates to a time difference correction device, a method and a system between different types of earthquake acquisition systems, wherein a wave detector picks up an earthquake wave electric signal from earthquake waves excited by an earthquake excitation source and transmits the earthquake wave electric signal to a first earthquake acquisition station and a second earthquake acquisition station respectively, the first arrival time of the earthquake wave electric signal acquired by the first earthquake acquisition station and the second arrival time of the earthquake wave electric signal acquired by the second earthquake acquisition station are obtained respectively according to the earthquake wave electric signal acquired by the first earthquake acquisition station and the earthquake wave electric signal acquired by the second earthquake acquisition station, and then the time difference between a cableless earthquake acquisition system of the first earthquake acquisition station and a cableless earthquake acquisition system of the second earthquake acquisition station is corrected according to the first arrival time and the second arrival time, so that the problem of larger time difference when various types of earthquake acquisition systems are mixed is solved, and the comparability, the continuity and the accuracy of earthquake data acquired by different earthquake acquisition systems are ensured.
Description
Technical Field
The invention relates to the field of seismic research, in particular to a device, a method and a system for correcting time difference among different types of seismic acquisition systems.
Background
In the face of ultra-large-channel number, broadband and wide-azimuth full-wave data acquisition, high efficiency, low cost and capability of adapting to geophysical prospecting operation requirements of various geological conditions, the current seismic acquisition project sometimes needs to adopt various seismic exploration acquisition systems for mixed acquisition, but time differences can exist among different types of seismic acquisition systems, and the comparability, the continuity and the accuracy of the acquired seismic data are affected.
Disclosure of Invention
The invention aims to provide a time difference correction device, a time difference correction method and a time difference correction system between different types of seismic acquisition systems, so as to solve the problem of large time difference when a plurality of types of seismic acquisition systems are mixed, and ensure comparability, continuity and accuracy of seismic data acquired by the different seismic acquisition systems.
In order to achieve the above object, the present invention provides the following solutions:
a time difference correction device between different types of seismic acquisition systems, the device comprising: the system comprises an earthquake excitation source, a detector, a first earthquake acquisition station, a second earthquake acquisition station and a terminal;
the detector is embedded on a seismic wave radiation straight line radiated by the seismic excitation source;
the signal input end of the first seismic acquisition station and the signal input end of the second seismic acquisition station are connected with the detectors; the detector is used for picking up a seismic wave signal from the seismic waves excited by the seismic excitation source, converting the seismic wave signal into a seismic wave electric signal, and transmitting the seismic wave electric signal to the first seismic acquisition station and the second seismic acquisition station respectively; the first seismic acquisition station is an acquisition station with a cabled seismic acquisition system, and the second seismic acquisition station is an acquisition station with a cableless seismic acquisition system;
the signal output end of the first earthquake acquisition station is connected with the terminal; the terminal is used for converting the seismic wave electric signals of the first seismic acquisition station into vibration wave patterns of the seismic wave electric signals acquired by the first seismic acquisition station, and acquiring first arrival time of the seismic wave electric signals acquired by the first seismic acquisition station in the vibration wave patterns of the seismic wave electric signals acquired by the first seismic acquisition station;
the signal output end of the second earthquake acquisition station is connected with the terminal; the terminal is used for converting the seismic wave electric signals of the second seismic acquisition station into vibration wave patterns of the seismic wave electric signals acquired by the second seismic acquisition station, and obtaining second first arrival time of the seismic wave electric signals acquired by the second seismic acquisition station in the vibration wave patterns of the seismic wave electric signals acquired by the second seismic acquisition station;
the terminal is also used for correcting the time difference between the cabled seismic acquisition system of the first seismic acquisition station and the cableless seismic acquisition system of the second seismic acquisition station according to the first arrival time and the second arrival time.
Optionally, the number of detectors is m×n, the number of first seismic acquisition stations is m×n, and the number of second seismic acquisition stations is m×n;
the m multiplied by n wave detectors are uniformly embedded on m seismic wave radiation straight lines radiated by the seismic excitation source, and the n wave detectors on each seismic wave radiation straight line are embedded according to preset channel spacing.
A method for correcting time difference between different types of seismic acquisition systems, applied to the time difference correction systems between different types of seismic acquisition systems, the method comprising:
picking up a seismic wave signal from a seismic wave excited by a seismic excitation source through a detector, and converting the seismic wave signal into a seismic wave electric signal;
the seismic wave electric signals picked up by the detectors are respectively transmitted to a first seismic acquisition station and a second seismic acquisition station; the first seismic acquisition station is an acquisition station of a cabled seismic acquisition system, and the second seismic acquisition station is an acquisition station of a cableless seismic acquisition system;
obtaining a vibration waveform diagram of the seismic wave electric signals acquired by the first seismic acquisition station according to the seismic wave electric signals of the first seismic acquisition station, and obtaining first arrival time of the seismic wave electric signals acquired by the first seismic acquisition station in the vibration waveform diagram of the seismic wave electric signals acquired by the first seismic acquisition station;
obtaining a vibration waveform diagram of the seismic wave electric signals acquired by the second seismic acquisition station according to the seismic wave electric signals of the second seismic acquisition station, and obtaining a second first arrival time of the seismic wave electric signals acquired by the second seismic acquisition station in the vibration waveform diagram of the seismic wave electric signals acquired by the second seismic acquisition station;
correcting the time difference between the cabled seismic acquisition system of the first seismic acquisition station and the cableless seismic acquisition system of the second seismic acquisition station according to the first arrival time and the second arrival time.
Optionally, the obtaining a vibration waveform diagram of the seismic electric signal acquired by the first seismic acquisition station according to the seismic electric signal of the first seismic acquisition station specifically includes:
starting timing when earthquake waves are excited by an earthquake excitation source;
recording the time for the first seismic acquisition station to acquire seismic wave electric signals;
constructing a vibration waveform chart of the seismic wave electric signals acquired by the first seismic acquisition station according to the seismic wave electric signals acquired by the first seismic acquisition station and the recorded time for acquiring the seismic wave electric signals by the first seismic acquisition station; the abscissa of the vibration waveform diagram is time, and the ordinate is vibration amplitude of the seismic wave electric signal.
Optionally, the first arrival time of the seismic wave electric signal acquired by the first seismic acquisition station is obtained from a vibration waveform chart of the seismic wave electric signal acquired by the first seismic acquisition station, which specifically includes:
when the number of the first seismic acquisition stations is m multiplied by n, determining a vibration waveform chart with overshoot or no jump in the vibration waveform chart, and determining the first seismic acquisition station corresponding to the vibration waveform chart with overshoot or no jump as an abnormal channel;
deleting abnormal channels in the m multiplied by n first seismic acquisition stations, and determining each acquisition station which is not deleted in the m multiplied by n first seismic acquisition stations as a normal channel;
obtaining the first arrival time of each normal road according to the vibration waveform diagram of the seismic wave electric signals collected by each normal road;
the average value of the first arrival time of each normal track is obtained and determined as the first arrival time.
Optionally, the correcting the time difference between the cabled seismic acquisition system of the first seismic acquisition station and the cableless seismic acquisition system of the second seismic acquisition station according to the first arrival time and the second arrival time specifically includes:
obtaining a time difference between the first arrival time and the second arrival time;
and correcting the time difference between the cabled seismic acquisition system of the first seismic acquisition station and the cableless seismic acquisition system of the second seismic acquisition station according to the time difference.
A time difference correction system between different types of seismic acquisition systems, the system comprising:
the earthquake wave electric signal pickup module is used for picking up earthquake wave signals from earthquake waves excited by the earthquake excitation source through the wave detectors and converting the earthquake wave signals into earthquake wave electric signals;
the seismic wave electric signal transmission module is used for respectively transmitting the seismic wave electric signals picked up by the detectors to the first seismic acquisition station and the second seismic acquisition station; the first seismic acquisition station is an acquisition station with a cabled seismic acquisition system, and the second seismic acquisition station is an acquisition station with a cableless seismic acquisition system;
the first arrival time acquisition module is used for acquiring a vibration waveform chart of the seismic wave electric signals acquired by the first seismic acquisition station according to the seismic wave electric signals of the first seismic acquisition station, and acquiring the first arrival time of the seismic wave electric signals acquired by the first seismic acquisition station in the vibration waveform chart of the seismic wave electric signals acquired by the first seismic acquisition station;
the second first arrival time obtaining module is used for obtaining a vibration waveform diagram of the seismic wave electric signals acquired by the second seismic acquisition station according to the seismic wave electric signals of the second seismic acquisition station, and obtaining second first arrival time of the seismic wave electric signals acquired by the second seismic acquisition station in the vibration waveform diagram of the seismic wave electric signals acquired by the second seismic acquisition station;
the time difference correction module is used for correcting the time difference between the cabled seismic acquisition system of the first seismic acquisition station and the cableless seismic acquisition system of the second seismic acquisition station according to the first arrival time and the second arrival time.
Optionally, the first arrival time obtaining module specifically includes:
the timing submodule is used for starting timing when earthquake waves are excited by the earthquake excitation source;
the time recording sub-module is used for recording the time of the first seismic acquisition station for acquiring the seismic wave electric signals;
the vibration waveform diagram construction submodule is used for constructing a vibration waveform diagram of the seismic wave electric signals acquired by the first seismic acquisition station according to the seismic wave electric signals acquired by the first seismic acquisition station and recorded time of the seismic wave electric signals acquired by the first seismic acquisition station; the abscissa of the vibration waveform diagram is time, and the ordinate is vibration amplitude of the seismic wave electric signal.
Optionally, the first arrival time obtaining module further includes:
the abnormal channel determining submodule is used for determining a vibration waveform chart with overshoot or no jump in the vibration waveform chart when the number of the first seismic acquisition stations is m multiplied by n, and determining the first seismic acquisition station corresponding to the vibration waveform chart with overshoot or no jump as an abnormal channel;
the normal channel determining submodule is used for deleting abnormal channels in the m multiplied by n first seismic acquisition stations and determining each acquisition station which is not deleted in the m multiplied by n first seismic acquisition stations as a normal channel;
the first arrival time obtaining sub-module is used for obtaining the first arrival time of each normal road according to the vibration waveform diagram of the seismic wave electric signals collected by each normal road;
the first arrival time determining submodule is used for obtaining the average value of the first arrival time of each normal track and determining the average value as the first arrival time.
Optionally, the time difference correction module specifically includes:
the time difference obtaining submodule is used for obtaining the time difference between the first arrival time and the second arrival time;
and the time difference correction submodule is used for correcting the time difference between the cabled seismic acquisition system of the first seismic acquisition station and the cableless seismic acquisition system of the second seismic acquisition station according to the time difference.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention provides a time difference correction device, a method and a system between different types of earthquake acquisition systems, wherein a wave detector picks up an earthquake wave electric signal from earthquake waves excited by an earthquake excitation source and transmits the earthquake wave electric signal to a first earthquake acquisition station and a second earthquake acquisition station respectively, the first arrival time of the earthquake wave electric signal acquired by the first earthquake acquisition station and the second first arrival time of the earthquake wave electric signal acquired by the second earthquake acquisition station are obtained respectively according to the earthquake wave electric signal acquired by the first earthquake acquisition station and the earthquake wave electric signal acquired by the second earthquake acquisition station, and then the time difference between a cableless earthquake acquisition system of the first earthquake acquisition station and a cableless earthquake acquisition system of the second earthquake acquisition station is corrected according to the first arrival time and the second first arrival time, so that the problem of larger time difference when various types of earthquake acquisition systems are mixed is solved, and the comparability, the continuity and the accuracy of data acquired by different earthquake acquisition systems are ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for correcting time difference between different types of seismic acquisition systems according to the present invention;
fig. 2 is a block diagram of a method for correcting time difference between different types of seismic acquisition systems according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a time difference correction device, a time difference correction method and a time difference correction system between different types of seismic acquisition systems, so as to solve the problem of large time difference when a plurality of types of seismic acquisition systems are mixed, and ensure comparability, continuity and accuracy of seismic data acquired by the different seismic acquisition systems.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
The invention provides a time difference correction device between different types of earthquake acquisition systems, which comprises: the system comprises a seismic excitation source, a detector, a first seismic acquisition station, a second seismic acquisition station and a terminal.
The detectors are arranged on the seismic wave radiation straight line of the seismic excitation source radiation.
The signal input end of the first seismic acquisition station and the signal input end of the second seismic acquisition station are connected with detectors; the wave detector is used for picking up a seismic wave signal from the seismic waves excited by the seismic excitation source, converting the seismic wave signal into a seismic wave electric signal, and transmitting the seismic wave electric signal to the first seismic acquisition station and the second seismic acquisition station respectively; the first seismic acquisition station is an acquisition station with a cabled seismic acquisition system and the second seismic acquisition station is an acquisition station with a cableless seismic acquisition system.
The signal output end of the first earthquake acquisition station is connected with the terminal through an optical fiber cable or in a wireless mode; the terminal is used for converting the seismic wave electric signals of the first seismic acquisition station into vibration waveform diagrams of the seismic wave electric signals acquired by the first seismic acquisition station, and obtaining first arrival time of the seismic wave electric signals acquired by the first seismic acquisition station in the vibration waveform diagrams of the seismic wave electric signals acquired by the first seismic acquisition station.
The signal output end of the second seismic acquisition station is connected with the terminal; the terminal is used for converting the seismic wave electric signals of the second seismic acquisition station into vibration waveform diagrams of the seismic wave electric signals acquired by the second seismic acquisition station, and obtaining second first arrival time of the seismic wave electric signals acquired by the second seismic acquisition station in the vibration waveform diagrams of the seismic wave electric signals acquired by the second seismic acquisition station.
There are two ways in which the first seismic acquisition station and the second seismic acquisition station transmit seismic electrical signals to the terminal. The first type is that the first earthquake collecting station and the second earthquake collecting station transmit the earthquake wave electric signals collected in real time to the terminal in real time until the collecting tasks of the first earthquake collecting station and the second earthquake collecting station are finished; the second type is that the first earthquake collecting station and the second earthquake collecting station store all earthquake wave electric signals in the collecting time period, and the earthquake wave electric signals are led into the terminal through a USB data line or a wireless mode after the collecting task is finished.
The terminal is also used for correcting the time difference between the cabled seismic acquisition system of the first seismic acquisition station and the cableless seismic acquisition system of the second seismic acquisition station according to the first arrival time and the second arrival time.
Preferably, the number of detectors is m×n, the number of first seismic acquisition stations is m×n, and the number of second seismic acquisition stations is m×n.
The m multiplied by n detectors are uniformly embedded on m seismic wave radiation lines radiated by the seismic excitation source, and the n detectors on each seismic wave radiation line are embedded according to a preset channel interval.
The invention provides a time difference correction method between different types of seismic acquisition systems, which is applied to the time difference correction system between different types of seismic acquisition systems, as shown in fig. 2, and comprises the following steps:
s101, seismic wave signals are picked up from seismic waves excited by a seismic excitation source through a detector, and the seismic wave signals are converted into seismic wave electric signals.
S102, seismic wave electric signals picked up by a wave detector are respectively transmitted to a first seismic acquisition station and a second seismic acquisition station; the first seismic acquisition station is an acquisition station with a cabled seismic acquisition system and the second seismic acquisition station is an acquisition station with a cableless seismic acquisition system.
S103, obtaining a vibration waveform diagram of the seismic wave electric signals acquired by the first seismic acquisition station according to the seismic wave electric signals of the first seismic acquisition station, and obtaining the first arrival time of the seismic wave electric signals acquired by the first seismic acquisition station in the vibration waveform diagram of the seismic wave electric signals acquired by the first seismic acquisition station.
S104, obtaining a vibration waveform diagram of the seismic wave electric signals acquired by the second seismic acquisition station according to the seismic wave electric signals of the second seismic acquisition station, and obtaining second first arrival time of the seismic wave electric signals acquired by the second seismic acquisition station in the vibration waveform diagram of the seismic wave electric signals acquired by the second seismic acquisition station.
S105, correcting the time difference between the cabled seismic acquisition system of the first seismic acquisition station and the cableless seismic acquisition system of the second seismic acquisition station according to the first arrival time and the second arrival time.
The method comprises the following specific processes:
in step S101, a seismic excitation source is disposed at the seismic source, the seismic excitation source excites a seismic wave, and a detector detects a seismic wave electric signal from the seismic wave excited by the seismic excitation source.
In step S102, the first seismic acquisition station and the second seismic acquisition station are acquisition stations of two different seismic acquisition system types. Thus, the first and second seismic acquisition stations may produce time differences in acquiring the seismic electrical signals.
Step S103 specifically includes:
starting timing when earthquake waves are excited by an earthquake excitation source;
recording the time for the first seismic acquisition station to acquire seismic wave electric signals;
constructing a vibration waveform chart of the seismic wave electric signals acquired by the first seismic acquisition station according to the seismic wave electric signals acquired by the first seismic acquisition station and the recorded time of the seismic wave electric signals acquired by the first seismic acquisition station; the abscissa of the vibration waveform diagram is time, and the ordinate is vibration amplitude of the seismic wave electric signal.
Step S103 further includes:
when the number of the first seismic acquisition stations is m multiplied by n, determining a vibration waveform chart with overshoot or no jump in the vibration waveform chart, and determining the first seismic acquisition station corresponding to the vibration waveform chart with overshoot or no jump as an abnormal channel;
deleting abnormal channels in the m multiplied by n first seismic acquisition stations, and determining each acquisition station which is not deleted in the m multiplied by n first seismic acquisition stations as a normal channel;
obtaining the first arrival time of each normal road according to the vibration waveform diagram of the seismic wave electric signals collected by each normal road;
the average value of the first arrival time of each normal track is obtained and determined as the first arrival time.
The implementation method of step S104 is the same as that of step S103.
Step S105 specifically includes:
obtaining a time difference between the first arrival time and the second arrival time;
and correcting the time difference between the cabled seismic acquisition system of the first seismic acquisition station and the cableless seismic acquisition system of the second seismic acquisition station according to the time difference.
As shown in FIG. 1, the present invention provides a specific embodiment for a method of time difference correction between different types of seismic acquisition systems.
Step 1: on a straight line L1 of the outward radiation of the excitation source S, detector embedded points P1, P2 … … Pn are sequentially selected according to a track interval x, wherein x is usually 50m;
sequentially selecting detector embedded points P1', P2' … … Pn ' according to a track interval x on a straight line L2 of the outward radiation of the excitation source S;
more arrangements can be provided if desired;
step 2: the method comprises the steps of arranging a seismic source at an excitation source S, and burying detectors 1, 2, n, 1', 2' and n 'at P1, P2, P3, P1', P2 'and Pn' respectively;
the detectors 1, 2, n, 1', 2', n ' can be either single detectors or detector strings;
step 3: the detector 1 is connected to an A-type acquisition station 1 and a B-type acquisition station 1, the detector 2 is connected to an A-type acquisition station 2 and a B-type acquisition station 2, and so on, the detector n is connected to an A-type acquisition station n and a B-type acquisition station n, and the detector n ' is connected to an A-type acquisition station n ' and a B-type acquisition station n ';
step 4: the seismic source and the acquisition station are connected with the terminal, the sampling rate set by the two sets of seismic acquisition systems is the sampling rate adopted by the construction project, and the same recording length and the same front-end gain are set;
step 5: the terminal sends an instruction to excite a seismic source;
step 6: the detector converts the acquired seismic signals into electrical signals, and transmits the electrical signals to an A-type acquisition station and a B-type acquisition station, and finally transmits the electrical signals to the terminal;
step 7: repeating the steps 5 and 6, measuring for a plurality of times, and collecting a plurality of vibration waveform diagrams of the two sets of systems;
step 8: extracting the first arrival time of each shot of each system according to the vibration waveform diagram;
step 9: after abnormal channels are removed according to vibration waveforms, taking out the normal state of the A-type seismic acquisition systemThe average value of the first arrival time is t A Taking the average value t of the first arrival time of the normal channel of the B-type seismic acquisition system B Average time difference between systems
Step 10: get first arrival time t of A-type seismic acquisition system A For reference, the first arrival time t of the B-type seismic acquisition system B Subtracting the average time differenceThe time difference between two different types of seismic acquisition systems can be corrected.
The invention connects the detectors to different types of acquisition stations respectively, and then connects the acquisition stations and the seismic source of the wired system to a server; exciting a seismic source, converting the picked seismic signals into electric signals by a detector, and transmitting the electric signals to different types of acquisition systems; by calculation, the average time difference between different types of seismic acquisition systems can be obtainedGet first arrival time t of A-type seismic acquisition system A For reference, the first arrival time t of the B-type seismic acquisition system B Subtracting the average time difference +.>The time difference between two different types of seismic acquisition systems can be corrected. The time difference correction method between the different types of seismic acquisition systems solves the problems of large time difference and difficult implementation when the different types of seismic acquisition systems are mixed in the construction process, and ensures the comparability, the continuity and the accuracy of seismic data acquired by the different types of seismic acquisition systems.
The invention also provides a time difference correction system between different types of earthquake acquisition systems, which comprises:
and the earthquake wave electric signal pickup module is used for picking up earthquake wave signals from earthquake waves excited by the earthquake excitation source through the wave detectors and converting the earthquake wave signals into the earthquake wave electric signals.
The seismic wave electric signal transmission module is used for respectively transmitting the seismic wave electric signals picked up by the detectors to the first seismic acquisition station and the second seismic acquisition station; the first seismic acquisition station is an acquisition station with a cabled seismic acquisition system and the second seismic acquisition station is an acquisition station with a cableless seismic acquisition system.
The first arrival time obtaining module is used for obtaining a vibration waveform diagram of the seismic wave electric signals collected by the first seismic acquisition station according to the seismic wave electric signals of the first seismic acquisition station, and obtaining the first arrival time of the seismic wave electric signals collected by the first seismic acquisition station in the vibration waveform diagram of the seismic wave electric signals collected by the first seismic acquisition station.
The second first arrival time obtaining module is used for obtaining a vibration waveform diagram of the seismic wave electric signals collected by the second seismic acquisition station according to the seismic wave electric signals of the second seismic acquisition station, and obtaining second first arrival time of the seismic wave electric signals collected by the second seismic acquisition station in the vibration waveform diagram of the seismic wave electric signals collected by the second seismic acquisition station.
The time difference correction module is used for correcting the time difference between the cabled seismic acquisition system of the first seismic acquisition station and the cableless seismic acquisition system of the second seismic acquisition station according to the first arrival time and the second arrival time.
The first arrival time obtaining module specifically comprises:
and the timing sub-module is used for starting timing from the excitation of the earthquake waves by the earthquake excitation source.
And the time recording sub-module is used for recording the time of the first seismic acquisition station for acquiring the seismic wave electric signals.
The vibration waveform diagram construction submodule is used for constructing a vibration waveform diagram of the seismic wave electric signals acquired by the first seismic acquisition station according to the seismic wave electric signals acquired by the first seismic acquisition station and the recorded time of the seismic wave electric signals acquired by the first seismic acquisition station; the abscissa of the vibration waveform diagram is time, and the ordinate is vibration amplitude of the seismic wave electric signal.
The first arrival time obtaining module further comprises:
and the abnormal channel determining sub-module is used for determining a vibration waveform diagram with overshoot or no jump in the vibration waveform diagram when the number of the first seismic acquisition stations is m multiplied by n, and determining the first seismic acquisition station corresponding to the vibration waveform diagram with overshoot or no jump as the abnormal channel.
And the normal channel determining sub-module is used for deleting abnormal channels in the m multiplied by n first seismic acquisition stations and determining each acquisition station which is not deleted in the m multiplied by n first seismic acquisition stations as a normal channel.
And the first arrival time obtaining sub-module is used for obtaining the first arrival time of each normal road according to the vibration waveform diagram of the seismic wave electric signals collected by each normal road.
The first arrival time determining submodule is used for obtaining the average value of the first arrival time of each normal track and determining the average value as the first arrival time.
The time difference correction module specifically comprises:
the time difference obtaining sub-module is used for obtaining the time difference between the first arrival time and the second first arrival time.
And the time difference correction submodule is used for correcting the time difference between the cabled seismic acquisition system of the first seismic acquisition station and the cableless seismic acquisition system of the second seismic acquisition station according to the time difference.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the system disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to assist in understanding the methods of the present invention and the core ideas thereof; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (10)
1. A time difference correction device between different types of seismic acquisition systems, the device comprising: the system comprises an earthquake excitation source, a detector, a first earthquake acquisition station, a second earthquake acquisition station and a terminal;
the detector is embedded on a seismic wave radiation straight line radiated by the seismic excitation source;
the signal input end of the first seismic acquisition station and the signal input end of the second seismic acquisition station are connected with the detectors; the detector is used for picking up a seismic wave signal from the seismic waves excited by the seismic excitation source, converting the seismic wave signal into a seismic wave electric signal, and transmitting the seismic wave electric signal to the first seismic acquisition station and the second seismic acquisition station respectively; the first seismic acquisition station is an acquisition station with a cabled seismic acquisition system, and the second seismic acquisition station is an acquisition station with a cableless seismic acquisition system;
the signal output end of the first earthquake acquisition station is connected with the terminal; the terminal is used for converting the seismic wave electric signals of the first seismic acquisition station into vibration waveform diagrams of the seismic wave electric signals acquired by the first seismic acquisition station, and acquiring first arrival time of the seismic wave electric signals acquired by the first seismic acquisition station in the vibration waveform diagrams of the seismic wave electric signals acquired by the first seismic acquisition station;
the signal output end of the second earthquake acquisition station is connected with the terminal; the terminal is used for converting the seismic wave electric signals of the second seismic acquisition station into vibration waveform diagrams of the seismic wave electric signals acquired by the second seismic acquisition station, and obtaining second first arrival time of the seismic wave electric signals acquired by the second seismic acquisition station in the vibration waveform diagrams of the seismic wave electric signals acquired by the second seismic acquisition station;
the terminal is also used for correcting the time difference between the cabled seismic acquisition system of the first seismic acquisition station and the cableless seismic acquisition system of the second seismic acquisition station according to the first arrival time and the second arrival time.
2. The time difference correction device between different types of seismic acquisition systems according to claim 1, wherein the number of detectors is m x n, the number of first seismic acquisition stations is m x n, and the number of second seismic acquisition stations is m x n;
the m multiplied by n wave detectors are uniformly embedded on m seismic wave radiation straight lines radiated by the seismic excitation source, and the n wave detectors on each seismic wave radiation straight line are embedded according to preset channel spacing.
3. A method of time difference correction between different types of seismic acquisition systems, applied to a device for time difference correction between different types of seismic acquisition systems as claimed in any one of claims 1 to 2, the method comprising:
picking up a seismic wave signal from a seismic wave excited by a seismic excitation source through a detector, and converting the seismic wave signal into a seismic wave electric signal;
the seismic wave electric signals picked up by the detectors are respectively transmitted to a first seismic acquisition station and a second seismic acquisition station; the first seismic acquisition station is an acquisition station with a cabled seismic acquisition system, and the second seismic acquisition station is an acquisition station with a cableless seismic acquisition system;
obtaining a vibration waveform diagram of the seismic wave electric signals acquired by the first seismic acquisition station according to the seismic wave electric signals of the first seismic acquisition station, and obtaining first arrival time of the seismic wave electric signals acquired by the first seismic acquisition station in the vibration waveform diagram of the seismic wave electric signals acquired by the first seismic acquisition station;
obtaining a vibration waveform diagram of the seismic wave electric signals acquired by the second seismic acquisition station according to the seismic wave electric signals of the second seismic acquisition station, and obtaining a second first arrival time of the seismic wave electric signals acquired by the second seismic acquisition station in the vibration waveform diagram of the seismic wave electric signals acquired by the second seismic acquisition station;
correcting the time difference between the cabled seismic acquisition system of the first seismic acquisition station and the cableless seismic acquisition system of the second seismic acquisition station according to the first arrival time and the second arrival time.
4. A method of correcting time differences between different types of seismic acquisition systems according to claim 3, wherein the obtaining a vibration waveform of the seismic electrical signals acquired by the first seismic acquisition station from the seismic electrical signals of the first seismic acquisition station specifically comprises:
starting timing when earthquake waves are excited by an earthquake excitation source;
recording the time for the first seismic acquisition station to acquire seismic wave electric signals;
constructing a vibration waveform chart of the seismic wave electric signals acquired by the first seismic acquisition station according to the seismic wave electric signals acquired by the first seismic acquisition station and the recorded time for acquiring the seismic wave electric signals by the first seismic acquisition station; the abscissa of the vibration waveform diagram is time, and the ordinate is vibration amplitude of the seismic wave electric signal.
5. A method of correcting time differences between different types of seismic acquisition systems according to claim 3, wherein the obtaining of the first arrival time of the seismic electrical signal acquired by the first seismic acquisition station in the seismic waveform of the seismic electrical signal acquired by the first seismic acquisition station comprises:
when the number of the first seismic acquisition stations is m multiplied by n, determining a vibration waveform chart with overshoot or no jump in the vibration waveform chart, and determining the first seismic acquisition station corresponding to the vibration waveform chart with overshoot or no jump as an abnormal channel;
deleting abnormal channels in the m multiplied by n first seismic acquisition stations, and determining each acquisition station which is not deleted in the m multiplied by n first seismic acquisition stations as a normal channel;
obtaining the first arrival time of each normal road according to the vibration waveform diagram of the seismic wave electric signals collected by each normal road;
the average value of the first arrival time of each normal track is obtained and determined as the first arrival time.
6. A method of correcting for time differences between different types of seismic acquisition systems according to claim 3, wherein the correcting for time differences between a cabled seismic acquisition system of the first seismic acquisition station and a cableless seismic acquisition system of the second seismic acquisition station according to the first arrival time and the second arrival time specifically comprises:
obtaining a time difference between the first arrival time and the second arrival time;
and correcting the time difference between the cabled seismic acquisition system of the first seismic acquisition station and the cableless seismic acquisition system of the second seismic acquisition station according to the time difference.
7. A time difference correction system between different types of seismic acquisition systems, the system comprising:
the earthquake wave electric signal pickup module is used for picking up earthquake wave signals from earthquake waves excited by the earthquake excitation source through the wave detectors and converting the earthquake wave signals into earthquake wave electric signals;
the seismic wave electric signal transmission module is used for respectively transmitting the seismic wave electric signals picked up by the detectors to the first seismic acquisition station and the second seismic acquisition station; the first seismic acquisition station is an acquisition station with a cabled seismic acquisition system, and the second seismic acquisition station is an acquisition station with a cableless seismic acquisition system;
the first arrival time acquisition module is used for acquiring a vibration waveform chart of the seismic electric signals acquired by the first seismic acquisition station according to the seismic electric signals of the first seismic acquisition station, and acquiring the first arrival time of the seismic electric signals acquired by the first seismic acquisition station in the vibration waveform chart of the seismic electric signals acquired by the first seismic acquisition station;
the second first arrival time obtaining module is used for obtaining a vibration waveform diagram of the seismic wave electric signals acquired by the second seismic acquisition station according to the seismic wave electric signals of the second seismic acquisition station, and obtaining second first arrival time of the seismic wave electric signals acquired by the second seismic acquisition station in the vibration waveform diagram of the seismic wave electric signals acquired by the second seismic acquisition station;
the time difference correction module is used for correcting the time difference between the cabled seismic acquisition system of the first seismic acquisition station and the cableless seismic acquisition system of the second seismic acquisition station according to the first arrival time and the second arrival time.
8. The time difference correction system between different types of seismic acquisition systems according to claim 7, wherein the first arrival time acquisition module specifically comprises:
the timing submodule is used for starting timing when earthquake waves are excited by the earthquake excitation source;
the time recording sub-module is used for recording the time of the first seismic acquisition station for acquiring the seismic wave electric signals;
the vibration waveform diagram construction submodule is used for constructing a vibration waveform diagram of the seismic wave electric signals acquired by the first seismic acquisition station according to the seismic wave electric signals acquired by the first seismic acquisition station and recorded time of the seismic wave electric signals acquired by the first seismic acquisition station; the abscissa of the vibration waveform diagram is time, and the ordinate is vibration amplitude of the seismic wave electric signal.
9. The time difference correction system between different types of seismic acquisition systems of claim 7, wherein the first arrival time acquisition module further comprises:
the abnormal channel determining submodule is used for determining a vibration waveform chart with overshoot or no jump in the vibration waveform chart when the number of the first seismic acquisition stations is m multiplied by n, and determining the first seismic acquisition station corresponding to the vibration waveform chart with overshoot or no jump as an abnormal channel;
the normal channel determining submodule is used for deleting abnormal channels in the m multiplied by n first seismic acquisition stations and determining each acquisition station which is not deleted in the m multiplied by n first seismic acquisition stations as a normal channel;
the first arrival time obtaining sub-module is used for obtaining the first arrival time of each normal road according to the vibration waveform diagram of the seismic wave electric signals collected by each normal road;
the first arrival time determining submodule is used for obtaining the average value of the first arrival time of each normal track and determining the average value as the first arrival time.
10. The time difference correction system between different types of seismic acquisition systems of claim 7, wherein the time difference correction module specifically comprises:
the time difference obtaining submodule is used for obtaining the time difference between the first arrival time and the second arrival time;
and the time difference correction submodule is used for correcting the time difference between the cabled seismic acquisition system of the first seismic acquisition station and the cableless seismic acquisition system of the second seismic acquisition station according to the time difference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110343038.9A CN113514874B (en) | 2021-03-30 | 2021-03-30 | Time difference correction device, method and system between different types of seismic acquisition systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110343038.9A CN113514874B (en) | 2021-03-30 | 2021-03-30 | Time difference correction device, method and system between different types of seismic acquisition systems |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113514874A CN113514874A (en) | 2021-10-19 |
| CN113514874B true CN113514874B (en) | 2024-02-02 |
Family
ID=78062347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110343038.9A Active CN113514874B (en) | 2021-03-30 | 2021-03-30 | Time difference correction device, method and system between different types of seismic acquisition systems |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113514874B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4759636A (en) * | 1985-12-16 | 1988-07-26 | Amoco Corporation | Method and system for real-time processing of seismic data |
| CN101118287A (en) * | 2007-09-12 | 2008-02-06 | 北京华昌新业物探技术服务有限公司 | Spectrum equalizing and non time difference combined method in seismic prospecting single cymoscope recording channel chamber |
| CN106291752A (en) * | 2015-05-25 | 2017-01-04 | 云南航天工程物探检测股份有限公司 | Seismic detector system delay testing method |
| CN108375789A (en) * | 2018-02-11 | 2018-08-07 | 中国石油化工股份有限公司 | The simultaneously match method of Collect jointly seismic data |
| CN112379436A (en) * | 2020-11-02 | 2021-02-19 | 中国石油天然气集团有限公司 | Method and device for calculating static correction value of seismic data excited by mixed seismic source |
-
2021
- 2021-03-30 CN CN202110343038.9A patent/CN113514874B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4759636A (en) * | 1985-12-16 | 1988-07-26 | Amoco Corporation | Method and system for real-time processing of seismic data |
| CN101118287A (en) * | 2007-09-12 | 2008-02-06 | 北京华昌新业物探技术服务有限公司 | Spectrum equalizing and non time difference combined method in seismic prospecting single cymoscope recording channel chamber |
| CN106291752A (en) * | 2015-05-25 | 2017-01-04 | 云南航天工程物探检测股份有限公司 | Seismic detector system delay testing method |
| CN108375789A (en) * | 2018-02-11 | 2018-08-07 | 中国石油化工股份有限公司 | The simultaneously match method of Collect jointly seismic data |
| CN112379436A (en) * | 2020-11-02 | 2021-02-19 | 中国石油天然气集团有限公司 | Method and device for calculating static correction value of seismic data excited by mixed seismic source |
Non-Patent Citations (1)
| Title |
|---|
| 浅层地震勘探数据拟同步采集时差分析与实践;朱德兵;平利姣;朱自强;;地球物理学进展(第06期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113514874A (en) | 2021-10-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107843918B (en) | Seismic prospecting instrument with negative delay function and data acquisition method thereof | |
| CN110942610A (en) | Intelligent rock microseismic acquisition and data wireless transmission system | |
| CN205788714U (en) | A kind of 32 triple channel synchronous data collection devices with wireless self-networking function | |
| CN105277968A (en) | Seismic excitation source automatic excitation control method and device | |
| US9618640B2 (en) | Removing offset from seismic signals | |
| EP3805811B1 (en) | Marine seismic data acquisition control device | |
| CN113514874B (en) | Time difference correction device, method and system between different types of seismic acquisition systems | |
| CN210626679U (en) | Marine seismic data transmission unit | |
| CN210626680U (en) | Ocean seismic data photoelectric conversion unit | |
| CN210666043U (en) | Marine seismic data acquisition control device | |
| CN210626678U (en) | Sectional type marine seismic cable | |
| CN113296164A (en) | Wireless real-time transmission node type seismograph system and synchronous calibration method | |
| CN111220880A (en) | Underground cable time synchronization device, fault positioning system and method | |
| CN111610557A (en) | Oil exploration detection device and method based on 5G communication | |
| RU2207593C1 (en) | Process of collection of seismic data and system for its realization | |
| CN110716232A (en) | Marine seismic cable and working section thereof | |
| RU2777271C1 (en) | Seismic data collection system | |
| CA1234425A (en) | Method and apparatus for multi-line seismic exploration | |
| CN214845806U (en) | Quick wiring node digital seismograph code scanning device | |
| CN109286423B (en) | Simplex bidirectional carrier communication device based on mountain area survey receiver | |
| CN217561749U (en) | Synchronous acquisition asynchronous transmission system for acquiring vibration signals in geological exploration | |
| CN217506139U (en) | Multi-channel wide-band node-based seismic acquisition system | |
| CN114061742B (en) | Detection system of extensible very low frequency chain type detection array | |
| CN106646590A (en) | Sea quake underwater data collection system | |
| US9213115B2 (en) | Analog in power supply module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |