CN112083475A - Seismic data acquisition method of seismic data acquisition system - Google Patents
Seismic data acquisition method of seismic data acquisition system Download PDFInfo
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- CN112083475A CN112083475A CN202010881348.1A CN202010881348A CN112083475A CN 112083475 A CN112083475 A CN 112083475A CN 202010881348 A CN202010881348 A CN 202010881348A CN 112083475 A CN112083475 A CN 112083475A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/02—Generating seismic energy
- G01V1/143—Generating seismic energy using mechanical driving means, e.g. motor driven shaft
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
- G01V1/18—Receiving elements, e.g. seismometer, geophone or torque detectors, for localised single point measurements
- G01V1/181—Geophones
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V2210/00—Details of seismic processing or analysis
- G01V2210/10—Aspects of acoustic signal generation or detection
- G01V2210/12—Signal generation
- G01V2210/129—Source location
- G01V2210/1295—Land surface
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V2210/00—Details of seismic processing or analysis
- G01V2210/10—Aspects of acoustic signal generation or detection
- G01V2210/14—Signal detection
- G01V2210/142—Receiver location
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Abstract
The embodiment of the invention provides a seismic data acquisition method of a seismic data acquisition system. The seismic data acquisition method comprises the following steps: if a vibration sensor in the seismic source excitation device senses that external vibration is larger than a preset vibration threshold value, respectively sending a first control signal to a locator and a timer in the seismic source excitation device; if the locator receives the first control signal, current position information is obtained and sent to a signal transmitter in the seismic source excitation device; if the timer receives the first control signal, current time information is obtained and sent to the signal transmitter; if the signal transmitter receives the current position information and the current time information, a second control signal is sent to a ground seismic data acquisition device; and if the ground seismic data acquisition device receives the second control signal, acquiring seismic data. The accuracy of the seismic exploration result is ensured.
Description
Technical Field
The invention relates to the technical field of seismic exploration, in particular to a seismic data acquisition method of a seismic data acquisition system.
Background
Seismic exploration refers to a geophysical exploration method for inferring the properties and morphology of subsurface rock formations by observing and analyzing the earth's response to artificially excited seismic waves, using differences in the elasticity and density of the subsurface medium.
The seismic waves are excited on the earth surface by a manual method, when the seismic waves are propagated to the underground, the seismic waves encounter rock stratum interfaces with different medium properties, the seismic waves are reflected and refracted, a geophone is used for receiving the seismic waves on the earth surface or in a well, and the received seismic waves are related to the characteristics of a seismic source, the position of a wave detection point and the properties and the structure of the underground rock stratum through which the seismic waves pass, so that the properties and the forms of the underground rock stratum can be inferred by processing and explaining the received seismic waves.
In order to ensure the accuracy of seismic exploration results, the synchronization of seismic source excitation and seismic data acquisition needs to be ensured, and the prior art has no effective method. Therefore, ensuring the synchronous operation of the seismic source excitation and the seismic data acquisition and further ensuring the accuracy of the seismic exploration result becomes an urgent problem to be solved.
Disclosure of Invention
Aiming at the problems in the prior art, the embodiment of the invention provides a seismic data acquisition method of a seismic data acquisition system.
The embodiment of the invention provides a seismic data acquisition method of a seismic data acquisition system, wherein the seismic data acquisition system comprises: seismic source excitation device and ground seismic data acquisition device, this seismic source excitation device includes:
the device comprises a shell, a vibration sensor, a positioner, a timer and a signal emitter are arranged in the shell; wherein the content of the first and second substances,
the vibration sensor is respectively and electrically connected with the positioner and the timer, and the positioner and the timer are both electrically connected with the signal emitter;
the vibration sensor is used for respectively sending first control signals to the positioner and the timer after sensing that external vibration is larger than a preset vibration threshold value;
the locator is used for acquiring current position information after receiving the first control signal and sending the current position information to the signal transmitter;
the timer is used for acquiring current time information after receiving the first control signal and sending the current time information to the signal emitter;
the signal transmitter is used for transmitting a second control signal to the ground seismic data acquisition device after receiving the current position information and the current time information, so that the ground seismic data acquisition device acquires seismic data after receiving the second control signal;
the ground seismic data acquisition device comprises:
a signal receiver, a detector and a memory; wherein the content of the first and second substances,
the signal receiver is electrically connected with the detector and the memory respectively, and the detector is electrically connected with the memory;
the signal receiver is used for receiving a second control signal sent by the seismic source excitation device, sending the second control signal to the detector, receiving current position information and current time information sent by the seismic source excitation device, and sending the current position information and the current time information to the memory;
the detector is used for acquiring seismic data after receiving the second control signal and sending the seismic data to the memory;
the memory is used for storing the current position information, the current time information and the acquired seismic data;
the seismic data acquisition method comprises the following steps:
if a vibration sensor in the seismic source excitation device senses that external vibration is larger than a preset vibration threshold value, respectively sending a first control signal to a locator and a timer in the seismic source excitation device;
if the locator receives the first control signal, current position information is obtained and sent to a signal transmitter in the seismic source excitation device;
if the timer receives the first control signal, current time information is obtained and sent to the signal transmitter;
if the signal transmitter receives the current position information and the current time information, a second control signal is sent to a ground seismic data acquisition device;
and if the ground seismic data acquisition device receives the second control signal, acquiring seismic data.
Further, the seismic data acquisition method of the seismic data acquisition system further includes:
and if the seismic data acquisition is judged to be finished, controlling the positioner to acquire current position information so as to recover the seismic source excitation device according to the current position information.
According to the seismic data acquisition method of the seismic data acquisition system, provided by the embodiment of the invention, the seismic sensor, the positioner, the timer and the signal emitter are arranged in the shell of the seismic source excitation device, so that when the seismic source excitation device collides with the ground, namely, an artificial earthquake is excited, a series of signals are generated to finally control the ground seismic data acquisition device to acquire seismic data, the seismic source excitation and the seismic data acquisition are synchronously carried out, and the accuracy of seismic exploration results is further ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a seismic source excitation device according to an embodiment of the present invention;
fig. 2 is a flowchart of a seismic data acquisition method according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a seismic source excitation apparatus according to an embodiment of the present invention, and as shown in fig. 1, the apparatus includes:
a housing 1 in which a vibration sensor 11, a locator 12, a timer 13 and a signal emitter 14 are provided; wherein the content of the first and second substances,
the vibration sensor 11 is electrically connected with the positioner 12 and the timer 13 respectively, and both the positioner 12 and the timer 13 are electrically connected with the signal emitter 14;
the vibration sensor 11 is configured to send first control signals to the positioner 12 and the timer 13 respectively after sensing that external vibration is greater than a preset vibration threshold;
the locator 12 is configured to obtain current position information after receiving the first control signal, and send the current position information to the signal transmitter 14;
the timer 13 is configured to obtain current time information after receiving the first control signal, and send the current time information to the signal transmitter 14;
the signal transmitter 14 is configured to send a second control signal to the ground seismic data acquisition device after receiving the current position information and the current time information, so that the ground seismic data acquisition device performs seismic data acquisition after receiving the second control signal.
Specifically, a seismic source launched to the ground in the air by an unmanned aerial vehicle is also used as the seismic source excitation device in the embodiment of the invention, and the device can generate strong collision with the ground when falling to the ground, so that an artificial earthquake is excited.
In order to ensure synchronization of seismic source excitation and seismic data acquisition, a vibration sensor, a locator, a timer and a signal emitter are arranged in a shell of the seismic source excitation device provided by the embodiment of the invention. The vibration sensor is an instrument capable of sensing the magnitude of external vibration, and when the sensed external vibration is larger than a preset vibration threshold value, the positioner and the timer are controlled to start working.
It should be noted that the preset vibration threshold is set according to actual conditions, and as long as the external vibration sensed by the vibration sensor is greater than the preset vibration threshold, it is considered that the seismic source excitation device collides with the ground, that is, the artificial earthquake is excited.
The vibration sensor controls the positioner and the timer to start working by sending a first control signal to the positioner and the timer. It is to be understood that, if the locator and the timer only start to operate at a high level, the first control signal may be a high level signal, which is merely an example of the first control signal, and the specific content of the embodiment of the present invention is not limited thereto.
The locator is activated, which means that it records the current position of the locator itself, and it is understood that since the locator is located in the source excitation device, the current position of the locator can also be considered as the current position of the source excitation device, i.e., the position at which the source excitation device is grounded.
Similarly, the timer is started, which means that the current time, i.e. the time when the seismic source excitation device is on the ground, is recorded.
And after the timer obtains the current time, the locator sends the current time to the signal transmitter.
And after receiving the current position information and the current time information sent by the locator, the signal transmitter controls the ground seismic data acquisition device to acquire seismic data. It should be noted that the signal transmitter controls the ground seismic data acquisition device to start operating by sending a second control signal to the ground seismic data acquisition device. It is to be understood that, if the ground seismic data acquisition device only starts to operate at a high level, the second control signal may be a high level signal, which is merely an example of the second control signal, and the specific content of the embodiment of the present invention is not limited thereto.
According to the seismic source excitation device provided by the embodiment of the invention, the vibration sensor, the positioner, the timer and the signal emitter are arranged in the shell, so that a series of signals are generated to finally control the ground seismic data acquisition device to acquire seismic data when the seismic source excitation device collides with the ground, namely, an artificial earthquake is excited, and therefore, the seismic source excitation and the seismic data acquisition are synchronously performed, and the accuracy of a seismic exploration result is further ensured.
Based on any of the above embodiments, the signal transmitter is further configured to send the current position information and the current time information to the ground seismic data acquisition device after receiving the current position information and the current time information, so that the ground seismic data acquisition device stores the current position information and the current time information.
Specifically, the signal transmitter not only transmits a second control signal for starting the operation of the ground seismic data acquisition device, but also transmits the current position acquired by the locator and the current time recorded by the timer to the ground seismic data acquisition device. This has the advantage of enabling the surface seismic data acquisition device to store a greater abundance of seismic survey related data in preparation for later data consolidation, i.e., survey analysis.
Based on any one of the above embodiments, the shell is further provided with a filler, and both the shell and the filler are shot-ball texture.
In particular, as can be seen from the above-described embodiments, the seismic source excitation device has a housing in which the shock sensor, the locator, the timer and the signal emitter are arranged, and a filler is arranged in the housing in a space other than the above-described instruments. The advantage of doing so is that the weight of whole seismic source excitation device increases for its collision with the ground is excited more, and then produces better excitation effect, obtains more accurate exploration result.
According to any one of the above embodiments, the shell is spherical or discoid; wherein the content of the first and second substances,
the shell is a spherical seismic source excitation device and is used for exciting reflected waves and refracted waves;
the shell is a circular cake-shaped seismic source excitation device and is used for exciting surface waves.
In particular, since seismic source excitation devices of different shapes can generate different types of seismic waves when colliding with the ground, in the embodiment of the invention, the shapes of the seismic source excitation devices can be set differently according to different exploration requirements. For example, the housing of the seismic source excitation device is arranged in a spherical shape to excite reflected waves and refracted waves, and for example, the housing of the seismic source excitation device is arranged in a pie shape to excite surface waves. It should be noted that the spherical shape and the pie shape are only two examples of the shell shape, and the shell shape is not particularly limited in the embodiment of the present invention.
Based on any of the above embodiments, the locator in the embodiments of the present invention is a GPS locator.
Based on any of the above embodiments, the communication mode of the signal transmitter in the embodiments of the present invention is wireless communication.
Based on any one of the embodiments, an embodiment of the present invention provides a seismic data acquisition system, including:
the seismic source excitation device and the ground seismic data acquisition device.
It should be noted that the seismic source excitation device has been described in detail in the above embodiments, and the description thereof is omitted.
Based on any one of the above embodiments, the ground seismic data acquisition device includes:
a signal receiver, a detector and a memory; wherein the content of the first and second substances,
the signal receiver is electrically connected with the detector and the memory respectively, and the detector is electrically connected with the memory;
the signal receiver is used for receiving a second control signal sent by the seismic source excitation device, sending the second control signal to the detector, receiving current position information and current time information sent by the seismic source excitation device, and sending the current position information and the current time information to the memory;
the detector is used for acquiring seismic data after receiving the second control signal and sending the seismic data to the memory;
and the memory is used for storing the current position information, the current time information and the acquired seismic data.
Based on any one of the above embodiments, an embodiment of the present invention provides a seismic data acquisition method based on the above seismic data acquisition device, and fig. 2 is a flowchart of the seismic data acquisition method provided by the embodiment of the present invention, and as shown in fig. 2, the method includes:
and step 205, if the ground seismic data acquisition device receives the second control signal, acquiring seismic data.
Specifically, the seismic data acquisition method provided by the embodiment of the present invention is specifically executed by the seismic data acquisition system, and details thereof are not repeated in the embodiment of the present invention. According to the device provided by the embodiment of the invention, the vibration sensor, the positioner, the timer and the signal emitter are arranged in the shell of the seismic acquisition device, so that a series of signals are generated to finally control the ground seismic data acquisition device to acquire seismic data when the seismic source excitation device collides with the ground, namely, an artificial earthquake is excited, and therefore, the synchronous execution of seismic source excitation and seismic data acquisition is ensured, and the accuracy of seismic exploration results is further ensured.
Based on any one of the above embodiments, the seismic data acquisition method provided by the embodiment of the present invention further includes:
and if the seismic data acquisition is judged to be finished, controlling the positioner to acquire current position information so as to recover the seismic source excitation device according to the current position information.
Specifically, after seismic data acquisition is completed, the seismic source excitation device is positioned according to a GPS locator in the seismic source excitation device, the current position of the seismic source excitation device is determined, manual recovery is carried out, and reuse is achieved.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (2)
1. A seismic data acquisition method of a seismic data acquisition system, the seismic data acquisition system comprising: seismic source excitation device and ground seismic data acquisition device, this seismic source excitation device includes:
the device comprises a shell, a vibration sensor, a positioner, a timer and a signal emitter are arranged in the shell; wherein the content of the first and second substances,
the vibration sensor is respectively and electrically connected with the positioner and the timer, and the positioner and the timer are both electrically connected with the signal emitter;
the vibration sensor is used for respectively sending first control signals to the positioner and the timer after sensing that external vibration is larger than a preset vibration threshold value;
the locator is used for acquiring current position information after receiving the first control signal and sending the current position information to the signal transmitter;
the timer is used for acquiring current time information after receiving the first control signal and sending the current time information to the signal emitter;
the signal transmitter is used for transmitting a second control signal to the ground seismic data acquisition device after receiving the current position information and the current time information, so that the ground seismic data acquisition device acquires seismic data after receiving the second control signal;
the ground seismic data acquisition device comprises:
a signal receiver, a detector and a memory; wherein the content of the first and second substances,
the signal receiver is electrically connected with the detector and the memory respectively, and the detector is electrically connected with the memory;
the signal receiver is used for receiving a second control signal sent by the seismic source excitation device, sending the second control signal to the detector, receiving current position information and current time information sent by the seismic source excitation device, and sending the current position information and the current time information to the memory;
the detector is used for acquiring seismic data after receiving the second control signal and sending the seismic data to the memory;
the memory is used for storing the current position information, the current time information and the acquired seismic data;
the seismic data acquisition method comprises the following steps:
if a vibration sensor in the seismic source excitation device senses that external vibration is larger than a preset vibration threshold value, respectively sending a first control signal to a locator and a timer in the seismic source excitation device;
if the locator receives the first control signal, current position information is obtained and sent to a signal transmitter in the seismic source excitation device;
if the timer receives the first control signal, current time information is obtained and sent to the signal transmitter;
if the signal transmitter receives the current position information and the current time information, a second control signal is sent to a ground seismic data acquisition device;
and if the ground seismic data acquisition device receives the second control signal, acquiring seismic data.
2. The seismic data acquisition method of claim 1, further comprising:
and if the seismic data acquisition is judged to be finished, controlling the positioner to acquire current position information so as to recover the seismic source excitation device according to the current position information.
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