CN112946747A - Synchronous verification method for wired instrument and vibroseis - Google Patents
Synchronous verification method for wired instrument and vibroseis Download PDFInfo
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- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/28—Processing seismic data, e.g. for interpretation or for event detection
- G01V1/36—Effecting static or dynamic corrections on records, e.g. correcting spread; Correlating seismic signals; Eliminating effects of unwanted energy
- G01V1/37—Effecting static or dynamic corrections on records, e.g. correcting spread; Correlating seismic signals; Eliminating effects of unwanted energy specially adapted for seismic systems using continuous agitation of the ground, e.g. using pulse compression of frequency swept signals for enhancement of received signals
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- G01V1/28—Processing seismic data, e.g. for interpretation or for event detection
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- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/28—Processing seismic data, e.g. for interpretation or for event detection
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Abstract
The invention provides a synchronous verification method of a wired instrument and a vibroseis, which comprises the following steps: the same signal source is used for adjusting the parameters of a plurality of wireless acquisition devices to be consistent; deploying wireless acquisition equipment to a vibroseis and a seismic instrument, and receiving a GPS time service signal; starting a controllable seismic source and a seismic instrument to perform production operation; in the production operation process, the wireless acquisition equipment acquires a test signal and correspondingly records the GPS time when the test signal is acquired; and carrying out synchronous verification according to the test signal and the GPS time. In the normal production process of the vibroseis based on the GPS time, the invention continuously acquires test data and synchronously verifies the wired instrument and the vibroseis; the method of the embodiment of the invention does not need to occupy the arrangement in production, does not need to select a test field, does not interrupt the normal production acquisition process of the instrument, and can greatly save the time for efficiently acquiring the project.
Description
Technical Field
The invention relates to the technical field of petroleum geological exploration, in particular to a synchronous verification method of a wired instrument and a controllable seismic source.
Background
At present, a synchronous verification method of a wired instrument and a controllable seismic source commonly adopted in the petroleum geophysical prospecting industry is a wired consistency test.
The principle of the wired consistency test is that the characteristic signal of the controllable seismic source is connected with the ground acquisition equipment of the instrument through a special cable, the instrument starts the seismic source and records the signals through the acquisition equipment, and meanwhile, the reference signal and the TB signal of the encoder of the instrument are recorded through an auxiliary channel and form a data file together with the recorded characteristic signal of the seismic source for analysis.
The wired consistency test method needs to stop the seismic data acquisition operation and switch into a test mode, and uses a cable to connect the controllable seismic source and the ground acquisition equipment, so that effective acquisition and production time is occupied to finish the test. When the test cannot be passed due to poor terrain and high distortion, the test site needs to be reselected, the arrangement is disconnected, the cable is reeled and reeled, the test is carried out again, even the shutdown and the gun stopping of a seismic team are caused, and a large amount of production time is lost. Under the current situation that a large number of projects in the industry adopt high-efficiency acquisition technology for construction, the loss of mass production time means huge economic loss.
Disclosure of Invention
The embodiment of the invention provides a synchronous verification method of a wired instrument and a vibroseis, which can be used for synchronously verifying the wired instrument and the vibroseis under the condition that the vibroseis does not stop, and comprises the following steps:
the same signal source is used for adjusting the parameters of a plurality of wireless acquisition devices to be consistent;
deploying wireless acquisition equipment to a vibroseis and a seismic instrument, and receiving a GPS time service signal;
starting a controllable seismic source and a seismic instrument to perform production operation;
in the production operation process, the wireless acquisition equipment acquires a test signal and correspondingly records the GPS time when the test signal is acquired;
and carrying out synchronous verification according to the test signal and the GPS time.
The embodiment of the invention provides a synchronous verification method of a wired instrument and a vibroseis, which comprises the steps of firstly using the same signal source, adjusting parameters of a plurality of wireless acquisition devices to be consistent, then deploying the adjusted wireless devices to the vibroseis and the seismic instrument, recording GPS time by receiving GPS time signals, continuously acquiring test data in the normal production process of the vibroseis based on the GPS time, and synchronously verifying the wired instrument and the vibroseis; the method of the embodiment of the invention does not need to occupy the arrangement in production, does not need to select a test field, does not interrupt the normal production acquisition process of the instrument, and can greatly save the time for efficiently acquiring the project.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts. In the drawings:
fig. 1 is a schematic diagram illustrating a method for synchronously verifying a wired instrument and a vibroseis according to an embodiment of the present invention.
Fig. 2 is a flowchart of a method for synchronously verifying a wired instrument and a vibroseis 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 more apparent, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
As shown in fig. 1, an embodiment of the present invention is a schematic diagram of a method for synchronously verifying a wired instrument and a vibroseis, and an embodiment of the present invention provides a method for synchronously verifying a wired instrument and a vibroseis, which can perform synchronous verification of a wired instrument and a vibroseis without stopping the vibroseis, and includes:
step 101: the same signal source is used for adjusting the parameters of a plurality of wireless acquisition devices to be consistent;
step 102: deploying wireless acquisition equipment to a vibroseis and a seismic instrument, and receiving a GPS time service signal;
step 103: starting a controllable seismic source and a seismic instrument to perform production operation;
step 104: in the production operation process, the wireless acquisition equipment acquires a test signal and correspondingly records the GPS time when the test signal is acquired;
step 105: and carrying out synchronous verification according to the test signal and the GPS time.
In the synchronous verification method for the wired instrument and the controllable seismic source, provided by the embodiment of the invention, in the normal production process of the controllable seismic source based on the GPS time, test data are uninterruptedly acquired, and the synchronous verification of the wired instrument and the controllable seismic source is carried out; the method of the embodiment of the invention does not need to occupy the arrangement in production, does not need to select a test field, does not interrupt the normal production acquisition process of the instrument, and can greatly save the time for efficiently acquiring the project.
The principle of the wired consistency test is that the characteristic signals of the controllable seismic source, which generally comprise a reference signal, a TB signal, a ground force signal, a heavy hammer acceleration signal and a flat acceleration signal, are connected with instrument ground acquisition equipment through a special cable, the instrument starts the seismic source and records the signals through the acquisition equipment, and meanwhile, the reference signal and the TB signal of an instrument encoder are recorded through an auxiliary channel and form a data file together with the recorded seismic source characteristic signals for analysis.
The wired consistency test has the advantages that the following contents can be comprehensively and effectively verified: 1. the instrument acquires the synchronization of the starting time and the starting time of the controllable seismic source; 2. synchronization of starting time among different controllable seismic sources; 3. the starting precision of the controllable seismic source electric control box body is improved; 4. controllable seismic source control system and mechanical system performance.
The method has the advantages that the defects are obvious, the wired consistency test method needs to stop the seismic data acquisition operation and switch into a test mode, and a cable is used for connecting the controllable seismic source and the ground acquisition equipment, so that the effective acquisition production time is occupied to finish the test. When the test cannot be passed due to poor terrain and high distortion, the test site needs to be reselected, the arrangement is disconnected, the cable is reeled and reeled, the test is carried out again, even the shutdown and the gun stopping of a seismic team are caused, and a large amount of production time is lost. Under the current situation that a large number of projects in the industry adopt high-efficiency acquisition technology for construction, the loss of mass production time means huge economic loss.
The conventional mainstream vibroseis electric control box body already supports a characteristic signal local storage technology, and the characteristic signal can be conveniently stored in a box body memory or external equipment. The performance of the vibroseis control system and the mechanical system can be verified by analyzing the locally stored characteristic signals, so that the aspect is no longer the key point of synchronous verification of a wired instrument and a vibroseis.
With the wide application of the GPS time service technology and the development of the acquisition equipment, the synchronization of the acquisition starting time of the verification instrument and the starting time of the controllable seismic source and the starting precision of the electric control box body of the controllable seismic source are verified, and the possibility of not depending on ground wired acquisition equipment and not interrupting production is provided. After the two are verified, the starting time synchronization among different controllable seismic sources can be compared and verified by using an instrument as a reference.
Based on the above reasons, an embodiment of the present invention provides a method for synchronously verifying a wired instrument and a vibroseis, including: the same signal source is used for adjusting the parameters of a plurality of wireless acquisition devices to be consistent; deploying wireless acquisition equipment to a vibroseis and a seismic instrument, and receiving a GPS time service signal; starting a controllable seismic source and a seismic instrument to perform production operation; in the production operation process, the wireless acquisition equipment acquires a test signal and correspondingly records the GPS time when the test signal is acquired; and carrying out synchronous verification according to the test signal and the GPS time.
The reason for using a cable connection for the wired conformance test is due to the following two points: firstly, the transmission of the characteristic signal of the controllable seismic source and the signal of the instrument encoder in the cable can be considered to be delay-free, and a uniform scale is provided for comparing the phases of the characteristic signal of the controllable seismic source and the signal of the instrument encoder to determine the difference of starting time; secondly, the digital-to-analog conversion characteristic of the ground acquisition equipment through which the characteristic signal of the controllable seismic source passes is consistent with the digital-to-analog conversion characteristic of the auxiliary channel through which the reference signal of the instrument encoder passes, and unified scale is provided for analyzing indexes such as distortion between the characteristic signal of the controllable seismic source and the reference signal of the instrument encoder. The wireless acquisition equipment adopted by the technology of the embodiment of the invention also has to meet the two requirements.
In an embodiment of the method for synchronously verifying a wired instrument and a vibroseis, the method for synchronously verifying a wired instrument and a vibroseis determines that parameters of a plurality of wireless acquisition devices are consistent by using the same signal source, and includes:
and comparing the channels of the wireless acquisition equipment by using the same signal source, and determining that the GPS time scales of the wireless acquisition equipment are consistent with the channel circuit characteristics.
In a specific implementation of the method for synchronously verifying a wired instrument and a vibroseis provided in an embodiment of the present invention, in an embodiment, deploying a wireless acquisition device on the vibroseis includes:
the method comprises the steps of deploying the wireless acquisition equipment to a vibroseis, and transmitting a vibroseis characteristic signal of the vibroseis to a simulation input channel of the wireless acquisition equipment.
In an embodiment of the method for synchronously verifying the wired instrument and the vibroseis, the method for synchronously verifying the wired instrument and the vibroseis includes: the system comprises a TB signal, a reference signal and a force signal which are output by a controllable seismic source electric control box body.
In a specific implementation of the method for verifying synchronization between a wired instrument and a vibroseis provided in an embodiment of the present invention, in an embodiment, the deploying a wireless acquisition device to a seismic instrument includes:
deploying the wireless acquisition equipment to the seismic instrument, and transmitting the encoder characteristic signal of the seismic instrument to an analog input channel of the wireless acquisition equipment.
In an embodiment of the method for verifying synchronization between a wired instrument and a vibroseis according to an embodiment of the present invention, the encoder feature signal includes: a reference signal of the encoder and a TB signal.
In a specific implementation of the method for synchronously verifying the wired instrument and the vibroseis provided in the embodiment of the present invention, in an embodiment, the acquiring of the test signal by the wireless acquisition device includes: the wireless acquisition equipment amplifies, filters and converts the acquired test signals into digital test signals.
In a specific implementation of the method for synchronously verifying a wired instrument and a vibroseis provided in an embodiment of the present invention, after acquiring a test signal and recording a GPS time, the method further includes: and storing and exporting the acquired test signal according to the GPS time.
In an embodiment of the method for synchronously verifying a wired instrument and a vibroseis, the method for synchronously verifying a wired instrument and a vibroseis according to the embodiment of the present invention includes: and (4) screening the test signals by combining the PSS report recorded by the seismic instrument and the VAPS file, and exporting the screened test signals according to a SegD format or a SegY format.
In a specific implementation of the method for synchronously verifying a wired instrument and a vibroseis provided in an embodiment of the present invention, in an embodiment, the method for synchronously verifying according to a test signal and a GPS time includes:
dividing the test signal into a set length according to a GPS time interval;
and synthesizing the segmented test signals with the same GPS time interval according to a set sequence to form a data file, and performing synchronous verification.
The embodiment of the present invention further provides an example of performing a consistency test by using the method for synchronously verifying the wired instrument and the vibroseis, as shown in the flow chart of the method for synchronously verifying the wired instrument and the vibroseis in the embodiment of the present invention in fig. 2,
1. selecting wireless acquisition equipment meeting the requirements of the method, such as wireless node equipment commonly used in the field at present;
2. the same signal source is used for comparing all channels of all the wireless acquisition equipment which are put into use, the recorded GPS time scales are confirmed to be consistent, and the circuit characteristics of all the channels are confirmed to be consistent;
3. deploying a wireless acquisition device on a vibroseis, connecting a required vibroseis characteristic signal to a simulation input channel of the wireless acquisition device, and confirming that the acquisition device normally acquires a GPS time service signal;
4. deploying a wireless acquisition device on a seismic instrument, connecting a reference signal and a TB signal of a required encoder to an analog input channel of the wireless acquisition device, and confirming that the acquisition device normally acquires a GPS signal;
5. normally carrying out seismic exploration, acquisition and production operation, wherein in the production process, the wireless acquisition equipment continuously records required test signals and records GPS time when the test signals are acquired;
6. after a certain time (usually depending on the construction condition), the recorded test signals are exported by the data interface, and are segmented and synthesized according to the GPS time to form data files, and the data files are screened by combining with PSS reports or VAPS files recorded by an instrument and then are used for analysis;
7. the synchronous verification of a plurality of controllable seismic sources and wired instruments can be carried out by putting a plurality of wireless acquisition devices into the system or carrying out the verification in batches.
8. Because the test result can be obtained only after exporting, segmenting, synthesizing and screening, the real-time performance is slightly reduced, and the effective coverage of synchronous verification can be ensured by shortening the test period or increasing test data for analysis.
At present, part of projects are selected, wireless node equipment is used as acquisition equipment, vibroseis characteristic signals are recorded, and the vibroseis characteristic signals are segmented according to GPS time and then combined with reference signals recorded in auxiliary channels by an instrument to form a data file for analysis.
The wireless acquisition equipment adopting the wireless node technology can meet the requirements of the patent technology of the embodiment of the invention on the wireless acquisition equipment, and the analog-to-digital conversion characteristic of the wireless acquisition equipment is generally consistent with that of the wired acquisition equipment used in cooperation. Therefore, the node is used for recording the characteristic signal of the controllable seismic source, and the characteristic signal is directly compared and analyzed with the reference signal recorded by the instrument through the auxiliary channel, so that the effect same as that of a wired consistency test is achieved through verification, and meanwhile, the feasibility of the technology of the embodiment of the invention is verified.
The wireless acquisition device adopted by the embodiment of the invention can comprise:
the GPS time service system comprises an input interface, a GPS time service module, a controller, an output interface and a memory;
the input interface, the output interface, the GPS time service module and the memory are respectively connected with the controller;
the input interface is used for receiving the vibroseis characteristic signal and the instrument coding characteristic signal;
the GPS time service module is used for receiving GPS signals and recording GPS time;
the controller is used for storing the received vibroseis characteristic signals and instrument coding characteristic signals into the memory according to the GPS time;
the memory is used for storing the vibroseis characteristic signal, the instrument coding characteristic signal and the GPS time;
and the output interface is used for outputting the vibroseis characteristic signal, the instrument coding characteristic signal and the GPS time.
The wireless acquisition equipment provided by the embodiment of the invention also comprises data synthesis software which is used in a matched manner and is used for synthesizing the data acquired by different equipment.
The wireless acquisition equipment provided by the embodiment of the invention acquires the GPS time through the GPS time service module, records the vibroseis characteristic signal and the instrument coding characteristic signal on the basis of the GPS time, does not need to occupy the arrangement for production, does not need to select a test field, does not interrupt the normal production acquisition process of the instrument, and can be a synchronous verification method for the wired instrument and the vibroseis, which is adapted to the embodiment of the invention.
The wireless acquisition equipment adopted by the embodiment of the invention has the following characteristics:
1) the GPS time service function is provided, and the time service precision can reach the sampling precision of an instrument or higher; 2) the analog-to-digital conversion circuit is provided with at least three analog input interfaces for accessing required signals, and the analog-to-digital conversion characteristics of all channels are required to be consistent; 3) the method has a continuous recording function, and has no interruption and no data loss in recording; 4) having the function of recording the accurate GPS time in the collected data; 5) the device is provided with a convenient input and output interface, and data can be conveniently exported; 6) the data segmentation software is easy to operate, and can segment data according to GPS time; 7) the data synthesis software is easy to operate, and can synthesize data collected by different devices.
The invention provides a new basis and means for synchronous verification of wired instruments and controllable seismic sources for efficiently acquiring seismic exploration projects at home and abroad. According to the general situation estimation of the current high-efficiency acquisition project, each controlled seismic source/group is synchronously tested every time, the effective acquisition time can be saved by 1 hour on average, and the created economic benefit is very great by combining the large number of seismic sources of the high-efficiency acquisition project and the huge production pressure. The technology is the most scientific, efficient and strong-operability synchronous verification technology for the wired instrument and the controllable seismic source in the petroleum exploration industry, and meets the technical development requirements of efficient petroleum geological exploration methods.
To sum up, according to the synchronous verification method for the wired instrument and the controllable seismic source provided by the embodiment of the invention, firstly, the same signal source is used, the parameters of a plurality of wireless acquisition devices are adjusted to be consistent, then the adjusted wireless devices are deployed on the controllable seismic source and the seismic instrument, the GPS time is recorded by receiving a GPS time signal, and in the normal production process of the controllable seismic source based on the GPS time, test data are continuously acquired to perform synchronous verification on the wired instrument and the controllable seismic source; the method of the embodiment of the invention does not need to occupy the arrangement in use of production, does not need to select a test field, does not interrupt the normal production acquisition process of the instrument, does not need to stop working and stopping cannon, does not occupy effective acquisition time, and can greatly save the time for efficiently acquiring projects. The invention is a scientific, efficient and strong-operability wired instrument and controllable seismic source synchronous verification method in the petroleum exploration industry, and meets the technical development requirements of efficient petroleum geological exploration methods such as sliding scanning, dynamic sliding scanning, mixed mining and the like.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A method for synchronously verifying a wired instrument and a vibroseis is characterized by comprising the following steps:
the same signal source is used for adjusting the parameters of a plurality of wireless acquisition devices to be consistent;
deploying wireless acquisition equipment to a vibroseis and a seismic instrument, and receiving a GPS time service signal;
starting a controllable seismic source and a seismic instrument to perform production operation;
in the production operation process, the wireless acquisition equipment acquires a test signal and correspondingly records the GPS time when the test signal is acquired;
and carrying out synchronous verification according to the test signal and the GPS time.
2. The method of claim 1, wherein determining that the plurality of wireless acquisition device parameters are consistent using the same signal source comprises:
and comparing the channels of the wireless acquisition equipment by using the same signal source, and determining that the GPS time scales of the wireless acquisition equipment are consistent with the channel circuit characteristics.
3. The method of claim 1, wherein deploying a wireless acquisition device to a vibroseis comprises:
the method comprises the steps of deploying the wireless acquisition equipment to a vibroseis, and transmitting a vibroseis characteristic signal of the vibroseis to a simulation input channel of the wireless acquisition equipment.
4. The method of claim 3, wherein the vibroseis signature comprises: the system comprises a TB signal, a reference signal and a force signal which are output by a controllable seismic source electric control box body.
5. The method of claim 1, wherein deploying a wireless acquisition device onto a seismic instrument comprises:
deploying the wireless acquisition equipment to the seismic instrument, and transmitting the encoder characteristic signal of the seismic instrument to an analog input channel of the wireless acquisition equipment.
6. The method of claim 5, wherein the encoder characterization signal comprises: a reference signal of the encoder and a TB signal.
7. The method of claim 1, wherein the wireless acquisition device acquires a test signal, comprising: the wireless acquisition equipment amplifies, filters and converts the acquired test signals into digital test signals.
8. The method of claim 1, after collecting the test signal and recording GPS time, further comprising: and storing and exporting the acquired test signal according to the GPS time.
9. The method of claim 8, wherein deriving the collected test signal comprises: and screening the test signals by combining the PSS report recorded by the seismic instrument and the VAPS file, and exporting the screened test signals according to a SegD format or a SegY format.
10. The method of claim 1, wherein performing synchronization verification based on the test signal and GPS time of day comprises:
dividing the test signal into a set length according to a GPS time interval;
and synthesizing the segmented test signals with the same GPS time interval according to a set sequence to form a data file, and performing synchronous verification.
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