CN109212606A - Method for marine seismic data earth surface consistency vibration amplitude compensation processing method and system - Google Patents
Method for marine seismic data earth surface consistency vibration amplitude compensation processing method and system Download PDFInfo
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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
- G01V1/28—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
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Abstract
The invention proposes a kind of method for marine seismic data earth surface consistency vibration amplitude compensation processing method and systems, this method comprises: input data；Window design when distribution according to significant wave carries out；To given when window calculated amplitude statistical value；The amplitude statistical value is decomposed into different components；It is used for the component after decomposition to compensate aqueduct, to per calculating and the application percentage factor together；Data after exporting earth surface consistency vibration amplitude compensation.Since the present invention is according to offshore seismic exploration data collection construction characteristic, it is the main processing domain of marine earth surface consistency vibration amplitude compensation with common-source point and altogether instrument channel processing domain, therefore after compensated processing, the amplitude of any given shot point, instrument channel should be consistent with the amplitude level of other shot points, instrument channel, it can get ideal amplitude uniformity treatment effect, there is good application prospect.
Description
Technical field
The invention belongs to the process fields of geophysical exploration seismic data, and in particular to the ground in method for marine seismic data processing
The method and system of table consistency amplitude compensation processing, invention can be applied to the data of two dimension, three-dimensional offshore oil and gas seismic prospecting
Processing.
Background technique
Seismic prospecting data processing is in order to guarantee that high fidelity processing requirement is achieved, in addition to using spherical diffusion and suction
Receipts compensation is outer, also needs to solve using earth surface consistency vibration amplitude compensation technology because of surface geology condition or excitation, condition of acceptance difference
Caused by energy lack of uniformity between the road Bao Jianhuo, this is the effective means for realizing energy coincidence.
Conventional land earth surface consistency vibration amplitude compensation processing method is main in order that offset data body is by shot point, geophone station
Amplitude difference caused by the difference (including the factors such as excitation well depth, dose, lithology, wave detector embedding coupling) of (see Fig. 1), because adopting
Collect form of construction work and surface layer condition difference, which can be not applied directly in the processing of offshore seismic exploration data.
Marine streamer seismic prospecting is constructed when the depth of water is greater than 3~5m using seismic work ship, and activating system uses multiple gun
Air gun excitation receives system and uses piezoelectric seismometer, needs to be fixed on marine streamer by different, and workboat guides towing cable to press and surveys
Line direction is advanced, and side traveling, side excitation, the received working method in side are formed.
The earth's surface in similar land seismic exploration data processing is not used in offshore seismic exploration data processing at present generally
Consistency amplitude compensation technology, it is believed that the excitation of offshore seismic exploration data collection receives all in water, and earth's surface-consistent is very
It is good, it is not required to do earth surface consistency vibration amplitude compensation processing.But actual conditions are: in certain offshore seismic exploration data, due to can
There can be the reasons such as the excitation of multiple gun air gun is asynchronous or incomplete, piezoelectric seismometer performance is inconsistent, there is also more serious originals
The inconsistent situation of beginning data amplitude, leading to the hi-fi of amplitude degree of some offshore seismic exploration data processing achievement is not to manage very much
Think.
Summary of the invention
The purpose of the invention patent is that meet the needs of offshore seismic exploration data amplitude uniformity processing, improves marine ground
The fidelity of seismic data processing achievement provides reliable basic data for data interpretation, and then improves the success rate of exploration and development.
According to an aspect of the present invention, a kind of method for marine seismic data earth surface consistency vibration amplitude compensation processing method is provided,
This method comprises:
Input data；
Window design when distribution according to significant wave carries out；
To given when window calculated amplitude statistical value；
The amplitude statistical value is decomposed into different components；
It is used for the component after decomposition to compensate aqueduct, to per calculating and the application percentage factor together；
Data after exporting earth surface consistency vibration amplitude compensation.
Further, when window design before further comprise data prediction step.
Further, amplitude statistical value is RMS amplitude statistical value or mean amplitude of tide statistical value.
It further, include decomposing the amplitude statistical value earth's surface-consistent altogether by amplitude statistical value decomposition
Shot point, altogether instrument channel and offset gather component.
Further, the scale factor is the square of all earth's surface-consistent shot points, instrument channel and offset gather
The ratio of the RMS amplitude of root amplitude and single shot point, instrument channel and offset gather.
According to another aspect of the present invention, a kind of method for marine seismic data earth surface consistency vibration amplitude compensation processing system is provided,
The system includes:
Memory is stored with computer executable instructions；
Processor, the processor run the computer executable instructions in the memory, execute following steps:
Input data；
Window design when distribution according to significant wave carries out；
To given when window calculated amplitude statistical value；
The amplitude statistical value is decomposed into different components；
It is used for the component after decomposition to compensate aqueduct, to per calculating and the application percentage factor together；
Data after exporting earth surface consistency vibration amplitude compensation.
Since the present invention is according to offshore seismic exploration data collection construction characteristic, domain is handled with common-source point and total instrument channel
For the main processing domain of marine earth surface consistency vibration amplitude compensation, therefore after compensated processing, any given shot point, instrument channel
Amplitude should be consistent with the amplitude level of other shot points, instrument channel, can get ideal amplitude uniformity treatment effect,
There is good application prospect.
Detailed description of the invention
Disclosure illustrative embodiments are described in more detail in conjunction with the accompanying drawings, the disclosure above-mentioned and its
Its purpose, feature and advantage will be apparent, wherein in disclosure illustrative embodiments, identical reference label
Typically represent same parts.
Fig. 1 shows 2 dimension layout charts, is marine, land earth surface consistency vibration amplitude compensation different disposal domain signal
Figure.
Fig. 2 shows the method for marine seismic data earth surface consistency vibration amplitude compensation process flow diagrams of the embodiment of the present invention.
Specific embodiment
The preferred embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Preferred embodiment, however, it is to be appreciated that may be realized in various forms the disclosure without the embodiment party that should be illustrated here
Formula is limited.On the contrary, these embodiments are provided so that this disclosure will be more thorough and complete, and can be by the disclosure
Range is completely communicated to those skilled in the art.
The invention belongs to geophysical exploration seism processing fields, and in particular to two dimension, three-dimensional offshore oil and gas earthquake are surveyed
Earth surface consistency vibration amplitude compensation processing in the processing of spy data.
Marine streamer seismic prospecting reception arrangement is mobile with shot point, in the collection process of entire initial data, each big gun record
The record of certain sequence Taoist monastic name be to immobilize from certain instrument channel always.If the corresponding piezoelectricity detection of certain instrument channel
Device is problematic, then will affect the record data amplitudes of the entire instrument channel；If the excitation of multiple gun air gun is asynchronous or incomplete
It will affect the record data amplitudes of whole big gun.
The present invention is directed to the marine earth surface consistency vibration amplitude compensation technological difficulties to be solved, and utilizes marine streamer seismic prospecting
It is mobile with shot point to receive arrangement, in the collection process of entire initial data, the record of certain sequence Taoist monastic name of each big gun record is always
From certain instrument channel, the characteristics of immobilizing.The marine earth's surface one based on common-source point and total instrument channel processing domain is invented
Cause property vibration amplitude compensation method, marine earth surface consistency vibration amplitude compensation processing in order that offset data body by shot point, instrument channel
Amplitude difference caused by difference can get good earth surface consistency vibration amplitude compensation effect through the technical treatment.
The present disclosure proposes a kind of method for marine seismic data earth surface consistency vibration amplitude compensation processing methods, this method comprises:
Input data；
Window design when distribution according to significant wave carries out；
To given when window calculated amplitude statistical value；
The amplitude statistical value earth's surface-consistent is decomposed to common-source point, altogether instrument channel and offset gather component；
It is used for the component after decomposition to compensate aqueduct, to per calculating and the application percentage factor together；
Data after exporting earth surface consistency vibration amplitude compensation.
Preferably, when window design before further comprise data prediction step, necessary pretreatment is carried out to data,
Such as data, elimination of burst noise, filtering with predominant frequency band processing after true amplitude recovery etc..
Further, amplitude statistical value can be RMS amplitude statistical value or mean amplitude of tide statistical value.
It further, include decomposing the amplitude statistical value earth's surface-consistent altogether by amplitude statistical value decomposition
Shot point, altogether instrument channel and offset gather component.
Further, the scale factor is the square of all earth's surface-consistent shot points, instrument channel and offset gather
The ratio of the RMS amplitude of root amplitude and single shot point, instrument channel and offset gather.
According to another aspect of the present invention, a kind of method for marine seismic data earth surface consistency vibration amplitude compensation processing system is provided,
The system includes:
Memory is stored with computer executable instructions；
Processor, the processor run the computer executable instructions in the memory, execute following steps:
Input data；
Window design when distribution according to significant wave carries out；
To given when window calculated amplitude statistical value；
The amplitude statistical value is decomposed into different components；
It is used for the component after decomposition to compensate aqueduct, to per calculating and the application percentage factor together；
Data after exporting earth surface consistency vibration amplitude compensation.
A concrete application example is given below in the scheme and its effect of the embodiment of the present invention for ease of understanding.This field
It should be understood to the one skilled in the art that the example is only for the purposes of understanding the present invention, any detail is not intended to be limited in any way
The system present invention.
The process flow that this method is realized is as shown in Fig. 2, the method for the present embodiment realizes that steps are as follows:
1, the data for preparing processing input data: are input to instrument.
2, timely window design: window design when carrying out necessary pretreatment, and carrying out according to the distribution of significant wave is pre-processed.Example
Such as, window is online when the principle that window designs when may is that is generally located under preliminary wave, on effective reflection；It is offline generally to set
Under the main purpose layer back wave of exploration area.
3, RMS amplitude or mean amplitude of tide statistical value calculated amplitude statistical value: are calculated to given when window.
4, statistical value decomposes: the calculated amplitude statistical value earth's surface-consistent of upper step is decomposed to common-source point domain, altogether instrument
Device channel region and offset gather domain.Similar with land earth surface consistency vibration amplitude compensation processing, land is to calculate upper step
Amplitude statistical value earth's surface-consistent decompose common-source point domain, common receiver domain and offset gather domain；And marine earth's surface
" common receiver domain " has only been changed into " be total to instrument channel domain " by the processing of consistency amplitude compensation, all because of instrument channel and geophone station
It is the common trace header information in seismic prospecting processing data, is included in trace header, the method and land point that sea processing is decomposed
Solution method is the same.
5, component application: being used for the component that upper step obtains to compensate aqueduct, to per calculating and the application percentage factor together.
In the present embodiment, scale factor be all earth's surface-consistent shot points, instrument channel and offset gather RMS amplitude with
The ratio of the RMS amplitude of single shot point, instrument channel and offset gather.For example, calculation method as land, is united
The decomposition data of meter is used to calculate the balance factor of the shot point of earth's surface-consistent, instrument channel and offset gather.By applying S
The scale factor appropriate of T M/Si Tj Mn carries out scale operation to seismic channel.Here, S, T and M are shot point, instrument channel
With the geometric average for respectively working as leading portion of offset distance component.
6, output data: opposite guarantor's width data after output earth surface consistency vibration amplitude compensation.
Since the present invention is according to offshore seismic exploration data collection construction characteristic, domain is handled with common-source point and total instrument channel
For the main processing domain of marine earth surface consistency vibration amplitude compensation, therefore after compensated processing, any given shot point, instrument channel
Amplitude should be consistent with the amplitude level of other shot points, instrument channel, can get ideal amplitude uniformity treatment effect,
There is good application prospect.
The presently disclosed embodiments is described above, above description is exemplary, and non-exclusive, and
It is not limited to disclosed each embodiment.Without departing from the scope and spirit of illustrated each embodiment, for this skill
Many modifications and changes are obvious for the those of ordinary skill in art field.The selection of term used herein, purport
In the principle, practical application or technological improvement to the technology in market for best explaining each embodiment, or lead this technology
Other those of ordinary skill in domain can understand each embodiment disclosed herein.
Claims (10)
1. a kind of method for marine seismic data earth surface consistency vibration amplitude compensation processing method, which is characterized in that this method comprises:
Input data；
Window design when distribution according to significant wave carries out；
To given when window calculated amplitude statistical value；
The amplitude statistical value is decomposed into different components；
It is used for the component after decomposition to compensate aqueduct, to per calculating and the application percentage factor together；
Data after exporting earth surface consistency vibration amplitude compensation.
2. method for marine seismic data earth surface consistency vibration amplitude compensation processing method according to claim 1, which is characterized in that
When window design before further comprise data prediction step.
3. method for marine seismic data earth surface consistency vibration amplitude compensation processing method according to claim 1, which is characterized in that vibration
Width statistical value is RMS amplitude statistical value or mean amplitude of tide statistical value.
4. method for marine seismic data earth surface consistency vibration amplitude compensation processing method according to claim 1, which is characterized in that will
Amplitude statistical value decomposition includes that the amplitude statistical value earth's surface-consistent is decomposed to common-source point, altogether instrument channel and partially
It moves away from trace gather component.
5. method for marine seismic data earth surface consistency vibration amplitude compensation processing method according to claim 1, which is characterized in that ratio
The example factor is the RMS amplitude and single shot point, instrument of all earth's surface-consistent shot points, instrument channel and offset gather
The ratio of the RMS amplitude of channel and offset gather.
6. a kind of method for marine seismic data earth surface consistency vibration amplitude compensation processing system, which is characterized in that the system includes:
Memory is stored with computer executable instructions；
Processor, the processor run the computer executable instructions in the memory, execute following steps:
Input data；
Window design when distribution according to significant wave carries out；
To given when window calculated amplitude statistical value；
The amplitude statistical value is decomposed into different components；
It is used for the component after decomposition to compensate aqueduct, to per calculating and the application percentage factor together；
Data after exporting earth surface consistency vibration amplitude compensation.
7. method for marine seismic data earth surface consistency vibration amplitude compensation processing system according to claim 6, which is characterized in that
When window design before further comprise data prediction step.
8. method for marine seismic data earth surface consistency vibration amplitude compensation processing system according to claim 6, which is characterized in that vibration
Width statistical value is RMS amplitude statistical value or mean amplitude of tide statistical value.
9. method for marine seismic data earth surface consistency vibration amplitude compensation processing system according to claim 6, which is characterized in that will
Amplitude statistical value decomposition includes that the amplitude statistical value earth's surface-consistent is decomposed to common-source point, altogether instrument channel and partially
It moves away from trace gather component.
10. method for marine seismic data earth surface consistency vibration amplitude compensation processing system according to claim 6, which is characterized in that
Scale factor is the RMS amplitude and single shot point, instrument of all earth's surface-consistent shot points, instrument channel and offset gather
The ratio of the RMS amplitude of device channel and offset gather.
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Cited By (2)
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| CN113568042A (en) * | 2021-07-21 | 2021-10-29 | 中海石油(中国)有限公司 | Streamer acquisition method and system for improving repeatability of time-lapse seismic data |
| CN114779334A (en) * | 2022-03-30 | 2022-07-22 | 同济大学 | Earth surface consistency amplitude processing method based on statistical theory model |
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Cited By (3)
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| CN113568042A (en) * | 2021-07-21 | 2021-10-29 | 中海石油(中国)有限公司 | Streamer acquisition method and system for improving repeatability of time-lapse seismic data |
| CN113568042B (en) * | 2021-07-21 | 2024-01-26 | 中海石油(中国)有限公司 | Streamer acquisition method and system for improving repeatability of time-lapse seismic data |
| CN114779334A (en) * | 2022-03-30 | 2022-07-22 | 同济大学 | Earth surface consistency amplitude processing method based on statistical theory model |
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