CN202119921U - Quantitative analysis and evaluation system for seismic prospecting acquisition quality - Google Patents
Quantitative analysis and evaluation system for seismic prospecting acquisition quality Download PDFInfo
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- CN202119921U CN202119921U CN2011202419562U CN201120241956U CN202119921U CN 202119921 U CN202119921 U CN 202119921U CN 2011202419562 U CN2011202419562 U CN 2011202419562U CN 201120241956 U CN201120241956 U CN 201120241956U CN 202119921 U CN202119921 U CN 202119921U
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Abstract
A quantitative analysis and evaluation system for seismic prospecting acquisition quality comprises a digital seismograph, a workstation processor and a data processor, wherein the digital seismograph is taken as the signal acquisition terminal of the quantitative analysis and evaluation system for the seismic prospecting acquisition quality and is used for collecting seismic wave and converting the seismic wave into digital signals, the signal output terminal of the digital seismograph is connected with the signal input terminal of the workstation processor, the signal output terminal of the workstation processor is connected with the signal input terminal of the data processor, and the output terminals of the workstation processor and the data processor are respectively taken as the outputs of the quantitative analysis and evaluation system for the seismic prospecting acquisition quality and are used for outputting a seismic waveform image and seismic data quality parameters. The quantitative analysis and evaluation system provides scientific concrete digital basis for acquisition production parameter selection, provides accurate parameter index digital quantity for acquisition quality analysis and evaluation, can improve seismic acquisition data quality, and can improve the efficiency, precision, objectiveness and fairness of acquisition data acceptance and evaluation tasks.
Description
Technical field
The utility model relates to a kind of field of seismic exploration, especially in the field acquisition, and the analysis and evaluation system of instrument institute record material quality, specifically a kind of seismic acquisition quality quantification analysis and evaluation system.
Background technology
In the field of seismic exploration; Usually adopt seismograph to gather seismic event; Obtain the deep layer geological information; The assay work of gathering data quality is mainly browsed the monitor record after the image data imaging through manual work, relies on analyst's personal experience and technical merit judge, provides assay result qualitatively.Have bigger artificial subjective factor and enchancement factor during qualitative analysis is estimated, analyst's technical experience is different, different to the understanding of technical manual, and the evaluation result of same data is often differed greatly.Can only provide such as qualitative descriptions such as " energy are strong, frequency higher " for the major parameter index evaluation of acquisition quality, can't provide the concrete numerical value and the shared number percent of parameter index.
Still none overlaps complete seismic acquisition quality quantification analysis and evaluation system both at home and abroad at present; Only develop analytical calculation software to the single parameter item; But there are deficiencies such as precision is low, the scope of application is little, parameter item is not enough, the form of expression is single, bring difficulty and misleading often for the work of acquisition quality assay.
Summary of the invention
The purpose of the utility model be at present for seismograph institute acquisition parameter usually by the manual work evaluation, can't provide quantitative evaluation result's problem, a kind of seismic acquisition quality quantification analysis and evaluation system is proposed.This system can not only be through each parameter index concrete numerical value accurate comprehensively the collection data quality must be described, can also various ways be directly perceived must represent the data quality Changing Pattern with text, form, curve, picture etc.
The technical scheme of the utility model is:
A kind of seismic acquisition quality quantification analysis and evaluation system, it comprises digital seismograph, workstation processor and data processor; Described digital seismograph is gathered seismic event as the signals collecting end of seismic acquisition quality quantification analysis and evaluation system; And be translated into digital signal; The digital signal output end of digital seismograph links to each other with the signal input part of workstation processor; The signal output part of workstation processor links to each other with the signal input part of data processor; The signal output part of workstation processor and data processor as the output of seismic acquisition quality quantification analysis and evaluation system, is exported seismic waveshape image and seismic event data quality parameter respectively.
Concatenated filter between digital seismograph of the utility model and the workstation processor.
The workstation processor of the utility model connects first display and plotting apparatus.
The data processor of the utility model connects second display and printer.
The beneficial effect of the utility model:
The utility model has overcome the defective that subjective one-sided is estimated in present acquisition quality qualitative analysis; Choose the concrete digit basis that science is provided for gathering manufacturing parameter; For the acquisition quality assay provides parameter index digital value accurately; The earthquake-capturing data quality be can improve, efficient, precision and justice that the collection data is checked and accepted appraisal improved.
1, quantitative test target (object) optimisation technique
Technological in the past: the analytic target of quantitative analysis tech and software was the geological data behind original earthquake data or the simple bandpass filtering in the past; Wherein not only comprise the stratum effective reflection; Also be doped with refraction wave, ground roll, tiltedly disturb and interference wave such as multiple reflection; Analysis result has been described the attributive character of the mixing ripple group of effective reflection and various interference waves; The parameter index of significant wave in the real surface terrain shake data fully, nature can not embody the overall quality of seismic data, also can't embody the collection data subsequent treatment with explain in value.
The utility model is to the generating principle and the attributive character of interference wave; Through a plurality of fields such as spatial domain, time domain, speed territory, energy territory, frequency field compacting filtering interfering ripple, accurately as required one or more groups seismic event is carried out quantitative test after separating noise, thereby eliminated the influence of interference wave to analysis result.Parameter indexs such as the energy of effective reflection, frequency, signal to noise ratio (S/N ratio) are the key factors of decision seismic data quality; To seismic event after the denoising carry out the quantitative test purpose and specific aim stronger; The theoretical definition that more meets the seismic data parameter index; The situation of change that reflects the seismic data quality characteristic more realistically satisfies the needs of follow-up test and production better.
2, window designing technique during performance analysis
Technological in the past: analysis window is the key factor that influences quantitative analysis results, and existing quantitative analysis software and technology are all used unified solid timing window.For same position experimental tests data and the mild whole district's data of stratum spread, same stratum difference reflection interval is little, and adopting unified solid timing window is to be suitable for fully.But for complex structure or stratigraphic dip larger area seismic data, same stratum difference reflection interval is big, and the ripple group of being analyzed in the unified solid timing window reflects from Different Strata, and its analysis result has lost meaning naturally.
Complex structure or stratum, stratigraphic dip larger area are gone up and down violent, and same stratum changes greatly reflection interval, and unified solid timing window internal reflection ripple is from Different Strata, and the quantitative analysis results comparability is poor.To this difficult problem; The utility model distributes and stratum spread situation according to structure, window during the design performance analysis, and the ripple group is from same set of or overlap the stratum more and reflect in the analysis window; Make quantitative analysis results have comparability, the window analysis result is more scientific and reasonable when therefore dynamic.
3, analysis result accuracy verification technique
Technological in the past: quantitative analysis software does not still have the accuracy verification technique at present, mainly artificially judges according to geology general knowledge and knowhow, has certain randomness and human factor.
Quantitative analysis results usually receives the influence of many human factors and software factor.Different analysis window (shape, size, position, unitarity), analysis software (principle, producer, version), analytic target (signal to noise ratio (S/N ratio), layer position) and analysis domain (one-dimensional point test, two-dimentional wire harness, three-dimensional planar) all possibly cause different even opposite quantitative analysis results.How to guarantee precision of analysis, how to estimate the digit basis that science is provided for production decision with checking and accepting, for these difficult problems, analysis result accuracy verification technique must be solved with fine.This technology mainly comprises: the qualitative and quantitative analysis result replenishes checking mutually mutually, qualitative analysis be the prerequisite of quantitative test with basic, quantitative test is replenishing and refinement of qualitative analysis, when two kinds of analysis results contradict, pays the utmost attention to The qualitative analysis; Point-line-surface analysis result combines and verifies mutually, and single single big gun data must be consistent with sliver and full work area analytic statistics result; The different software analysis result compares and verifies mutually, when analysis result is inconsistent, after fully the analyze and research software principle and the scope of application, selects suitable analysis software and analysis result thereof.
4, the analysis results digitizing technique and form of expression variation technology
Technological in the past: the analysis result of existing software shows form fix and single with the picture form.
The utility model writes down each parameter value in trace header, with the data information fully digitalization through parameter index items such as analytical calculation seismic data energy, frequency, signal to noise ratio (S/N ratio), background, wavelets.Database can be described the parameter attribute and the situation of change of seismic data with various ways such as text, form, curve and pictures; Database is a minimum unit with single seismic trace, can be combined into data sets such as big gun collection, road collection, CDP collection, accurately reflects the Q factor and the Changing Pattern of each field seismic data of full work area; Database is convenient and swift, helps data management and calls.
Description of drawings
Fig. 1 is the theory diagram of the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
As shown in Figure 1; A kind of seismic acquisition quality quantification analysis and evaluation system; It comprises that digital seismograph (can adopt 428 digital seismographs), workstation processor (adopt the CPU processor; Model can be Xeon MP 2GHz) and data processor (adopt the CPU processor, model can be T2500/2GHz); Described digital seismograph is gathered seismic event as the signals collecting end of seismic acquisition quality quantification analysis and evaluation system; And be translated into digital signal; The signal output part of digital seismograph links to each other with the signal input part of workstation processor; The signal output part of workstation processor links to each other with the signal input part of data processor; The signal output part of workstation processor and data processor as the output of seismic acquisition quality quantification analysis and evaluation system, is exported seismic waveshape image (as: geological data volume imaging) and seismic event data quality parameter (as: data quality parameter index numerical value and Changing Pattern spatial distribution map thereof) respectively.
Concatenated filter between digital seismograph of the utility model and the workstation processor (model can be UAF42).
The workstation processor of the utility model connects first display and plotting apparatus (model can be OYO-36).
The data processor of the utility model connects second display and printer (model can be I4700).
During practical implementation:
Technical scheme was that the sub-seismograph of 428 numbers directly is connected with display with plotting apparatus in the past, and image data is passed to plotting apparatus with the sub-seismograph of 428 numbers and display is directly drawn or demonstration.The technical scheme of the utility model is to use data line between the sub-seismograph of 428 numbers, plotting apparatus, display, to seal in the CPU processor of a wave filter and two different effects successively.
1, seismograph is passed to wave filter with image data; Wave filter filters low and low rate interference wave; Let earthquake reflected wave pass through; Subsequent analysis and demonstration is useful signal like this, rather than the mixing ripple of useful signal and noise, and the signal to noise ratio (S/N ratio) that improves analytic target can improve the authenticity and the accuracy of analysis result.
2, wave filter is passed to workstation processor CPU I with signal; Window during CPU I design performance analysis; Window is chosen in the reflection wave groups scope of high s/n ratio behind the direct wave in the time of dynamically; Guarantee to analyze the ripple group simultaneously and reflect, the scope of application that like this can extensive magnitude fractional analysis evaluation system, the comparability and the unitarity of raising analysis result from same set of or a few cover zone of interest.The CPU I is calculated energy, frequency, wavelet consistance, the signal to noise ratio (S/N ratio) of importing data in when design window, index parameter values such as background noise, and it is formed quality information file pass to data processor CPU II.Number after the CPU I can also be separated noise passes to display or plotting apparatus is shown as picture respectively, helps qualitative analysis more accurately.
3, the CPU II will be imported quality information statistics back spanned file into, pass to display or printer with various ways such as text, form, curve, pictures, and directly perceived comprehensively must representing gathered data quality and Changing Pattern thereof.
The utility model does not relate to all identical with the prior art prior art that maybe can adopt of part to be realized.
Claims (4)
1. a seismic acquisition quality quantification analysis and evaluation system is characterized in that it comprises digital seismograph, workstation processor and data processor; Described digital seismograph is gathered seismic event as the signals collecting end of seismic acquisition quality quantification analysis and evaluation system; And be translated into digital signal; The digital signal output end of digital seismograph links to each other with the signal input part of workstation processor; The signal output part of workstation processor links to each other with the signal input part of data processor; The signal output part of workstation processor and data processor as the output of seismic acquisition quality quantification analysis and evaluation system, is exported seismic waveshape image and seismic event data quality parameter respectively.
2. seismic acquisition quality quantification analysis and evaluation system according to claim 1 is characterized in that concatenated filter between described digital seismograph and the workstation processor.
3. seismic acquisition quality quantification analysis and evaluation system according to claim 1 is characterized in that described workstation processor connects first display and plotting apparatus.
4. seismic acquisition quality quantification analysis and evaluation system according to claim 1 is characterized in that described data processor connects second display and printer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011202419562U CN202119921U (en) | 2011-07-11 | 2011-07-11 | Quantitative analysis and evaluation system for seismic prospecting acquisition quality |
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| CN2011202419562U CN202119921U (en) | 2011-07-11 | 2011-07-11 | Quantitative analysis and evaluation system for seismic prospecting acquisition quality |
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| CN202119921U true CN202119921U (en) | 2012-01-18 |
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| CN2011202419562U Expired - Lifetime CN202119921U (en) | 2011-07-11 | 2011-07-11 | Quantitative analysis and evaluation system for seismic prospecting acquisition quality |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288995A (en) * | 2011-07-11 | 2011-12-21 | 中国石油化工集团公司 | Seismic exploration collection quality quantitative analysis evaluation system |
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2011
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288995A (en) * | 2011-07-11 | 2011-12-21 | 中国石油化工集团公司 | Seismic exploration collection quality quantitative analysis evaluation system |
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| GR01 | Patent grant | ||
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Granted publication date: 20120118 |
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| CX01 | Expiry of patent term |