CN104714247B - Pre-stack and post-stack linkage attribute interpretation method - Google Patents
Pre-stack and post-stack linkage attribute interpretation method Download PDFInfo
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Abstract
The invention provides a pre-stack and post-stack linkage attribute interpretation method. The pre-stack and post-stack linkage attribute interpretation method comprises the following steps that step 1, a four-dimensional linkage interpretation environment of an X-Y-T offset distance is established; step 2, under the four-dimensional environment, sensitive offset distance sections of different geologic bodies are searched; step 3, within the scope of the sensitive offset distance sections, single angle pre-stack attributes are extracted; step 4, sensitive attribution optimizing selection is conducted; and step 5, dominance attribute fitting is conducted. The pre-stack and post-stack linkage attribute interpretation method can find the sensitive offset distance sections, aiming at the different geologic bodies, through the comparison of the pre-stack attributes and post-stack attributes, within the scope of the sensitive offset distance sections, a large amount of pre-stack attributes are extracted to be in combined application with the post-stack attributes, and comprehensive discrimination on reservoir is conducted.
Description
Technical field
The present invention relates to oil field development technical field, especially relate to a kind of prestack poststack linkage attribute means of interpretation.
Background technology
Discussion of Earthquake Attribute Technology refers to be extracted, deposited by the software systems of applied analysis, various algorithm research and synthesis
Storage, visualization, analysis, checking and assessment seismic properties and the methodology that seismic properties are converted to reservoir characteristic.With
The continuous development of computer software and hardware environment, current Discussion of Earthquake Attribute Technology oneself be widely applied to oil-gas exploration and exploitation each
Individual link, this includes：The explanatory process of seismic data, seismotectonics become figure, Seismic Stratigraphic Interpretation, lithologic seismic explain and
Simulation, reservoir description, reservoir modeling and reservoir monitoring.It may be said that Discussion of Earthquake Attribute Technology will become a kind of necessary in petroleum industry
Technology and means.
" seismic properties " one word starts to introduce geophysics circle in 20 century 70s.Originally, domestic on translated name not
Complete unity, similar translated name also has seismic signature, seismologic parameter, earthquake mark etc., until just substantially uniform title in recent years
For seismic properties.Originated according to data volume different, seismic properties can be divided into prestack seismic attributes and poststack seismic properties.Poststack
The research of seismic properties is roughly divided into 3 stages：
1st stage：Late 1960s, to the end of the seventies, are the starting stage.This stage with " bright spot " technology as representative,
At this moment attributes research had not both accounted for the kinematics of seismic data, dynamic characteristic, did not had specific geological meaning yet.At that time
Seismic attributes analysis be also limited to geophysics expert according to existing understanding and experience, to analyze seismic properties with oil, gas
The relation of reservoir.Seismic attributes analysis now are only a kind of qualitative description to earthquake profile features and analysis.
2nd stage：Late 1970s to the end of the eighties, for developing the stage rapidly.This stage is quantitatively extracted with attribute
Method appears as principal character in a large number.This is the stage that seismic properties research flourishes, and the application of seismic properties starts to move towards
Every field, such as reservoir prediction, oil gas analysis and physical property research etc..But this is also the more chaotic rank of seismic properties application
Section, people are not analyzed to the geological Significance representated by seismic properties and dissect.Even someone treats as seismic properties
Catholicon, abuses without analyse, once makes the research of seismic properties fall into low ebb by climax.
3rd stage：After the nineties in 20th century, for the stage of being mature on the whole.The beginning of the nineties, with relevant, inclination angle, azimuth etc.
The a collection of multidimensional property representing starts appearance.One distinguishing feature of this generic attribute is can intuitively to reflect the structure letter on stratum
Breath, such as inclination angle, the apparent dip/tendency on azimuth reflection stratum；Coherent anomaly instruction fracture belt, Fractured Zone etc..Therefore, it
Exploitation and application, obtain the extensive approval of each side concerned quickly.Meanwhile, with the high speed development of computer technology,
Successively investigated multiple attribute optimization methods, and the method for the seismic attributes analysis such as pattern-recognition, neutral net, prediction
Object has also developed into prediction porosity etc. from predicting oil/gas, reservoir thickness and lithology.The research of seismic properties starts to specification
Change, develop in a healthy way in scientific direction.
Continuing to increase with difficulties in exploration, poststack Discussion of Earthquake Attribute Technology cannot meet the meticulous depiction to reservoir, institute
Imperative to develop prestack seismic attributes technology.The earthquake prestack technology being grown up based on AVO technology is with respect to poststack skill
For art, information when having the amplitude of more horn of plenty and travelling, available seismic channel set information is abundanter, becomes and sends out in recent years
Open up rapid a special kind of skill method, but, earthquake data before superposition noise resistance interference performance is poor, and AVO technology is to pre-stack seismic number
High according to quality requirement, process complicated, difficulty is big.
Prestack AVO generic attribute quickly grows, but, the amplitude of prestack list angle seismic data, frequency, phase place, absorption etc.
The application of attribute is relatively fewer.On the whole, prestack information is not also fully used.How to realize prestack poststack attribute
Joint interpretation is the trend of international and domestic technology development.We have invented a kind of new prestack poststack linkage attribute explanation side for this
Method, solves above technical problem.
Content of the invention
It is an object of the invention to provide a kind of can be contrasted by prestack poststack attribute, find for different geologic bodies
The prestack poststack linkage attribute means of interpretation of its sensitive offset distance section.
The purpose of the present invention can be achieved by the following technical measures：Prestack poststack linkage attribute means of interpretation, this prestack
Poststack linkage attribute means of interpretation includes：Step 1, sets up the four-dimensional linkage interpreted environment of X-Y-T- offset distance；Step 2, four
Under dimension environment, find the sensitive offset distance section of different geologic bodies；Step 3, in sensitive offset distance segment limit, extracts single angle and folds
Front attribute；Step 4, carries out Sensitive Attributes preferred；And step 5, carry out advantageous properties matching.
The purpose of the present invention also can be achieved by the following technical measures：
In step 1, according to prestack road collection and poststack earthquake, the four-dimensional linkage interpreted environment based on offset distance, pin are set up
A certain geologic body to a certain depth, develops the display based on offset distance and explanation window.
In step 2, under four-dimensional environment, click on a certain geologic body, it is demarcated simultaneously and cuts open in prestack list angle earthquake
On face and in stacked seismic data, realize the linkage display of prestack list angle seismic profile and stacked seismic data, by linkage
The change of lineups in display and comparative analysis prestack stacked seismic data, finds the sensitive offset distance section of a certain geologic body；?
Under four-dimensional environment, click on a certain geologic body, realize the linkage display of prestack list angular nature and poststack attribute, by prestack poststack
The linkage display of attribute and comparative analysis, find the sensitive offset distance section of a certain geologic body.
In step 3, for a certain geologic body, in sensitive offset distance segment limit, extract folded on single angle-data body
Front single angular nature, and compare with poststack attribute, thus search out portraying geologic body effectiveness comparison obvious prestack list angle
Attribute, including amplitude, frequency, phase place, absorption properties, by comparative analysis prestack list angle seismic properties and poststack attribute, seeks
Look for Sensitive Attributes in sensitive offset distance segment limit for a certain geologic body.
In step 4, for the various prestack list angular nature extracting on a certain single angle-data body, carry out the degree of correlation and divide
Analysis, the big attribute of the degree of correlation, only take one；Secondly, for the same seismic properties extracted on different list angle-data bodies, carry out
Controlling UEP, the big attribute of the degree of correlation, only take one；Finally attribute preferably out is collected together, for geology mesh
Mark, selects with the higher several generic attributes of the geologic parameter degree of correlation, thus finally give solving the preferred of a certain concrete practical problem
Seismic properties afterwards, i.e. advantageous properties.
In steps of 5, crossed by the scatterplot of advantageous properties and concrete practical problem, determine advantageous properties and specifically reality
The linear or non-linear relation of problem.
In steps of 5, advantageous properties matching is determined according to the relation between each advantageous properties and concrete practical problem
Relational expression is as follows：
Y=g [f1(x1),f2(x2),…fn(xn)]
Wherein, fi(xi) represent the functional relation of i-th advantageous properties and concrete practical problem it may be possible to linearly, also may be used
Can be non-linear；G [] represents linear relation.
Prestack poststack linkage attribute means of interpretation in the present invention, for prestack Information application not fully, prestack poststack
The problems such as attribute lacks comparative analysis, develops a kind of prestack poststack linkage attribute means of interpretation.From prestack road collection and poststack earthquake
Data is set out, and sets up the four-dimensional linkage interpreted environment of X-Y-T- offset distance.In such circumstances, for the different geology of different depth
Body, develops the display based on offset distance and explanation window；Prestack list angle seismic profile and stacked seismic data can be realized
Linkage display, prestack list angular nature and poststack attribute comparative analysis, by linkage display and comparative analysis, find different
The sensitive offset distance section of geologic body.In sensitive offset distance segment limit, single angular nature is extracted on single angle-data body, and right
Single angular nature does suitable optimum organization, thus preferably portraying geology body characteristicses.
Brief description
Fig. 1 is the flow chart of a specific embodiment of prestack poststack linkage attribute means of interpretation of the present invention；
Fig. 2 is the display of prestack list angle seismic profile based on offset distance and contrast in a specific embodiment of the present invention
Figure；
Fig. 3 is the prestack list angle RMS attribute based on offset distance and poststack RMS attribute in a specific embodiment of the present invention
Comparison diagram；
Fig. 4 be the present invention a specific embodiment in scatterplot between different attribute cross schematic diagram.
Specific embodiment
Above and other objects, features and advantages for enabling the present invention become apparent, and cited below particularly go out preferably to implement
Example, and coordinate institute's accompanying drawings, it is described in detail below.
The flow process of a specific embodiment of attribute means of interpretation as shown in figure 1, the prestack poststack that Fig. 1 is the present invention links
Figure.
In step 101, set up the four-dimensional linkage interpreted environment of X-Y-T- offset distance.It is defeated with prestack road collection and poststack earthquake
The side of entering, by programming realization, sets up a four-dimensional linkage interpreted environment based on offset distance.A certain geology for a certain depth
Body, develops the display based on offset distance and explanation window.Flow process enters into step 102.
In step 102, under four-dimensional environment, click on a certain geologic body, it is demarcated simultaneously and cuts open in prestack list angle earthquake
On face and in stacked seismic data, it is possible to achieve the linkage display of prestack list angle seismic profile and stacked seismic data, pass through
The change of lineups in linkage display and comparative analysis prestack stacked seismic data, finds the sensitive offset distance of a certain geologic body
Section, as shown in Fig. 2 from this figure, it can be seen that on single angle seismic profile of different angles, amplitude energy and seismic reflection
The difference of form；In addition, under four-dimensional environment, clicking on a certain geologic body, it is possible to achieve prestack list angular nature and poststack attribute
Linkage display, by linkage display and the comparative analysis of prestack poststack attribute it is also possible to find a certain geologic body sensitive partially
Move away from section, as shown in figure 3, from this figure, it can be seen that the river course portrayed than poststack RMS attribute of 10 degree of prestack and 20 degree of RMS attributes
Information becomes apparent from.Flow process enters into step 103.
In step 103, in sensitive offset distance segment limit, extract single angle prestack attribute.For a certain geologic body, quick
In sense offset distance segment limit, extract the prestack list angular nature on single angle-data body, and compare with poststack attribute, thus seeking
Find and portray geologic body effectiveness comparison obvious prestack list angular nature, including attributes such as amplitude, frequency, phase place, absorptions.Pass through
Comparative analysis prestack list angle seismic properties and poststack attribute, find sensitivity in sensitive offset distance segment limit for a certain geologic body
Attribute.Flow process enters into step 104.
In step 104, carry out Sensitive Attributes preferred.The various Sensitive Attributes that previous step is extracted, carry out attribute preferred.Often
A kind of seismic properties reflect the feature of reservoir from different angles, and this is that relation among these is sufficiently complex.Same attribute exists
Different work areas, different reservoir are not quite similar to the sensitiveness of prediction object, and may deposit due between different seismic properties
Correlation, several optimum single combinations of attributes are not necessarily optimized, also differ and surely obtain the prediction effect of optimum.
Therefore, for particular problem it is necessary to select some best seismic properties or attribute from numerous seismic properties
Combination, that is, carried out from more to few seismic properties optimization analysis.Seismic properties method for optimization analysis is a lot, can be generally divided into ground
Shake attribute dimensionality reduction mapping selects two big class methods with seismic properties：1. seismic properties dimensionality reduction mapping；2. seismic properties select.
It is presently used for pattern-recognition, the overall selection principle of seismic properties in reservoir description is：1. different research areas
Domain should select corresponding attribute according to the geology characteristic of local area on the basis of test；2. need the geologic objective such as rock solving
The differences such as property, stratum, oil-gas possibility, fracture belt, the attribute of selection should be different；3. select reflection off-note most sensitive,
The clearest and the most definite attribute of physical significance participates in computing or is used as comprehensive study；4., in numerous seismic properties, reflect off-note
In several similar parameters, only one of choosing；5. according to practice and experience, participate in the attribute of comprehensive analysis or process
Typically it is preferred at 3 to 9.
By substantial amounts of test and practical application, sum up a set of prestack poststack linkage attribute method for optimizing.First against
The various prestack list angular nature extracting on a certain single angle-data body, carry out Controlling UEP, and the big attribute of the degree of correlation only takes
First, as shown in figure 4, from fig. 4, it can be seen that velocity of longitudinal wave and shear wave velocity linear correlation degree are very big, then can only take vertical
Wave velocity；Lame parameter * density and modulus of shearing * density do not have linear dependence well, velocity of longitudinal wave and Poisson's ratio not to have yet
There is linear dependence well；Secondly, for the same seismic properties extracted on different list angle-data bodies, carry out the degree of correlation and divide
Analysis, the big attribute of the degree of correlation, only take one；Finally attribute preferably out is collected together, for geologic objective, select with
The higher several generic attributes of the geologic parameter degree of correlation.Thus finally give solve a certain concrete practical problem preferred after earthquake belong to
Property, i.e. advantageous properties.Flow process enters into step 105.
In step 105, carry out advantageous properties matching.Crossed by the scatterplot of advantageous properties and concrete practical problem, determine
Advantageous properties and the linear of concrete practical problem or non-linear relation.According between each advantageous properties and concrete practical problem
Relation determine that the relational expression of advantageous properties matching is as follows：
Y=g [f1(x1),f2(x2),…fn(xn)]
Wherein, fi(xi) represent the functional relation of i-th advantageous properties and concrete practical problem it may be possible to linearly, also may be used
Can be non-linear；G [] represents linear relation.Flow process terminates.
Prestack poststack linkage attribute means of interpretation in the present invention, on the one hand breaches the restriction of linear relationship, it then follows
True relation between advantageous properties and concrete practical problem, the advantage that on the other hand can consider multiple advantageous properties,
More clearly portray geologic body, solve concrete practical problem.
Claims (2)
1. prestack poststack linkage attribute means of interpretation is it is characterised in that this prestack poststack linkage attribute means of interpretation includes：
Step 1, sets up the four-dimensional linkage interpreted environment of X-Y-T- offset distance；
Step 2, under four-dimensional environment, finds the sensitive offset distance section of different geologic bodies；
Step 3, in sensitive offset distance segment limit, extracts single angle prestack attribute；
Step 4, carries out Sensitive Attributes preferred；
Step 5, carries out advantageous properties matching；
In step 1, with prestack road collection and poststack earthquake for input side, by programming realization, set up one based on offset distance
Four-dimensional linkage interpreted environment, for a certain geologic body of a certain depth, develops the display based on offset distance and explanation window；
In step 2, under four-dimensional environment, click on a certain geologic body, it is demarcated simultaneously on prestack list angle seismic profile
In stacked seismic data, it is possible to achieve the linkage display of prestack list angle seismic profile and stacked seismic data, by linkage
The change of lineups in display and comparative analysis prestack stacked seismic data, finds the sensitive offset distance section of a certain geologic body；Or
Under four-dimensional environment, click on a certain geologic body, it is possible to achieve the linkage display of prestack list angular nature and poststack attribute, by folded
The linkage display of front poststack attribute and comparative analysis are it is also possible to find the sensitive offset distance section of a certain geologic body；
In step 3, for a certain geologic body, in sensitive offset distance segment limit, extract the prestack list on single angle-data body
Angular nature, and compare with poststack attribute, thus search out portraying geologic body effectiveness comparison obvious prestack list angular nature,
Including amplitude, frequency, phase place, absorption properties, by comparative analysis prestack list angle seismic properties and poststack attribute, find a certain
Sensitive Attributes in sensitive offset distance segment limit for the geologic body；
In step 4, first against the various prestack list angular nature extracting on a certain single angle-data body, carry out the degree of correlation and divide
Analysis, the big attribute of the degree of correlation, only take one；Secondly, for the same seismic properties extracted on different list angle-data bodies, carry out
Controlling UEP, the big attribute of the degree of correlation, only take one；Finally attribute preferably out is collected together, for geology mesh
Mark, selects with the higher several generic attributes of the geologic parameter degree of correlation, thus finally give solving the preferred of a certain concrete practical problem
Seismic properties afterwards, i.e. advantageous properties；
In steps of 5, crossed by the scatterplot of advantageous properties and concrete practical problem, determine advantageous properties and concrete practical problem
Linear or non-linear relation.
2. prestack poststack according to claim 1 links attribute means of interpretation it is characterised in that in steps of 5, according to every
Relation between one advantageous properties and concrete practical problem determines that the relational expression of advantageous properties matching is as follows：
Y=g [f1(x1),f2(x2),…fn(xn)]
Wherein, fi(xi) represent the functional relation of i-th advantageous properties and concrete practical problem it may be possible to linear it is also possible to
Non-linear；G [] represents linear relation.
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| CN113240686A (en) * | 2021-05-08 | 2021-08-10 | 山东省地质矿产勘查开发局八〇一水文地质工程地质大队 | Geological information analysis processing method, device, equipment and readable storage medium |
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