CN106772675B - Method based on fault rupture structure evaluation tomography keying property - Google Patents
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Abstract
The present invention relates to a kind of methods based on fault rupture structure evaluation tomography keying property, include the following steps：The fault structure feature of the various types of tomography in hard objectives region；The permeability at different fault structure positions is obtained according to the fault structure feature；Utilize the keying probability of the computing permeability corresponding site of the fault structure different parts, then the keying probability of interval tomography is corresponded to using the keying probability calculation of the corresponding site, then the keying for opening and closing the tomography of target area described in probability assessment for passing through different interval tomographies.According to the method provided by the invention based on fault rupture structure evaluation tomography keying property, considers a variety of geologic(al) factors, disclosure satisfy that the precise requirements of fault sealing property quantitative assessment, petroleum resources geological prospecting and development evaluation field can be widely used in.
Description
Technical field
The present invention relates to the methods based on fault rupture structure evaluation tomography keying property.
Background technology
The evolutionary process of tomography is divided into active stage and resting stage, and active stage is typically all of short duration, and tomography is predominantly static
Phase.Fault development phase or active stage are open state, can be as the channel of oil-gas migration.Fault sealing property and start-stop performance are commented
Valence determines that tomography is to open and close or close to oil gas mainly for the tomography in resting stage.Fault closeness evaluation after
Two stages of qualitative and quantitative mainly pass through the formation mechenism for analyzing fault sealing after the 1950s, it is proposed that sand mud pair
Connect, mudstone creep, DIAGENETIC CHARACTERISTICS etc. can generate sealing condition, use the closing of " closing " and " not closing " qualitative description tomography
Ability；The it is proposed and application of tomography keying property quantitative evaluation method start from the end of the eighties in last century, at present quantifying for application
Index includes mainly CSP, SSF, SGR, Allen graphical method, disconnected storage difference of displacement pressure, section direct stress, fault sealing coefficient, connects
Logical probabilistic method etc..
Tomography keying ability is affected by various factors, including fault properties, turn-off, lithology combination and its docking are closed
The same natural disposition of system, buried depth, inclination angle, mudstone creep, metharmosis size, fault zone interior structure difference and tomography and
Activity etc..Single closure and keying merit rating method, it is difficult to which accurate evaluation causes the limitation of evaluation result sometimes
Property and uncertainty.Consider that all these factors are again very difficult, because some factors are to be difficult to be obtained in oil-gas exploration, exploitation
It arrives, early stage especially in oil-gas exploration.Current closure and keying Comprehensive Evaluation On Ability method includes mainly non-linear reflect
Analytic approach, Logic-information method, Multistage fuzzy comprehensive technology etc. are penetrated, these methods are to utilize mathematical statistics knowledge, will be closed
Property and open and close factors influencing on ability press weight size, establish the synthesis Mathematical Method of function model.
Although achieving many impressive progresses about fault sealing Journal of Sex Research both at home and abroad, still without a kind of very ripe suitable
With the evaluation method under various geological conditions.
Invention content
An object of the present invention is to provide a kind of methods based on fault rupture structure evaluation tomography keying property.
A kind of method based on fault rupture structure evaluation tomography keying property according to the present invention, includes the following steps：
S101：The fault structure feature of the various types of tomography in hard objectives region；S102：It is obtained according to the fault structure feature different disconnected
The permeability of layer structure position；S103：Keying using the computing permeability corresponding site of the fault structure different parts is general
Then rate corresponds to the keying probability of interval tomography using the keying probability calculation of the corresponding site, then disconnected by different intervals
The keying for opening and closing the tomography of target area described in probability assessment of layer.
According to it is provided by the invention based on fault rupture structure evaluation tomography open and close property method, consider a variety of geology because
Element disclosure satisfy that the precise requirements of fault sealing property quantitative assessment, can be widely used in petroleum resources geological prospecting and exploitation
Evaluation field.
In addition, according to the above-mentioned method based on fault rupture structure evaluation tomography keying property of the present invention, can also have
Following additional technical characteristic：
Further, the step S101 includes following sub-step：S1011：By sectional analysis method to seismic region
Tomography analyzed, to obtain fault style, divide tomography rank, distinguish fault properties, then differentiate different stage tomography
Correlation；S1012：Using basin region block diagram, geologic map and drilling well block diagram determine different layers position lithology and its
The brittleness and plasticity of lithology；S1013：Using field section research different layers position, the structure feature of the tomography of different lithology, determine
Catalase situation, fracture development density and range, mudstone creep, fault gouge development and chemical bond situation；S1014：Root
It is determined according to seismic data and bores the well for meeting tomography, fault structure is then determined according to well-log information；S1015：According to fault properties,
Disconnect lithology, the fault structure feature for determining various types of tomography of developing stratum and Fault depth.
Further, in the sub-step S1014, when determining fault structure according to well-log information, pass through well first
Shake calibration technique determines the depth segment of mature fault, then determines fault structure by sensitivity curve of logging well.
Further, the well-log information in the sub-step S1014 includes Electrical imaging data harmony imaging data.
Further, the step S102 includes following sub-step：S1021：Outer section out of office is bored sample, and to not
Same fault properties, disconnection lithology and mature fault layer position are analyzed；S1022：In the difference of crushed zone and/or induced fractures band
Position of fault carries out close sampling, and the protolith of the closer identical lithology of the selected distance tomography is sampled, wherein sampling rule
Lattice meet porosity and permeability test request；S1023：Measure the porosity of acquired complete rock sample, permeability and close
Angle value, and establish porosity-permeability, porosity-density relationship；S1024：Different tomography knots are established using core test result
Correlation of the structure with permeability with depth and permeability and lithology.
Further, further include following sub-step after the sub-step S1022：To the incomplete rock sample of acquirement into
It is analyzed under row mirror and compares itself and test physical property sample, with Estimation of porosity and permeability.
Further, the step S103 includes following sub-step：S1031：Tomography related reservoir is analyzed, the oil is chosen
Breakpoint at the top and bottom of gas reservoir, and combine step S102 determinations on the permeability of disk slit band, the permeability of crushed zone and under
The permeability of disk slit band；S1032：Count the permeability of the upper disk slit band, the permeability of the crushed zone and it is described under
Then the correlation of the permeability of disk slit band and the oil-gas reservoir is established and is united based on display feature and fault structure band permeability
The model of probability is counted, and fit correlation opens and closes probabilistic type, then passes through the conspicuousness of look-up table inspection statistics；S1033：Utilize reality
Border data fitting formula P=100-eAlgK+B, to obtain the value of undetermined coefficient A and B, in formula, P is to open and close probability, and K is permeability,
The unit of K is 10-3μm2；S1034：Based on oil gas preferentially by the principle of hypertonic flow rate medium, the fault structure is chosen respectively
The maximum seepage flow rate of fault structure band is corresponded under different depth, and the tomography for seeking different depth section respectively opens and closes probability, then
The product that probability is opened and closed by the tomography of all different depth sections obtains the whole keying probability of the fault structure；S1035：According to
Open and close tomography and/or the determination of probability in the target area in the keying determine the probability target area of different tomographies with bigger
The position that probability is opened and closed with bigger of a certain tomography.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obviously, or practice through the invention is recognized.
Description of the drawings
Fig. 1 is the flow chart of the method based on fault rupture structure evaluation tomography keying property of the present invention；
Fig. 2 is the vertical keying probability statistics figure of tomography；
Fig. 3 is that tomography opens and closes probability assessment model.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings.Below with reference to
The embodiment of attached drawing description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
Embodiment 1
As shown in Figure 1, embodiment 1 provides a kind of method based on fault rupture structure evaluation tomography keying property, specifically
Include the following steps:
S101：The fault structure feature of the various types of tomography in hard objectives region.
S102：The permeability at different fault structure positions is obtained according to the fault structure feature.
S103：Using the keying probability of the computing permeability corresponding site of the fault structure different parts, then utilize
The keying probability calculation of the corresponding site corresponds to the keying probability of interval tomography, then the keying probability by different interval tomographies
Evaluate the keying of the tomography of the target area.
The method based on fault rupture structure evaluation tomography keying property that embodiment 1 provides, considers a variety of geologic(al) factors, energy
Enough meet the precise requirements of fault sealing property quantitative assessment, petroleum resources geological prospecting and development evaluation neck can be widely used in
Domain.
Embodiment 2
Embodiment 2 provides a kind of method based on fault rupture structure evaluation tomography keying property, specifically includes following step
Suddenly:
S101：The fault structure feature of the various types of tomography in hard objectives region, specifically includes following sub-step：
S1011：The tomography of seismic region is analyzed by sectional analysis method, to obtain fault style, divide and break
Level is other, distinguishes fault properties, then differentiates the correlation of different stage tomography.
S1012：The lithology and its lithology of different layers position are determined using basin region block diagram, geologic map and drilling well block diagram
Brittleness and plasticity.
S1013：Using field section research different layers position, the structure feature of the tomography of different lithology, catalase is determined
Situation, fracture development density and range, mudstone creep, fault gouge development and chemical bond situation.
S1014：It is determined according to seismic data and bores the well for meeting tomography, fault structure is then determined according to well-log information.
S1015：Various types of tomography is determined according to fault properties, disconnection lithology, developing stratum and Fault depth
Fault structure feature.
S102：The permeability that different fault structure positions are obtained according to the fault structure feature, specifically includes following son
Step：
S1021：Outer section out of office is bored sample, and to different fault properties, disconnect lithology and mature fault layer position into
Row analysis；
S1022：Close sampling is carried out in the different position of fault of crushed zone and/or induced fractures band, and selected distance should
The protolith of the closer identical lithology of tomography is sampled, wherein sampling specification meets porosity and permeability test request；
S1023：Porosity, permeability and the density value of acquired complete rock sample are measured, and establishes porosity-infiltration
Rate, porosity-density relationship；
S1024：Different fault structures are established with permeability and depth and permeability and lithology using core test result
Correlation.
S103：Using the keying probability of the computing permeability corresponding site of the fault structure different parts, then utilize
The keying probability calculation of the corresponding site corresponds to the keying probability of interval tomography, then the keying probability by different interval tomographies
The keying for evaluating the tomography of the target area specifically includes following sub-step：
S1031：Tomography related reservoir is analyzed, chooses the breakpoint at the top and bottom of the oil-gas reservoir, and combine step S102
Disk slit band (a in determination1) permeability, crushed zone (b1) permeability and lower wall slit band (c1) permeability；
S1032：Count the permeability of the upper disk slit band, the permeability of the crushed zone and the lower wall slit band
Then the correlation of permeability and the oil-gas reservoir is established based on display feature and mould of the fault structure with permeability statistical probability
Type (see Fig. 2), and fit correlation opens and closes probabilistic type, then passes through the conspicuousness of look-up table inspection statistics；
S1033：Utilize real data fitting formula P=100-eAlgK+B, to obtain the value of undetermined coefficient A and B, in formula, P
To open and close probability, K is permeability, and the unit of K is 10-3μm2；
S1034：Based on oil gas preferentially by the principle of hypertonic flow rate medium, the fault structure different depth is chosen respectively
The maximum seepage flow rate of lower corresponding fault structure band, and the tomography for seeking different depth section respectively opens and closes probability, then by all
The product that the tomography of different depth section opens and closes probability obtains the whole keying probability of the fault structure, sees that Fig. 3, formula are as follows：
K1=Max(a1, b1, c1)
K2=Max(a2, b2, c2)
K3=Max(a3, b3, c3)
P=P1×P2×…Pi(i=1,2,3 ...)
S1035：According in the keying determine the probability target area of different tomography there is bigger to open and close in the target area
The tomography of probability and/or the position that probability is opened and closed with bigger for determining a certain tomography.
The method based on fault rupture structure evaluation tomography keying property that embodiment 2 provides, considers a variety of geologic(al) factors, energy
Enough meet the precise requirements of fault sealing property quantitative assessment, petroleum resources geological prospecting and development evaluation neck can be widely used in
Domain.
Embodiment 3
Embodiment 3 is based on Gaer basin some areas fault rupture structure evaluation tomography keying property, and step is equal with embodiment 2
Identical, embodiment 3 show that the identical lithology permeability in Junggar Basin some areas has power related to depth in step S1024
Property, i.e.,：
K=A*HB
In formula：K-permeability, unit 10-3μm2；H-depth, unit m；A, B-undetermined coefficient utilizes experiment number
It is obtained according to fitting.
Zhunger Basin western part screw oil expeller is broken using method provided in this embodiment and carries out system evaluation, overall evaluation result obtains
Go out, identical scale-level tomography, structure feature is more consistent, dredges that probability is larger, and craven fault probability is small；Same tomography, upper disk are split
Seamed belt keying property is more than lower wall slit band, and lower wall slit band is more than crushed zone, that is, keying property has good positive correlation with permeability
Property, permeability dredges more greatly that probability is higher, has good consistency with the fault structure that drilling and coring delivery is shown, illustrates this implementation
The method that example provides has certain accuracy.
Embodiment 4
Embodiment 4 provides a kind of based on the evaluation of Chepaizi area, Junggar basin Carboniferous System volcanic rock fault structure in detail
The method of its keying property, embodiment 4 is differed only in embodiment 3, in the sub-step S1014, is provided according to well logging
When material determines fault structure, the depth segment that calibration technique determines mature fault is shaken by well first, it is then sensitive bent by logging well
Line determines fault structure.Remaining step all same.It is disconnected that sub- Carboniferous volcanic rock is arranged to Junggar Basin vehicle using embodiment 4
Layer structure is identified, and distinguishing indexes are shown in Table 1.
1 Chepaizi area, Junggar basin Carboniferous System volcanic rock fault structure distinguishing indexes of table
F：Fault structure index parameters (dimensionless) are logged well bent by interval transit time, density, depth (shallow) resistivity, hole diameter etc.
Line changing value, normalization are multiplied by after weight coefficient is added and are obtained.
It can be obtained by table 1, embodiment 4 arranges sub- Carboniferous volcanic rock fault structure identification to Junggar Basin vehicle
As a result the fault structure shown with drilling and coring delivery has good consistency, illustrates that this method disclosure satisfy that fault sealing property is quantitative
The precise requirements of evaluation.
Embodiment 5
Embodiment 5 provides a kind of method for evaluating its keying property based on Hinterland of The Junggar Basin fault structure in detail, real
Differing only in for example 5 and embodiment 3 is applied, the well-log information in the sub-step S1014 includes Electrical imaging data and acoustic imaging
Data is combined with Conventional Logs more finely to identify fault structure using imaging data colour code and crack identification achievement.
Remaining step all same.
The Zhunger Basin abdomen tomography evaluation result that embodiment 5 obtains shows that Electrical imaging, acoustic imaging confirm upper disk slit band
Apparent fracture development, evaluation display dredges that probability is larger to reach 73%, and lower wall and crushed zone crack and permeability are smaller, dredge
Probability is only 27%.701 finishing drilling of Dong confirms, is especially predominantly located at the upper disk of fracture, and lower wall is without any display.Embodiment 5 obtains
Result and practical results of drilling have preferable consistency, illustrate that the method that embodiment 5 provides disclosure satisfy that fault sealing property is determined
Measure the precise requirements of evaluation.
Embodiment 6
Embodiment 6 provides a kind of side evaluating its keying property based on Junggar backlands area fault structure in detail
Method, embodiment 6 are differed only in embodiment 3, further include following sub-step after the sub-step S1022：To acquirement
Incomplete rock sample analyzed under mirror and compares itself and test physical property sample, with Estimation of porosity and permeability.
By surveying physical property verification, it is 5% or so that this area's fault belt, which is dredged, and probability 85% is dredged much smaller than upper disk
With lower wall 80%.The regional tomography scale of brill is big in fact with this for this, and crushed zone development is consistent, due to preferable plugging action, tomography
Lower wall oil/gas show is significantly better than hanging wall, and oil gas is mainly distributed in lower wall.The real result and evaluation conclusion of boring has preferable kiss
Conjunction property illustrates that the method for the offer of embodiment 6 disclosure satisfy that the precise requirements of fault sealing property quantitative assessment.
To sum up, according to the method provided by the invention based on fault rupture structure evaluation tomography keying property, consider a variety ofly
Quality factor disclosure satisfy that the precise requirements of fault sealing property quantitative assessment, can be widely used in petroleum resources geological prospecting and
Development evaluation field.It is more to the sub- area in Chepaizi area, Junggar basin, basin abdomen, quasi- north, quasi- south using method provided by the invention
A area tomography keying property is evaluated, and evaluation result has good consistency with real result of boring.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiments or example.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (6)
1. a kind of method based on fault rupture structure evaluation tomography keying property, which is characterized in that include the following steps：
S101：The fault structure feature of the various types of tomography in hard objectives region；
S102：The permeability at different fault structure positions is obtained according to the fault structure feature；
S103：Using the keying probability of the computing permeability corresponding site of the fault structure different parts, then utilize described
The keying probability calculation of corresponding site corresponds to the keying probability of interval tomography, then the keying probability assessment by different interval tomographies
The keying of the tomography of the target area；
The step S103 includes following sub-step：
S1031：Tomography related reservoir is analyzed, chooses the breakpoint at the top and bottom of the oil-gas reservoir, and step S102 is combined to determine
The permeability of upper disk slit band, the permeability of the permeability of crushed zone and lower wall slit band；
S1032：Count the infiltration of the permeability, the permeability of the crushed zone and the lower wall slit band of the upper disk slit band
Then the correlation of rate and the oil-gas reservoir is established based on display feature and model of the fault structure with permeability statistical probability,
And fit correlation opens and closes probabilistic type, then passes through the conspicuousness of look-up table inspection statistics；
S1033：Utilize real data fitting formula P=100-eAlgK+B, to obtain the value of undetermined coefficient A and B, in formula, P is to open
Probability is closed, K is permeability, and the unit of K is 10-3μm2；
S1034：Based on oil gas preferentially by the principle of hypertonic flow rate medium, it is right under the fault structure different depth to choose respectively
The maximum seepage flow rate of fault structure band is answered, and the tomography for seeking different depth section respectively opens and closes probability, then passes through all differences
The product that the tomography of depth segment opens and closes probability obtains the whole keying probability of the fault structure；
S1035：According in the keying determine the probability target area of different tomography there is bigger to open and close probability in the target area
Tomography and/or determine the position that probability is opened and closed with bigger of a certain tomography.
2. the method according to claim 1 based on fault rupture structure evaluation tomography keying property, which is characterized in that described
Step S101 includes following sub-step：
S1011：The tomography of seismic region is analyzed by sectional analysis method, to obtain fault style, divide tomography grade
Not, fault properties are distinguished, the correlation of different stage tomography is then differentiated；
S1012：Using basin region block diagram, geologic map and drilling well block diagram determine different layers position lithology and its lithology it is crisp
Property and plasticity；
S1013：Using field section research different layers position, the structure feature of the tomography of different lithology, determine catalase situation,
Fracture development density and range, mudstone creep, fault gouge development and chemical bond situation；
S1014：It is determined according to seismic data and bores the well for meeting tomography, fault structure is then determined according to well-log information；
S1015：The disconnected of various types of tomography is determined according to fault properties, disconnection lithology, developing stratum and Fault depth
Split structure feature.
3. the method according to claim 2 based on fault rupture structure evaluation tomography keying property, which is characterized in that in institute
It states in sub-step S1014, when determining fault structure according to well-log information, calibration technique is shaken by well first and determines mature fault
Depth segment, then by log well sensitivity curve determine fault structure.
4. the method according to claim 2 or 3 based on fault rupture structure evaluation tomography keying property, which is characterized in that
Well-log information in the sub-step S1014 includes Electrical imaging data harmony imaging data.
5. the method according to claim 1 based on fault rupture structure evaluation tomography keying property, which is characterized in that described
Step S102 includes following sub-step：
S1021：Outer section out of office is bored sample, and is divided different fault properties, disconnection lithology and mature fault layer position
Analysis；
S1022：Close sampling, and the selected distance tomography are carried out in the different position of fault of crushed zone and/or induced fractures band
The protolith of closer identical lithology is sampled, wherein sampling specification meets porosity and permeability test request；
S1023：Measure porosity, permeability and the density value of acquired complete rock sample, and establish porosity-permeability,
Porosity-density relationship；
S1024：It is related with permeability and depth and permeability and lithology that different fault structures are established using core test result
Property.
6. the method according to claim 5 based on fault rupture structure evaluation tomography keying property, which is characterized in that in institute
Further include following sub-step after stating sub-step S1022：The incomplete rock sample of acquirement analyze under mirror and by itself and test
Physical property sample compares, with Estimation of porosity and permeability.
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| CN108343430A (en) * | 2017-07-21 | 2018-07-31 | 中国石油大学胜利学院 | Fault sealing property fuzzy mathematics comprehensive quantitative evaluation method |
| CN108241181B (en) * | 2018-01-30 | 2019-07-09 | 中国石油化工股份有限公司 | A kind of evaluation method of fault sealing property |
| CN108756795B (en) * | 2018-06-05 | 2020-08-25 | 华北科技学院 | Experimental method for researching reverse fault ground stress of coal mine tunnel |
| CN109376387A (en) * | 2018-09-19 | 2019-02-22 | 中国石油大学(北京) | Evaluation method, device and the equipment of the closure of geological fault |
| CN110321595B (en) * | 2019-06-06 | 2020-03-06 | 中国石油大学(华东) | Fault sealing evaluation method for extracting static quality coefficient by logging |
| GB2595809B (en) * | 2019-07-18 | 2023-05-24 | Petrochina Co Ltd | Method, apparatus, and system for quantitative analysis of seal of trap faults |
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| CN112068200B (en) * | 2020-09-12 | 2022-04-29 | 东北石油大学 | Quantitative characterization and prediction method for internal structure of outcrop zone fracture zone |
| CN113093306B (en) * | 2021-03-31 | 2022-01-28 | 中国科学院地质与地球物理研究所 | Method for determining fault activity during structural stability |
| CN113202459B (en) * | 2021-06-11 | 2022-02-15 | 中国矿业大学 | Method for predicting fault permeability by utilizing natural gamma logging of drill hole |
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| US7127353B2 (en) * | 2004-08-27 | 2006-10-24 | Strm, Llc | Method and apparatus for imaging permeability pathways of geologic fluid reservoirs using seismic emission tomography |
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| CN104914481B (en) * | 2015-05-13 | 2018-03-13 | 中国石油大学(华东) | A kind of integrated evaluating method of Volcanic Area fault sealing property |
| CN105068144A (en) * | 2015-09-22 | 2015-11-18 | 中国石油大学(华东) | Petroleum migration pathways quantitative evaluation method |
| CN105469159B (en) * | 2015-11-19 | 2019-10-01 | 中国石油大学(华东) | The method of quantitative forecast favorable oil/gas accumulation regions |
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