CN106355571B - Method and device for determining quality of dolomite reservoir - Google Patents
Method and device for determining quality of dolomite reservoir Download PDFInfo
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- 238000011156 evaluation Methods 0.000 claims abstract description 88
- 230000000704 physical effect Effects 0.000 claims abstract description 41
- 230000035699 permeability Effects 0.000 claims abstract description 26
- 239000011148 porous material Substances 0.000 claims description 23
- 230000001186 cumulative effect Effects 0.000 claims description 22
- 238000005266 casting Methods 0.000 claims description 10
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- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims description 7
- 235000003140 Panax quinquefolius Nutrition 0.000 claims description 7
- 235000008434 ginseng Nutrition 0.000 claims description 7
- 238000004458 analytical method Methods 0.000 claims description 5
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Abstract
The application provides a method and a device for determining the quality of a dolomite reservoir, wherein the method comprises the following steps: obtaining a core sample of dolomite to be processed; determining the reservoir type to which the core sample belongs and determining reservoir type evaluation parameters corresponding to the reservoir type; determining physical property evaluation parameters of the core sample, wherein the reservoir physical property test data comprises porosity test data and/or permeability test data; determining an heterogeneity evaluation parameter of the core sample; determining economic effectiveness evaluation parameters corresponding to the core samples; and determining a quality parameter corresponding to the core sample according to the reservoir type evaluation parameter, the physical property evaluation parameter, the heterogeneity evaluation parameter and the economic effectiveness evaluation parameter, and determining the quality of the core sample according to the quality parameter. According to the method and the device for determining the quality of the dolomite reservoir, the accuracy of determining the quality of the dolomite reservoir can be improved.
Description
Technical field
This application involves oil-gas exploration and development technical field, in particular to a kind of dolostone reservoirs matter method for determination of amount and
Device.
Background technique
In recent years, dolostone reservoirs are increasingly becoming the important frontier of oil-gas exploration.Oil field at home is (in the Sichuan Basin, tower
Tub and Ordos Basin) dolostone reservoirs usually bury deep relatively depth and complex genesis.Under Geological background and not
The dolostone reservoirs type formed with the origin cause of formation is varied, and reservoir space usually has complicated hole, hole and crack structure, non-mean value
Property is strong.
It generally requires to assess the quality of dolostone reservoirs in oil-gas exploration, before brill, current commonly used rock
Physical property measurement data (porosity, permeability, maximum replacement pressure and pore throat radius etc.) divide the grade of reservoir quality.In this way
Method continue to use the evaluation method from mean value sandstone reservoir quality, advantage is that required data are few, using simple, is convenient for Fast Evaluation
Reservoir.But the evaluation method of mean value sandstone reservoir quality is simply covered in the assessment of dolostone reservoirs quality, as a result often
Can be inaccurate, main cause is that the non-mean value in dolostone reservoirs plane and space is all very strong, porosity type multiplicity, structure
It is complicated.
The method that oil field at home generallys use at present is exactly according to porosity and permeability value, according to the threshold values of setting and area
Between, by dolostone reservoirs quality divide preferably, in, poor three classes.As the exploration in Carbonate Oil gas field develops, practical geology feelings
The complexity of condition is increasingly prominent, and conventional method Consideration is too simple, can not often be accurately determined dolomitic reservoir matter
Amount.
It should be noted that the above description of the technical background be intended merely to it is convenient to the technical solution of the application carry out it is clear,
Complete explanation, and facilitate the understanding of those skilled in the art and illustrate.Cannot merely because these schemes the application's
Background technology part is expounded and thinks that above-mentioned technical proposal is known to those skilled in the art.
Summary of the invention
A kind of determination method and device for being designed to provide dolostone reservoirs quality of the embodiment of the present application, can be improved
Determine the accuracy of dolostone reservoirs quality.
A kind of determination method and device of dolostone reservoirs quality provided by the embodiments of the present application is achieved in that
A kind of dolostone reservoirs matter method for determination of amount, comprising: obtain dolomitic core sample to be processed；It will be described
Core sample is compared with default core model, is determined Reservoir type belonging to the core sample and is determined the reservoir class
The corresponding Reservoir type of type evaluates and tests parameter；The reservoir properties test data of the core sample is analyzed, determines the rock
The physical property of core sample evaluates and tests parameter, and the reservoir properties include porosity and/or permeability；It is thin to the body of casting of the core sample
Piece and default lithologic member are analyzed, and determine the heterogeneity evaluation and test parameter of the core sample；According to the core sample pair
The reservoir cumulative thickness and stratum bottom boundaries depth answered determine the corresponding economic validity evaluation and test parameter of the core sample；Root
Parameter is evaluated and tested according to Reservoir type evaluation and test parameter, physical property evaluation and test parameter, heterogeneity evaluation and test parameter and economic validity, really
Determine the corresponding mass parameter of the core sample, and determines the quality of the core sample according to the mass parameter.
A kind of determining device of dolostone reservoirs quality, comprising: core sample acquiring unit, it is to be processed white for obtaining
The core sample of Yun Yan；Reservoir type evaluates and tests parameter determination unit, for carrying out the core sample and default core model
Comparison determines Reservoir type belonging to the core sample and determines the corresponding Reservoir type evaluation and test parameter of the Reservoir type；
Physical property evaluates and tests parameter determination unit, analyzes for the reservoir properties test data to the core sample, determines the rock
The physical property of core sample evaluates and tests parameter, and the reservoir properties include porosity and/or permeability；Heterogeneity evaluates and tests parameter and determines list
Member, for the core sample casting body flake and default lithologic member analyze, determine the heterogeneous of the core sample
Property evaluation and test parameter；Economic validity evaluates and tests parameter determination unit, for according to the corresponding reservoir cumulative thickness of the core sample
With stratum bottom boundaries depth, the corresponding economic validity evaluation and test parameter of the core sample is determined；Quality determination unit is used for root
Parameter is evaluated and tested according to Reservoir type evaluation and test parameter, physical property evaluation and test parameter, heterogeneity evaluation and test parameter and economic validity, really
Determine the corresponding mass parameter of the core sample, and determines the quality of the core sample according to the mass parameter.
A kind of determination method and device of dolostone reservoirs quality provided by the embodiments of the present application, having comprehensively considered being capable of shadow
Ring the four factors of dolostone reservoirs quality: Reservoir type, physical data, reservoir heterogeneity and cumulative thickness and stratum bottom
Ratio between boundary depth, and different influence factors is analyzed, the corresponding evaluation and test of each factor has been obtained respectively
Parameter improves the precision that reservoir quality determines so as to comprehensively be determined to the quality of reservoir.
Referring to following description and accompanying drawings, specific implementations of the present application are disclosed in detail, specify the original of the application
Reason can be in a manner of adopted.It should be understood that presently filed embodiment is not so limited in range.In appended power
In the range of the spirit and terms that benefit requires, presently filed embodiment includes many changes, modifications and is equal.
The feature for describing and/or showing for a kind of embodiment can be in a manner of same or similar one or more
It uses in a other embodiment, is combined with the feature in other embodiment, or the feature in substitution other embodiment.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when using herein, but simultaneously
It is not excluded for the presence or additional of one or more other features, one integral piece, step or component.
Detailed description of the invention
Included attached drawing is used to provide that a further understanding of the embodiments of the present application, and which constitute one of specification
Point, for illustrating presently filed embodiment, and with verbal description come together to illustrate the principle of the application.Under it should be evident that
Attached drawing in the description of face is only some embodiments of the present application, for those of ordinary skill in the art, is not paying wound
Under the premise of the property made is laborious, it is also possible to obtain other drawings based on these drawings.In the accompanying drawings:
Fig. 1 is a kind of determination method flow diagram for dolostone reservoirs quality that the application embodiment provides；
Fig. 2 is a kind of functional block diagram of the determining device for dolostone reservoirs quality that the application embodiment provides；
Fig. 3 is the Reservoir type schematic diagram for relaxing and visiting 1 well；
Fig. 4 is the porosity distribution schematic diagram for relaxing and visiting 1 well；
Fig. 5 is the Reservoir type schematic diagram with 4 wells；
Fig. 6 is the porosity distribution schematic diagram with 4 wells；
Fig. 7 is the Permeability Distribution schematic diagram with 4 wells.
Specific embodiment
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality
The attached drawing in example is applied, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described implementation
Example is merely a part but not all of the embodiments of the present application.Based on the embodiment in the application, this field is common
The application protection all should belong in technical staff's all other embodiment obtained without making creative work
Range.
The application embodiment provides a kind of dolostone reservoirs matter method for determination of amount.Fig. 1 is that the application embodiment mentions
A kind of determination method flow diagram of the dolostone reservoirs quality supplied.Although it includes with the more of particular order appearance that process, which is described below,
A operation, but it should be clearly understood that these processes may include more or fewer operations, these operations can be executed sequentially
Or parallel execution (such as using parallel processor or multi-thread environment).As shown in Figure 1, the method may include following
Step.
Step S1: dolomitic core sample to be processed is obtained.
In the present embodiment, the well of preset quantity can be laid in region to be explored, so as to obtain from well
Dolomitic core sample.In practical application scene, two mouthfuls of wells of Tarim Basin can be analyzed.Wherein, flatly
Well can visit 1 well to relax, and another a well can be and 4 wells.This two mouthfuls of wells all can be Cambrian dolomite section.In this embodiment party
In formula, one section of core sample respectively can be obtained from this two mouthfuls of wells respectively.It is subsequent that this two sections of core samples can be carried out respectively
Analysis, therefore, it is determined that the reservoir quality of this two sections of core samples.
Step S2: the core sample and default core model are compared, determine storage belonging to the core sample
Channel type simultaneously determines that the corresponding Reservoir type of the Reservoir type evaluates and tests parameter.
In the present embodiment, core model can be preset.The core model can according to hole, hole and
The size and shape in crack is divided.Specifically, the hole can be determined according to major diameter.For example, some rock
The major diameter of the hole of core model can be 0.5mm.
In the present embodiment, between each different core model, hole, hole or the size and shape in gap can
It can also be not quite similar, therefore, in the present embodiment, each different rock can be characterized by hole, hole or gap
Core model.
In the present embodiment, the dolomitic core sample that can be will acquire is compared with default core model, from
And can determine whether the core sample is consistent with default core model, the core sample institute can be determined in this way
The Reservoir type of category.Specifically, in the present embodiment, the reservoir characteristic of the core sample can be extracted.The reservoir is special
Sign includes at least one of pore character, Porous Characteristic and gap characteristic.It may include hole, hole in the reservoir characteristic
Or the size and shape in gap.In this way, the fixed reference feature of the reservoir characteristic of extraction and default core model is carried out pair
Than so as to judge whether the core sample matches with the default core model.
In the present embodiment, the related coefficient between the reservoir characteristic and the fixed reference feature can be calculated.Specifically
Ground, the reservoir characteristic can indicate with the fixed reference feature by way of vector, each element in vector
To reflect the feature of core.So, in the present embodiment, the reservoir characteristic and the ginseng can be calculated according to the following equation
Examine the related coefficient between feature:
Wherein, γ indicates the related coefficient between the reservoir characteristic and the fixed reference feature, xiIndicate that the reservoir is special
I-th of element in the vector of sign, yiIndicate i-th of element in the vector of the fixed reference feature,Indicate the reservoir characteristic
Vector in each element average value,Indicate that the average value of each element in the vector of the fixed reference feature, n are the storage
The number of element in the vector of layer feature and the vector of the fixed reference feature.
In this way, after calculating the related coefficient between the reservoir characteristic and the fixed reference feature, can pass through by
The related coefficient of calculating is compared with preset threshold, when the related coefficient of calculating is more than or equal to the preset threshold,
It can think that the reservoir characteristic matches with the fixed reference feature.In this way, can determine the core sample with it is described
The Reservoir type of default core model is consistent.
In practical application scene, as shown in Figure 3 and Figure 5, Fig. 3 is the Reservoir type schematic diagram for relaxing and visiting 1 well, and Fig. 5 is and 4
The Reservoir type schematic diagram of well.The easypro type for visiting 1 well can be hole type, and described and 4 wells types can be hole
Type.It in the present embodiment, can in advance be the reservoir established standards value of each type.The standard value can be from 1 to 100
Number.For example, corresponding standard value can be 85 for the reservoir of pore type,；And for the reservoir of hole type, it is right
The standard value answered can be 90.
In the present embodiment, there are many factors for influencing reservoir quality, and Reservoir type here can be therein one
Kind.In the present embodiment, a weight coefficient can be distributed for each influence factor, in this way, by determining standard value and phase
The weight coefficient answered is multiplied, and can obtain the corresponding Reservoir type evaluation and test parameter of each Reservoir type.
For example, in the present embodiment, the corresponding weight coefficient of the reservoir of each type is 0.25, then for hole
For the reservoir of type, corresponding Reservoir type evaluation and test parameter is 90*25%=22.5；And for the reservoir of pore type,
Its corresponding Reservoir type evaluation and test parameter is 85*25%=21.25.In this way, different Reservoir types, corresponding Reservoir type
Evaluation and test parameter can also be different.
Step S3: the reservoir properties test data of the core sample is analyzed, determines the object of the core sample
Property evaluation and test parameter, the reservoir properties include porosity and/or permeability.
In the present embodiment, the physical data of reservoir is also a key factor for influencing reservoir quality.It therefore, can be with
The reservoir properties test data of the core sample is analyzed, may thereby determine that the corresponding reservoir object of the core sample
Property main body section, main body average value in interval, physical property maximum value are with transitivity minimum value.Wherein, the physical property include porosity and/
Or permeability.It should be noted that it may be provided simultaneously with porosity data and permeability data for some reservoirs,
And for some reservoirs, may only have porosity data.Referring to Fig. 4, Fig. 4 is the porosity point for relaxing and visiting 1 well
Cloth schematic diagram.For relaxing and visiting 1 well, only having a porosity data, corresponding porosity main body section is 10~
18%, main body average value in interval is 10.77%, and porosity maximum value is 22.49%, and porosity minimum value is 0.5%.It please refers to
Fig. 6 and Fig. 7, Fig. 6 are the porosity distribution schematic diagrams with 4 wells, and Fig. 7 is the Permeability Distribution schematic diagram with 4 wells.For with 4 wells
For, it is provided simultaneously with porosity data and permeability data, corresponding porosity main body section is 0~2%, main body section
Average value is 1.4%, and porosity maximum value is 16.6%, and porosity minimum value is 0.56%；Permeability main body corresponding with 4 wells
Section is 0.01~1 × 10-3μm2, main body average value in interval is 0.7 × 10-3μm2, permeability maximum value is 94 × 10-3μm2, seep
Saturating rate minimum value is 0.012 × 10-3μm2。
In the present embodiment, for different physical parameters, corresponding weight coefficient be can also be different.For example, In
In porosity data, (porosity main body section, main body average value in interval, porosity maximum value and porosity are minimum for each parameter
Value) corresponding weight coefficient is followed successively by 23%, 8%, 2% and 2%；In permeability data, permeability main body section, body region
Between average value, permeability maximum value and the corresponding weight coefficient of permeability minimum value be followed successively by 10%, 3%, 1% and 1%.
And for different physical parameters, according to the size of physical parameter value, also tend to divide different standard values, standard value
Range be from 1 to 100 between numerical value, each parameter assigns different standard values using the method for comparison scale, specifically, statistics
Determine that maximum value, minimum value, main body section and the main body section of certain reservoir physical parameter of specific oil-gas bearing basin are average
Value, as scale section, is divided into 100 equal portions, when each physical parameter of reservoir falls in some range in scale section,
It can determine the corresponding standard value of respective range, this method be all made of in the application and determines each parameter (containing subparameter)
Standard value.For example, for relaxing and visiting 1 well, porosity main body section, main body average value in interval, porosity maximum value and hole
The corresponding standard value of porosity minimum value is respectively 85,80,90 and 50.For with 4 wells, porosity main body section, main body
Average value in interval, porosity maximum value and the corresponding standard value of porosity minimum value are respectively 60,70,80 and 50, permeability
Main body section, main body average value in interval, permeability maximum value and the corresponding standard value of permeability minimum value be respectively 60,65,
70 and 50.
In the present embodiment, it equally can use standard value and obtain each physical parameter multiplied by corresponding weight coefficient
The corresponding evaluation parameter of each physical parameter may finally be added, so as to obtain the core by corresponding evaluation parameter
The physical property of sample evaluates and tests parameter.Wherein, the physical property evaluation and test parameter includes porosity evaluation and test parameter and/or permeability evaluation and test ginseng
Number.
It specifically,, can will be in porosity data since it does not have permeability data for relaxing and visiting 1 well
4 standard values be applied in 4 physical parameters of permeability.The corresponding physical property evaluation and test of 1 well is visited in this way, may finally obtain relaxing
Parameter is 85* (23%+10%)+80* (8%+3%)+90* (2%+1%)+50* (2%+1%)=41.05.For with 4 wells
For, corresponding porosity evaluation and test parameter is 60 × 23%+70 × 8%+80 × 2%+50 × 2%=22, corresponding infiltration
Saturating rate evaluation and test parameter is 60 × 10%+65 × 3%+70 × 1%+50 × 1%=9.15, therefore its corresponding physical parameter is 22
+ 9.15=31.15.
Step S4: casting body flake and default lithologic member to the core sample are analyzed, and determine the core sample
This heterogeneity evaluates and tests parameter.
In the present embodiment, the casting body flake of the core sample can be analyzed, so as to described in determination
The Areal porosity of core sample.It is analyzed it is possible to further the default lithologic member to the core sample, determines the core
The pore volume ratio of sample.The default lithologic member can be the typical lithologic member in the core sample, specifically can be with
The pore volume ratio is determined by the method for CT scan.For example, corresponding Areal porosity is 41% for relaxing and visiting 1 well,
Pore volume ratio is 21%；And for 4 wells, corresponding Areal porosity is 4%, and pore volume ratio is 9%.
In the present embodiment, for different Areal porosity and pore volume ratios, different standard values can often be corresponded to.
The standard value can be more directly proportional than size to Areal porosity and pore volume.Areal porosity and the pore volume comparison of 1 well are visited for example, relaxing
The standard value answered is respectively 90 and 90, and is respectively 55 and 60 than corresponding standard value with the Areal porosity of 4 wells and pore volume.
In the present embodiment, Areal porosity and pore volume ratio also respectively correspond a weight coefficient, for example, Areal porosity
Weight coefficient be 6%, the weight coefficient of pore volume ratio is 9%.In this way, standard value is multiplied with corresponding weight coefficient,
It can determine the corresponding Areal porosity evaluation and test parameter of the Areal porosity and determine the corresponding volume ratio of the pore volume ratio
Evaluate and test parameter.By the results added after multiplication, parameter can be evaluated and tested according to the Areal porosity and volume ratio evaluation and test parameter determines
The heterogeneity of the core sample evaluates and tests parameter.
Specifically, the corresponding heterogeneity evaluation and test parameter of 1 well of the easypro spy can be 90*6%+90*9%=13.5 and 4
The corresponding heterogeneity evaluation and test parameter of well can be 55 × 6%+60 × 9%=8.7.
Step S5: according to the corresponding reservoir cumulative thickness of the core sample and stratum bottom boundaries depth, the rock is determined
The corresponding economic validity of core sample evaluates and tests parameter.
In the present embodiment, reservoir cumulative thickness is bigger, and stratum bottom boundaries depth is smaller, then the cost that drilling well is paid
With regard to smaller, the output value is also bigger.Therefore, the ratio between the corresponding reservoir cumulative thickness of core sample and stratum bottom boundaries depth with
And reservoir cumulative thickness can be an important factor for influencing reservoir quality.In the present embodiment, can according to log data,
Obtain the corresponding reservoir cumulative thickness of core sample and stratum bottom boundaries depth.For example, the 1 well reservoir cumulative thickness of spy that relaxes is 61
Rice, stratum bottom boundaries depth are 2110 meters, and the ratio between corresponding reservoir cumulative thickness and stratum bottom boundaries depth is
2.89%；With 4 well reservoir cumulative thickness be 79 meters, stratum bottom boundaries depth be 5800 meters, corresponding reservoir cumulative thickness and
Ratio between the bottom boundaries depth of stratum is 1.36%.
In the present embodiment, different ratio can correspond to different standard values, and different reservoir cumulative thickness can also
With the different standard value of correspondence.Ratio is bigger, and standard value can also be bigger；Reservoir cumulative thickness value is bigger, and standard value can also be with
It is bigger.For example, the corresponding standard value of ratio for 1 well of spy that relaxes can be 90, the corresponding standard value of reservoir cumulative thickness can be 90；
Standard value corresponding with the ratio of 4 wells can be 55, and the corresponding standard value of reservoir cumulative thickness can be 90.
In the present embodiment, ratio and reservoir cumulative thickness can correspond to different weight coefficients.For example, ratio is corresponding
Weight coefficient can be 3%, the corresponding weight coefficient of reservoir cumulative thickness can be 7%.In this way, by by standard value multiplied by
Corresponding weight coefficient can obtain the corresponding economic validity evaluation and test parameter of the core sample.Specifically, it is visited for relaxing
For 1 well, corresponding economic validity evaluation and test parameter can be 90 × 3%+90 × 7%=9；It is right for 4 wells
The economic validity evaluation and test parameter answered can be 55 × 3%+90 × 7%=7.95.
Step S6: parameter, physical property evaluation and test parameter, heterogeneity evaluation and test parameter and economy are evaluated and tested according to the Reservoir type
Validity evaluates and tests parameter, determines the corresponding mass parameter of the core sample, and determine the core according to the mass parameter
The quality of sample.
In the present embodiment, above-mentioned four kinds evaluation and test parameters can reflect the quality of reservoir quality, and parameter value
It is bigger, indicate that reservoir quality is better.It is commented in this way, the Reservoir type can be evaluated and tested to parameter, physical property evaluation and test parameter, heterogeneity
The summation for surveying parameter and economic validity evaluation and test parameter is determined as the corresponding mass parameter of the core sample.1 is visited for relaxing
For well, the summation of corresponding evaluation and test parameter is 86.05；For with 4 wells, corresponding evaluation and test parameter is 69.05.This
Sample, the application can predefine the corresponding relationship between the quality of core sample and parameter section.For example, for evaluating and testing parameter
Summation between 80 to 100, corresponding reservoir be first kind reservoir.For evaluating and testing the summation of parameter between 60 to 80
, corresponding reservoir is the second class reservoir.In this way, can be incited somebody to action when the mass parameter is located in target component section
The corresponding aimed quality in the target component section is determined as the corresponding quality of the core sample.Therefore, it relaxes and visits the core of 1 well
Sample belongs to first kind reservoir and the core sample of 4 wells belongs to the second class reservoir.
Referring to Fig. 2, the application provides a kind of determining device of dolostone reservoirs quality.The apparatus may include:
Core sample acquiring unit 100, for obtaining dolomitic core sample to be processed；
Reservoir type evaluates and tests parameter determination unit 200, for the core sample and default core model to be compared,
It determines Reservoir type belonging to the core sample and determines the corresponding Reservoir type evaluation and test parameter of the Reservoir type；
Physical property evaluates and tests parameter determination unit 300, analyzes for the reservoir properties test data to the core sample,
Determine the physical property evaluation and test parameter of the core sample, the reservoir properties include porosity and/or permeability；
Heterogeneity evaluates and tests parameter determination unit 400, for the casting body flake and default lithologic member to the core sample
It is analyzed, determines the heterogeneity evaluation and test parameter of the core sample；
Economic validity evaluates and tests parameter determination unit 500, for according to the corresponding reservoir cumulative thickness of the core sample
Ratio between the bottom boundaries depth of stratum determines the corresponding economic validity evaluation and test parameter of the core sample；
Quality determination unit 600 is commented for evaluating and testing parameter, physical property evaluation and test parameter, heterogeneity according to the Reservoir type
It surveys parameter and economic validity evaluates and tests parameter, determine the corresponding mass parameter of the core sample, and join according to the quality
Number determines the quality of the core sample.
In one preferred embodiment of the application, the Reservoir type evaluation and test parameter determination unit 200 is specifically included:
Characteristic extracting module, for extracting the reservoir characteristic of the core sample, and by the reservoir characteristic of extraction with
The fixed reference feature of preset multiple core models compares；
Reservoir type determining module, for determining the consistent core of reservoir characteristic of fixed reference feature Yu the core sample
Model, and using the core model determined reservoir as the reservoir of the core sample, wherein the reservoir characteristic packet
Include at least one of pore character, Porous Characteristic and gap characteristic.
In one preferred embodiment of the application, the physical property evaluation and test parameter determination unit 300 is specifically included:
Reservoir properties determining module is analyzed for the reservoir properties test data to the core sample, determines institute
Core sample corresponding reservoir properties main body section, main body average value in interval, physical property maximum value are stated with transitivity minimum value；
Parameter determination module, for according to reservoir properties main body section, main body average value in interval, physical property maximum value,
Physical property minimum value and corresponding weight coefficient determine the physical property evaluation and test parameter of the core sample.
In one preferred embodiment of the application, the heterogeneity evaluation and test parameter determination unit 400 is specifically included:
Areal porosity determining module is analyzed for the casting body flake to the core sample, determines the core sample
Areal porosity；
Pore volume ratio determining module is analyzed for the default lithologic member to the core sample, described in determination
The pore volume ratio of core sample；
Parameter determination module is evaluated and tested, for determining the corresponding Areal porosity evaluation and test parameter of the Areal porosity and the pore volume
The corresponding volume ratio of ratio evaluates and tests parameter, and evaluates and tests parameter according to Areal porosity evaluation and test parameter, volume ratio and respectively correspond to
Weight coefficient, determine the core sample heterogeneity evaluation and test parameter.
It should be noted that the specific implementation of above-mentioned each functional module is consistent with step S1 to S6, here just
It repeats no more.Therefore a kind of determination method and device of dolostone reservoirs quality provided by the embodiments of the present application, synthesis are examined
The four factors that can influence dolostone reservoirs quality: Reservoir type, physical data, reservoir heterogeneity and accumulative thickness are considered
Ratio between degree and stratum bottom boundaries depth, and different influence factors is analyzed, each factor has been obtained respectively
Corresponding evaluation and test parameter improves the precision that reservoir quality determines so as to comprehensively be determined to the quality of reservoir.
Those skilled in the art are supplied to the purpose described to the description of the various embodiments of the application above.It is not
It is intended to exhaustion or be not intended to and limit the invention to single disclosed embodiment.As described above, the application's is various
Substitution and variation will be apparent for above-mentioned technology one of ordinary skill in the art.Therefore, although specifically begging for
Some alternative embodiments are discussed, but other embodiment will be apparent or those skilled in the art are opposite
It is easy to obtain.The application is intended to include all substitutions of the invention discussed herein, modification and variation, and falls in
Other embodiment in the spirit and scope of above-mentioned application.
It is also known in the art that other than the realization device in a manner of pure computer readable program code, completely
Can by by method and step carry out programming in logic come so that device with logic gate, switch, specific integrated circuit, programmable logic
Controller realizes identical function with the form for being embedded in microcontroller etc..Therefore this device is considered a kind of Hardware Subdivision
Part, and the structure that the unit and module for realizing various functions for including in it can also be considered as in hardware component.Or
Even, can will be considered as realizing the unit of various functions and module either the software module of implementation method can be again
Structure in hardware component.
Device, module or the unit that above-described embodiment illustrates can specifically be realized, Huo Zheyou by computer chip or entity
Product with certain function is realized.
For convenience of description, it is divided into various units when description apparatus above with function to describe respectively.Certainly, implementing this
The function of each unit can be realized in the same or multiple software and or hardware when application.
As seen through the above description of the embodiments, those skilled in the art can be understood that the application can
It realizes by means of software and necessary general hardware platform.Based on this understanding, the technical solution essence of the application
On in other words the part that contributes to existing technology can be embodied in the form of software products, the computer software product
It can store in storage medium, such as ROM/RAM, magnetic disk, CD, including some instructions are used so that a computer equipment
(can be personal computer, server or the network equipment etc.) executes the certain of each embodiment of the application or embodiment
Method described in part.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for device reality
For applying example, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring to embodiment of the method
Part explanation.
The application can be used in numerous general or special purpose computing system environments or configuration.Such as: personal computer, clothes
Business device computer, handheld device or portable device, laptop device, multicomputer system, microprocessor-based system, set
Top box, programmable consumer-elcetronics devices, network PC, minicomputer, mainframe computer including any of the above system or equipment
Distributed computing environment etc..
The application can describe in the general context of computer-executable instructions executed by a computer, such as program
Module.Generally, program module includes routines performing specific tasks or implementing specific abstract data types, programs, objects, group
Part, data structure etc..The application can also be practiced in a distributed computing environment, in these distributed computing environments, by
Task is executed by the connected remote processing devices of communication network.In a distributed computing environment, program module can be with
In the local and remote computer storage media including storage equipment.
Although depicting the application by embodiment, it will be appreciated by the skilled addressee that the application there are many deformation and
Variation is without departing from spirit herein, it is desirable to which the attached claims include these deformations and change without departing from the application's
Spirit.
Claims (8)
1. a kind of dolostone reservoirs matter method for determination of amount characterized by comprising
Obtain dolomitic core sample to be processed；
The core sample and default core model are compared, determine Reservoir type belonging to the core sample and determination
The corresponding Reservoir type of the Reservoir type evaluates and tests parameter；
The reservoir properties test data of the core sample is analyzed, determines the physical property evaluation and test parameter of the core sample,
The reservoir properties include porosity and/or permeability；The reservoir properties test data to the core sample is divided
Analysis determines that the physical property evaluation and test parameter of the core sample includes: to divide the reservoir properties test data of the core sample
Analysis, determines the core sample corresponding reservoir properties main body section, main body average value in interval, physical property maximum value with transitivity most
Small value；According to reservoir properties main body section, main body average value in interval, physical property maximum value and physical property minimum value, and respectively
Corresponding weight coefficient determines the physical property evaluation and test parameter of the core sample；
Casting body flake and default lithologic member to the core sample are analyzed, and determine that the heterogeneity of the core sample is commented
Survey parameter；
According to the corresponding reservoir cumulative thickness of the core sample and stratum bottom boundaries depth, determine that the core sample is corresponding
Economic validity evaluates and tests parameter；
Parameter, physical property evaluation and test parameter, heterogeneity evaluation and test parameter and economic validity evaluation and test are evaluated and tested according to the Reservoir type
Parameter determines the corresponding mass parameter of the core sample, and the quality of the core sample is determined according to the mass parameter.
2. the method according to claim 1, wherein the core sample and default core model are carried out pair
Than determining that Reservoir type belonging to the core sample specifically includes:
Extract the reservoir characteristic of the core sample, and by the ginseng of the reservoir characteristic of extraction and preset multiple core models
It examines feature to compare, determines the consistent core model of reservoir characteristic of fixed reference feature Yu the core sample；
Using the core model determined reservoir as the reservoir of the core sample, wherein the reservoir characteristic includes
At least one of pore character, Porous Characteristic and gap characteristic.
3. the method according to claim 1, wherein casting body flake and default lithology to the core sample
Duan Jinhang analysis determines that the heterogeneity evaluation and test parameter of the core sample specifically includes:
The casting body flake of the core sample is analyzed, determines the Areal porosity of the core sample；
The default lithologic member of the core sample is analyzed, determines the pore volume ratio of the core sample；
Determine the corresponding Areal porosity evaluation and test parameter of the Areal porosity and the corresponding volume ratio evaluation and test parameter of the pore volume ratio；
Parameter is evaluated and tested according to the Areal porosity and volume ratio evaluates and tests parameter, determines the heterogeneity evaluation and test ginseng of the core sample
Number.
4. the method according to claim 1, wherein economic validity evaluation and test parameter includes the core sample
Ratio between this corresponding reservoir cumulative thickness and corresponding stratum bottom boundaries depth.
5. the method according to claim 1, wherein evaluating and testing parameter, physical property evaluation and test ginseng according to the Reservoir type
Number, heterogeneity evaluation and test parameter and economic validity evaluate and test parameter, determine that the corresponding mass parameter of the core sample is specific
Include:
The Reservoir type is evaluated and tested into parameter, physical property evaluation and test parameter, heterogeneity evaluation and test parameter and economic validity evaluation and test ginseng
Several summations is determined as the corresponding mass parameter of the core sample.
6. the method according to any one of claims 1 to 5, which is characterized in that according to mass parameter determination
The quality of core sample specifically includes:
Predefine the corresponding relationship between the quality and parameter section of core sample；
When the mass parameter is located in target component section, the corresponding aimed quality in the target component section is determined as
The corresponding quality of the core sample.
7. a kind of determining device of dolostone reservoirs quality characterized by comprising
Core sample acquiring unit, for obtaining dolomitic core sample to be processed；
Reservoir type evaluates and tests parameter determination unit and determines institute for comparing the core sample and default core model
It states Reservoir type belonging to core sample and determines the corresponding Reservoir type evaluation and test parameter of the Reservoir type；
Physical property evaluates and tests parameter determination unit, analyzes for the reservoir properties test data to the core sample, determines institute
The physical property evaluation and test parameter of core sample is stated, the reservoir properties include porosity and/or permeability；It is described to the core sample
Reservoir properties test data analyzed, determine the core sample physical property evaluation and test parameter include: to the core sample
Reservoir properties test data analyzed, determine that the core sample corresponding reservoir properties main body section, main body section are flat
Mean value, physical property maximum value are with transitivity minimum value；Most according to reservoir properties main body section, main body average value in interval, physical property
Big value and physical property minimum value and corresponding weight coefficient determine the physical property evaluation and test parameter of the core sample；
Heterogeneity evaluate and test parameter determination unit, for the core sample casting body flake and default lithologic member divide
Analysis determines the heterogeneity evaluation and test parameter of the core sample；
Economic validity evaluates and tests parameter determination unit, for according to the corresponding reservoir cumulative thickness of the core sample and accordingly
Layer bottom boundaries depth determines the corresponding economic validity evaluation and test parameter of the core sample；
Reservoir quality determination unit, for evaluating and testing parameter, physical property evaluation and test parameter, heterogeneity evaluation and test ginseng according to the Reservoir type
Several and economic validity evaluates and tests parameter, determines the corresponding mass parameter of the core sample, and true according to the mass parameter
The quality of the fixed core sample.
8. device according to claim 7, which is characterized in that the Reservoir type evaluation and test parameter determination unit specifically wraps
It includes:
Characteristic extracting module for extracting the reservoir characteristic of the core sample, and by the reservoir characteristic of extraction and is preset
The fixed reference features of multiple core models compare；
Reservoir type determining module, for determining the consistent core mould of reservoir characteristic of fixed reference feature Yu the core sample
Type, and using the core model determined reservoir as the reservoir of the core sample, wherein the reservoir characteristic includes
At least one of pore character, Porous Characteristic and gap characteristic.
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| CN107133442B (en) * | 2017-03-21 | 2020-04-10 | 中国石油天然气股份有限公司 | Dolomite formation stage identification method and device |
| CN107219159B (en) * | 2017-04-19 | 2019-07-09 | 中国石油天然气股份有限公司 | Method and device for determining reservoir heterogeneity |
| CN107679338B (en) * | 2017-10-20 | 2021-03-19 | 合肥工业大学 | Reservoir fracturing effect evaluation method and evaluation system based on flowback data |
| CN108825216A (en) * | 2018-04-03 | 2018-11-16 | 中国石油天然气股份有限公司 | Method for quantitatively evaluating carbonate gas reservoir development potential area |
| CN110389099A (en) * | 2018-04-23 | 2019-10-29 | 中国石油大学(北京) | The modification method and device of reservoir properties |
| CN114113083B (en) * | 2021-11-10 | 2024-01-19 | 中国石油大学(北京) | Method, device, medium, device, and program product for evaluating conglomerate heterogeneity |
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