CN109828098A - The determination method, apparatus and storage medium of Heterogeneous reservoir Aggregation indica coefficient - Google Patents
The determination method, apparatus and storage medium of Heterogeneous reservoir Aggregation indica coefficient Download PDFInfo
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Abstract
This application discloses a kind of determination method, apparatus of Heterogeneous reservoir Aggregation indica coefficient and storage mediums, belong to oil-gas exploration and development field.This method comprises: determining the intermediate value depth of Heterogeneous reservoir.According to the intermediate value depth of Heterogeneous reservoir, determine each single lithologic reservoir in Heterogeneous reservoir at hiding porosity cutoff.According to single lithologic reservoir each in Heterogeneous reservoir at hiding porosity cutoff, the displacement pressure lower limit of each single lithologic reservoir in Heterogeneous reservoir is determined.According to the displacement pressure lower limit of single lithologic reservoir each in Heterogeneous reservoir, to obtain the displacement pressure lower limit of Heterogeneous reservoir.The Aggregation indica coefficient of Heterogeneous reservoir is determined by the displacement pressure lower limit of Heterogeneous reservoir.The application can determine the Aggregation indica coefficient of Heterogeneous reservoir, for the complexity for judging Aggregation indica by the displacement pressure lower limit of single lithology, improve the accuracy of judging result.
Description
Technical field
This application involves oil-gas exploration and development field, in particular to a kind of determination of Heterogeneous reservoir Aggregation indica coefficient
Method, apparatus and storage medium.
Background technique
Oil and natural gas is the indispensable strategic resource of national survival and development, is sent out guarantee national economy and society
Exhibition and national defense safety have immeasurable effect.Oil and natural gas is from after hydrocarbon source rock generation, into migrating in reservoir
And Aggregation indica.Capillary force, the viscous force of rock and adsorption capacity can be as oil gas at hiding resistance, and capillary force is
At the main body of hiding resistance, and capillary force is bigger, and the difficulty of oil and gas accumulation is also bigger.So determining the big of capillary force
It is small to most important a possibility that judging oil and gas accumulation.The displacement pressure for mostly using pressure mercury experimental calculation to obtain in the past carrys out table
Capillary force is levied, displacement pressure is bigger, and capillary force is bigger.Since experimental data is limited, so the displacement pressure being calculated
The displacement pressure at the sampled point, or the displacement pressure of the single lithology homogeneous reservoir of characterization can only be characterized.But under practically
In situation, the heterogeneous reservoir that more lithology are constituted is only the main body of reservoir, so, with the displacement pressure of single lithology homogeneous reservoir
Not accurate enough come the displacement pressure that characterizes more lithologic heterogeneity reservoirs, precision is not high, thus a possibility that oil and gas accumulation
Judgement with regard to not accurate enough.
Summary of the invention
The embodiment of the present application provides a kind of determination method, apparatus of Heterogeneous reservoir Aggregation indica coefficient and storage is situated between
Matter, a possibility that can solve oil and gas accumulation, judge not accurate enough problem.The technical solution is as follows:
In a first aspect, providing a kind of determination method of Heterogeneous reservoir Aggregation indica coefficient, which comprises
Determine that the intermediate value depth of Heterogeneous reservoir, the intermediate value depth refer in the thickness of the Heterogeneous reservoir
Between positional distance earth's surface depth；
According to the intermediate value depth of the Heterogeneous reservoir, and storage multiple single lithology first kind lithology system
Number, determine each single lithologic reservoir in the Heterogeneous reservoir at hiding porosity cutoff；
According to single lithologic reservoir each in the Heterogeneous reservoir at the second of hiding porosity cutoff, and storage
Class lithology factor determines the displacement pressure lower limit of each single lithologic reservoir in the Heterogeneous reservoir；
According to the displacement pressure lower limit of single lithologic reservoir each in the Heterogeneous reservoir and the heterogeneity
Each single lithologic reservoir accounts for the thickness proportion of the Heterogeneous reservoir in reservoir, is weighted, described non-to obtain
The displacement pressure lower limit of homogenieity reservoir；
The Aggregation indica coefficient of the Heterogeneous reservoir is determined by the displacement pressure lower limit of the Heterogeneous reservoir,
The Aggregation indica coefficient is used to indicate the complexity of the Aggregation indica of the Heterogeneous reservoir.
Optionally, the intermediate value depth according to the Heterogeneous reservoir, and storage multiple single lithology the
A kind of lithology factor, determine each single lithologic reservoir in the Heterogeneous reservoir at hiding porosity cutoff, comprising:
For any single lithologic reservoir A in the Heterogeneous reservoir, from the first of multiple single lithology of storage
In class lithology factor, the first kind lithology factor of the single lithologic reservoir A is obtained；
According to the intermediate value depth of the Heterogeneous reservoir and the first kind lithology factor of the single lithologic reservoir A,
By following first formula, determine the single lithologic reservoir A at hiding porosity cutoff；
First formula: Φn=anln(H)+bn
Wherein, the ΦnRefer to the single lithologic reservoir A at hiding porosity cutoff, an、bnRefer to the list
The first kind lithology factor of one lithologic reservoir A, the H refer to the intermediate value depth.
Optionally, it is described according to single lithologic reservoir each in the Heterogeneous reservoir at hiding porosity cutoff, with
And the second class lithology factor of storage, determine the displacement pressure lower limit of each single lithologic reservoir in the Heterogeneous reservoir,
Include:
For any single lithologic reservoir A in the Heterogeneous reservoir, according to the single lithologic reservoir A at hiding
Porosity cutoff, and the second class lithology factor of storage determine the single lithologic reservoir A's according to following second formula
Displacement pressure lower limit；
Second formula:
Wherein, the PnRefer to that the displacement pressure lower limit of the single lithologic reservoir A, described c, d refer to second class
Lithology factor.
Optionally, the displacement pressure lower limit according to single lithologic reservoir each in the Heterogeneous reservoir, and
Each single lithologic reservoir accounts for the thickness proportion of the Heterogeneous reservoir in the Heterogeneous reservoir, is weighted,
To obtain the displacement pressure lower limit of the Heterogeneous reservoir, comprising:
According to the displacement pressure lower limit of single lithologic reservoir each in the Heterogeneous reservoir and the heterogeneity
Each single lithologic reservoir accounts for the thickness proportion of the Heterogeneous reservoir in reservoir, by following third formula, determine described in
The displacement pressure lower limit of Heterogeneous reservoir；
Third formula: P=XP1+YP2+ZP3+...+NPn(X+Y+Z+...+N=1)
Wherein, the P refers to the displacement pressure lower limit of the Heterogeneous reservoir, the P1, P2, P3...PnIt is described each
The displacement pressure lower limit of a single lithologic reservoir, the X, Y, Z...N account for described heterogeneous for each single lithologic reservoir
The thickness proportion of property reservoir.
Optionally, the displacement pressure lower limit by the Heterogeneous reservoir determines the poly- of the Heterogeneous reservoir
Integrated hiding coefficient, comprising:
According to the displacement pressure lower limit of the Heterogeneous reservoir and the displacement pressure lower limit of sandstone reservoir, under
The 4th formula is stated, determines the Aggregation indica coefficient of the Heterogeneous reservoir；
4th formula: f=P/PSandstone
Wherein, the f is the Aggregation indica coefficient of the Heterogeneous reservoir, and the P refers to the Heterogeneous reservoir
Displacement pressure lower limit, the PSandstoneRefer to the displacement pressure lower limit of the sandstone reservoir.
Second aspect, provides a kind of determining device of Heterogeneous reservoir Aggregation indica coefficient, and described device includes:
First determining module, for determining that the intermediate value depth of Heterogeneous reservoir, the intermediate value depth refer to described non-equal
Depth of the middle position of the thickness of matter reservoir apart from earth's surface；
Second determining module, for the intermediate value depth according to the Heterogeneous reservoir, and multiple single rocks of storage
Property first kind lithology factor, determine each single lithologic reservoir in the Heterogeneous reservoir at hiding porosity cutoff；
Third determining module, for according to single lithologic reservoir each in the Heterogeneous reservoir under hiding porosity
Limit, and the second class lithology factor of storage, determine the displacement pressure of each single lithologic reservoir in the Heterogeneous reservoir
Lower limit；
Ranking operation module, under the displacement pressure according to single lithologic reservoir each in the Heterogeneous reservoir
Each single lithologic reservoir accounts for the thickness proportion of the Heterogeneous reservoir in limit and the Heterogeneous reservoir, is added
Operation is weighed, to obtain the displacement pressure lower limit of the Heterogeneous reservoir；
4th determining module determines the heterogeneity storage for the displacement pressure lower limit by the Heterogeneous reservoir
The Aggregation indica coefficient of layer, the Aggregation indica coefficient are used to indicate the difficulty or ease journey of the Aggregation indica of the Heterogeneous reservoir
Degree.
Optionally, second determining module includes:
Acquisition submodule, for for any single lithologic reservoir A in the Heterogeneous reservoir, from the multiple of storage
In the first kind lithology factor of single lithology, the first kind lithology factor of the single lithologic reservoir A is obtained；
First determines submodule, for being stored up according to the intermediate value depth and the single lithology of the Heterogeneous reservoir
The first kind lithology factor of layer A, by following first formula, determine the single lithologic reservoir A at hiding porosity cutoff；
First formula: Φn=anln(H)+bn
Wherein, the ΦnRefer to the single lithologic reservoir A at hiding porosity cutoff, an、bnRefer to the list
The first kind lithology factor of one lithologic reservoir A, the H refer to the intermediate value depth.
Optionally, the third determining module includes:
Second determines submodule, for for any single lithologic reservoir A in the Heterogeneous reservoir, according to described
Single lithologic reservoir A's determines at hiding porosity cutoff, and the second class lithology factor of storage according to following second formula
The displacement pressure lower limit of the single lithologic reservoir A；
Second formula:
Wherein, the PnRefer to that the displacement pressure lower limit of the single lithologic reservoir A, described c, d refer to second class
Lithology factor.
Optionally, the ranking operation module, comprising:
Third determines submodule, under the displacement pressure according to single lithologic reservoir each in the Heterogeneous reservoir
Each single lithologic reservoir accounts for the thickness proportion of the Heterogeneous reservoir in limit and the Heterogeneous reservoir, under
Third formula is stated, determines the displacement pressure lower limit of the Heterogeneous reservoir；
Third formula: P=XP1+YP2+ZP3+...+NPn(X+Y+Z+...+N=1)
Wherein, the P refers to the displacement pressure lower limit of the Heterogeneous reservoir, the P1, P2, P3...PnIt is described each
The displacement pressure lower limit of a single lithologic reservoir, the X, Y, Z...N account for described heterogeneous for each single lithologic reservoir
The thickness proportion of property reservoir.
Optionally, the 4th determining module, comprising:
4th determines submodule, for according to the displacement pressure lower limit of the Heterogeneous reservoir and sandstone reservoir
Displacement pressure lower limit determines the Aggregation indica coefficient of the Heterogeneous reservoir according to following 4th formula；
4th formula: f=P/PSandstone
Wherein, the f is the Aggregation indica coefficient of the Heterogeneous reservoir, and the P refers to the Heterogeneous reservoir
Displacement pressure lower limit, the PSandstoneRefer to the displacement pressure lower limit of the sandstone reservoir.
The third aspect provides a kind of computer readable storage medium, is stored with computer program in the storage medium,
The computer program realizes any method that above-mentioned first aspect provides when being executed by processor.
Technical solution bring beneficial effect provided by the embodiments of the present application includes at least: in the embodiment of the present application, for
For Heterogeneous reservoir, can first determine each single lithologic reservoir in Heterogeneous reservoir at hiding porosity cutoff.Root
According to each single lithologic reservoir at hiding porosity cutoff, and the second class lithology factor of storage, each single lithology is determined
The displacement pressure lower limit of reservoir.Then, it is weighted according to the displacement pressure lower limit of each single lithologic reservoir, to obtain
The displacement pressure lower limit of Heterogeneous reservoir.In this way, can be determined by the displacement pressure lower limit of Heterogeneous reservoir heterogeneous
The Aggregation indica coefficient of property reservoir.It that is to say, by method provided by the present application, can determine being gathered into for Heterogeneous reservoir
Coefficient is hidden, and then come the complexity that judges Aggregation indica.Single lithologic reservoir can only be determined compared to by pressure mercury experiment
For the method for the complexity of Aggregation indica, method application range provided by the present application is wider, more meets actual reservoir feelings
Condition.In addition, Aggregation indica coefficient quantifies the method for the complexity for judging Aggregation indica, compared to passing through displacement pressure
It is more intuitive for method of the lower limit to judge the complexity of Aggregation indica.
Detailed description of the invention
In order to more clearly explain the technical solutions in the embodiments of the present application, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the drawings in the following description are only some examples of the present application, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of determination method flow diagram of Heterogeneous reservoir Aggregation indica coefficient provided by the embodiments of the present application；
Fig. 2 is the determination method flow of another Heterogeneous reservoir Aggregation indica coefficient provided by the embodiments of the present application
Figure；
Fig. 3 is a kind of porosity-percentage composition figure provided by the embodiments of the present application；
Fig. 4 is a kind of determination apparatus structure signal of Heterogeneous reservoir Aggregation indica coefficient provided by the embodiments of the present application
Figure；
Fig. 5 is that the determination apparatus structure of another Heterogeneous reservoir Aggregation indica coefficient provided by the embodiments of the present application shows
It is intended to.
Specific embodiment
To keep the purposes, technical schemes and advantages of the application clearer, below in conjunction with attached drawing to the application embodiment party
Formula is described in further detail.
Fig. 1 is a kind of determination method flow diagram of Heterogeneous reservoir Aggregation indica coefficient provided by the embodiments of the present application.
This method is applied in the determining device of Heterogeneous reservoir Aggregation indica coefficient, the Heterogeneous reservoir Aggregation indica coefficient
Determining device can be a computer equipment.Referring to Fig. 1, this method comprises:
Step 101: determining that the intermediate value depth of Heterogeneous reservoir, intermediate value depth refer to the thickness of the Heterogeneous reservoir
Depth of the middle position apart from earth's surface；
Step 102: according to the intermediate value depth of Heterogeneous reservoir, and storage multiple single lithology first kind lithology
Coefficient, determine each single lithologic reservoir in Heterogeneous reservoir at hiding porosity cutoff；
Step 103: according to single lithologic reservoir each in Heterogeneous reservoir at hiding porosity cutoff, and store
Second class lithology factor determines the displacement pressure lower limit of each single lithologic reservoir in Heterogeneous reservoir；
Step 104: according to the displacement pressure lower limit and heterogeneity of single lithologic reservoir each in Heterogeneous reservoir
Each single lithologic reservoir accounts for the thickness proportion of Heterogeneous reservoir in reservoir, is weighted, to obtain heterogeneity storage
The displacement pressure lower limit of layer；
Step 105: the Aggregation indica coefficient of Heterogeneous reservoir is determined by the displacement pressure lower limit of Heterogeneous reservoir,
Aggregation indica coefficient is used to indicate the complexity of the Aggregation indica of Heterogeneous reservoir.
In the embodiment of the present application, for Heterogeneous reservoir, can first it determine each single in Heterogeneous reservoir
Lithologic reservoir at hiding porosity cutoff.According to each single lithologic reservoir at the second of hiding porosity cutoff, and storage
Class lithology factor determines the displacement pressure lower limit of each single lithologic reservoir.Then, it is replaced according to the row of each single lithologic reservoir
Low pressure limit is weighted, to obtain the displacement pressure lower limit of Heterogeneous reservoir.In this way, can be stored up by heterogeneity
The displacement pressure lower limit of layer determines the Aggregation indica coefficient of Heterogeneous reservoir.It that is to say, it, can by method provided by the present application
To determine the Aggregation indica coefficient of Heterogeneous reservoir, and then come the complexity that judges Aggregation indica.Compared to by pressing mercury
For the method for testing the complexity of Aggregation indica that can only determine single lithologic reservoir, method application model provided by the present application
It encloses more extensively, more meets actual reservoir situation.In addition, Aggregation indica coefficient makes the method for the complexity for judging Aggregation indica
Quantified, it is more intuitive for the method compared to the complexity for judging Aggregation indica by displacement pressure lower limit.
Optionally, according to the intermediate value depth of the Heterogeneous reservoir, and storage multiple single lithology the first kind
Lithology factor, determine each single lithologic reservoir in Heterogeneous reservoir at hiding porosity cutoff, comprising:
For any single lithologic reservoir A in Heterogeneous reservoir, from the first kind rock of multiple single lithology of storage
In property coefficient, the first kind lithology factor of single lithologic reservoir A is obtained；
According to the intermediate value depth of Heterogeneous reservoir and the first kind lithology factor of single lithologic reservoir A, by following
First formula, determine single lithologic reservoir A at hiding porosity cutoff；
First formula: Φn=anln(H)+bn
Wherein, ΦnRefer to single lithologic reservoir A at hiding porosity cutoff, an、bnRefer to the first of single lithologic reservoir A
Class lithology factor, H refer to the intermediate value depth.
Optionally, according to single lithologic reservoir each in the Heterogeneous reservoir at hiding porosity cutoff, Yi Jicun
Second class lithology factor of storage, determines the displacement pressure lower limit of each single lithologic reservoir in Heterogeneous reservoir, comprising:
For any single lithologic reservoir A in Heterogeneous reservoir, according to single lithologic reservoir A under hiding porosity
Limit, and the second class lithology factor of storage determine the displacement pressure lower limit of single lithologic reservoir A according to following second formula；
Second formula:
Wherein, PnRefer to that the displacement pressure lower limit of single lithologic reservoir A, c, d refer to the second class lithology factor.
Optionally, according to the displacement pressure lower limit and heterogeneity of single lithologic reservoir each in Heterogeneous reservoir
Each single lithologic reservoir accounts for the thickness proportion of Heterogeneous reservoir in reservoir, is weighted, to obtain heterogeneity storage
The displacement pressure lower limit of layer, comprising:
According to each in the displacement pressure lower limit and Heterogeneous reservoir of single lithologic reservoir each in Heterogeneous reservoir
A single lithologic reservoir accounts for the thickness proportion of Heterogeneous reservoir, by following third formula, determines the row of Heterogeneous reservoir
For low pressure limit；
Third formula: P=XP1+YP2+ZP3+...+NPn(X+Y+Z+...+N=1)
Wherein, P refers to the displacement pressure lower limit of Heterogeneous reservoir, P1, P2, P3...PnFor each single lithologic reservoir
Displacement pressure lower limit, X, Y, Z...N are the thickness proportion that each single lithologic reservoir accounts for Heterogeneous reservoir.
Optionally, the Aggregation indica coefficient of Heterogeneous reservoir is determined by the displacement pressure lower limit of Heterogeneous reservoir,
Include:
According to the displacement pressure lower limit of Heterogeneous reservoir and the displacement pressure lower limit of sandstone reservoir, according to following
Four formula determine the Aggregation indica coefficient of Heterogeneous reservoir；
4th formula: f=P/PSandstone
Wherein, f is the Aggregation indica coefficient of Heterogeneous reservoir, and P refers to the displacement pressure lower limit of Heterogeneous reservoir,
PSandstoneRefer to the displacement pressure lower limit of sandstone reservoir.
All the above alternatives, can form the alternative embodiment of the application according to any combination, and the application is real
It applies example and this is no longer repeated one by one.
Fig. 2 is the determination method flow of another Heterogeneous reservoir Aggregation indica coefficient provided by the embodiments of the present application
Figure.This method is applied in the determining device of Heterogeneous reservoir Aggregation indica coefficient, the Heterogeneous reservoir Aggregation indica system
Several determining devices can be a computer equipment, referring to fig. 2, this method comprises:
Step 201: determining that the intermediate value depth of Heterogeneous reservoir, intermediate value depth refer in the thickness of Heterogeneous reservoir
Between positional distance earth's surface depth.
Specifically, it is determined that the distance of the thickness of Heterogeneous reservoir and the top of Heterogeneous reservoir apart from earth's surface,
And then the distance by the thickness of Heterogeneous reservoir and the top of Heterogeneous reservoir apart from earth's surface, it determines heterogeneous
The intermediate value depth of property reservoir.Assuming that the intermediate value depth of Heterogeneous reservoir is H, with a thickness of T, the top of Heterogeneous reservoir away from
It is L with a distance from earth's surface, then the intermediate value depth of heterogeneous reservoir can be indicated by following 5th formula:
5th formula:
Step 202: according to the intermediate value depth of Heterogeneous reservoir, and storage multiple single lithology first kind lithology
Coefficient, determine each single lithologic reservoir in Heterogeneous reservoir at hiding porosity cutoff.
In one possible implementation, it according to the intermediate value depth of Heterogeneous reservoir, and stores multiple single
The first kind lithology factor of lithology determines can leading at hiding porosity cutoff for each single lithologic reservoir in Heterogeneous reservoir
Cross following steps (1)-(2) Lai Shixian:
(1), for any single lithologic reservoir A in Heterogeneous reservoir, from the first of multiple single lithology of storage
In class lithology factor, the first kind lithology factor of single lithologic reservoir A is obtained.
The first kind lithology factor of multiple single lithology can be derived by by experimental data in advance, and be stored to non-equal
In the determining device of matter reservoir Aggregation indica coefficient.It, can be in this way, for the single lithologic reservoir A in Heterogeneous reservoir
From the first kind lithology factor of multiple single lithology of storage, the corresponding first kind lithology factor of single lithologic reservoir A is selected.
(2), according to the intermediate value depth of Heterogeneous reservoir and the first kind lithology factor of single lithologic reservoir A, pass through
Following first formula, determine single lithologic reservoir A at hiding porosity cutoff.
First formula: Φn=anln(H)+bn
Wherein, ΦnRefer to single lithologic reservoir A at hiding porosity cutoff, an、bnRefer to the first of single lithologic reservoir A
Class lithology factor, H refer to intermediate value depth.
In the first formula, because of intermediate value depth H, first kind lithology factor an、bnIt is known that therefore by H, an、bnBring into
One formula be can determine single lithologic reservoir A at hiding porosity cutoff Φn。
Illustratively, when single lithologic reservoir A is sandstone, in the Heterogeneous reservoir that depth intervals are 2035-2055m
In, because it is known that the first kind lithology factor of sandstone is aSandstone、bSandstone, and aSandstone=- 8.93、bSandstone=82.835, depth intervals 2035-
The intermediate value depth of 2055m is H=2045, by aSandstone、bSandstoneAnd the value of H brings the first formula into, then: ΦSandstone=-8.93ln
(2045)+82.835 ≈ 14.76 (%)
It should be noted that due to the reservoir that single lithologic reservoir A is any lithology in Heterogeneous reservoir, so,
Not only can through the above steps (1)-(2) determine single lithologic reservoir A at hiding porosity cutoff, above-mentioned step can also be passed through
Suddenly (1)-(2) come determine other single lithologic reservoirs at hiding porosity cutoff, the embodiment of the present application stores up other single lithology
The determination process at hiding porosity cutoff of layer is no longer described in detail.
Under normal conditions, the b in the first kind lithology factor of each single lithologic reservoirnIt may differ by less, therefore,
In alternatively possible implementation, when the intermediate value depth according to Heterogeneous reservoir, and multiple single lithology of storage
First kind lithology factor, determine each single lithologic reservoir in Heterogeneous reservoir at hiding porosity cutoff when, can will be each
B in the first kind lithology factor of a single lithologic reservoirnIt is set as identical numerical value, that is to say, in this case, for non-
It, only need to intermediate value depth according to Heterogeneous reservoir and single rock for any single lithologic reservoir A in homogenieity reservoir
A in the first kind lithology factor of property reservoir An, pass through above-mentioned first formula (in this case, the b in above-mentioned first formulanFor
Constant), determine single lithologic reservoir A at hiding porosity cutoff.
It in the embodiment of the present application, not only can be each single in Heterogeneous reservoir to determine with through the above steps 202
Lithologic reservoir at hiding porosity cutoff, can also determine in other way.For example, can be according to log data come really
Determine each single lithologic reservoir in Heterogeneous reservoir at hiding porosity cutoff.Specifically, in Heterogeneous reservoir
Any single lithologic reservoir A, can be from multiple first volumes and the effective reservoir obtained in single lithologic reservoir A in log data
Total volume and multiple second volumes and invalid reservoir total volume, wherein multiple first volumes refer to single lithologic reservoir
The effective reservoir porosity of A is the volume of the part reservoir of multiple and different first porositys, and multiple second volumes refer to single
The invalid reservoir porosity of lithologic reservoir A is the volume of the part reservoir of multiple and different second porositys.Determine single lithology
Multiple first volumes account for the percentage composition of the total volume of effective reservoir in reservoir A, obtain multiple first percentage compositions.It determines single
Multiple second volumes account for the percentage composition of the total volume of invalid reservoir in lithologic reservoir A, obtain multiple second percentage compositions.According to
Multiple first percentage compositions draw the corresponding hole of effective reservoir in single lithologic reservoir A in porosity-percentage composition figure
It writes music line.According to multiple second percentage compositions, in porosity-percentage composition figure, invalid reservoir in single lithologic reservoir A is drawn
Corresponding porosity curve.The corresponding porosity curve of effective reservoir in porosity-percentage composition figure is corresponding with invalid reservoir
Porosity curve between the corresponding porosity of intersection point be determined as single lithologic reservoir A at hiding porosity cutoff.
Wherein, in single lithologic reservoir there may be effective reservoir and invalid reservoir, and the difference of single lithologic reservoir
Position might have different porositys, therefore, can determine multiple first for the effective reservoir in single lithologic reservoir
Volume determines multiple second volumes for the invalid reservoir in single lithologic reservoir.Wherein, effective reservoir refers to oil reservoir, gas
Reservoirs, the invalid reservoirs such as layer, oil-gas Layer, oil-containing water layer, oil-water common-layer and poor oil reservoir refer to dried layer.
Illustratively, single lithology is stored up in the Heterogeneous reservoir that a depth is 2000-2200m referring to Fig. 3
The effective reservoir of layer A and porosity, the percentage composition of invalid reservoir are projected to respectively in the same porosity-percentage composition figure,
An intersection point is obtained, the corresponding porosity of the intersection point is 15.6%, therefore 15.6% is the single lithologic reservoir A into hiding hole
Spend lower limit.
Step 203: according to single lithologic reservoir each in Heterogeneous reservoir at hiding porosity cutoff, and store
Second class lithology factor determines the displacement pressure lower limit of each single lithologic reservoir in Heterogeneous reservoir.
For any single lithologic reservoir A in Heterogeneous reservoir, according to single lithologic reservoir A under hiding porosity
Limit, and the second class lithology factor of storage determine the displacement pressure lower limit of single lithologic reservoir A according to following second formula.
Second formula:
Wherein, PnRefer to that the displacement pressure lower limit of single lithologic reservoir A, c, d refer to the second class lithology factor.
Because in the second formula, c, d refer to the second class lithology factor, ΦnAccording to step 202 it has been determined that therefore by c, d with
And ΦnIt brings the second formula into i.e. and can determine the displacement pressure lower limit P of single lithologic reservoir An。
Illustratively, when single lithologic reservoir A is sandstone, in the Heterogeneous reservoir that depth intervals are 2035-2055m
In, it is known that c=35.794, d=-0.212, ΦSandstoneIt has been determined that its value Φ in step (2)Sandstone=14.76%, therefore according to
Two formula can obtain:
PSandstone=35.794e-0.212*14.76≈1.566(MPa)
Under normal conditions, in Heterogeneous reservoir, second class lithology factor c, d is used as a constant, however in reality
In the situation of border, the second class lithology factor of each single lithologic reservoir in Heterogeneous reservoir may have slight difference, i.e.,
Each single lithologic reservoir respectively corresponds one group of second class lithology factor, therefore, in order to enable the row of single lithologic reservoir A is for pressure
The precision of power lower limit is higher, in alternatively possible implementation, according to single lithologic reservoir A at hiding porosity cutoff,
And the second class lithology factor of storage, according to above-mentioned second formula, when determining the displacement pressure lower limit of single lithologic reservoir A,
Its corresponding second class lithology factor, then the second class lithology system that fitting is obtained can be fitted for single lithologic reservoir A
Number brings the second formula into, obtains the displacement pressure lower limit of single lithologic reservoir A, the precision of the displacement pressure lower limit obtained in this way is more
It is high.
When the second class lithology factor corresponding to the above-mentioned single lithologic reservoir of fitting, with the single lithology for pressing mercury to test
Displacement pressure lower limit be the longitudinal axis, using single lithology at hiding porosity cutoff as horizontal axis, by the corresponding single rock of different depth
Property displacement pressure lower limit and single lithology at hiding porosity cutoff projected in displacement pressure lower limit figure respectively, by right
Subpoint in displacement pressure lower limit figure carries out curve fitting, and obtains a form and isFunction, the wherein position c, d
On constant be the second class lithology factor corresponding to single lithologic reservoir A.
Above-mentioned displacement pressure lower limit figure is using the displacement pressure lower limit for the single lithology for pressing mercury to test as the longitudinal axis, with list
One lithology is the figure of horizontal axis at hiding porosity cutoff.
It should be noted that due to the reservoir that single lithologic reservoir A is any lithology in Heterogeneous reservoir, so,
The displacement pressure lower limit that not only can determine single lithologic reservoir A with through the above steps 203, can also through the above steps 203
To determine the displacement pressure lower limit of other single lithologic reservoirs, displacement pressure of the embodiment of the present application to other single lithologic reservoirs
The determination process of lower limit is no longer described in detail.
Step 204: according to the displacement pressure lower limit and heterogeneity of single lithologic reservoir each in Heterogeneous reservoir
Each single lithologic reservoir accounts for the thickness proportion of Heterogeneous reservoir in reservoir, is weighted, to obtain heterogeneity storage
The displacement pressure lower limit of layer.
Specifically, for single lithologic reservoir each in Heterogeneous reservoir, determine that the row of this single lithologic reservoir replaces
Low pressure limit and this single lithologic reservoir account for the product of the thickness proportion of Heterogeneous reservoir.In this way, for heterogeneity
In reservoir for multiple single lithologic reservoirs, multiple products will be obtained, this multiple sum of products is determined as heterogeneity storage
The displacement pressure lower limit of layer.
Assuming that including three single lithologic reservoirs in Heterogeneous reservoir, under the displacement pressure of these three single lithologic reservoirs
Limit is respectively P1、P2And P3, the thickness proportion that these three single lithologic reservoirs account for Heterogeneous reservoir is respectively X, Y and Z,
In this way, the displacement pressure lower limit P of Heterogeneous reservoir can be indicated by following third formula:
P=XP1+YP2+ZP3
Wherein, X+Y+Z=1
It should be noted that may include the reservoir of different kinds of rocks in Heterogeneous reservoir, it that is to say, including multiple single
Lithologic reservoir, each single lithologic reservoir has certain thickness, and the sum of thickness of each single lithologic reservoir is equal equal to non-
The overall thickness of matter reservoir, that is to say, the thickness of each single lithologic reservoir account for the overall thickness of Heterogeneous reservoir ratio it
Be 1.
Step 205: the Aggregation indica coefficient of Heterogeneous reservoir is determined by the displacement pressure lower limit of Heterogeneous reservoir,
Aggregation indica coefficient is used to indicate the complexity of the Aggregation indica of Heterogeneous reservoir.
Since sandstone reservoir is usually ideal reservoir, so usually with the displacement pressure lower limit P and sand of Heterogeneous reservoir
The displacement pressure lower limit P of rock reservoirSandstoneRatio, as instruction Heterogeneous reservoir Aggregation indica coefficient, Aggregation indica coefficient
It is used to refer to the complexity of the Aggregation indica of Heterogeneous reservoir, can be indicated by the 4th formula:
F=P/PSandstone
F is the Aggregation indica coefficient of Heterogeneous reservoir, and when f is greater than 1, a possibility that oil and gas accumulation is smaller, works as f
When less than 1, a possibility that oil and gas accumulation, is larger.
It illustratively, include conglomerate, sandstone and flour sand in the Heterogeneous reservoir that depth intervals are 2035-2055m
Three kinds of reservoirs of rock, the thickness proportion that three kinds of reservoirs account for the Heterogeneous reservoir are respectively 0.11,0.75,0.14, it is known that conglomerate, sand
The first kind lithology factor of rock and siltstone is respectively aConglomerate=- 8.77、bConglomerate=86.557, aSandstone=- 8.93、bSandstone=82.835, aSiltstone=- 8.86、
bSiltstone=81.658, the second class lithology factor of the Heterogeneous reservoir is c=35.794, d=-0.212, the Heterogeneous reservoir
Intermediate value depth H=2045, therefore according to the first formula Φn=anln(H)+bnKnown to:
ΦConglomerate(2045)+86.557 ≈ 19.70 (%) of=- 8.77ln
ΦSandstone(2045)+82.835 ≈ 14.76 (%) of=- 8.93ln
ΦSiltstone(2045)+81.658 ≈ 14.11 (%) of=- 8.86ln
According to the second formulaKnown to:
PConglomerate=35.794e-0.212*19.70≈0.550(MPa)
PSandstone=35.794e-0.212*14.76≈1.566(MPa)
PSiltstone=35.794e-0.212*14.11≈1.798(MPa)
According to third formula P=XP1+YP2+ZP3It is found that the displacement pressure lower limit P of the Heterogeneous reservoir:
P=0.11*0.550+0.75*1.566+0.14*1.798 ≈ 1.487
According to the 4th formula f=P/PSandstone, by PSandstoneAnd P is brought into known to the 4th formula:
F=1.487/1.566 ≈ 0.95
Because Aggregation indica coefficient f ≈ 0.95 is less than 1, thus a possibility that can determine whether the Heterogeneous reservoir Aggregation indica compared with
Greatly.
In the embodiment of the present application, firstly, determine Heterogeneous reservoir in each single lithologic reservoir at hiding porosity under
Limit.According to single lithologic reservoir each in Heterogeneous reservoir at hiding porosity cutoff, and the second class lithology system of storage
Number, determines the displacement pressure lower limit of each single lithologic reservoir in Heterogeneous reservoir.Then, according to each in Heterogeneous reservoir
Each single lithologic reservoir accounts for Heterogeneous reservoir in the displacement pressure lower limit and Heterogeneous reservoir of a single lithologic reservoir
Thickness proportion, be weighted, to obtain the displacement pressure lower limit of Heterogeneous reservoir.Finally, being stored up by heterogeneity
The displacement pressure lower limit of layer determines the Aggregation indica coefficient of Heterogeneous reservoir.Compared to can be only applied in single lithologic reservoir
, for method of the pressure mercury experiment to judge the complexity of Aggregation indica, by determining that the row of Heterogeneous reservoir replaces
Low pressure limit is wider come the method application range for judging the complexity of Aggregation indica, more meets actual reservoir situation.In addition,
Aggregation indica coefficient quantifies the method for the complexity for judging Aggregation indica, sentences compared to by displacement pressure lower limit
It is more intuitive for the method for the complexity of disconnected Aggregation indica.
Referring to fig. 4, the embodiment of the present application provides a kind of determining device of Heterogeneous reservoir Aggregation indica coefficient, the dress
It sets including the first determining module 401, the second determining module 402, third determining module 403, ranking operation module 404 and the 4th really
Cover half block 405.
First determining module 401, for determining that the intermediate value depth of Heterogeneous reservoir, intermediate value depth refer to described heterogeneous
Depth of the middle position of the thickness of property reservoir apart from earth's surface；
Second determining module 402, for the intermediate value depth according to Heterogeneous reservoir, and multiple single lithology of storage
First kind lithology factor, determine each single lithologic reservoir in Heterogeneous reservoir at hiding porosity cutoff；
Third determining module 403, for according to single lithologic reservoir each in Heterogeneous reservoir under hiding porosity
Limit, and the second class lithology factor of storage, determine the displacement pressure lower limit of each single lithologic reservoir in Heterogeneous reservoir；
Ranking operation module 404, for the displacement pressure lower limit according to single lithologic reservoir each in Heterogeneous reservoir,
And each single lithologic reservoir accounts for the thickness proportion of the Heterogeneous reservoir in Heterogeneous reservoir, is weighted,
To obtain the displacement pressure lower limit of Heterogeneous reservoir；
4th determining module 405, for determining Heterogeneous reservoir by the displacement pressure lower limit of Heterogeneous reservoir
Aggregation indica coefficient, Aggregation indica coefficient are used to indicate the complexity of the Aggregation indica of Heterogeneous reservoir.
Optionally, the second determining module includes:
Acquisition submodule, for for any single lithologic reservoir A in Heterogeneous reservoir, from the multiple single of storage
In the first kind lithology factor of lithology, the first kind lithology factor of single lithologic reservoir A is obtained；
First determines submodule, for according to the first of the intermediate value depth of Heterogeneous reservoir and single lithologic reservoir A
Class lithology factor, by following first formula, determine single lithologic reservoir A at hiding porosity cutoff；
First formula: Φn=anln(H)+bn
Wherein, ΦnRefer to single lithologic reservoir A at hiding porosity cutoff, an、bnRefer to the first of single lithologic reservoir A
Class lithology factor, H refer to intermediate value depth.
Optionally, third determining module includes:
Second determines submodule, for for any single lithologic reservoir A in Heterogeneous reservoir, according to single lithology
Reservoir A's determines single lithology according to following second formula at hiding porosity cutoff, and the second class lithology factor of storage
The displacement pressure lower limit of reservoir A；
Second formula:
Wherein, PnRefer to that the displacement pressure lower limit of single lithologic reservoir A, c, d refer to the second class lithology factor.
Optionally, ranking operation module, comprising:
Third determines submodule, for the displacement pressure lower limit according to single lithologic reservoir each in Heterogeneous reservoir,
And each single lithologic reservoir accounts for the thickness proportion of Heterogeneous reservoir in Heterogeneous reservoir, by following third formula,
Determine the displacement pressure lower limit of Heterogeneous reservoir；
Third formula: P=XP1+YP2+ZP3+...+NPn(X+Y+Z+...+N=1)
Wherein, P refers to the displacement pressure lower limit of Heterogeneous reservoir, P1, P2, P3...PnFor each single lithologic reservoir
Displacement pressure lower limit, X, Y, Z...N are the thickness proportion that each single lithologic reservoir accounts for the Heterogeneous reservoir.
Optionally, the 4th determining module, comprising:
4th determines submodule, for being replaced according to the displacement pressure lower limit of Heterogeneous reservoir and the row of sandstone reservoir
Low pressure limit determines the Aggregation indica coefficient of Heterogeneous reservoir according to following 4th formula；
4th formula: f=P/PSandstone
Wherein, f is the Aggregation indica coefficient of Heterogeneous reservoir, and P refers to the displacement pressure lower limit of Heterogeneous reservoir,
PSandstoneRefer to the displacement pressure lower limit of sandstone reservoir.
In conclusion in the embodiment of the present application, firstly, determine each single lithologic reservoir in Heterogeneous reservoir at hiding
Porosity cutoff.According to single lithologic reservoir each in Heterogeneous reservoir at the second of hiding porosity cutoff, and storage
Class lithology factor determines the displacement pressure lower limit of each single lithologic reservoir in Heterogeneous reservoir.Then, according to heterogeneity
Each single lithologic reservoir Zhan Feijun in the displacement pressure lower limit and Heterogeneous reservoir of each single lithologic reservoir in reservoir
The thickness proportion of matter reservoir, is weighted, to obtain the displacement pressure lower limit of Heterogeneous reservoir.Finally, by non-
The displacement pressure lower limit of homogenieity reservoir determines the Aggregation indica coefficient of Heterogeneous reservoir.Compared to can be only applied to single rock
Property reservoir in, for method of the pressure mercury experiment to judge the complexity of Aggregation indica, pass through and determine heterogeneity storage
The displacement pressure lower limit of layer is wider come the method application range for judging the complexity of Aggregation indica, more meets actual reservoir feelings
Condition.In addition, Aggregation indica coefficient quantifies the method for the complexity for judging Aggregation indica, compared to passing through displacement pressure
It is more intuitive for method of the lower limit to judge the complexity of Aggregation indica.
It should be understood that the determining device of Heterogeneous reservoir Aggregation indica coefficient provided by the above embodiment is in determination
It, only the example of the division of the above functional modules, can in practical application when Heterogeneous reservoir Aggregation indica coefficient
To be as needed completed by different functional modules above-mentioned function distribution, i.e., the internal structure of device is divided into different
Functional module, to complete all or part of the functions described above.In addition, Heterogeneous reservoir provided by the above embodiment is poly-
The determining device of integrated hiding coefficient and the determination embodiment of the method for Heterogeneous reservoir Aggregation indica coefficient belong to same design,
Specific implementation process is detailed in embodiment of the method, and which is not described herein again.
Fig. 5 is the structure of the determining device of another Heterogeneous reservoir Aggregation indica coefficient provided by the embodiments of the present application
Schematic diagram, the determining device 500 of the Heterogeneous reservoir Aggregation indica coefficient can generate bigger because of configuration or performance difference
Difference, may include one or more processors (central processing units, CPU) 501 and one or
More than one memory 502, wherein be stored at least one instruction in the memory 502, at least one instruction by
The processor 501 is loaded and is executed.Certainly, the determining device 500 of the Heterogeneous reservoir Aggregation indica coefficient can also have
The components such as wired or wireless network interface, keyboard and input/output interface, to carry out input and output, the Heterogeneous reservoir
The determining device 500 of Aggregation indica coefficient can also include other for realizing the component of functions of the equipments, and this will not be repeated here.
In the exemplary embodiment, a kind of computer readable storage medium is additionally provided, the memory for example including instruction,
Above-metioned instruction can be executed by the processor in above-mentioned computer equipment to complete the method for predicting oil production in above-described embodiment.Example
Such as, the computer readable storage medium can be ROM, random access memory (RAM), CD-ROM, tape, floppy disk and light number
According to storage equipment etc..
Those of ordinary skill in the art will appreciate that realizing that all or part of the steps of above-described embodiment can pass through hardware
It completes, relevant hardware can also be instructed to complete by program, the program can store in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only memory, disk or CD etc..
The foregoing is merely the preferred embodiments of the application, not to limit the application, it is all in spirit herein and
Within principle, any modification, equivalent replacement, improvement and so on be should be included within the scope of protection of this application.
Claims (11)
1. a kind of determination method of Heterogeneous reservoir Aggregation indica coefficient, which is characterized in that the described method includes:
Determine that the intermediate value depth of Heterogeneous reservoir, the intermediate value depth refer to the interposition of the thickness of the Heterogeneous reservoir
Set the depth apart from earth's surface；
According to the intermediate value depth of the Heterogeneous reservoir, and storage multiple single lithology first kind lithology factor, really
Each single lithologic reservoir at hiding porosity cutoff in the fixed Heterogeneous reservoir；
According to single lithologic reservoir each in the Heterogeneous reservoir at hiding porosity cutoff, and the second class rock of storage
Property coefficient determines the displacement pressure lower limit of each single lithologic reservoir in the Heterogeneous reservoir；
According to the displacement pressure lower limit and the Heterogeneous reservoir of single lithologic reservoir each in the Heterogeneous reservoir
In each single lithologic reservoir account for the thickness proportion of the Heterogeneous reservoir, be weighted, it is described heterogeneous to obtain
The displacement pressure lower limit of property reservoir；
The Aggregation indica coefficient of the Heterogeneous reservoir is determined by the displacement pressure lower limit of the Heterogeneous reservoir, it is described
Aggregation indica coefficient is used to indicate the complexity of the Aggregation indica of the Heterogeneous reservoir.
2. the method as described in claim 1, which is characterized in that the intermediate value depth according to the Heterogeneous reservoir, with
And the first kind lithology factor of multiple single lithology of storage, determine each single lithologic reservoir in the Heterogeneous reservoir
At hiding porosity cutoff, comprising:
For any single lithologic reservoir A in the Heterogeneous reservoir, from the first kind rock of multiple single lithology of storage
In property coefficient, the first kind lithology factor of the single lithologic reservoir A is obtained；
According to the intermediate value depth of the Heterogeneous reservoir and the first kind lithology factor of the single lithologic reservoir A, pass through
Following first formula, determine the single lithologic reservoir A at hiding porosity cutoff；
First formula: Φn=anln(H)+bn
Wherein, the ΦnRefer to the single lithologic reservoir A at hiding porosity cutoff, an、bnRefer to the single rock
The first kind lithology factor of property reservoir A, the H refer to the intermediate value depth.
3. the method as described in claim 1, which is characterized in that described according to single lithology each in the Heterogeneous reservoir
Reservoir at hiding porosity cutoff, and storage the second class lithology factor, determine each single in the Heterogeneous reservoir
The displacement pressure lower limit of lithologic reservoir, comprising:
For any single lithologic reservoir A in the Heterogeneous reservoir, according to the single lithologic reservoir A at hiding hole
Lower limit is spent, and the second class lithology factor of storage determines that the row of the single lithologic reservoir A replaces according to following second formula
Low pressure limit；
Second formula:
Wherein, the PnRefer to that the displacement pressure lower limit of the single lithologic reservoir A, described c, d refer to the second class lithology system
Number.
4. the method as described in claim 1, which is characterized in that described according to single lithology each in the Heterogeneous reservoir
Each single lithologic reservoir accounts for the Heterogeneous reservoir in the displacement pressure lower limit and the Heterogeneous reservoir of reservoir
Thickness proportion is weighted, to obtain the displacement pressure lower limit of the Heterogeneous reservoir, comprising:
According to the displacement pressure lower limit and the Heterogeneous reservoir of single lithologic reservoir each in the Heterogeneous reservoir
In each single lithologic reservoir account for the thickness proportion of the Heterogeneous reservoir, by following third formula, determine it is described it is non-
The displacement pressure lower limit of matter reservoir；
Third formula: P=XP1+YP2+ZP3+...+NPn(X+Y+Z+...+N=1)
Wherein, the P refers to the displacement pressure lower limit of the Heterogeneous reservoir, the P1, P2, P3...PnFor each list
The displacement pressure lower limit of one lithologic reservoir, the X, Y, Z...N are that each single lithologic reservoir accounts for the heterogeneity storage
The thickness proportion of layer.
5. the method as described in claim 1, which is characterized in that the displacement pressure lower limit by the Heterogeneous reservoir
Determine the Aggregation indica coefficient of the Heterogeneous reservoir, comprising:
According to the displacement pressure lower limit of the Heterogeneous reservoir and the displacement pressure lower limit of sandstone reservoir, according to following
Four formula determine the Aggregation indica coefficient of the Heterogeneous reservoir；
4th formula: f=P/PSandstone
Wherein, the f is the Aggregation indica coefficient of the Heterogeneous reservoir, and the P refers to the row of the Heterogeneous reservoir
For low pressure limit, the PSandstoneRefer to the displacement pressure lower limit of the sandstone reservoir.
6. a kind of determining device of Heterogeneous reservoir Aggregation indica coefficient, which is characterized in that described device includes:
First determining module, for determining that the intermediate value depth of Heterogeneous reservoir, the intermediate value depth refer to the heterogeneity
Depth of the middle position of the thickness of reservoir apart from earth's surface；
Second determining module, for the intermediate value depth according to the Heterogeneous reservoir, and multiple single lithology of storage
First kind lithology factor, determine each single lithologic reservoir in the Heterogeneous reservoir at hiding porosity cutoff；
Third determining module, for according to single lithologic reservoir each in the Heterogeneous reservoir at hiding porosity cutoff,
And the second class lithology factor of storage, it determines in the Heterogeneous reservoir under the displacement pressure of each single lithologic reservoir
Limit；
Ranking operation module, for the displacement pressure lower limit according to single lithologic reservoir each in the Heterogeneous reservoir, with
And each single lithologic reservoir accounts for the thickness proportion of the Heterogeneous reservoir in the Heterogeneous reservoir, is weighted fortune
It calculates, to obtain the displacement pressure lower limit of the Heterogeneous reservoir；
4th determining module, for determining the Heterogeneous reservoir by the displacement pressure lower limit of the Heterogeneous reservoir
Aggregation indica coefficient, the Aggregation indica coefficient are used to indicate the complexity of the Aggregation indica of the Heterogeneous reservoir.
7. device as claimed in claim 6, which is characterized in that second determining module includes:
Acquisition submodule, for for any single lithologic reservoir A in the Heterogeneous reservoir, from the multiple single of storage
In the first kind lithology factor of lithology, the first kind lithology factor of the single lithologic reservoir A is obtained；
First determines submodule, for according to the intermediate value depth of the Heterogeneous reservoir and the single lithologic reservoir A
First kind lithology factor, by following first formula, determine the single lithologic reservoir A at hiding porosity cutoff；
First formula: Φn=anln(H)+bn
Wherein, the ΦnRefer to the single lithologic reservoir A at hiding porosity cutoff, an、bnRefer to the single rock
The first kind lithology factor of property reservoir A, the H refer to the intermediate value depth.
8. device as claimed in claim 6, which is characterized in that the third determining module includes:
Second determines submodule, for for any single lithologic reservoir A in the Heterogeneous reservoir, according to described single
Lithologic reservoir A at hiding porosity cutoff, and the second class lithology factor of storage, according to following second formula, determine described in
The displacement pressure lower limit of single lithologic reservoir A；
Second formula:
Wherein, the PnRefer to that the displacement pressure lower limit of the single lithologic reservoir A, described c, d refer to the second class lithology system
Number.
9. device as claimed in claim 6, which is characterized in that the ranking operation module includes:
Third determines submodule, for the displacement pressure lower limit according to single lithologic reservoir each in the Heterogeneous reservoir,
And each single lithologic reservoir accounts for the thickness proportion of the Heterogeneous reservoir in the Heterogeneous reservoir, passes through following
Three formula determine the displacement pressure lower limit of the Heterogeneous reservoir；
Third formula: P=XP1+YP2+ZP3+...+NPn(X+Y+Z+...+N=1)
Wherein, the P refers to the displacement pressure lower limit of the Heterogeneous reservoir, the P1, P2, P3...PnFor each list
The displacement pressure lower limit of one lithologic reservoir, the X, Y, Z...N are that each single lithologic reservoir accounts for the heterogeneity storage
The thickness proportion of layer.
10. device as claimed in claim 6, which is characterized in that the 4th determining module includes:
4th determines submodule, for being replaced according to the displacement pressure lower limit of the Heterogeneous reservoir and the row of sandstone reservoir
Low pressure limit determines the Aggregation indica coefficient of the Heterogeneous reservoir according to following 4th formula；
4th formula: f=P/PSandstone
Wherein, the f is the Aggregation indica coefficient of the Heterogeneous reservoir, and the P refers to the row of the Heterogeneous reservoir
For low pressure limit, the PSandstoneRefer to the displacement pressure lower limit of the sandstone reservoir.
11. a kind of computer readable storage medium, which is characterized in that computer program is stored in the storage medium, it is described
Claim 1-5 any method is realized when computer program is executed by processor.
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