CN102346806B - High-water-cut oil field layer recombination scheme selection method and high-water-cut oil field layer recombination scheme selection system - Google Patents
High-water-cut oil field layer recombination scheme selection method and high-water-cut oil field layer recombination scheme selection system Download PDFInfo
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Abstract
The invention provides a high-water-cut oil field layer recombination scheme selection method and a high-water-cut oil field layer recombination scheme selection system. The method includes the following steps: according to the difference of permeability, recovery percentage and comprehensive water cut between single sand layers and the distribution of interlayers, determining a plurality of layer recombination schemes; according to the characteristics and exploitation effect of an oil reservoir, working out the effect value of each effect factor in each layer recombination scheme; according to the significance of each effect factor, determining the weight of each effect factor; weighting the effect value of each effect factor and the weight of each effect factor to obtain the effect sample information (including the effect value of each layer recombination scheme) of each layer recombination scheme meeting a predetermined recombination goal; according to the effect sample information, adopting floor effect measurement operation to obtain effect measurement information; and according to the effect measurement information, selecting a scheme meeting the predetermined recombination goal from the layer recombination schemes.
Description
Technical field
The present invention relates to field of petroleum exploitation, particularly, relate to a kind of system of selection and device of high water cut oil field series of strata reorganization scheme.
Background technology
The waterflooding sand-flag oil reservoir of China, can be subdivided into the individual reservoir that tens to more than 100 thin and thicks do not wait in the vertical, nonuniformity due to its nonmarine deposit, caused the physical property of each oil reservoir different, permeability contrast is larger, and the ability that oil, gas, water or other fluid pass through differs and can reach hundreds of to thousands of times.This type of oil reservoir is through for many years exploitation adjustment, and after entering high water-cut stage, interlayer interference and the individual layer phenomenon of advancing by leaps and bounds is serious, and development effectiveness is variation gradually.And through after the exploitation of decades, CNPC has developed that maturing field is whole enters high recovery percent of reserves and high moisture " two high " stage at present.
Therefore, on the subdivision of reservoir basis, high water cut oil field is carried out the series of strata restructuring and optimize, for improving oil reservoir interlayer difference, raising water drive control degree and producing degree of reservoir, have important effect.The conventional method of determining at present the series of strata reorganization scheme mainly contains reservoir engineering method and numerical reservoir simulation method, wherein: reservoir engineering method is mainly analyzed the feasibility of series of strata assembled scheme from employing the aspects such as degree, interlayer, fluid properties and surplus yield, the method is more quick, but the series of strata assembled scheme of determining is single, quality for the multiple combination mode is difficult to distinguish relatively, and decision maker's subjective factor is also stronger; Although numerical reservoir simulation method can consider to affect the many factors of the rear development effectiveness of series of strata combination, can carry out than choosing multiple series of strata array mode comprehensively, it is consuming time longer, has affected to a great extent work efficiency.
In sum, present series of strata reorganization scheme can't be taken into account between efficiency and effect.
Summary of the invention
The fundamental purpose of the embodiment of the present invention is to provide a kind of system of selection and device of high water cut oil field series of strata reorganization scheme, the problem that can't take into account between efficiency and effect to solve series of strata reorganization scheme of the prior art.
To achieve these goals, the embodiment of the present invention provides a kind of system of selection of high water cut oil field series of strata reorganization scheme, the method comprises: the distribution of the permeability between layer of sand single according to each, recovery percent of reserves, comprehensive water cut otherness and interlayer, determine a plurality of series of strata reorganization schemes; According to oil reservoir characteristic and development effectiveness, obtain the effect value of each effect factor at each series of strata reorganization scheme, wherein, the described effect factor comprises: the block permeability grade, the block recovery percent of reserves is differential, the block comprehensive water cut is differential, the series of strata intrinsic permeability is differential, in series of strata in differential, the series of strata of recovery percent of reserves between differential, the series of strata of comprehensive water cut between permeability grade, series of strata between differential, the series of strata of recovery percent of reserves differential, the well segment length of comprehensive water cut, the combination number of plies and series of strata geologic reserve account for total geologic reserve ratio; , according to the importance of described each effect factor, determine the weight of each effect factor; The weight of the effect value of described each effect factor and described each effect factor is weighted operation, to be met the sample results information of each series of strata reorganization scheme of being scheduled to target recombinant, wherein, described sample results information comprises the effect value of each series of strata reorganization scheme; , according to described sample results information, adopt floor effect to estimate operation and obtain measure of merit information; , according to described measure of merit information, select to meet the scheme of described predetermined target recombinant from described a plurality of series of strata reorganization schemes.
Particularly, obtaining each effect factor according to oil reservoir characteristic and development effectiveness comprises in the effect value of each series of strata reorganization scheme: obtain the mean value of each effect factor in each series of strata reorganization scheme; Obtain the standard variance of described each effect factor in each series of strata reorganization scheme according to the mean value of described each effect factor in each series of strata reorganization scheme; Determine the effect value of described each effect factor according to the differential scope of the standard variance of described each effect factor in each series of strata reorganization scheme.
Wherein, the described mean value of each effect factor in each series of strata reorganization scheme that obtains comprises: the mean value that obtains each effect factor in each series of strata in each series of strata reorganization scheme; , according to the mean value of each effect factor in the series of strata quantity in each series of strata reorganization scheme and described each series of strata, obtain the mean value of each effect factor in each series of strata reorganization scheme.
Preferably, obtain described sample results information u by following formula
j:
Wherein, j=1,2 ... m, m represent the quantity of series of strata assembled scheme, and l represents the sum of the effect factor, λ
pFor the weight of each effect factor, C
pFor the effect value of each effect factor, ∑ represents sum operation.
Obtaining measure of merit information by following formula comprises:
Wherein, min{} represents to get the minimum value operation.
The embodiment of the present invention also provides a kind of selecting arrangement of high water cut oil field series of strata reorganization scheme, described device comprises: series of strata reorganization scheme determining unit, be used for the distribution of permeability, recovery percent of reserves, comprehensive water cut otherness and interlayer between layer of sand single according to each, determine a plurality of series of strata reorganization schemes; Effect factorial effect value obtains unit, be used for according to oil reservoir characteristic and development effectiveness, obtain the effect value of each effect factor at each series of strata reorganization scheme, wherein, the described effect factor comprises: the block permeability grade, the block recovery percent of reserves is differential, the block comprehensive water cut is differential, the series of strata intrinsic permeability is differential, in series of strata in differential, the series of strata of recovery percent of reserves between differential, the series of strata of comprehensive water cut between permeability grade, series of strata between differential, the series of strata of recovery percent of reserves differential, the well segment length of comprehensive water cut, the combination number of plies and series of strata geologic reserve account for total geologic reserve ratio; Effect factor weight determining unit, be used for the importance according to described each effect factor, determines the weight of each effect factor; Sample results information acquisition unit, be used for the weight of the effect value of described each effect factor and described each effect factor is weighted operation, to be met the sample results information of each series of strata reorganization scheme of being scheduled to target recombinant, wherein, described sample results information comprises the effect value of each series of strata reorganization scheme; Measure of merit information acquisition unit, be used for according to described sample results information, adopts floor effect to estimate operation and obtain measure of merit information; Series of strata reorganization scheme selected cell, be used for according to described measure of merit information, selects to meet the scheme of described predetermined target recombinant from described a plurality of series of strata reorganization schemes.
Particularly, effect factorial effect value obtains unit and comprises: effect factor mean value acquisition module is used for obtaining the mean value of each effect factor at each series of strata reorganization scheme; Effect factor standard variance acquisition module, be used for obtaining the standard variance of described each effect factor in each series of strata reorganization scheme according to described each effect factor at the mean value of each series of strata reorganization scheme; Effect factorial effect value determining unit, be used for determining the effect value of described each effect factor in the differential scope of the standard variance of each series of strata reorganization scheme according to described each effect factor.
Wherein, effect factor mean value acquisition module comprises: in series of strata, effect factor mean value obtains submodule, is used for obtaining the mean value of each effect factor in each each series of strata of series of strata reorganization scheme; Scheme effect factor mean value obtains submodule, is used for the mean value according to series of strata quantity and each effect factor in described each series of strata of each series of strata reorganization scheme, obtains the mean value of each effect factor in each series of strata reorganization scheme.
Above-mentioned sample results information acquisition unit obtains described sample results information u by following formula
j:
Wherein, j=1,2 ... m, m represent the quantity of series of strata assembled scheme, and l represents the sum of the effect factor, λ
pFor the weight of each effect factor, C
pFor the effect value of each effect factor, ∑ represents sum operation.
Above-mentioned measure of merit information acquisition unit obtains described measure of merit information r by following formula
j:
Wherein, min{} represents to get the minimum value operation.
By means of technique scheme one of at least, by effect value and the weight according to the effect factor, obtain the sample results information of predetermined each series of strata reorganization scheme, and then according to sample results information, obtain measure of merit information, then select to meet the scheme of predetermined target recombinant from predetermined series of strata reorganization scheme according to measure of merit information, than prior art, the embodiment of the present invention can be selected the series of strata reorganization scheme fast and effectively.
Description of drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, in below describing embodiment, the accompanying drawing of required use is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the process flow diagram according to the system of selection of the high water cut oil field series of strata reorganization scheme of the embodiment of the present invention;
Fig. 2 is the basic flow sheet according to the series of strata reorganization scheme gray decision optimum seeking method of the embodiment of the present invention;
Fig. 3 is the process flow diagram according to each effect factorial effect value of acquisition of the embodiment of the present invention;
Fig. 4 is the process flow diagram according to permeability grade effect value between the acquisition series of strata of the embodiment of the present invention;
Fig. 5 is the structured flowchart according to the selecting arrangement of the high water cut oil field series of strata reorganization scheme of the embodiment of the present invention;
Fig. 6 obtains the structured flowchart of unit according to the effect factorial effect value of the embodiment of the present invention;
Fig. 7 is the structured flowchart according to the effect factor mean value acquisition module of the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making under the creative work prerequisite the every other embodiment that obtains, belong to the scope of protection of the invention.
Because series of strata reorganization scheme of the prior art can't be taken into account efficiency and effect, based on this, the embodiment of the present invention provides a kind of selection scheme of high water cut oil field series of strata reorganization scheme, to address the above problem.The present invention is described in detail below in conjunction with accompanying drawing.
Embodiment one
The embodiment of the present invention provides a kind of system of selection of high water cut oil field series of strata reorganization scheme, and as shown in Figure 1, the method comprises:
Step 101, the distribution of the permeability between layer of sand single according to each, recovery percent of reserves, comprehensive water cut otherness and interlayer, determine a plurality of series of strata reorganization schemes;
Step 103,, according to the importance of each effect factor, determine the weight of each effect factor;
Step 104, be weighted operation with the weight of the effect value of each effect factor and each effect factor, and to be met the sample results information of each series of strata reorganization scheme of being scheduled to target recombinant, wherein, sample results information comprises the effect value of each series of strata reorganization scheme;
Step 105,, according to sample results information, adopt floor effect to estimate operation and obtain measure of merit information;
Step 106,, according to measure of merit information, select to meet the scheme of predetermined target recombinant from a plurality of series of strata reorganization schemes.
Can be found out by above description, by effect value and the weight according to the effect factor, obtain the sample results information of predetermined each series of strata reorganization scheme, and then according to sample results information, obtain measure of merit information, then select to meet the scheme of predetermined target recombinant from predetermined series of strata reorganization scheme according to measure of merit information, than prior art, the embodiment of the present invention can be selected the series of strata reorganization scheme fast and effectively.
Fig. 2 is the basic flow sheet according to the series of strata reorganization scheme gray decision optimum seeking method of the embodiment of the present invention, and embodiment for a better understanding of the present invention below describes the embodiment of the present invention in detail based on theoretical model shown in Figure 2.As shown in Figure 2, the flow process of series of strata reorganization scheme comprises:
Step 201-202, definition event set and countermeasure collection
According to grey decision-making theory, decision-making has elemental: event, countermeasure, target and effect.In a certain research range event all be called event set in this research range, correspondingly all possible countermeasure all is called the countermeasure collection.The embodiment of the present invention is defined as event set with the series of strata prioritization scheme of recombinating, and predetermined series of strata reorganization scheme is defined as the countermeasure collection.
Definition event set A is:
A=(a
1), wherein, a
1For the series of strata restructuring is optimized.
Definition countermeasure collection B is:
B＝(b
1，b
2，b
3，b
4，……，b
n)，
Wherein, b
i(i=1,2,3,4,, n) be the definite series of strata reorganization scheme of distribution of permeability (perhaps permeability grade), recovery percent of reserves, comprehensive water cut otherness (perhaps water flooding degree) and interlayer between layer of sand single according to each, wherein, each series of strata reorganization scheme comprises that two overlap or overlap more the situation of series of strata combination, and the user can arbitrarily make up.
Grey decision-making theory is thought, the cartesian product formation situation collection of event set A and countermeasure collection B:
S=(S
11, S
12, S
13..., S
1n), wherein, S
1j=(a
1, b
j), j=1,2,3,4 ..., n.
Step 203, determine decision objective
In embodiments of the present invention, the purpose that restructuring is optimized according to the high water cut oil field series of strata, the decision objective of setting each series of strata reorganization scheme is the technology recovery ratio, that is and, the technology recovery ratio effect value of series of strata reorganization scheme is better, and corresponding series of strata reorganization scheme is just more excellent.
Step 204-205, determine the effect factor and effect value and weight
in embodiments of the present invention, according to the difference of oil reservoir condition and development effectiveness and the difference of each series of strata assembled scheme emphasis, introduced the concept of the effect factor, taken into full account block, between individual reservoir, between series of strata and series of strata, geologic agent and development index in each series of strata, as permeability grade, geologic reserve, recovery percent of reserves and moisture differential etc. impact, also consider that simultaneously the series of strata geologic reserve accounts for the number percent of total geologic reserve, the impact of the indexs such as well segment length and the combination number of plies on the final development effectiveness of series of strata combination, the effect value of each effect factor because of the oil reservoir characteristic and development effectiveness different, depend on the oil reservoir development practical experience.
Setting the effect value is 1,2,3, correspond to respectively, in, poor, the weight of each effect factor can be according to expert's knowledge and experience, based on the importance of each effect factor, provide.The effect of final series of strata assembled scheme can consider effect value and the weight of the effect factor.
Particularly, as shown in Figure 3, obtain each effect factor according to oil reservoir characteristic and development effectiveness and comprise in the effect value of each series of strata reorganization scheme:
Step 1021, obtain the mean value of each effect factor in each series of strata reorganization scheme;
Step 1022, obtain the standard variance of each effect factor in each series of strata reorganization scheme according to the mean value of each effect factor in each series of strata reorganization scheme;
Step 1023, determine the effect value of each effect factor according to the differential scope of the standard variance of each effect factor in each series of strata reorganization scheme.
Wherein, step 1021 specifically comprises: the mean value that obtains each effect factor in each series of strata in each series of strata reorganization scheme; , according to the mean value of the series of strata quantity in each series of strata reorganization scheme and each effect factor in each series of strata, obtain the mean value of each effect factor in each series of strata reorganization scheme.
Based on flow process shown in Figure 3, below take the effect factor as permeability grade between series of strata as example, describe obtaining that between series of strata, permeability grade is in the flow process of the effect value of each series of strata reorganization scheme, as shown in Figure 4, this flow process comprises:
Step 401, obtain the permeability grade mean value in each series of strata in each series of strata reorganization scheme;
Step 402,, according to the series of strata quantity in each series of strata reorganization scheme and the permeability grade mean value in each series of strata, obtain permeability grade between the series of strata in each series of strata reorganization scheme;
Step 403, obtain permeability grade standard variance between series of strata in each series of strata reorganization scheme according to permeability grade between the series of strata in each series of strata reorganization scheme;
Step 404, determine the effect value of permeability grade between series of strata according to the differential scope of permeability grade standard variance between the series of strata in each series of strata reorganization scheme.
Embodiment for a better understanding of the present invention, below describe in further detail definite process of each effect factorial effect value.
(1) the series of strata geologic reserve accounts for the effect value of total geologic reserve ratio
It is a key factor that determines series of strata reorganization scheme quality that each series of strata geologic reserve accounts for total geologic reserve ratio, if between series of strata, reserves are more balanced, the desirable property of scheme is stronger; If between series of strata, the reserves difference is larger, this scheme is in a disadvantageous position.
Step a, calculate each series of strata geologic reserve and account for the number percent η of total geologic reserve
J (series of strata):
Wherein, n represents the interior substratum quantity of each series of strata of each series of strata reorganization scheme, and m represents the series of strata quantity of each series of strata reorganization scheme, and ∑ represents sum operation.
Step b, calculate the mean value of each scheme
j＝1，…，m，
Wherein, n represents the series of strata quantity of each series of strata reorganization scheme, and m represents the quantity of series of strata reorganization scheme.
Step c, calculate the standard variance sd of each scheme η
J (scheme):
Wherein, n represents the series of strata quantity of each series of strata reorganization scheme, and m represents the quantity of series of strata reorganization scheme.
Steps d, the effect value of definition η
According to maximum η standard variance sd in all series of strata reorganization schemes
maxWith minimum η standard variance sd
min, the differential sd of calculating η standard variance
sub:
sd
sub＝sd
max-sd
min
Step e, the rank of definition standard variance
With the rank of the standard variance of η be divided into little, in, large 3 ranks, differentially for little standard variance, be: sd
Min～(sd
Min+ sd
Sub/ 3), differential standard variance in being is: (sd
Min+ sd
Sub/ 3)～(sd
Min+ 2 * sd
Sub/ 3), differentially for large standard variance, be: (sd
Min+ 2 * sd
Sub/ 3)～sd
MaxProvide again the effect value of scheme in conjunction with the class definition of effect value, namely differential little effective, in the effect in differential, differential large weak effect.
(2) block permeability grade, recovery percent of reserves is differential and comprehensive water cut is differential effect value
The block permeability grade, recovery percent of reserves is differential and the differential desirable property that has directly determined scheme of comprehensive water cut.If the block permeability grade, recovery percent of reserves is differential and comprehensive water cut in a certain index differential larger, reflected directly that the series of strata reorganization scheme of determining as the criteria for classifying by the otherness of this index is more excellent; Otherwise, if the block permeability grade, recovery percent of reserves is differential and comprehensive water cut in a certain index differential little, the series of strata reorganization scheme of by this index error opposite sex, dividing is in a disadvantageous position.
Particularly, at first define each substratum permeability grade of block, recovery percent of reserves is differential and other scope of the differential level of comprehensive water cut.Differential as example take comprehensive water cut, set comprehensive moisture differential be differential little 0～33.3% the time, differential 33.3%～66.6% the time be differential in, differential is differential large 66.6%～100% the time.Secondly, be the difference of maximum comprehensive water cut and minimum comprehensive water cut by the moisture differential of calculation block individual layer, judge the differential rank of each substratum comprehensive water cut of block.In addition, also define the rank of layer coefficients amount in each assembled scheme, with series of strata quantity be defined as less, in, many 3 kinds of ranks, differentiate accordingly the rank of each scheme layer coefficients amount.
Finally, block permeability grade, recovery percent of reserves is differential and comprehensive water cut is differential effect value are determined not jointly according to the rank under substratum permeability, recovery percent of reserves and comprehensive water cut differential and the layer coefficients magnitude of series of strata reorganization scheme respectively.
(3) permeability grade between series of strata, recovery percent of reserves is differential and comprehensive water cut is differential effect value
Permeability grade between series of strata, the size that recovery percent of reserves is differential and comprehensive water cut is differential are the important indicators of reflection series of strata assembled scheme superiority-inferiority.Permeability grade between the different series of strata of each series of strata reorganization scheme, recovery percent of reserves is differential and comprehensive water cut is differential larger, and the series of strata reorganization scheme is more excellent; Differential less, the desirable property of series of strata reorganization scheme is less.Permeability grade between series of strata, recovery percent of reserves is differential and the decision method of the differential effect value of comprehensive water cut is slightly different from the differential effect value of block index of correlation.Consider permeability grade between each series of strata, each substratum, the otherness that recovery percent of reserves is differential and comprehensive water cut is differential, adopt standard variance to carry out classification to the recovery percent of reserves of each scheme.Below to determine that the differential effect value of recovery percent of reserves is as example:
Step a, the average recovery percent of reserves of calculating in each series of strata is differential
Wherein, n represents the interior substratum quantity of each series of strata of each series of strata reorganization scheme, and m represents the series of strata quantity of each series of strata reorganization scheme.
Step b, the average recovery percent of reserves of calculating each series of strata reorganization scheme is differential
Wherein, n represents the series of strata quantity of each series of strata reorganization scheme, and m represents the quantity of series of strata reorganization scheme.
Step c, calculate the differential standard variance sd of each series of strata reorganization scheme recovery percent of reserves
j:
Wherein, n represents the series of strata quantity of each series of strata reorganization scheme, and m represents the quantity of series of strata reorganization scheme.
Steps d, the differential effect value of definition recovery percent of reserves
According to maximum recovery percent of reserves standard variance sd in all series of strata reorganization schemes
maxWith minimum recovery percent of reserves standard variance sd
minCalculate the differential sd of recovery percent of reserves standard variance
sub:
sd
Sub＝sd
Max-sd
Min
The rank of definition recovery percent of reserves standard variance be little, in, large 3 ranks, and given effect value, namely differential little standard variance is sd
Min～(sd
Min+ sd
Sub/ 3) standard variance in, differential is (sd
Min+ sd
Sub/ 3)～(sd
Min+ 2 * sd
Sub/ 3), differential large standard variance is (sd
Min+ 2 * sd
Sub/ 3)～sd
MaxProvide the effect value of series of strata reorganization scheme in conjunction with the class definition of effect value, namely differential little effect is for well, and during the effect in differential was, differential large effect was for poor.
(4) the effect value that the series of strata intrinsic permeability is differential, recovery percent of reserves is differential and comprehensive water cut is differential
The series of strata intrinsic permeability is differential, recovery percent of reserves is differential and comprehensive water cut differential be also a key factor that affects series of strata reorganization scheme quality.The series of strata intrinsic permeability is differential, recovery percent of reserves is differential and comprehensive water cut is differential less, illustrates that the series of strata combination is more reasonable; Otherwise, differential larger, illustrate that the rationality of scheme is poor.Below to calculate the differential effect value of series of strata intrinsic permeability as example:
Step a, the mean permeability that calculates in each series of strata is differential
Wherein, n represents the interior substratum quantity of each series of strata of each series of strata reorganization scheme, and m represents the series of strata quantity of each series of strata reorganization scheme;
Step b, calculate the mean permeability standard variance sd of each series of strata of each series of strata reorganization scheme
J (series of strata):
Wherein, n represents the interior substratum quantity of each series of strata of each series of strata reorganization scheme, the series of strata quantity of each series of strata reorganization scheme of m presentation layer;
Step c, calculate the series of strata mean permeability standard variance mean value of each series of strata reorganization scheme
Wherein, n represents the series of strata quantity of each series of strata reorganization scheme, and m represents the quantity of series of strata reorganization scheme.
Steps d, the differential effect value of definition series of strata intrinsic permeability
Obtain in all schemes
Maximal value
And minimum value
, and calculate that it is differential
The rank of definition series of strata intrinsic permeability gradation standard variance, be divided into little, in, large 3 ranks, and respectively given effect value for well, in, poor.That is, differential little standard variance is
Standard variance in differential is
Differential large standard variance is
Differential little effect value is for well, and during the effect value in differential was, differential large effect value was for poor.
(5) well segment length and the effect value that makes up the number of plies
The well segment length of different series of strata is also the key factor that affects the scheme quality with the combination number of plies, and its effect value is equally according to above-mentioned calculating standard variance and define other mode of standard variance level and determine.
The well section net thickness of each series of strata and the combination number of plies approach, the effect value that this effect factor is described is for well, the well section net thickness of each series of strata and the combination number of plies differ during larger description effect value is, the well section net thickness of each series of strata and the combination number of plies differ greatly description effect value value for poor.
Step 206, determine the effect value of series of strata reorganization scheme
At the effect value C that determines each effect factor
pBasis on, its weight λ given according to the importance of the effect factor
p, utilize weighted method to determine situation S
1jEffect value u under each target
1j(wherein, the 1 predetermined target recombinant of expression is 1, j=1, and 2 ... m):
Wherein, m represents the quantity of series of strata assembled scheme, and l represents the sum of the effect factor.
Affect the factor that sequence reorganization scheme quality relates to a lot, in actual application, must consider each factor and weight thereof comprehensively, can determine each factor weight according to data or expertise, as far as possible with reference to most expertises, to improve the degree of accuracy of decision-making.
Step 207-208, form sample results matrix and measure of merit matrix, and the series of strata assembled scheme is carried out the quality sequence, to determine optimal case
At definite each scheme effect value u
1jBasis on,, according to grey decision-making theory, obtain the sample results matrix U under the k target
k:
Wherein, m is the quantity of series of strata reorganization scheme.
Theoretical according to the single goal SITUATION DECISION, be this target of technology recovery ratio for predetermined target recombinant, adopt floor effect to estimate r
ij:
Wherein, min{} represents to get the minimum value operation.
Adopt floor effect to estimate and namely wish sample results value " the smaller the better ", owing to only considering that series of strata make up this event, therefore, and i=1 in formula, above-mentioned formula can be reduced to:
Wherein, j=1,2 ... m.
Process is to the sample results matrix U
kData process, obtain measure of merit matrix R
k:
Step 209, determine optimal case
With single goal SITUATION DECISION criterion, if
For the best situation, and then determine optimum series of strata reorganization scheme
The embodiment of the present invention is take grey decision-making theory as basis, under the prerequisite that takes into full account geology reservoir and exploitation situation, introduce the effect factor concept, and in conjunction with expertise and knowledge, utilize single goal SITUATION DECISION model, can determine fast that long well section water filling sand-flag oil reservoir enters the optimal case of series of strata restructuring after high water-cut stage.
Below take the huge port block as example, utilize the preferred series of strata reorganization scheme of single goal SITUATION DECISION method.This oil reservoir is the waterflooding stratified deposit, contains oil well segment length 450m, and 65 oil-containing substratums are arranged, and the individual layer net thickness is 0.59m～8.75m.Oil reservoir is since formal input exploitation in 1989, and production history reaches 20 years, and recovery percent of reserves is 24.29% at present, workable reserve recovery percent of reserves 79.13%, and comprehensive water cut 89.86%, enter " two high " stage.This oil reservoir interlayer heterogeneity is stronger, and interlayer permeability distribution scope is (3.92～464.44) * 10 more widely
-3μ m
2, permeability grade reaches 118.5, and the interlayer permeability capacity is differential is 352.48; Add oil reservoir in performance history and experienced repeatedly exploitation adjustment, be a cover series of strata long well section exploitation at present, caused the development effectiveness of each layer to differ greatly, the layer that recovery percent of reserves is the highest reaches 47.66%, and minimumly only have 0.24%, recovery percent of reserves is differential reaches 195.53; Interlayer comprehensive water cut difference is also very large, and part layer is water breakthrough not yet, and the part high permeability formation has entered high moisture and ultra-high water cut stage.Table 1 is geologic parameter and the exploitation present situation table of the single layer of sand of part.
Table 1
| The geology level number | Permeability | Net thickness | Permeability capacity | Recovery percent of reserves | Comprehensive water cut | Geologic reserve |
| md | m | md.m | ％ | ％ | 10
4 |
|
| 1 | 4.29 | 3.68 | 15.78 | 3.85 | 0.05 | 1969.22 |
| 2 | 7.25 | 1.50 | 10.90 | 5.11 | 0.05 | 836.43 |
| 3 | 4.97 | 6.28 | 31.20 | 3.97 | 0.09 | 3454.84 |
| 4 | 212.32 | 4.26 | 904.13 | 44.10 | 96.45 | 2562.67 |
| 5 | 5.64 | 2.51 | 14.17 | 4.61 | 0.20 | 1278.28 |
| 6 | 43.95 | 1.68 | 73.76 | 18.24 | 20.57 | 669.27 |
| 7 | 5.75 | 3.16 | 18.16 | 3.71 | 0.06 | 1679.44 |
| 8 | 4.86 | 2.04 | 9.94 | 2.52 | 1.35 | 1122.05 |
| 9 | 205.91 | 3.79 | 779.58 | 41.42 | 92.39 | 2022.10 |
| 10 | 54.42 | 2.06 | 112.03 | 30.78 | 67.82 | 1185.23 |
| 11 | 318.14 | 6.27 | 1994.34 | 44.67 | 96.77 | 3639.62 |
| 12 | 57.13 | 3.82 | 218.38 | 32.86 | 51.68 | 2201.61 |
| 13 | 50.28 | 4.60 | 231.25 | 20.59 | 0.07 | 2427.90 |
| 14 | 45.37 | 1.14 | 51.92 | 20.91 | 0.97 | 635.88 |
| 15 | 5.08 | 7.07 | 35.94 | 6.05 | 0.12 | 3986.90 |
| 16 | 200.37 | 3.30 | 660.83 | 45.08 | 96.87 | 1868.71 |
| 17 | 7.20 | 5.08 | 36.55 | 6.16 | 0.11 | 2803.80 |
| 18 | 44.23 | 2.26 | 99.87 | 30.67 | 53.83 | 1262.38 |
| 19 | 58.31 | 4.60 | 268.22 | 30.47 | 39.74 | 2532.83 |
| 20 | 283.48 | 3.94 | 1117.00 | 46.91 | 98.33 | 2383.65 |
| 21 | 4.43 | 2.87 | 12.69 | 4.02 | 0.23 | 1479.48 |
| 22 | 5.31 | 1.98 | 10.50 | 5.28 | 0.19 | 1080.92 |
| 23 | 153.22 | 4.14 | 633.76 | 42.29 | 93.61 | 2252.00 |
| 24 | 44.43 | 2.27 | 101.07 | 29.66 | 48.75 | 1213.66 |
| 25 | 0.00 | 0.00 | 0.00 | / | / | 0.00 |
| 26 | 294.84 | 3.94 | 1162.44 | 47.66 | 98.75 | 2325.30 |
| 27 | 6.04 | 4.54 | 27.41 | 4.61 | 0.21 | 2373.57 |
| 28 | 230.62 | 1.43 | 330.32 | 44.71 | 96.96 | 842.23 |
| 29 | 54.80 | 2.28 | 125.00 | 28.58 | 41.10 | 1266.60 |
| 30 | 4.97 | 2.61 | 12.99 | 6.02 | 0.01 | 1378.75 |
| 31 | 54.90 | 1.11 | 60.69 | 32.77 | 66.57 | 563.84 |
| 32 | 284.94 | 1.72 | 490.46 | 36.59 | 89.02 | 888.52 |
| 33 | 271.98 | 3.20 | 869.49 | 47.20 | 98.49 | 1811.42 |
| 34 | 299.90 | 2.03 | 609.18 | 47.03 | 98.45 | 1153.83 |
| 35 | 6.31 | 3.16 | 19.92 | 7.68 | 0.25 | 1725.55 |
| 36 | 167.02 | 2.88 | 481.45 | 36.71 | 79.81 | 1557.06 |
| 37 | 6.94 | 0.96 | 6.66 | 6.73 | 1.00 | 518.51 |
| 38 | 230.14 | 1.61 | 371.12 | 43.10 | 94.78 | 873.20 |
| 39 | 3.92 | 3.00 | 11.76 | 5.00 | 0.15 | 1577.30 |
| 40 | 56.49 | 1.78 | 100.29 | 34.27 | 64.94 | 952.16 |
| 41 | 45.39 | 3.04 | 138.19 | 29.32 | 33.29 | 1618.89 |
| 42 | 347.40 | 2.45 | 849.48 | 46.47 | 98.10 | 1431.88 |
| 43 | 6.62 | 4.01 | 26.55 | 5.55 | 0.63 | 2166.15 |
| 44 | 59.95 | 3.48 | 208.65 | 24.76 | 30.63 | 1683.38 |
| 45 | 49.91 | 2.36 | 117.95 | 33.60 | 61.96 | 1263.88 |
| 46 | 5.25 | 4.56 | 23.93 | 5.35 | 0.02 | 2318.52 |
| 47 | 6.73 | 4.62 | 31.08 | 5.42 | 0.03 | 2427.64 |
| 48 | 7.29 | 1.93 | 14.06 | 6.85 | 0.02 | 1040.83 |
| 49 | 46.14 | 3.57 | 164.73 | 24.00 | 2.95 | 1906.31 |
| 50 | 249.80 | 8.75 | 2184.69 | 44.58 | 96.78 | 4512.32 |
| 51 | 46.90 | 3.23 | 151.64 | 34.40 | 66.62 | 1651.89 |
Utilize the gray decision optimum seeking method to determine that the step of optimum series of strata assembled scheme is as follows:
Geologic condition and exploitation present situation according to block,, with the basis that is distributed as of the permeability between each single layer of sand, recovery percent of reserves, comprehensive water cut otherness and interlayer, designed 15 kinds of different series of strata reorganization schemes in advance.Wherein, the assembled scheme of minute 2 cover series of strata exploitations has 12, and the assembled scheme of minute 3 cover series of strata exploitations has 3.Table 2 shows the Back ground Information of different series of strata assembled schemes, and the concrete scheme content is in Table 2.
Table 2
According to single goal SITUATION DECISION method, take into full account block permeability, recovery percent of reserves and comprehensive water cut differential, series of strata intrinsic permeability, recovery percent of reserves and comprehensive water cut are differential, between series of strata, permeability, recovery percent of reserves and comprehensive water cut are differential, and the series of strata reserves account for 12 kinds of effect factors such as total reserves number percent, well segment length and the combination number of plies, and the quality of above-mentioned 15 kinds of series of strata assembled schemes is sorted.
, take expert's knowledge and experience as basis, provided in block, series of strata and the weight of the differential and differential texts factor of development index of physical property between series of strata, in Table 3.And the method for utilizing the invention described above embodiment to provide has been calculated the effect value of each effect factor in each scheme, and wherein the effect value of the part effect factor is in Table 4.
Table 3
| The effect factor names | Weight |
| The block recovery percent of reserves is differential | 0.06 |
| Block is moisture differential | 0.06 |
| The block permeability grade | 0.06 |
| In series of strata, recovery percent of reserves is differential | 0.08 |
| Moisture differential in series of strata | 0.08 |
| The series of strata intrinsic permeability is differential | 0.1 |
| The well segment length | 0.02 |
| The combination number of plies | 0.02 |
| Average recovery percent of reserves between series of strata | 0.3 |
| On average moisture between series of strata | 0.3 |
| Mean permeability between series of strata | 0.5 |
| The series of strata geologic reserve accounts for total geologic reserve ratio | 0.5 |
Table 4
| Event | Target | Countermeasure | The effect factor | The effect value |
| Injection quality | The technology recovery ratio | Scheme 1 | The block recovery percent of reserves is differential | 1 |
| Injection quality | The technology recovery ratio | Scheme 2 | Block is moisture differential | 2 |
| Injection quality | The technology recovery ratio | Scheme 3 | The block permeability grade | 1 |
| Injection quality | The technology recovery ratio | Scheme 4 | In series of strata, recovery percent of reserves is differential | 3 |
| Injection quality | The technology recovery ratio | Scheme 5 | Moisture differential in series of strata | 3 |
| Injection quality | The technology recovery ratio | Scheme 6 | The series of strata intrinsic permeability is differential | 2 |
| Injection quality | The technology recovery ratio | Scheme 7 | The well segment length | 3 |
| Injection quality | The technology recovery ratio | Scheme 8 | The combination number of plies | 3 |
| Injection quality | The technology recovery ratio | Scheme 9 | Average recovery percent of reserves between series of strata | 1 |
| Injection quality | The technology recovery ratio | Scheme 10 | On average moisture between series of strata | 1 |
| Injection quality | The technology recovery ratio | Scheme 11 | Mean permeability between series of strata | 2 |
| Injection quality | The technology recovery ratio | Scheme 12 | The series of strata geologic reserve accounts for total geologic reserve ratio | 2 |
| Injection quality | The technology recovery ratio | Scheme 13 | Moisture differential in series of strata | 3 |
| Injection quality | The technology recovery ratio | Scheme 14 | The series of strata geologic reserve accounts for total geologic reserve ratio | 2 |
| Injection quality | The technology recovery ratio | Scheme 15 | Average recovery percent of reserves between series of strata | 3 |
When predetermined target recombinant is only this target of technology recovery ratio, the sample results matrix U that obtains each series of strata reorganization scheme according to effect value and the weight thereof of each effect factor:
U＝[1.84 1.47 1.66 1.301.75 1.67 1.61 1.79 1.65 1.48 1.38 1.57 1.71 1.41 2.14]
Need to prove, because the emphasis of different schemes sequence combination is different, each effect factor role is different, so the effect value of the effect factor and weight understand some difference, thereby also can cause the difference of the effect value of each scheme.
Use floor effect to estimate the measure of merit matrix R that obtains the series of strata assembled scheme:
R＝[0.70 0.88 0.78 1.00 0.74 0.78 0.80 0.72 0.79 0.88 0.94 0.82 0.76 0.92 0.60]
According to single goal ashing look decision theory, in the measure of merit matrix, scheme corresponding to maximal value is optimal case.Therefore, use the gray decision model, in above-mentioned 15 kinds of series of strata assembled schemes, scheme 4 is optimal case, secondly be scheme 11 and scheme 14, these 3 schemes are the development plan of three cover series of strata restructuring, and the mode that development effectiveness makes up significantly better than two cover series of strata be described under 3 cover series of strata array modes with regard to this target of technology recovery ratio.
From the measure of merit value of two cover series of strata assembled schemes, after the series of strata restructuring, in series of strata, the interlayer physical property is more even, and between series of strata, permeability, recovery percent of reserves and comprehensive water cut difference are larger, and full Development Response of Oilfield is better.Between each series of strata, the shared ratio of geologic reserve also has certain influence to recovery ratio, and between series of strata, the difference of geologic reserve is less, and development effectiveness is relatively better.For the stronger oil reservoir of this type of nonuniformity, if only by the geology interlayer, divide series of strata, owing to not eliminating the impact of interlayer heterogeneity at all, the recovery ratio under its ultimate recovery factor and a cover series of strata exploitation is more or less the same, and effect is undesirable.
Reliability for the series of strata reorganization scheme gray decision optimum seeking method of verifying the embodiment of the present invention, below adopt method for numerical simulation of the prior art to predict the development effectiveness of above-mentioned 15 kinds of series of strata reorganization schemes, and each scheme is carried out the quality sequence, then with the embodiment of the present invention in the result of series of strata reorganization scheme gray decision optimum seeking method contrast, concrete comparing result is in Table 5, and table 5 shows the sequence comparing result of the series of strata assembled scheme of gray decision method and Method for Numerical.
Table 5
As shown in Table 5, the series of strata reorganization scheme sequence that two kinds of methods obtain is basically identical, divide the assembled scheme development effectiveness of three cover series of strata apparently higher than minute assembled scheme of two cover series of strata, and in series of strata, the interlayer physical property is more even, between series of strata, mean permeability, recovery percent of reserves and comprehensive water cut difference are larger, and the series of strata assembled scheme is more excellent.But, from the time that two kinds of methods spend, utilize method for numerical simulation to carry out the prediction of series of strata reorganization scheme, need to first set up geologic model and digital-to-analogue model, then match oil reservoir production history, predict finally the development effectiveness of 15 kinds of series of strata assembled schemes, whole process needs to spend 3-4 month at least; And adopt the gray decision optimum seeking method, on the basis of carrying out single layer of sand development effectiveness evaluation, carrying out the series of strata reorganization scheme preferably only needs about 10-15 days.
Contrast by the result of calculation with method for numerical simulation, the method that the embodiment of the present invention provides is all better aspect reliability and work efficiency, the method that the Fast Evaluation stratified waterflooding sandstone oil reservoir that provides by the embodiment of the present invention enters development late stage series of strata restructuring optimal case, can effectively instruct the later development adjustment of oil reservoir, practicality is stronger.
Embodiment two
The embodiment of the present invention also provides a kind of selecting arrangement of high water cut oil field series of strata reorganization scheme, and this device is preferably used for realizing the method in above-described embodiment one.Fig. 5 is the structured flowchart of this device, and as shown in Figure 5, this device comprises;
Series of strata reorganization scheme determining unit 1, be used for the distribution of permeability, recovery percent of reserves, comprehensive water cut otherness and interlayer between layer of sand single according to each, determines a plurality of series of strata reorganization schemes;
Effect factorial effect value obtains unit 2, be used for according to oil reservoir characteristic and development effectiveness, obtain the effect value of each effect factor at each series of strata reorganization scheme, wherein, the effect factor comprises: the block recovery percent of reserves is differential, the block comprehensive water cut is differential, in differential, the series of strata of recovery percent of reserves, comprehensive water cut is differential in block permeability grade, series of strata, the series of strata intrinsic permeability is differential, between well segment length, the combination number of plies, series of strata between differential, the series of strata of recovery percent of reserves between differential, the series of strata of comprehensive water cut permeability grade and series of strata geologic reserve account for total geologic reserve ratio;
Effect factor weight determining unit 3, be used for the importance according to each effect factor, determines the weight of each effect factor;
Sample results information acquisition unit 4, be used for the weight of the effect value of each effect factor and each effect factor is weighted operation, to be met the sample results information of each series of strata reorganization scheme of being scheduled to target recombinant, wherein, sample results information comprises the effect value of each series of strata reorganization scheme;
Measure of merit information acquisition unit 5, be used for according to sample results information, adopts floor effect to estimate operation and obtain measure of merit information;
Series of strata reorganization scheme selected cell 6, be used for according to measure of merit information, selects to meet the scheme of predetermined target recombinant from a plurality of series of strata reorganization schemes.
Can be found out by above description, the sample results information that obtains predetermined each series of strata reorganization scheme according to effect value and the weight of the effect factor by sample results information acquisition unit, and then measure of merit information acquisition unit obtains measure of merit information according to sample results information, then series of strata reorganization scheme selected cell selects to meet the scheme of predetermined target recombinant from predetermined series of strata reorganization scheme according to measure of merit information, than prior art, the embodiment of the present invention can be selected the series of strata reorganization scheme fast and effectively.
Particularly, as shown in Figure 6, effect factorial effect value obtains unit 2 and comprises:
Effect factor mean value acquisition module 21, be used for obtaining the mean value of each effect factor at each series of strata reorganization scheme;
Effect factor standard variance acquisition module 22, be used for obtaining the standard variance of described each effect factor in each series of strata reorganization scheme according to described each effect factor at the mean value of each series of strata reorganization scheme;
Effect factorial effect value determining unit 23, be used for determining the effect value of described each effect factor in the differential scope of the standard variance of each series of strata reorganization scheme according to described each effect factor.
Wherein, as shown in Figure 7, effect factor mean value acquisition module 21 comprises:
In series of strata, effect factor mean value obtains submodule 211, is used for obtaining the mean value of each effect factor in each each series of strata of series of strata reorganization scheme;
Scheme effect factor mean value obtains submodule 212, is used for the mean value according to series of strata quantity and each effect factor in each series of strata of each series of strata reorganization scheme, obtains the mean value of each effect factor in each series of strata reorganization scheme.
Above-mentioned fruit sample information obtains unit and obtains described sample results information u by following formula
j:
Wherein, j=1,2 ... m, m represent the quantity of series of strata assembled scheme, and l represents the sum of the effect factor, λ
pFor the weight of each effect factor, C
pEffect value for each effect factor.
Above-mentioned measure of merit information acquisition unit obtains described measure of merit information r by following formula
j:
Particularly, the implementation of above-mentioned each module can, with reference to the associated description in above-described embodiment one, repeat no more herein.
In embodiments of the present invention, consider reservoir characteristics and the development effectiveness of individual reservoir, introduced the effect factor, utilized the single goal SITUATION DECISION theoretical, structure synthesis effect measure matrix, thus can determine rapidly the optimum series of strata reorganization scheme of oil reservoir.
in sum, the embodiment of the present invention provides that a kind of to be applicable to vertical heterogeneity serious, the water drive sand-flag oil reservoir of long well section exploitation enters after high water-cut stage the scheme of carrying out series of strata reorganization scheme rapid Optimum, can estimate effectively rapidly the stratified waterflooding development of sandstone reservoir by the gray decision optimum seeking method and enter series of strata restructuring optimal case after high water-cut stage, this helps to solve this type of high water-cut reservoir interlayer contradiction aggravation, the injected water phenomenon of advancing by leaps and bounds is obvious, the phenomenons such as rate of water cut increase is too fast, improve the oil field overall yield thereby reach, improve the purpose of development effectiveness.Because the embodiment of the present invention has been considered in block, series of strata, the permeability grade between series of strata, recovery percent of reserves is differential, comprehensive water cut is differential and well segment length, the combination number of plies and series of strata between the many factors such as geologic reserve ratio on the impact of effect of reservoir development, superior and inferior evaluating to scheme is more reasonable, and, by the quicksort to multiple series of strata reorganization scheme, can increase work efficiency preferably.
One of ordinary skill in the art will appreciate that all or part of step that realizes in above-described embodiment method can come the relevant hardware of instruction complete by program, this program can be stored in a computer read/write memory medium, such as ROM/RAM, magnetic disc, CD etc.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only specific embodiments of the invention; the protection domain that is not intended to limit the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (2)
1. the system of selection of a high water cut oil field series of strata reorganization scheme, is characterized in that, described method comprises:
The distribution of the permeability between layer of sand single according to each, recovery percent of reserves, comprehensive water cut otherness and interlayer, determine a plurality of series of strata reorganization schemes;
According to oil reservoir characteristic and development effectiveness, obtain the effect value of each effect factor at each series of strata reorganization scheme, wherein, the described effect factor comprises: the block permeability grade, the block recovery percent of reserves is differential, the block comprehensive water cut is differential, the series of strata intrinsic permeability is differential, in series of strata in differential, the series of strata of recovery percent of reserves between differential, the series of strata of comprehensive water cut between permeability grade, series of strata between differential, the series of strata of recovery percent of reserves differential, the well segment length of comprehensive water cut, the combination number of plies and series of strata geologic reserve account for total geologic reserve ratio;
, according to the importance of described each effect factor, determine the weight of each effect factor;
The weight of the effect value of described each effect factor and described each effect factor is weighted operation, to be met the sample results information of each series of strata reorganization scheme of being scheduled to target recombinant, wherein, described sample results information comprises the effect value of each series of strata reorganization scheme;
, according to described sample results information, adopt floor effect to estimate operation and obtain measure of merit information;
, according to described measure of merit information, select to meet the scheme of described predetermined target recombinant from described a plurality of series of strata reorganization schemes;
Wherein,
Obtaining each effect factor according to oil reservoir characteristic and development effectiveness comprises in the effect value of each series of strata reorganization scheme: obtain the mean value of each effect factor in each series of strata reorganization scheme; Obtain the standard variance of described each effect factor in each series of strata reorganization scheme according to the mean value of described each effect factor in each series of strata reorganization scheme; Determine the effect value of described each effect factor according to the differential scope of the standard variance of described each effect factor in each series of strata reorganization scheme;
The described mean value of each effect factor in each series of strata reorganization scheme that obtains comprises: the mean value that obtains each effect factor in each series of strata in each series of strata reorganization scheme; , according to the mean value of each effect factor in the series of strata quantity in each series of strata reorganization scheme and described each series of strata, obtain the mean value of each effect factor in each series of strata reorganization scheme;
Obtain described sample results information u by following formula
j:
Wherein, j=1,2 ... m, m represent the quantity of series of strata assembled scheme, and l represents the sum of the effect factor, λ
pFor the weight of each effect factor, C
pFor the effect value of each effect factor, Σ represents sum operation;
Obtain measure of merit information r by following formula
j:
Wherein, min{} represents to get the minimum value operation;
Select to meet the scheme of described predetermined target recombinant from described a plurality of series of strata reorganization schemes by following formula:
With single goal SITUATION DECISION criterion, if
With r
j0Be defined as the optimal effectiveness measure value, and with r
j0Corresponding series of strata reorganization scheme is defined as optimum series of strata reorganization scheme, wherein, and 1≤j
0≤ m, max{} represent to get maxima operation.
2. the selecting arrangement of a high water cut oil field series of strata reorganization scheme, is characterized in that, described device comprises:
Series of strata reorganization scheme determining unit, be used for the distribution of permeability, recovery percent of reserves, comprehensive water cut otherness and interlayer between layer of sand single according to each, determines a plurality of series of strata reorganization schemes;
Effect factorial effect value obtains unit, be used for according to oil reservoir characteristic and development effectiveness, obtain the effect value of each effect factor at each series of strata reorganization scheme, wherein, the described effect factor comprises: the block permeability grade, the block recovery percent of reserves is differential, the block comprehensive water cut is differential, the series of strata intrinsic permeability is differential, in series of strata in differential, the series of strata of recovery percent of reserves between differential, the series of strata of comprehensive water cut between permeability grade, series of strata between differential, the series of strata of recovery percent of reserves differential, the well segment length of comprehensive water cut, the combination number of plies and series of strata geologic reserve account for total geologic reserve ratio;
Effect factor weight determining unit, be used for the importance according to described each effect factor, determines the weight of each effect factor;
Sample results information acquisition unit, be used for the weight of the effect value of described each effect factor and described each effect factor is weighted operation, to be met the sample results information of each series of strata reorganization scheme of being scheduled to target recombinant, wherein, described sample results information comprises the effect value of each series of strata reorganization scheme;
Measure of merit information acquisition unit, be used for according to described sample results information, adopts floor effect to estimate operation and obtain measure of merit information;
Series of strata reorganization scheme selected cell, be used for according to described measure of merit information, selects to meet the scheme of described predetermined target recombinant from described a plurality of series of strata reorganization schemes;
Wherein,
Described effect factorial effect value obtains unit and comprises: effect factor mean value acquisition module is used for obtaining the mean value of each effect factor at each series of strata reorganization scheme; Effect factor standard variance acquisition module, be used for obtaining the standard variance of described each effect factor in each series of strata reorganization scheme according to described each effect factor at the mean value of each series of strata reorganization scheme; Effect factorial effect value determining unit, be used for determining the effect value of described each effect factor in the differential scope of the standard variance of each series of strata reorganization scheme according to described each effect factor;
Described effect factor mean value acquisition module comprises: in series of strata, effect factor mean value obtains submodule, is used for obtaining the mean value of each effect factor in each each series of strata of series of strata reorganization scheme; Scheme effect factor mean value obtains submodule, is used for the mean value according to series of strata quantity and each effect factor in described each series of strata of each series of strata reorganization scheme, obtains the mean value of each effect factor in each series of strata reorganization scheme;
Described sample results information acquisition unit obtains described sample results information u by following formula
j:
Wherein, j=1,2 ... m, m represent the quantity of series of strata assembled scheme, and l represents the sum of the effect factor, λ
pFor the weight of each effect factor, C
pFor the effect value of each effect factor, Σ represents sum operation;
Described measure of merit information acquisition unit obtains described measure of merit information r by following formula
j:
Wherein, min{} represents to get the minimum value operation;
Described series of strata reorganization scheme selected cell selects to meet the scheme of described predetermined target recombinant from described a plurality of series of strata reorganization schemes by following formula:
With single goal SITUATION DECISION criterion, if
With r
j0Be defined as the optimal effectiveness measure value, and with r
j0Corresponding series of strata reorganization scheme is defined as optimum series of strata reorganization scheme, wherein, and 1≤j
0≤ m, max{} represent to get maxima operation.
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