CN109389307A - Method and device for determining channeling flow of oil reservoir water injection well - Google Patents
Method and device for determining channeling flow of oil reservoir water injection well Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 452
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Abstract
The application discloses a method and a device for determining channeling flow of an oil reservoir water injection well, wherein the method comprises the following steps: acquiring the water injection amount of each water injection well in each well group to the oil well, the liquid production amount of the oil well in each well group and the total water injection amount of each water injection well in a preset time period; calculating the contribution value of each water injection well in each well group to the oil well according to the water injection amount and the liquid production amount; calculating the total water distribution required by the oil wells in each well group according to the liquid production amount; calculating the water distribution amount of each water injection well in each well group to the oil well according to the contribution value and the total water distribution amount required; and calculating the flow rate of each water injection well according to the distributed water amount and the total water injection amount. The method solves the technical problem that quantitative research on the flow channeling condition of the water injection well is lacked in the prior art.
Description
Technical field
This application involves reservoir engineering dynamic analysing methods, in particular to a kind of determining oil reservoir injection well channelling amount
Method and device.
Background technique
Mid-late oilfield development is adopted the factors such as configuration relation, plane heterogeneity and is influenced by well pattern form, note, each well group
Between note to adopt degree of correspondence difference very big, well group note in part is adopted extremely unbalanced, and it is existing plane serious interference, water logging, water breakthrough etc. occur
As making to inject that water is inefficient, inefficient cycle, reducing water filling utilization efficiency.
Determine that the channelling situation that water is injected in reservoir is to formulate the important evidence of well profile modification countermeasure.Oil reservoir is altered by foreign countries
The research starting of stream situation is more early, and the water drive developed primarily directed to the high permeability formation and the crack that are formed due to diagenesis is primary
Fluid-channeling channel;Domestic research and development is relatively rapidly and mature, including Production development analysis, well testing, well-log information identification, tracer
Agent monitoring, and the mathematical theory system based on step analysis, fuzzy comprehensive evaluation method.These technologies are mainly for continental sandstone
The secondary hypertonic channel that reservoir water drive is formed development condition can be described plane between fluid-channeling channel, longitudinal direction, well, but
The prior art lacks the Quantitative research method of the channelling situation such as channelling amount for water injection well, is not able to satisfy the oil reservoir later period and finely adjusts
The technical requirements cutd open.
Summary of the invention
The main purpose of the application is to provide a kind of method of determining oil reservoir injection well channelling amount, to solve the prior art
It is middle to lack aiming at the problem that channelling situation of water injection well carries out quantitative study.
To achieve the goals above, according to the one aspect of the application, a kind of determining oil reservoir injection well channelling amount is provided
Method, this method comprises:
Every mouthful of water injection well in each well group is obtained in preset period of time to the production liquid of oil well in the water injection rate of oil well, each well group
Total water injection rate of amount and each water injection well;
Every mouthful of water injection well is calculated in each well group to the contribution margin of oil well according to the water injection rate and the Liquid output;
The demand assignment total Water of oil well in each well group is calculated according to the Liquid output;
Every mouthful of water injection well is calculated in each well group to oil well according to the contribution margin and the demand assignment total Water
Distribute water;
The channelling amount of each water injection well is calculated according to the distribution water and total water injection rate.
To achieve the goals above, according to the another aspect of the application, a kind of determining oil reservoir injection well channelling amount is provided
Device, which includes:
Data acquisition module, for obtain in preset period of time every mouthful of water injection well in each well group to the water injection rate of oil well,
Total water injection rate of the Liquid output of oil well and each water injection well in each well group;
Contribution margin computing module, for calculating every mouthful of water filling in each well group according to the water injection rate and the Liquid output
Contribution margin of the well to oil well;
Demand assignment total Water computing module, for calculating the demand assignment of oil well in each well group according to the Liquid output
Total Water;
Water computing module is distributed, for calculating each well group according to the contribution margin and the demand assignment total Water
In every mouthful of water injection well to the distribution water of oil well;
Flow rate calculation module is altered, for calculating altering for each water injection well according to the distribution water and total water injection rate
Flow.
To achieve the goals above, according to the another aspect of the application, a kind of computer equipment, including storage are additionally provided
Device, processor and storage on a memory and the computer program that can run on a processor, the processor execution meter
The step in the method for above-mentioned determining oil reservoir injection well channelling amount is realized when calculation machine program.
To achieve the goals above, according to the another aspect of the application, a kind of computer readable storage medium is additionally provided,
The computer-readable recording medium storage has computer program, real when the computer program executes in the computer processor
Step in the method for existing above-mentioned determining oil reservoir injection well channelling amount.
The side for having the beneficial effect that the application and being combined using static geologic information and well pattern Production development data of the application
Method can accurately determine the water injection well of water breakthrough, and quantification calculates the channelling amount of water injection well, can be oil reservoir later period essence
Fine tuning, which is cutd open, provides data foundation and technological guidance.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the application
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.In the accompanying drawings:
Fig. 1 is the flow chart that the embodiment of the present application determines oil reservoir injection well channelling amount method;
Fig. 2 is block A well pattern schematic diagram in the embodiment of the present application oil reservoir;
Fig. 3 is the flow diagram that the embodiment of the present application calculates water injection well contribution margin;
Fig. 4 is that the embodiment of the present application calculates in each well group water injection well to the flow diagram of the contribution margin of oil well;
Fig. 5 is the flow diagram that the embodiment of the present application calculates each water injection well channelling amount;
Fig. 6 is the flow diagram that the embodiment of the present application calculates oil well demand assignment total Water;
Fig. 7 is the structural block diagram for the device that the embodiment of the present application determines oil reservoir injection well channelling amount;
Fig. 8 is the structural block diagram of the embodiment of the present application contribution margin computing module;
Fig. 9 is the structural block diagram of the embodiment of the present application calculation of relationship degree unit;
Figure 10 is the structural block diagram that the embodiment of the present application alters flow rate calculation module;
Figure 11 is the structural block diagram of the embodiment of the present application distribution water computing module;
Figure 12 is that block B oil-water well note adopts corresponding status analysis table in the embodiment of the present application oil reservoir;
Figure 13 is block B water injection well channelling amount and channelling rank statistical form in the embodiment of the present application oil reservoir;
Figure 14 is block B water injection well channelling situation statistical form in the embodiment of the present application oil reservoir.
Specific embodiment
In order to make those skilled in the art more fully understand application scheme, below in conjunction in the embodiment of the present application
Attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is only
The embodiment of the application a part, instead of all the embodiments.Based on the embodiment in the application, ordinary skill people
Member's every other embodiment obtained without making creative work, all should belong to the model of the application protection
It encloses.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the present invention, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
It should be noted that term " includes " and " tool in the description and claims of this application and above-mentioned attached drawing
Have " and their any deformation, it is intended that cover it is non-exclusive include, for example, containing a series of steps or units
Process, method, system, product or equipment those of are not necessarily limited to be clearly listed step or unit, but may include without clear
Other step or units listing to Chu or intrinsic for these process, methods, product or equipment.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
It should be noted that the term " well group " in the description and claims of this application and above-mentioned attached drawing is also known as
" injection-production well group ", wherein including water injection well of the oil well at least one to the flushing in each " well group ".In addition, one
It can simultaneously include multiple well groups in the well pattern of a hiding note, each water injection well can also belong to simultaneously according to its corresponding oil well
Two or more well groups.
As shown in Figure 1, stand oil hiding water injection well alters method of flow to the embodiment of the present application really includes step S101 to step
S105。
Step S101 obtains in preset period of time every mouthful of water injection well in each well group in the water injection rate of oil well, each well group
Total water injection rate of the Liquid output of oil well and each water injection well.Due in the art usually using moon water injection rate and monthly output liquid
Amount etc. describes the manufacturing parameter of water injection well and oil well, therefore in the present embodiment, water injection rate in above-mentioned preset period of time,
Liquid output and total water injection rate, can be respectively as follows: every mouthful of water injection well in each well group to oil well the moon water injection rate, oil well in each well group
The moon Liquid output and each water injection well the moon total water injection rate.
It in the present embodiment, include multiple well groups in well pattern, each well group includes an oil well and at least one water filling
Well, the application need first to obtain every mouthful of water injection well in each well group and infuse to the moon of oil well before the channelling amount for calculating water injection well
In water, each well group oil well the moon Liquid output and the well pattern in all well groups each water injection wells for being included always infuse the moon
Water.
Fig. 2 is the well pattern schematic diagram of block A in the embodiment of the present application oil reservoir, as shown in Fig. 2, sharing 3 mouthfuls of oil in the well pattern
Well is respectively A, B and C, and it is respectively 1,2,3,4,5 and 6 that 6 mouthfuls of water injection wells are shared in the well pattern, and 3 well groups are shared in the well pattern, point
Not are as follows: from oil well A and the first well group formed to the water injection well 1,2 and 3 that oil well A is filled the water;It is filled the water from oil well B and to oil well B
Water injection well 2,3,5 and 6 form the second well group;The third well that oil well C and the water injection well 3,4 and 5 filled the water to oil well C form
Group.
This step is illustrated below with reference to Fig. 2, calculate oil reservoir in block A well pattern in water injection well channelling amount it
Before, need first to obtain: every mouthful of water injection well needs to obtain respectively to the moon water injection rate of oil well, such as the first well group in each well group
Moon water injection rate of the water injection well 1,2 and 3 to oil well A in first well group;The moon Liquid output of oil well, i.e. oil well A, B and C in each well group
Moon Liquid output;And the moon total water injection rate for each water injection well that all well groups are included in the well pattern, i.e., water filling is obtained respectively
The moon total water injection rate of well 1,2,3,4,5 and 6.
Step S102 calculates in each well group every mouthful of water injection well to oil well according to the water injection rate and the Liquid output
Contribution margin.In this step, every mouthful of water injection well in each well group is calculated to the contribution margin of oil well, in the present embodiment, the contribution
Value can be contribution ratio.The calculation method of the contribution ratio in the present embodiment are as follows: first infused according to the moon of every mouthful of water injection well in well group
The moon Liquid output of water and oil well, generate respectively every mouthful of water injection well the moon water injection rate sequence and oil well moon Liquid output sequence
Column, and then according to moon water injection rate sequence and moon Liquid output sequence, by grey relational grade algorithm, calculate every mouthful of note in the well group
Well to the degree of association of oil well, and the contribution of oil well than the degree of association and all oil wells in the well group for the oil well the degree of association it
The ratio of sum.
This step is illustrated below with reference to Fig. 2, is calculated in well pattern shown in Fig. 2 in this step in each well group
Every mouthful of water injection well calculates separately out water injection well 1,2 and 3 in the first well group to the contribution margin of oil well, the first well group as escribed above
To the contribution margin of oil well A.
Step S103 calculates the demand assignment total Water of oil well in each well group according to the Liquid output.In this step,
According to the Liquid output of oil well in each well group, the total Water for needing to distribute to each oil well, i.e., the demand point of each oil well are calculated separately out
With total Water, which can indicate the water that oil well produces a certain amount of oil liquid and needs to distribute, usually may be used
With by the moon Liquid output and hydrodynamic face variation tendency of analysis oil well, and obtained according to the basic principle of material balance.At this
In embodiment, the moon demand assignment total Water Q of oil wellw' be the oil well moon Liquid output QlWith the product of distribution coefficient ε, formula
Are as follows:
Qw'=ε × Ql (1)
Distribution coefficient ε is that those skilled in the art adopts corresponding situation referring to each fascicule note of oil-water well and combines work
The value interval of one constant of experience and determination, general distribution coefficient ε is 0.8 to 1.2.
Step S104 calculates every mouthful of water injection well in each well group according to the contribution margin and the demand assignment total Water
To the distribution water of oil well.In this step, according to calculated contribution margin in step s 102 and by step S103
Calculated oil well demand assignment total Water calculates in each well group every mouthful of water injection well to the distribution water of oil well.In this implementation
In example, every mouthful of water injection well is demand point of the every mouthful of water injection well to the contribution ratio and oil well of oil well to the distribution water of oil well in well group
Product with total Water.In the present embodiment, if a water injection well belongs to two or more well groups simultaneously, can distinguish
The water injection well is calculated to the distribution water of the oil well in each well group.
This step is illustrated below with reference to Fig. 2, is calculated in well pattern shown in Fig. 2 in this step in each well group
Every mouthful of water injection well calculates separately the distribution water of oil well by taking above-mentioned first well group as an example according in above-mentioned steps S102
The contribution margin of 1,2 and 3 couple of oil well A of water injection well out, and the total water of demand assignment of oil well A being calculated in step s 103
Amount, can calculate separately out the distribution water of 1,2 and 3 couple of oil well A of water injection well, similarly, can be calculated in the second well group and infuse
The distribution water of 3,4 and 5 couples of oil well C of water injection well in the distribution water and third well group of 2,3,5 and 6 couples of oil well B of well.Such as
Shown in Fig. 2, since water injection well 2 belongs to the first well group and the second well group simultaneously, i.e., filled the water simultaneously to oil well A and oil well B, then at this
Water injection well 2 can be calculated separately out in step to the distribution water of oil well A and oil well B.
Step S105 calculates the channelling amount of each water injection well according to the distribution water and total water injection rate.At this
In application, the channelling amount of water injection well is total water injection rate of the water injection well and the difference of total score water distribution quantity.In the present embodiment, it is calculating
When the channelling amount of certain water injection well, need first to obtain the total score water distribution quantity of the water injection well, when the oil well belongs to two or more simultaneously
When a well group, i.e., the oil well simultaneously to two or more flushings when, need according to being calculated in above-mentioned steps S104
For the oil well out respectively to the distribution water of each oil well, summation obtains the total score water distribution quantity of the oil well, and then by the water injection well
Total water injection rate and total score water distribution quantity ask poor, obtain the channelling amount of the water injection well.In this step, if a water injection well only belongs to
As soon as then the total score water distribution quantity of the water injection well is distribution water of the water injection well to the oil well of the well group when well group.
This step is illustrated below with reference to Fig. 2, in this step, when calculating the channelling amount of water injection well, needs elder generation
The total score water distribution quantity of the water injection well, water injection well 3 as shown in Figure 2 are obtained, which fills the water to oil well A, B and C simultaneously, leads to
The water injection well 3 being calculated in above-mentioned steps S104 is crossed respectively to the distribution water of oil well A, B and C, and adduction obtains water injection well 3
Total score water distribution quantity, and then total water injection rate of water injection well 3 and total score water distribution quantity are asked poor, obtain the channelling amount of the water injection well 3.Such as
Water injection well 1 shown in Fig. 2 is only filled the water since the water injection well 1 is pertaining only to the first well group for oil well A, then the total score of water injection well 1
Water distribution quantity is just distribution water of the water injection well 1 to oil well A.
It can be seen from the above description that the application is mutually tied using static geologic information with well pattern Production development data
The method of conjunction can accurately determine the water injection well of water breakthrough, and quantification calculates the channelling amount of water injection well, can be oil reservoir
Later period, fine profile control provided data foundation and technological guidance.
As shown in figure 3, above-mentioned steps S102, calculates in each well group every mouthful according to the water injection rate and the Liquid output
Water injection well specifically includes step S201 to step S202 to the contribution margin of oil well.
Step S201 calculates in each well group every mouthful of water injection well to oil well according to the water injection rate and the Liquid output
The degree of association can calculate in well group every mouthful of water injection well to oil well by grey relational grade algorithm in embodiments herein
Grey relational grade.
Step S202 goes out every mouthful of water injection well in each well group to the contribution margin of oil well, in this step according to the calculation of relationship degree
In rapid, every mouthful of water injection well is calculated to the contribution margin of oil well to the grey relational grade of oil well according to every mouthful of water injection well in well group.?
In the present embodiment, which is contribution ratio, and the contribution of oil well in the grey relational grade and the well group for the water injection well than owning
The ratio of the sum of the grey relational grade of water injection well.
Fig. 4 is that being calculated in each well group according to the water injection rate and the Liquid output for the embodiment of the present application fills the water for every mouthful
Well is to the method flow diagram of the contribution margin of oil well, as shown in figure 4, the method comprising the steps of S301 to step S304.
Step S301 generates the cyclic waterflooding amount sequence of every mouthful of water injection well in each well group according to the water injection rate.In this step
In rapid, every mouthful of water injection well generates each well group to the moon water injection rate of oil well in each well group according to obtained in above-mentioned steps S101
In every mouthful of water injection well cyclic waterflooding amount sequence, the independent variable sequence as subsequent calculating.In the present embodiment, every in certain well group
The cyclic waterflooding amount sequence of mouth water injection well can be Xi'=(xi' (1), xi' (2) ..., xi’(n))T, wherein i=1,2 ..., m, m
For the quantity of water injection well in the well group, Xi' indicating the cyclic waterflooding amount sequence of i-th mouthful of water injection well in the well group, n is cyclic waterflooding
Measure the number of the data in sequence.
Step S302 generates the period Liquid output sequence of oil well in each well group according to the Liquid output.In this step, root
According to the moon Liquid output of oil well in each well group obtained in above-mentioned steps S101, the period Liquid output sequence of oil well in each well group is generated
Column, the dependent variable sequence as subsequent calculating.In the present embodiment, the period Liquid output sequence of oil well can be in certain well group
X0'=(x0’(1),x0' (2) ..., x0’(n))T, wherein n is the number of the data in cyclic waterflooding amount sequence.
Step S303, according to the cyclic waterflooding amount sequence and period Liquid output sequence, by grey relational grade algorithm,
Every mouthful of water injection well is calculated in each well group to the degree of association of oil well.In this application, it is calculated by the algorithm of grey relational grade
The degree of association of the water injection well to oil well in each well group.It in the present embodiment, first will be upper according to grey relational grade analysis principle
It states cyclic waterflooding amount sequence obtained in step S301 and the cyclic waterflooding amount sequence obtained in above-mentioned steps S302 is used as and divides
The basic sequence of analysis is indicated with n × (m+1) matrix form are as follows:
In formula (2): X0'=(x0’(1),x0' (2) ..., x0’(n))TIt indicates in certain well group by oil well moon Liquid output structure
At dependent variable sequence;Xi'=(xi' (1), xi' (2) ..., xi’(n))TIt indicates to be made of in certain well group water injection well moon water injection rate
Independent variable sequence, wherein i=1,2 ..., m, m are the quantity of water injection well in the well group, Xi' indicate i-th mouthful of water filling in the well group
The cyclic waterflooding amount sequence of well, n are the number of the data in sequence.
Since original variable sequence has different dimension or the order of magnitude, in order to guarantee to analyze the reliability of result, into one
Step carries out nondimensionalization to Variables Sequence and handles to obtain following matrix:
In formula (3): X0=(x0(1),x0(2) ..., x0(n))TIndicate nondimensionalization dependent variable sequence;
Xi=(xi(1), xi(2) ..., xi(n))T, i=1,2 ..., m indicate nondimensionalization independent variable sequence.
Above-mentioned nondimensionalization uses method for normalizing:
In formula (4): i=0,1,2 ... m, k=1,2 ... n.
The absolute difference of first row (dependent variable sequence) and remaining each column (independent variable sequence) corresponding element in formula (3)
Value, forms following absolute difference matrix:
Wherein:
Δi(k)=| x0(k)-xi(k)| (6)
In formula (6): i=1,2 ... m, k=1,2 ... n.
Δ (max), Δ (max) are respectively defined as maximum number and minimum number in absolute difference matrix:
Data in absolute difference battle array are made to obtain incidence coefficient such as down conversion according to formula (7) and (8):
Incidence coefficient matrix is obtained by formula (9):
In formula (9): ρ is resolution ratio, the difference between incidence coefficient is indicated, according to data distribution in formula (10)
The value mostly between 0.1~0.5, the corresponding ρ value of one group of parameter, generally takes 0.1, poor with the degree of association between improvement factor
It is different;ξi(k) it is incidence coefficient, is no more than 1 positive number, Δi(k) smaller, ξi(k) bigger, it reflects independent variable sequence XiWith because
Variables Sequence X0Correlation degree.
N incidence coefficient of the i-th column in formula (10) is averaging to obtain grey relational grade:
And then the grey correlation degree series of the well group water injection well are acquired according to formula (11):
γ={ γ1,γ2,…,γm} (12)
In formula (12), γ is grey relational grade, and m is the quantity of water injection well in the well group, γmFor m in the well group
Grey relational grade of a water injection well to oil well in well group.
Step S304 goes out in each well group every mouthful of water injection well to the contribution margin of oil well according to the calculation of relationship degree.In this step
In rapid, the grey correlation degree series of each well group water injection well according to obtained in above-mentioned steps S303 calculate each well group
In every mouthful of water injection well to the contribution margin of oil well.Contribution value sequence of the every mouthful of water injection well to oil well in well group are as follows:
G={ g1,g2,…,gm} (13)
Wherein, contribution value sequence (13) is to be calculated according to above-mentioned grey correlation degree series (12), specific formula for calculation
Are as follows:
It is the distribution coefficient mentioned in above-mentioned formula (1) in the ε in above-mentioned formula (14) and (15), value interval is
0.8 to 1.2.
In formula (14), giIt is i-th of water injection well in well group to the contribution margin of oil well.
It is obtained after every mouthful of water injection well is to the contribution margin of oil well in each well group by formula (13) to (15), above-mentioned steps
S104 calculates distribution of the every mouthful of water injection well to oil well in each well group according to the contribution margin and the demand assignment total Water
Water, so that it may be indicated with following formula:
Qwi=gi·Ql (16)
Wherein, giFor contribution margin of i-th mouthful of water injection well to oil well, Q in well grouplFor the total water of demand assignment of the well group oil well
Amount, QwiDistribution water of i-th mouthful of water injection well to oil well as in well group.
According to formula (16) it can be concluded that distribution water of i-th mouthful of water injection well to corresponding all oil wells in above-mentioned well group
The data sequence Q of amountwi,j, wherein j is jth mouth oil well corresponding with above-mentioned i-th mouthful of water injection well.
It is obtained after every mouthful of water injection well is to the distribution water of oil well in each well group by formula (16), and then above-mentioned steps
S105 calculates the channelling amount of each water injection well according to the distribution water and total water injection rate, so that it may with following formula
To indicate:
In formula (17): QrwiFor i-th mouthful of well saliva well channelling amount;QawiFor i-th mouthful of total water injection rate of water injection well;K be and the note
The corresponding oil well quantity of well.The channelling amount of every mouthful of water injection well in each well group can be calculated with this.
As shown in figure 5, above-mentioned steps S105, calculates each water injection well according to the distribution water and total water injection rate
Channelling amount, specifically include step S401 and step S402.
Step S401 calculates the total score water distribution quantity of each water injection well according to the distribution water.In the present embodiment, it is counting
When calculating the channelling amount of certain water injection well, need first to obtain the total score water distribution quantity of the water injection well, when the oil well simultaneously belong to two and with
When last well group, i.e., the water injection well simultaneously to two or more flushings when, need according to falling into a trap in above-mentioned steps S104
For the water injection well obtained respectively to the distribution water of each oil well, summation obtains the total score water distribution quantity of the water injection well.If one
As soon as a water injection well is pertaining only to well group, then the total score water distribution quantity of the water injection well is point of the water injection well to the oil well of the well group
Water distribution quantity.After obtaining the total score water distribution quantity of water injection well, and then through step S402, total water injection rate and described total is calculated
The difference for distributing water, obtains the channelling amount of each water injection well.
As shown in fig. 6, above-mentioned steps S103, the total water of demand assignment for calculating oil well in each well group according to the Liquid output
Amount, specifically includes step S501 and step S502.
Step S501 obtains the distribution coefficient of oil well in preset each well group.In this step, due to the demand of oil well point
With total Water Qw' be the oil well Liquid output QlWith the product of distribution coefficient ε, therefore in calculating each well group oil well demand point
When with total Water, need first to obtain the distribution coefficient ε of oil well in each well group of setting.Distribution coefficient ε is the work of this field
Personnel adopt corresponding situation and one constant of determination in conjunction with working experience referring to each fascicule note of oil-water well, the general distribution system
The value interval of number ε is 0.8 to 1.2.And then in step S502, it is by calculating the Liquid output of oil well and distribution in each well group
Several products obtains the demand assignment total Water of oil well in each well group.
In the alternative embodiment of the application, the degree of association of water injection well in each well group is calculated in above-mentioned steps S403
Sequence γ={ γ1,γ2,…,γmAfter, also according to preset corresponding relationship, it is determined that pass of the water injection well to oil well in well group
Connection property rank, wherein relevance rank is by being divided into A:0.75≤γ < 1.00, B:0.50≤γ < 0.75, C to weak by force:
0.25≤γ < 0.50, D:0.00 < γ < 0.25.
In the alternative embodiment of the application, the formula (17) in S404 through the above steps calculates water injection well and alters
Flow QrwiLater, the corresponding relationship also according to channelling amount and channelling rank determines the channelling rank of each water injection well, wherein basis
Creation data statistical law, by water injection well channelling degree by being divided into four ranks, A:5≤Q to weak by forcerwi, B:3≤Qrwi< 5,
C:1≤Qrwi< 3, D:0≤Qrwi< 1, (wherein QrwiUnit is 104m3)。
In the alternative embodiment of the application, total note of channelling amount and water injection well also according to calculated water injection well
Water, to calculate the channelling ratio of the water injection well, wherein channelling ratio is the ratio of channelling amount and total water injection rate.
Figure 12 is that block B oil-water well note adopts corresponding status analysis table, as shown in figure 12, oil reservoir in the embodiment of the present application oil reservoir
Oil well P1142 in block B corresponds to four mouthfuls of water injection wells simultaneously, wherein the relevance rank highest of water injection well P1150 and the oil well;
And oil well P1170 only corresponds to water injection well P1171, and water injection well P1171 reaches A grades to the relevance rank of the oil well.
Figure 13 is block B water injection well channelling amount and channelling rank statistical form in the embodiment of the present application oil reservoir, as shown in figure 13,
The channelling amount and channelling rank of water injection well P1145 and P1132 are relatively high in oil reservoir block B, while its channelling ratio also phase
To higher, need targetedly to take Profile Control in Injection Well measure.
Figure 14 is block B water injection well channelling situation statistical form in the embodiment of the present application oil reservoir, it can be observed from fig. 13 that oily
The channelling situation of Tibetan area block A is than more serious, and channelling well has 8 mouthfuls in 13 mouthfuls of water injection wells, and wherein A, B, C, D grades of channelling wells are respectively 2
Mouth, 6 mouthfuls, 0 mouthful, 0 mouthful account for 15.4%, 46.2%, 0%, the 0% of total well number at present respectively, need targetedly to take note
Well profile modification measure.
It should be noted that step shown in the flowchart of the accompanying drawings can be in such as a group of computer-executable instructions
It is executed in computer system, although also, logical order is shown in flow charts, and it in some cases, can be with not
The sequence being same as herein executes shown or described step.
Based on the same inventive concept, the embodiment of the present application also provides a kind of device of determining oil reservoir injection well channelling amount,
It can be used to implement method described in above-described embodiment, as described in the following examples.Due to determining the channelling of oil reservoir injection well
The principle that the device of amount solves the problems, such as is similar to the method for oil reservoir injection well channelling amount is determined, it is thus determined that oil reservoir injection well channelling
The implementation of the device of amount may refer to determine the embodiment of the method for oil reservoir injection well channelling amount, and overlaps will not be repeated.With
Used in lower, the combination of the software and/or hardware of predetermined function is may be implemented in term " unit " or " module ".Although following
Device described in embodiment is preferably realized with software, but the combined realization of hardware or software and hardware is also
It may and be contemplated.
As shown in fig. 7, the device includes: data acquisition module 1, contribution margin computing module 2, the calculating of demand assignment total Water
Module 3 distributes water computing module 4 and alters flow rate calculation module 5.
Data acquisition module 1, for obtain in preset period of time every mouthful of water injection well in each well group to the water injection rate of oil well,
Total water injection rate of the Liquid output of oil well and each water injection well in each well group.Due in the art usually using the moon water injection rate with
And moon Liquid output etc. describes the manufacturing parameter of water injection well and oil well, therefore in embodiments herein, above-mentioned preset time
Water injection rate, Liquid output and total water injection rate in period, be respectively as follows: every mouthful of water injection well in each well group to oil well the moon water injection rate,
In each well group oil well the moon Liquid output and each water injection well the moon total water injection rate.The application calculate water injection well channelling amount it
Before, need to first pass through data acquisition module 1 obtain every mouthful of water injection well in each well group to oil well the moon water injection rate, in each well group
Oil well the moon Liquid output and the well pattern in all well groups each water injection well for being included the moon total water injection rate.
Contribution margin computing module 2, for calculating every mouthful of note in each well group according to the water injection rate and the Liquid output
Contribution margin of the well to oil well.In the alternative embodiment of the application, the calculation method of contribution margin are as follows: first according to every mouthful in well group
Water injection well the moon water injection rate and oil well moon Liquid output, generate the moon water injection rate sequence and oil well of every mouthful of water injection well respectively
Month Liquid output sequence, and then according to moon water injection rate sequence and moon Liquid output sequence, by grey relational grade algorithm, calculate the well
Every mouthful of water injection well is to the degree of association of oil well in group, and the contribution margin of oil well is all oil wells in the degree of association and the well group of the oil well
The sum of the degree of association ratio.
Demand assignment total Water computing module 3, for calculating the demand point of oil well in each well group according to the Liquid output
With total Water.In the embodiment of the present application, the moon demand assignment total Water of oil well is the moon Liquid output and distribution coefficient of the oil well
Product, wherein distribution coefficient is that those skilled in the art referring to oil-water well each fascicule note adopts corresponding situation and in conjunction with work
The value interval of one constant of experience and determination, general distribution coefficient ε is 0.8 to 1.2.
Water computing module 4 is distributed, for calculating each well according to the contribution margin and the demand assignment total Water
Distribution water of the every mouthful of water injection well to oil well in group.In the embodiment of the present application, distribution of the every mouthful of water injection well to oil well in well group
Water is product of the every mouthful of water injection well to the contribution ratio and the demand assignment total Water of oil well of oil well.In the embodiment of the present application,
If a water injection well belongs to two or more well groups simultaneously, the water injection well can be calculated separately out in each well group
The distribution water of oil well.
Flow rate calculation module 5 is altered, for calculating each water injection well according to the distribution water and total water injection rate
Channelling amount.In this application, the channelling amount of water injection well is total water injection rate of the water injection well and the difference of total score water distribution quantity.In the application
In embodiment, calculate certain water injection well channelling amount when, need first to obtain the total score water distribution quantity of the water injection well, when the oil well simultaneously
When belonging to two or more well groups, i.e., the oil well simultaneously to two or more flushings when, need according to the oil well point
The other distribution water to each oil well, summation obtain the total score water distribution quantity of the oil well, so by total water injection rate of the water injection well with
Total score water distribution quantity asks poor, obtains the channelling amount of the water injection well.In the embodiment of the present application, if a water injection well is pertaining only to one
When well group, then the total score water distribution quantity of the water injection well is just distribution water of the water injection well to the oil well of the well group.
As shown in figure 8, it includes: calculation of relationship degree unit 6 and algorithm unit 7 that above-mentioned contribution margin computing module, which includes 2,.
Calculation of relationship degree unit 6, for calculating every mouthful of note in each well group according to the water injection rate and the Liquid output
The degree of association of the well to oil well.In embodiments herein, calculation of relationship degree unit 6 is calculated by grey relational grade algorithm
Grey relational grade of the every mouthful of water injection well to oil well in well group out.
Algorithm unit 7, for going out in each well group every mouthful of water injection well to the contribution margin of oil well according to the calculation of relationship degree.?
In the embodiment of the present application, algorithm unit 7 calculates every mouthful of water filling to the grey relational grade of oil well according to every mouthful of water injection well in well group
Contribution margin of the well to oil well.In the embodiment of the present application, which is contribution ratio, and the contribution of oil well is than the ash for the water injection well
The ratio of the sum of grey relational grade of all water injection wells in the color degree of association and the well group.
As shown in figure 9, above-mentioned calculation of relationship degree unit 6 includes: cyclic waterflooding amount sequence generating unit 601, period production liquid
Measure sequence generating unit 602 and grey relational grade computing unit 603.
Cyclic waterflooding amount sequence generating unit 601, for generating in each well group every mouthful of water injection well according to the water injection rate
Cyclic waterflooding amount sequence.
Period Liquid output sequence generating unit 602, the period for generating oil well in each well group according to the Liquid output produce
Liquid measure sequence;
Grey relational grade computing unit 603, for leading to according to the cyclic waterflooding amount sequence and period Liquid output sequence
Grey relational grade algorithm is crossed, calculates in each well group every mouthful of water injection well to the degree of association of oil well.In embodiments herein, ash
Color calculation of relationship degree unit 603 can be using the calculation formula in above-mentioned steps S303, to calculate every mouthful of water filling in each well group
The degree of association of the well to oil well.
As shown in Figure 10, above-mentioned flow rate calculation module 5 of altering includes: total allocation water computing unit 501 and computing unit
502。
Total allocation water computing unit 501, for calculating the total score water distribution quantity of each water injection well according to the distribution water.
In the embodiment of the present application, when calculating the channelling amount of certain water injection well, need first to obtain the total score water distribution quantity of the water injection well, when this
When water injection well belongs to two or more well groups simultaneously, i.e., the water injection well simultaneously to two or more flushings when, total score
Water distribution quantity computing unit 501 obtains the water injection well respectively to the distribution water of each oil well, and summation obtains the total allocation of the oil well
Water.If then the total score water distribution quantity of the water injection well is the water injection well to the well when as soon as a water injection well is pertaining only to well group
The distribution water of the oil well of group.
Computing unit 502 obtains each water injection well for the difference by calculating total water injection rate and the total score water distribution quantity
Channelling amount.
As shown in figure 11, above-mentioned distribution water computing module 4 includes: distribution coefficient acquiring unit 401 and computing unit
402。
Distribution coefficient acquiring unit 401, for obtaining the distribution coefficient of oil well in preset each well group.In this application,
Since the demand assignment total Water of oil well is the Liquid output of the oil well and the product of distribution coefficient, the oil in calculating each well group
When the demand assignment total Water of well, need first to obtain the distribution coefficient of oil well in each well group of setting.The distribution coefficient is ability
The staff in domain adopts corresponding situation and one constant of determination in conjunction with working experience referring to each fascicule note of oil-water well, generally
The value interval of the distribution coefficient is 0.8 to 1.2.
Computing unit 402 obtains oily in each well group for the product by calculating the Liquid output and the distribution coefficient
The demand assignment total Water of well.
The another aspect of the application, additionally provides a kind of computer equipment, including memory, processor and is stored in storage
On device and the computer program that can run on a processor, the processor realize above-mentioned determination when executing the computer program
Step in the method for oil reservoir injection well channelling amount.
The another aspect of the application additionally provides a kind of computer readable storage medium, the computer-readable storage medium
Matter is stored with computer program, and the computer program realizes above-mentioned determining oil reservoir injection well when executing in the computer processor
Step in the method for channelling amount.
Obviously, those skilled in the art should be understood that each module of above-mentioned the application or each step can be with general
Computing device realize that they can be concentrated on a single computing device, or be distributed in multiple computing devices and formed
Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored
Be performed by computing device in the storage device, perhaps they are fabricated to each integrated circuit modules or by they
In multiple modules or step be fabricated to single integrated circuit module to realize.In this way, the application be not limited to it is any specific
Hardware and software combines.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (16)
1. a kind of method of determining oil reservoir injection well channelling amount characterized by comprising
Obtain in preset period of time every mouthful of water injection well in each well group to the Liquid output of oil well in the water injection rate of oil well, each well group,
And total water injection rate of each water injection well;
Every mouthful of water injection well is calculated in each well group to the contribution margin of oil well according to the water injection rate and the Liquid output;
The demand assignment total Water of oil well in each well group is calculated according to the Liquid output;
Distribution of the every mouthful of water injection well to oil well in each well group is calculated according to the contribution margin and the demand assignment total Water
Water;
The channelling amount of each water injection well is calculated according to the distribution water and total water injection rate.
2. the method for determining oil reservoir injection well channelling amount according to claim 1, which is characterized in that described according to the note
Water and the Liquid output calculate in each well group every mouthful of water injection well to the contribution margin of oil well, comprising:
Every mouthful of water injection well is calculated in each well group to the degree of association of oil well according to the water injection rate and the Liquid output;
Go out in each well group every mouthful of water injection well to the contribution margin of oil well according to the calculation of relationship degree.
3. the method for determining oil reservoir injection well channelling amount according to claim 2, which is characterized in that described according to the note
Water and the Liquid output calculate in each well group every mouthful of water injection well to the degree of association of oil well, comprising:
The cyclic waterflooding amount sequence of every mouthful of water injection well in each well group is generated according to the water injection rate;
The period Liquid output sequence of oil well in each well group is generated according to the Liquid output;
Each well group is calculated by grey relational grade algorithm according to the cyclic waterflooding amount sequence and period Liquid output sequence
In every mouthful of water injection well to the degree of association of oil well.
4. the method for determining oil reservoir injection well channelling amount according to claim 1, which is characterized in that described to divide according to
Water distribution quantity and total water injection rate calculate the channelling amount of each water injection well, comprising:
The total score water distribution quantity of each water injection well is calculated according to the distribution water;
By calculating the difference of total water injection rate and the total score water distribution quantity, the channelling amount of each water injection well is obtained.
5. the method for determining oil reservoir injection well channelling amount according to claim 1, which is characterized in that described according to the production
Liquid measure calculates the demand assignment total Water of oil well in each well group, comprising:
Obtain the distribution coefficient of oil well in preset each well group;
By calculating the product of the Liquid output and the distribution coefficient, the demand assignment total Water of oil well in each well group is obtained.
6. the method for determining oil reservoir injection well channelling amount according to claim 1, which is characterized in that further include:
The channelling ratio of each water injection well is calculated according to the channelling amount and total water injection rate.
7. the method for determining oil reservoir injection well channelling amount according to claim 1, which is characterized in that further include:
The channelling rank of each water injection well is determined according to the corresponding relationship of channelling amount and channelling rank.
8. a kind of device of determining oil reservoir injection well channelling amount characterized by comprising
Data acquisition module, for obtaining in preset period of time water injection rate, each well of the every mouthful of water injection well to oil well in each well group
Total water injection rate of the Liquid output of oil well and each water injection well in group;
Contribution margin computing module, for calculating every mouthful of water injection well pair in each well group according to the water injection rate and the Liquid output
The contribution margin of oil well;
Demand assignment total Water computing module, the total water of demand assignment for calculating oil well in each well group according to the Liquid output
Amount;
Water computing module is distributed, it is every in each well group for being calculated according to the contribution margin and the demand assignment total Water
Distribution water of the mouth water injection well to oil well;
Flow rate calculation module is altered, for calculating the channelling of each water injection well according to the distribution water and total water injection rate
Amount.
9. the device of determining oil reservoir injection well channelling amount according to claim 8, which is characterized in that the contribution margin calculates
Module includes:
Calculation of relationship degree unit, for calculating every mouthful of water injection well pair in each well group according to the water injection rate and the Liquid output
The degree of association of oil well;
Algorithm unit, for going out in each well group every mouthful of water injection well to the contribution margin of oil well according to the calculation of relationship degree.
10. the device of determining oil reservoir injection well channelling amount according to claim 9, which is characterized in that the degree of association meter
Calculating unit includes:
Cyclic waterflooding amount sequence generating unit, for generating the cyclic waterflooding of every mouthful of water injection well in each well group according to the water injection rate
Measure sequence;
Period Liquid output sequence generating unit, for generating the period Liquid output sequence of oil well in each well group according to the Liquid output
Column;
Grey relational grade computing unit, for passing through grey according to the cyclic waterflooding amount sequence and period Liquid output sequence
Algorithm of correlation degree calculates in each well group every mouthful of water injection well to the degree of association of oil well.
11. the device of determining oil reservoir injection well channelling amount according to claim 8, which is characterized in that the channelling meter
Calculating module includes:
Total allocation water computing unit, for calculating the total score water distribution quantity of each water injection well according to the distribution water;
Computing unit obtains the channelling of each water injection well for the difference by calculating total water injection rate and the total score water distribution quantity
Amount.
12. the device of determining oil reservoir injection well channelling amount according to claim 8, which is characterized in that the distribution water
Computing module includes:
Distribution coefficient acquiring unit, for obtaining the distribution coefficient of oil well in preset each well group;
Computing unit obtains the need of oil well in each well group for the product by calculating the Liquid output and the distribution coefficient
Seek distribution total Water.
13. the device of determining oil reservoir injection well channelling amount according to claim 8, which is characterized in that further include:
Channelling ratio computing module, for calculating the channelling ratio of each water injection well according to the channelling amount and total water injection rate
Example.
14. the device of determining oil reservoir injection well channelling amount according to claim 8, which is characterized in that further include:
Channelling rank determination module, for determining the channelling grade of each water injection well according to the corresponding relationship of channelling amount and channelling rank
Not.
15. a kind of computer equipment including memory, processor and stores the meter that can be run on a memory and on a processor
Calculation machine program, which is characterized in that the processor realizes any one of claim 1 to 7 method when executing the computer program
In step.
16. a kind of computer readable storage medium, the computer-readable recording medium storage has computer program, and feature exists
In realization such as the step in claim 1 to 7 any one method when the computer program executes in the computer processor
Suddenly.
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