CN103413022B - Crude oil recovery rate calibration auxiliary device and auxiliary method thereof - Google Patents
Crude oil recovery rate calibration auxiliary device and auxiliary method thereof Download PDFInfo
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- CN103413022B CN103413022B CN201310270981.7A CN201310270981A CN103413022B CN 103413022 B CN103413022 B CN 103413022B CN 201310270981 A CN201310270981 A CN 201310270981A CN 103413022 B CN103413022 B CN 103413022B
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- 238000011084 recovery Methods 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 38
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- 238000003860 storage Methods 0.000 claims abstract description 12
- 239000003921 oil Substances 0.000 claims description 411
- 238000011524 similarity measure Methods 0.000 claims description 19
- 238000013178 mathematical model Methods 0.000 claims description 14
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- 238000011161 development Methods 0.000 description 17
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- 238000004391 petroleum recovery Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
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Abstract
The invention provides an auxiliary device and an auxiliary method for calibrating crude oil recovery ratio. The crude oil recovery rate calibration auxiliary device comprises: an analog reservoir information storage unit for storing an analog reservoir database in which information on a plurality of reservoir characteristic parameters is stored for each preset analog reservoir; a target reservoir information acquisition unit that acquires known reservoir characteristic parameter information for a target reservoir; an analog reservoir initial selection unit for selecting an initial selection analog reservoir from the analog reservoirs based on information on a target reservoir; a reservoir similarity calculation unit for calculating the similarity between the first-selected analog reservoir and the target reservoir; an analog reservoir final selection section for selecting a preliminary selection analog reservoir having a similarity to the target reservoir of a predetermined value or more from the preliminary selection analog reservoirs as a final selection analog reservoir based on the similarity between the preliminary selection analog reservoir and the target reservoir calculated by the reservoir similarity calculation section; and a final-selected-analog-reservoir notification unit that notifies the final-selected-analog reservoir selected by the analog-reservoir final-selection unit.
Description
Technical field
The present invention relates to a kind of oil recovery factor calibration auxiliary device and householder method thereof, particularly relate under SEC criterion
Oil recovery factor calibration auxiliary device and householder method thereof.
Background technology
December in 2008 U.S. SEC on the 31st (Securities and Exchange Commission, conclude the business by American securities
Committee) issue oil and gas reserves assessment New standard, analogy oil reservoir is given explicitly defines first, and be recognized analogy oil reservoir and exist
Effect in PUD (Proved Undeveloped, it was demonstrated that in untapped) Reserves Assessment, is particularly recognized it and gathers at PUD
Effect in rate demarcation.Analogy oil reservoir in SEC New standard refers to: when being used in resource assessment, has similar to target reservoir
Rock and fluid properties, reservoir condition (degree of depth, temperature and pressure) and drive mechanism, compared with target reservoir, the development phase
Further oil reservoir.Therefore, it can be the oil recovery factor assessment offer foundation of the target reservoir under finite data.Analogy
Oil reservoir needs have several same or analogous feature with target reservoir, specific as follows: identical geologic horizon, identical deposition
Environment, similar geological structure, identical drive mechanism.SEC New standard requires that the gross properties of target reservoir must be better than class
Compare oil reservoir.(Sun Qiu grades, analogy oil-gas reservoir method for building up research under U.S.'s SEC New standard, marine oil and gas geology, and 16 (4),
P71；Sun Qiu grades, analogy oil-gas reservoir design of database system and research and development under U.S.'s SEC New standard, and petroleum industry computer should
With, the 2nd phase in 2011, P11)
Although, SEC discloses oil reservoir analogy criterion, but does not the most still have and oil recovery factor calibration householder method and class
Publishing of the document more relevant than flow process or patent.The most also not according to the exploitation information of analogy oil reservoir, class is utilized
Oil recovery factor and the application of assessment PUD reserves of spotting oil reservoir is come than method.Thus carrying out crude oil for target reservoir
Recovery ratio timing signal, the information of further oil reservoir of substantial amounts of development phase is not used effectively, it is impossible to preferably carry out
The oil recovery factor calibration of target reservoir.
Summary of the invention
It is an object of the invention to provide a kind of SEC of meeting criterion, can effectively utilize substantial amounts of analogy reservoir information, auxiliary
User is helped to carry out the oil recovery factor calibration auxiliary device of oil recovery factor calibration and the householder method of target reservoir, for demarcating oil
Oil recovery factor, assessment crude oil reserve and the CNPC hidden carries out reserves and declares offer support in American securities trade market.
An object of the present invention is to provide a kind of oil recovery factor calibration auxiliary device, and described auxiliary device includes:
Analogy reservoir information storage part, it stores analogy Reservoir Data storehouse, in this analogy Reservoir Data storehouse for set in advance each
Analogy oil reservoir stores the information of its multiple characteristics of reservoirs parameters；Target reservoir information acquiring section, it obtains it for target reservoir
Known each characteristics of reservoirs parameter information；Analogy oil reservoir primary election portion, its information based on target reservoir is from above-mentioned analogy oil reservoir
Select primary election analogy oil reservoir；Oil reservoir Similarity Measure portion, it calculates the similarity of primary election analogy oil reservoir and target reservoir；Analogy
Oil reservoir selects portion eventually, and it is according to the similarity of the primary election analogy oil reservoir calculated by oil reservoir Similarity Measure portion with target reservoir, from this
A little primary election analogy oil reservoirs are selected the primary election analogy oil reservoir more than predetermined value of the similarity with target reservoir as selecting class eventually
Compare oil reservoir；Selecting analogy oil reservoir notification unit eventually, its described end that portion of choosing chooses eventually by described analogy oil reservoir selects analogy oil reservoir to lead to
Know to user；
Described analogy oil reservoir primary election step carries out twice selection, when selecting for the first time according to analogy oil reservoir and target reservoir
The information of the oil reservoir basic feature possessed, selects the oil reservoir basic feature same or analogous analogy oil reservoir with target reservoir,
When second time selects according to the value for the target reservoir in characteristics of reservoirs parameter be known characteristics of reservoirs parameter respectively in advance
First set respectively limits span, selects described characteristics of reservoirs parameter from the described analogy oil reservoir selected for the first time
Value is in the analogy oil reservoir in described restriction span, as described primary election analogy oil reservoir；
Described oil reservoir Similarity Measure portion calculates each primary election analogy oil reservoir and target reservoir by following mathematical model
Similarity:
A target reservoir, b analogy oil reservoir, S (a, b) similarity of analogy oil reservoir b and target reservoir a, aiTarget
The i-th characteristics of reservoirs parameter value of oil reservoir, biThe i-th characteristics of reservoirs parameter value of analogy oil reservoir, λiI-th characteristics of reservoirs
The weight coefficient of parameter, represents this proportion shared by i-th characteristics of reservoirs parameter, i positive integer, and i≤n, n participate in calculating
The number of characteristics of reservoirs parameter,
The value of the similarity calculated by above-mentioned mathematical model is the biggest, represents the similarity of analogy oil reservoir and target reservoir
The highest.
Another object of the present invention is to provide a kind of oil recovery factor calibration householder method, it comprises the steps: class
Ratio reservoir information storing step, stores analogy Reservoir Data storehouse, for each class set in advance in this analogy Reservoir Data storehouse
The information of its multiple characteristics of reservoirs parameters is stored than oil reservoir；Target reservoir information acquisition step, has obtained it for target reservoir
The characteristics of reservoirs parameter information known；Analogy oil reservoir primary election step, information based on target reservoir selects from above-mentioned analogy oil reservoir
Go out primary election analogy oil reservoir；Oil reservoir Similarity Measure step, calculates the similarity of primary election analogy oil reservoir and target reservoir；Analogy oil reservoir
Select step eventually, according to the similarity of the primary election analogy oil reservoir calculated by oil reservoir Similarity Measure step Yu target reservoir, from this
A little primary election analogy oil reservoirs are selected the primary election analogy oil reservoir more than predetermined value of the similarity with target reservoir as selecting class eventually
Compare oil reservoir；Selecting analogy oil reservoir notifying process eventually, the described end that the portion of choosing chooses eventually by described analogy oil reservoir selects analogy oil reservoir to lead to
Know to user；
Described analogy oil reservoir primary election step carries out twice selection, when selecting for the first time according to analogy oil reservoir and target reservoir
The information of the oil reservoir basic feature possessed, selects the oil reservoir basic feature same or analogous analogy oil reservoir with target reservoir,
When second time selects according to the value for the target reservoir in characteristics of reservoirs parameter be known characteristics of reservoirs parameter respectively in advance
First set respectively limits span, selects described characteristics of reservoirs parameter from the described analogy oil reservoir selected for the first time
Value is in the analogy oil reservoir in described restriction span, as described primary election analogy oil reservoir；
Calculating the mathematical model that the similarity of each primary election analogy oil reservoir and target reservoir used is:
A target reservoir, b analogy oil reservoir, S (a, b) similarity of analogy oil reservoir b and target reservoir a, aiTarget
The i-th characteristics of reservoirs parameter value of oil reservoir, biThe i-th characteristics of reservoirs parameter value of analogy oil reservoir, λ weight coefficient, represent
Proportion shared by certain characteristic parameter, i positive integer, the number of the characteristics of reservoirs parameter that i≤n, n participation calculates,
The value of the similarity calculated by above-mentioned mathematical model is the biggest, represents the similarity of analogy oil reservoir and target reservoir
The highest.
Oil recovery factor calibration auxiliary device and the analogy oil reservoir of householder method offer according to the present invention select result eventually, use
Family can calibrate rapidly the oil recovery factor of target reservoir with reference to the oil recovery factor and development Report selecting oil reservoir eventually.
Compared with prior art, it is an advantage of the current invention that:
(1) present invention establishes a kind of oil recovery factor calibration auxiliary device first, and described device is installed simple, compatible
By force, can match with the soft and hardware environment of conventional computer and PC.(2) present invention establishes a kind of oil recovery factor mark first
Determine householder method and analogy flow process, the method and flow logic are strong, simple, efficiently.(3) applied range of the present invention, both fitted
For assisting the oil recovery factor calibration of SEC criterion, it is also applied for assisting the mark of conventional oil field development process Crude Oil recovery ratio
Fixed.(4) proposing the mathematical model of calculating oil reservoir similarity, this model is applied widely, highly reliable, is applicable to sandstone oil
Tibetan, Carbonate Reservoir, low-permeability oil deposit, heavy crude reservoir etc..
Oil recovery factor calibration auxiliary device and the householder method of present invention design have the effect that applied widely,
By oil recovery factor calibration auxiliary device and the auxiliary of householder method of the present invention, it is possible to quickly and accurately and reliably carry out oil
Hide oil recovery factor calibration.It is applicable to sandstone oil reservoir, Carbonate Reservoir, low-permeability oil deposit, heavy crude reservoir etc.；Can quickly from
Filtering out the analogy oil reservoir higher with target reservoir similarity in oil reservoir analogy storehouse, the time used is typically smaller than 5 minutes；With above-mentioned
Analogy demarcate oil recovery factor compared with the oil recovery factor obtained by the method such as empirical equation, digital simulation, error
General within 10%, the demarcation for target reservoir oil recovery factor provides strong foundation.
Accompanying drawing explanation
Fig. 1 is the structured flowchart for oil recovery factor calibration auxiliary device is described.
Fig. 2 is the flow chart illustrating oil recovery factor calibration householder method.
Fig. 3 is the flow chart of the variation illustrating oil recovery factor calibration householder method.
Detailed description of the invention
The detailed description of the invention of the present invention is described with reference to the accompanying drawings.
(structure of oil recovery factor calibration auxiliary device)
First the structure of the oil recovery factor calibration auxiliary device 10 of the present invention is described.As it is shown in figure 1, oil recovery factor mark
Determine auxiliary device 10 and include analogy reservoir information storage part 11, target reservoir information acquiring section 12, analogy oil reservoir primary election portion 13, oil
Hide Similarity Measure portion 14, analogy oil reservoir select portion 15 eventually and select analogy oil reservoir notification unit 16 eventually.
Analogy Reservoir Data storehouse is stored, in advance in this analogy Reservoir Data storehouse in analogy reservoir information storage part 11
Each analogy oil reservoir first set stores the information of its multiple characteristics of reservoirs parameters, and each analogy oil reservoir stores its exploitation report
Accuse.When setting up analogy Reservoir Data storehouse, Internet resources and CNPC's inside information can be passed through, collect the most all sidedly
And arrange mondial geology and development data is reliable, development scheme rationally, recovery ratio assessment rationally and is in exploitation
Later stage or discarded multiple oil reservoirs are as analogy oil reservoir.As the characteristics of reservoirs parameter of each analogy oil reservoir, including reflection oil reservoir
The characteristics of reservoirs parameter of essential information, reservoir characteristic, characteristic of fluid, temperature and pressure characteristic, reserves situation, Developing status etc..
Analogy reservoir information storage part 11 can utilize floppy disk, hard disk, CD, disk, semiconductor memory, flash memory etc. various non-volatile
Property memorizer constitute.
Above-mentioned analogy Reservoir Data storehouse is open, can the most constantly add and improve analogy oil reservoir
Information, analogy reservoir information is the most perfect, is more conducive to preferably going out the analogy oil reservoir the highest with target reservoir similarity degree.Therefore,
Oil recovery factor calibration auxiliary device 10 can also have analogy reservoir information update section 17, and it is to being stored in analogy reservoir information
Analogy Reservoir Data storehouse in storage part 11 is updated, and adds new analogy oil reservoir, or updates the oil of existing analogy oil reservoir
Hide characteristic parameter information.This analogy reservoir information update section 17 can utilize the input equipment such as mouse, keyboard to realize.Certainly should
Analogy reservoir information update section 17 is not that present invention institute is prerequisite.
Target reservoir information acquiring section 12 obtains the characteristics of reservoirs parameter information of target reservoir, such as, obtain target reservoir
Characteristic parameter information including oil reservoir essential information, reservoir characteristic, characteristic of fluid, temperature and pressure characteristic.Due to target
Oil reservoir is a new oil reservoir, and only part characteristics of reservoirs parameter is known.If the parameter of target reservoir is incomplete, it may not be necessary to
Obtain the value of whole characteristics of reservoirs parameter, but must obtain porosity, permeability, original water saturation, crude oil formation viscosity,
Mobility, oil density etc. can reflect the key parameter of characteristics of reservoirs.Target reservoir information acquiring section 12 can be by by user
The input equipment such as keyboard, mouse is utilized to input, or by reading in from storage medium, or from other electronics being connected
Equipment reads in or is downloaded the characteristics of reservoirs parameter value obtaining target reservoir by network.
Analogy oil reservoir primary election portion 13 filters out the oil reservoir meeting analogy conditions as primary election class from analogy Reservoir Data storehouse
Compare oil reservoir.Primary election analogy oil reservoir is selected for Similarity Measure by twice selection by analogy oil reservoir primary election portion 13.
When selecting for the first time, analogy oil reservoir primary election portion 13 is by the analogy oil reservoir in above-mentioned analogy Reservoir Data storehouse and target
Oil reservoir is compared, and selects the oil reservoir basic feature same or analogous analogy oil reservoir with target reservoir, specifically, select with
Target reservoir has identical geologic horizon, identical depositional environment, similar geological structure, identical drive mechanism with similar
The analogy oil reservoir of lithology.
Analogy oil reservoir primary election portion 13 carries out second time from the analogy oil reservoir selected for the first time and selects.According to for each oil
Hiding the restriction span set by characteristic parameter, the value selecting each characteristics of reservoirs parameter meets each restriction span
Analogy oil reservoir, as primary election analogy oil reservoir.So that the primary election analogy oil reservoir selected has similar rock to target reservoir
With fluid properties, reservoir condition etc..
Oil reservoir Similarity Measure portion 14 calculates the primary election analogy oil reservoir and target selected by analogy oil reservoir primary election portion 13
Similarity between oil reservoir.
Oil reservoir Similarity Measure portion 14 calculates the mathematics that the similarity between primary election analogy oil reservoir and target reservoir is used
Model is:
(model 1)
A target reservoir, b analogy oil reservoir, S (a, b) similarity of analogy oil reservoir b and target reservoir a, aiTarget
The i-th characteristics of reservoirs parameter value of oil reservoir, biThe i-th characteristics of reservoirs parameter value of analogy oil reservoir, λiI-th characteristics of reservoirs
The weight coefficient of parameter, represents the proportion shared by certain characteristic parameter, i positive integer, and i≤n, n participate in the characteristics of reservoirs calculated
The number of parameter.
The characteristic ginseng value of primary election analogy oil reservoir and target reservoir is updated in above-mentioned model (1), calculates similarity S
(a, b), the value of the similarity calculated is the biggest, represents that the similarity between primary election analogy oil reservoir and target reservoir is the highest.
Analogy oil reservoir selects portion 15 according to each primary election analogy oil reservoir calculated by oil reservoir Similarity Measure portion 14 and target eventually
Similarity between oil reservoir, selects one or several primary election analogy oil reservoirs higher with target reservoir similarity, its oil reservoir
Feature should be closely similar with target reservoir, and reservoir properties is worse than target reservoir the most again.
Select analogy oil reservoir notification unit 16 that one or several ends being selected portion 15 to select by analogy oil reservoir eventually are selected analogy eventually
Oil reservoir and these respective oil recovery factors of analogy oil reservoir thereof notify to user.
User is with reference to the oil recovering of one or several primary election analogy oil reservoirs selecting analogy oil reservoir notification unit 16 to notify eventually
Rate and development Report, rationally determine the oil recovery factor scope of target reservoir.
Above-mentioned analogy oil reservoir primary election portion 13, oil reservoir Similarity Measure portion 14 and analogy oil reservoir select portion 15 etc. to pass through eventually
The computer program being performed to be stored in storage medium by CPU etc. realizes.Select eventually analogy oil reservoir notification unit 16 can utilize by
The display display that liquid crystal display or plasma scope etc. are constituted selects analogy oil reservoir and oil recovery factor thereof to notify eventually
To user.
(oil deposil erude petroleum recovery ratio demarcation auxiliary movement)
The auxiliary movement flow process that oil deposil erude petroleum recovery ratio is demarcated is illustrated below according to accompanying drawing 2.
The most in step sl, analogy reservoir information storage part 11 stores the analogy Reservoir Data storehouse set up.Setting up
During analogy Reservoir Data storehouse, first, the multiple characteristics of reservoirs parameters characterizing characteristics of reservoirs are determined, in the present embodiment
Illustrate and determine such as 65 characteristics of reservoirs parameters.Secondly, by Internet resources and CNPC's inside information, the most comprehensively
Mondial geology is collected and is arranged on ground and development data is reliable, development scheme reasonable, recovery ratio assessment rationally and is in
Mid-later development phase or discarded oil reservoir are referred to as analogy oil reservoir.In present embodiment, it is shown that have collected 1453 oil reservoir conducts
The example of analogy oil reservoir.For the ease of classified inquiry, above-mentioned 1453 oil reservoirs are assigned to 8 areas, i.e. Europe, Africa, in
East, the Central Asia, Asia-Pacific, South America, North America and the Pacific region.In analogy Reservoir Data storehouse, in these 1453 analogy oil reservoirs
Each oil reservoir, all store characteristics of reservoirs parameter list as shown in table 1, and each analogy oil reservoir enclosed this analogy oil reservoir
Development Report, its content includes oil reservoir planar configuration figure, oil reservoir profile, well location map, development features, production history etc..On
State each characteristics of reservoirs parameter list and oil reservoir development report forms analogy Reservoir Data storehouse.
Table 1 characteristics of reservoirs parameter list
Certainly, 1453 oil reservoirs and 65 the characteristics of reservoirs parameters that use in above-mentioned explanation are only an example,
Can also be other quantity.Owing to this analogy Reservoir Data storehouse is open, can be in use by analogy oil
Hide information update section 17 and constantly add and improve analogy reservoir information, such as, add new analogy oil reservoir, or update existing class
Characteristics of reservoirs parameter information than oil reservoir.
The most in step s 2, target reservoir information acquiring section 12 obtains the mesh of the target as oil recovery factor to be demarcated
The value of crucial characteristics of reservoirs parameter known to the part of mark oil reservoir A, including porosity, permeability, original water saturation, crude oil
Stratum viscosity, mobility, oil density etc. can reflect the value of the key parameter of characteristics of reservoirs, as shown in table 2 below.
Table 2 target reservoir A characteristic parameter
The most in step s3, analogy oil reservoir primary election portion 13 selects qualified analogy oil from analogy Reservoir Data storehouse
Hide as primary election analogy oil reservoir.This selection course is divided into selection for the first time and second time to select, in first time selection course, and example
Such as the known features as described in above-mentioned table 2 according to target reservoir A, by geologic horizon in analogy Reservoir Data storehouse it is
Bangestan, depositional environment be low gradient reef, geological structure type be that anticline, drive mechanism are bottom water and principal lithologic is stone
The analogy oil reservoir of limestone remains, and filters off other analogy oil reservoirs.
Select according to selecting result to carry out second time for the first time.In second time selects, first set analogy oil reservoir and mesh
The deviation of each characteristics of reservoirs parameter of mark oil reservoir.Then according to set deviation, and according to each characteristic parameter of target reservoir
Numerical value, for each characteristics of reservoirs parameter set limit span.Such as it is set to each oil of analogy oil reservoir and target reservoir
Hide the deviation no more than ± 50% of characteristic parameter, then according to the characteristics of reservoirs value of the target reservoir shown in table 2, analogy oil reservoir
Porosity limit span as 10～30%, permeability limit span as 50～150mD, original water saturation
Limit span as 10～30%, crude oil formation viscosity limit span as 10～30cp, the restriction value of mobility
Scope is 2.5～7.5mD/cp, oil density limit span as 10～30, the restriction value model of primary Korean pine forest
To enclose be 100～300SCF/STB, oil volume factor limit span as 0.6～1.8, the restriction of reservoir pressure coefficient takes
Value scope is 0.6～1.8, is retained by the value of each characteristics of reservoirs parameter all analogy oil reservoirs in above-mentioned restriction span
Come, filter off other analogy oil reservoirs, so that analogy oil reservoir has similar rock and fluid properties, reservoir condition to target reservoir
Deng.
Above deviation setting being become 50%, this is the most only an example, it is also possible to be set to other deviation value.
The most above-mentioned analogy oil reservoir can also be different with the deviation of each characteristic parameter of target reservoir, such as analogy oil reservoir and mesh
The porosity deviation of mark oil reservoir can be ± 50%, permeability deviation can be ± 60%, viscosity of crude deviation can be ±
70%.The value of deviation rationally should determine according to characteristics of reservoirs and demand.
Assume the selection by this step S3, select 5 analogy oil reservoirs meeting analogy conditions, be referred to as primary election class
Ratio oil reservoir, respectively B, C, D, F, F.
In step s 4, oil reservoir Similarity Measure portion 14 uses above-mentioned mathematical model (1), calculate respectively oil reservoir B, C, D, F,
The similarity of F Yu A.Above-mentioned mathematical model (1) is characterised by, one, contains reflection characteristics of reservoirs in this mathematical model
Key characterization parameter；Its two, not every characteristics of reservoirs parameter is required for participating in calculating, but comes rationally according to characteristics of reservoirs
Select；Its three, the weight coefficient λ of each characteristics of reservoirs parameter used in mathematical model (1) is variable, different types of oil
Hiding, λ value is different, and the value of λ depends on characteristics of reservoirs and tentative calculation.
Before calculating similarity, first-selection determines the characteristics of reservoirs parameter participating in calculating and each characteristics of reservoirs participating in calculating
The weight coefficient of parameter.The characteristics of reservoirs parameter and the weight coefficient value that participate in calculating in present embodiment are the most as shown in table 3.
Table 3 participates in characteristics of reservoirs parameter and the weight coefficient value calculated
Utilize each characteristics of reservoirs parameter shown in above-mentioned table 3 and weight coefficient value, be stored in class according to by step S1
Each characteristics of reservoirs parameter value than analogy oil reservoir B, C, D, F, the F stored in reservoir information storage part and taking in step s 2
Each characteristics of reservoirs parameter value of the target reservoir obtained, calculates above-mentioned 5 analogy oil reservoirs and target reservoir by mathematical model (1)
Similarity, such as shown in table 4.
Table 4 sequencing of similarity
Select from primary election analogy oil reservoir according to the Similarity Measure result of step S4 the most in step s 5 and select class eventually
Ratio oil reservoir, for the demarcation of the oil recovery factor of target reservoir.Specifically, a predetermined threshold value is first set, by each
Primary election analogy oil reservoir compares with similarity and this threshold value of target reservoir.When certain primary election analogy oil reservoir and target reservoir
When similarity is more than this threshold value, it is determined that high with the similarity of target reservoir for this primary election analogy oil reservoir, when less than this threshold value,
It is judged to that this primary election analogy oil reservoir is low with the similarity of target reservoir.The primary election high with the similarity of target reservoir will be judged as
Analogy oil reservoir is chosen as selecting analogy oil reservoir eventually.
For example, first set a threshold value 0.7, it is believed that similarity more than or equal to this threshold value primary election analogy oil reservoir with
The similarity of target reservoir A is high, understands from above table 4, and the similarity of analogy oil reservoir B, C, D and target reservoir A is all 0.7
Above, therefore analogy oil reservoir B, C, D are higher with the similarity of target reservoir A, and analogy oil reservoir E and F is similar to target reservoir A
Spend relatively low.Therefore analogy oil reservoir B, C, D are selected as selecting analogy oil reservoir eventually.
The most in step s 6, analogy oil reservoir notification unit 16 is selected to select analogy oil reservoir to notify to user the end selected eventually.
Analogy oil reservoir can be selected to notify to client by the end gone out selected by showing over the display.Analogy oil reservoir can also be selected with whole
The respective oil recovery factor of analogy oil reservoir is selected also to notify to user eventually these together.Can also in addition to oil recovery factor,
Also the part characteristics of reservoirs parameter value of analogy oil reservoir, development Report will be selected to be collectively notified user eventually.In the above example, choosing eventually
Analogy oil reservoir B, C, D are notified to user by analogy oil reservoir notification unit 16.
User, according to selecting analogy oil reservoir and relevant information thereof the end notified, analyzes and selects analogy oil reservoir and target reservoir eventually
Overall reservoir properties, get rid of overall reservoir properties and be better than and end of target reservoir select analogy oil reservoir, select class according to remaining end
The oil recovery factor of target reservoir is determined than oil reservoir.Specifically, when selecting analogy oil reservoir remaining multiple qualified ends,
By certain value that the oil recovery factor calibration of target reservoir is the oil recovery factor interval selecting analogy oil reservoir the plurality of end, such as should
Multiple ends select the minima in the oil recovery factor of analogy oil reservoir.Which value being specifically identified as in this interval, needs oil reservoir work
Depending on Cheng Shi selects the development Report of analogy oil reservoir with reference to described end.
If final only remaining next qualified end selects analogy oil reservoir, then by the oil recovery factor calibration of target reservoir
For selecting the oil recovery factor of analogy oil reservoir equal to this end.
In the above example, select analogy oil reservoir notification unit 16 to be notified of eventually and select analogy oil reservoir B, C, D eventually.Reservoir engineer divides
The reservoir properties separating out target reservoir A is better than B and C generally, is worse than D, thus according to mentioned above principle, screens out analogy oil reservoir D,
The oil recovery factor of spotting oil reservoir A is carried out according to remaining analogy oil reservoir B and C.In conjunction with the development Report of oil reservoir B, C, go bail for
Keep value, it is judged that the recovery ratio of target reservoir A is the minima 30% in the oil recovery factor of analogy oil reservoir B and C.This is only to lift
Example, different reservoir engineers may determine that other values between 30～35%.
The most such as when the threshold value used in step S5 is 0.85, only analogy oil reservoir B is eligible, therefore judges oil reservoir
The oil recovery factor value of A is equal to 35%.
Pass through above-mentioned steps, it is possible to realize following purpose: according to target reservoir information from great thousands of of quantity of information
Individual analogy oil reservoir is selected and selects analogy oil reservoir most useful end.Selecting analogy oil reservoir described end can be reservoir engineer's spotting
The oil recovery factor of oil reservoir provides strong foundation and auxiliary.Reservoir engineer selects analogy oil reservoir according to end provided by the present invention,
And combine experience and can calibrate the oil recovery factor of target reservoir quickly and accurately.
(variation 1)
In the above-described embodiment, it is possible to select one or several qualified analogy oil reservoirs as primary election analogy
Oil reservoir, calculates the similarity between they and target reservoir.But may not select sometimes according to set alternative condition
Select out qualified primary election analogy oil reservoir.In this case it is necessary to the alternative condition relaxing primary election analogy oil reservoir comes again
Select.Fig. 3 illustrates the flow chart of the variation of above-mentioned embodiment.
As it is shown on figure 3, after the primary election analogy oil reservoir of step S3 selects step, judge whether in step S3-1
The most qualified primary election analogy oil reservoir, select primary election analogy oil reservoir.If there is qualified
Primary election analogy oil reservoir, then enter step S5.If there is no qualified primary election analogy oil reservoir, then in step S3-2 suitably
Relax the condition of selection, reset the deviation of each characteristic parameter of analogy oil reservoir and target reservoir, and according to set inclined
Difference sets the restriction span of each characteristics of reservoirs parameter, or relaxes restriction value model only for part characteristics of reservoirs parameter
Enclose.
If such as set less than ± 50% in the deviation being set to each characteristic parameter of analogy oil reservoir and target reservoir
During for the restriction span of each characteristics of reservoirs parameter, it is impossible to filter out qualified primary election analogy oil reservoir, then by analogy
The deviation setting of oil reservoir characteristic parameter each with target reservoir becomes and sets the limit for each characteristics of reservoirs parameter less than ± 60%
Determine span, or relax restriction span only for part characteristics of reservoirs parameter, re-start primary election analogy oil reservoir
Selection.This process reselected can also repeat repeatedly.Even if if still cannot after repeatedly relaxing alternative condition
Select suitable primary election analogy oil reservoir, it is also possible to terminate flow process.Certainly the most here ± 50%, ± 60% be only example,
According to circumstances suitably determine with experience during actually used.
Oil recovery factor calibration auxiliary device the most recited above and householder method can also be by making personal computer
Or the oil deposil erude petroleum recovery ratio calibrating procedure that the computer system such as work station performs to be recorded in the recording medium realizes.This
Outward, it is also possible to via the common line of LAN, wide area network (LAN/WAN) or the Internet etc., this computer system is connected
Use to enterprising enforcement of other equipment such as computer system or server.Now, the oil recovery factor calibration in above-mentioned embodiment
Auxiliary device can also obtain the characteristics of reservoirs parameter information of analogy oil reservoir via these networks, or is selected by primary election analogy oil reservoir
The oil recovery factor calibration result etc. selecting result or oil reservoir Similarity Measure result or target reservoir exports via these networks
The various outut devices (reader or printer etc.) connected, or these results are stored via depositing that these networks connect
In storage device (record medium and reading device etc. thereof).
It addition, the scope of the present invention is not limited to diagram the embodiment illustrated recorded, it is clear that without departing from this
The spirit and scope of invention, those skilled in the art can carry out various change and modification to the embodiment of the present invention.So, if
If the present invention these amendment and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then these change and
Modification is also contained in the present invention.
The above-mentioned oil recovery factor calibration auxiliary device of the present invention and householder method are except being applied to SEC criterion subscript stand oil
The oil recovery factor hidden, assessment crude oil reserve and carry out reserves in American securities trade market for CNPC and offer is provided has by force
It can also be used to the demarcation of conventional oil field development process Crude Oil recovery ratio outside the evidence of power.
Claims (11)
1. an oil recovery factor calibration auxiliary device, it is characterised in that described auxiliary device includes:
Analogy reservoir information storage part, it stores analogy Reservoir Data storehouse, for set in advance in this analogy Reservoir Data storehouse
Each analogy oil reservoir stores the information of its multiple characteristics of reservoirs parameters；
Target reservoir information acquiring section, it obtains each characteristics of reservoirs parameter information known to it for target reservoir；
Analogy oil reservoir primary election portion, its information based on target reservoir selects primary election analogy oil reservoir from above-mentioned analogy oil reservoir；
Oil reservoir Similarity Measure portion, it calculates the similarity of primary election analogy oil reservoir and target reservoir；
Analogy oil reservoir selects portion eventually, and it is similar to target reservoir according to the primary election analogy oil reservoir calculated by oil reservoir Similarity Measure portion
Degree, selects the primary election analogy oil reservoir conduct more than predetermined value of the similarity with target reservoir from these primary election analogy oil reservoirs
Select analogy oil reservoir eventually；
Select analogy oil reservoir notification unit eventually, its described end that described analogy oil reservoir eventually portion of choosing chooses is selected analogy oil reservoir notify to
User；
Described analogy oil reservoir primary election portion carries out twice selection, possesses according to analogy oil reservoir and target reservoir when selecting for the first time
The information of oil reservoir basic feature, selects the oil reservoir basic feature same or analogous analogy oil reservoir with target reservoir, second
Secondary is that known characteristics of reservoirs parameter presets respectively according to the value for the target reservoir in characteristics of reservoirs parameter when selecting
Respectively limit span, select from the described analogy oil reservoir selected for the first time the value of described characteristics of reservoirs parameter all from
Analogy oil reservoir in described restriction span, as described primary election analogy oil reservoir；
Described oil reservoir Similarity Measure portion calculates the phase of each primary election analogy oil reservoir and target reservoir by following mathematical model
Like degree:
A target reservoir, b analogy oil reservoir, S (a, b) similarity of analogy oil reservoir b and target reservoir a, aiTarget reservoir
I-th characteristics of reservoirs parameter value, biThe i-th characteristics of reservoirs parameter value of analogy oil reservoir, λiI-th characteristics of reservoirs parameter
Weight coefficient, represent this proportion shared by i-th characteristics of reservoirs parameter, i positive integer, i≤n, n participate in the oil reservoir calculated
The number of characteristic parameter,
The value of the similarity calculated by above-mentioned mathematical model is the biggest, represents the similarity of analogy oil reservoir and target reservoir more
High.
Oil recovery factor calibration auxiliary device the most according to claim 1, it is characterised in that described analogy oil reservoir primary election portion
The oil reservoir basic feature carrying out being used when selecting for the first time must include geologic horizon, depositional environment, geological structure, driving machine
Reason and lithology are whole, and described analogy oil reservoir primary election portion just selects from each analogy oil reservoir described when carrying out selecting for the first time
Geologic horizon, depositional environment, geological structure, drive mechanism and lithology and target reservoir same or analogous analogy oil reservoir.
Oil recovery factor calibration auxiliary device the most according to claim 1, it is characterised in that
The known characteristics of reservoirs parameter information of the target reservoir acquired by described target reservoir information acquiring section include porosity,
The initial saturation of permeability, crude oil, crude oil formation viscosity, mobility, oil density and original dissolving steam oil ratio (SOR).
Oil recovery factor calibration auxiliary device the most according to claim 1, it is characterised in that
Described oil recovery factor calibration auxiliary device has analogy reservoir information update section, and described analogy Reservoir Data storehouse is entered by it
Row updates.
Oil recovery factor calibration auxiliary device the most according to claim 1, it is characterised in that select described end analogy oil reservoir to lead to
Know that the described end selected is selected analogy oil reservoir and its oil recovery factor to be collectively notified user by portion.
6. an oil recovery factor calibration householder method, it is characterised in that comprise the steps:
Analogy reservoir information storing step, stores analogy Reservoir Data storehouse, for set in advance in this analogy Reservoir Data storehouse
Each analogy oil reservoir stores the information of its multiple characteristics of reservoirs parameters；
Target reservoir information acquisition step, obtains characteristics of reservoirs parameter information known to it for target reservoir；
Analogy oil reservoir primary election step, information based on target reservoir selects primary election analogy oil reservoir from above-mentioned analogy oil reservoir；
Oil reservoir Similarity Measure step, calculates the similarity of primary election analogy oil reservoir and target reservoir；
Analogy oil reservoir selects step eventually, according to the primary election analogy oil reservoir calculated by oil reservoir Similarity Measure step and target reservoir
Similarity, selects the primary election analogy oil reservoir more than predetermined value of the similarity with target reservoir from these primary election analogy oil reservoirs
As selecting analogy oil reservoir eventually；
Select analogy oil reservoir notifying process eventually, the described end that the described analogy oil reservoir eventually portion of choosing chooses is selected analogy oil reservoir notify to
User；
Described analogy oil reservoir primary election step carries out twice selection, possesses with target reservoir according to analogy oil reservoir when selecting for the first time
The information of oil reservoir basic feature, select the oil reservoir basic feature same or analogous analogy oil reservoir with target reservoir,
It is that known characteristics of reservoirs parameter sets the most in advance according to the value for the target reservoir in characteristics of reservoirs parameter during second selecting
Fixed respectively limits span, and the value selecting described characteristics of reservoirs parameter from the described analogy oil reservoir selected for the first time is equal
It is in the analogy oil reservoir in described restriction span, as described primary election analogy oil reservoir；
Calculating the mathematical model that the similarity of each primary election analogy oil reservoir and target reservoir used is:
A target reservoir, b analogy oil reservoir, S (a, b) similarity of analogy oil reservoir b and target reservoir a, aiTarget reservoir
I-th characteristics of reservoirs parameter value, biThe i-th characteristics of reservoirs parameter value of analogy oil reservoir, λ weight coefficient, represent that certain is special
Levying the proportion shared by parameter, i positive integer, i≤n, n participate in the number of the characteristics of reservoirs parameter calculated,
The value of the similarity calculated by above-mentioned mathematical model is the biggest, represents the similarity of analogy oil reservoir and target reservoir more
High.
Oil recovery factor calibration householder method the most according to claim 6, it is characterised in that described analogy oil reservoir primary election walks
Suddenly the oil reservoir basic feature carrying out being used when selecting for the first time must include geologic horizon, depositional environment, geological structure, driving
Mechanism and lithology are whole, in described analogy oil reservoir primary election step, when carrying out selecting for the first time from each analogy oil reservoir described
Geologic horizon, depositional environment, geological structure, drive mechanism and lithology and the same or analogous analogy of target reservoir is selected at the beginning of in
Oil reservoir.
Oil recovery factor calibration householder method the most according to claim 6, it is characterised in that
The known characteristics of reservoirs parameter information of target reservoir acquired in described target reservoir information acquisition step includes hole
The initial saturation of porosity, permeability, crude oil, crude oil formation viscosity, mobility, oil density and original dissolving steam oil ratio (SOR).
Oil recovery factor calibration householder method the most according to claim 6, it is characterised in that
Described oil recovery factor calibration householder method has analogy reservoir information and updates step, updates step at this analogy reservoir information
In Zhou, described analogy Reservoir Data storehouse is updated.
Oil recovery factor calibration householder method the most according to claim 6, it is characterised in that
When not selecting qualified primary election analogy oil reservoir in selecting step at described analogy oil reservoir, reset each oil
The restriction span of Tibetan characteristic parameter, to relax alternative condition, reselects primary election analogy oil reservoir.
11. oil recovery factor calibration householder methods according to claim 6, it is characterised in that select analogy oil at described end
Hide in notifying process, the described end selected is selected analogy oil reservoir and its oil recovery factor are collectively notified user.
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| CN107133879B (en) * | 2016-02-26 | 2021-06-15 | 中国石油化工股份有限公司 | Method for screening similar oil fields |
| CN109492840A (en) * | 2017-09-11 | 2019-03-19 | 中国石油天然气股份有限公司 | Method for determining daily oil production of single well without oil reservoir |
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