CN107563557A - Method and device for determining oil well yield reduction rate - Google Patents
Method and device for determining oil well yield reduction rate Download PDFInfo
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Abstract
The embodiment of the application discloses a method and a device for determining the yield decreasing rate of an oil well, wherein the method comprises the steps of acquiring production data of a yield decreasing stage of the oil well; fitting an exponential decreasing type, a harmonic decreasing type and a hyperbolic decreasing type according to decreasing index values of preset value intervals respectively according to the production data of the oil well yield decreasing stage to obtain fitting correlation coefficients and decreasing rates corresponding to the decreasing index values of the preset value intervals; sorting fitting correlation coefficients corresponding to the descending index values of the preset value intervals according to the size, and obtaining a descending rate corresponding to the maximum value of the fitting correlation coefficients; and determining the decreasing rate corresponding to the maximum value of the fitting correlation coefficient as the decreasing rate of the decreasing stage. By utilizing the method and the device, the yield reduction rate of the oil well can be determined more accurately, and the analysis and prediction accuracy of the yield reduction rule of the oil well is improved.
Description
Technical field
The present invention relates to oil field development data processing field, especially, is related to a kind of side for determining oil well output lapse rate
Method and device.
Background technology
During oil development, the analysis to the yield data of oil well is primarily to study the later yield that brings in
Production decline law, and future production decline trend is predicted, to instruct the measure of the modification scenario of oil reservoir, oil well to adjust work.
In the prior art to the research of the production decline rule of waterflooding extraction oil well, mainly by rank of successively decreasing
The creation data of the oil well of section is fitted analysis, the typically qualitative analysis by a large amount of creation datas to certain oil well or profit
The production decline law of associated oil field is predicted with simulated experiment analysis.As the A of patent of invention CN 106014365 provide a kind of prediction
The method of waterflooding development Production Decline Prediction of Oilfield rate, by carrying out water drive oil displacement test to oil field rock sample, obtain Reservoir behavior point
Production decline rate change curve in analysis, so as to reflect the parsing relation of production decline rate and recovery percent of reserves in production process.Therefore,
In production application, the analysis mode of oil well output production decline law is usually by geological environment, production process, artificial subjective factor
Influence, cause the precision of prediction of oil well output lapse rate to reduce.
The prediction of judgement and decline trend of the prior art to production decline rule is not accurate enough, needs one kind in the industry more
The method for accurately determining oil well output lapse rate.
The content of the invention
The purpose of the embodiment of the present application is to provide a kind of method and device for determining oil well output lapse rate, can be more
The production decline rate of oil well is accurately determined, improves the accuracy of the analysis of oil well output production decline law and prediction.
To reach above-mentioned purpose, on the one hand, the embodiment of the present application provides a kind of processing method of tomographic statics, bag
Include：
Obtain the creation data of oil well output depletion stage；
Exponential decrease type, harmonic decline type, hyperbolic are passed according to the creation data of the oil well output depletion stage
Subtract type to be fitted respectively by the decline exponent value at default value interval, obtain the decline exponent value at the default value interval
Corresponding fitting correlation coefficient and lapse rate；
Fitting correlation coefficient corresponding to the decline exponent value at the default value interval is ranked up by size, obtains institute
State lapse rate corresponding to the maximum of fitting correlation coefficient；
Lapse rate corresponding to the maximum of the fitting correlation coefficient is defined as to the lapse rate of the depletion stage.
The method of the embodiment of the present application stand oil well production lapse rate really, the finger that successively decreases to the default value interval
Fitting correlation coefficient is ranked up by size corresponding to numerical value, obtains lapse rate corresponding to the maximum of the fitting correlation coefficient
Afterwards, in addition to：
Decline type corresponding to the maximum of the fitting correlation coefficient, decline exponent value are obtained, the fitting is related
Decline type, decline exponent value are defined as the Decline type of the depletion stage, decline exponent value corresponding to the maximum of coefficient.
The method of the embodiment of the present application stand oil well production lapse rate really, it is described according to the oil well output depletion stage
Creation data presses the decline exponent value point at default value interval to exponential decrease type, harmonic decline type, hyperbolic decline type
It is not fitted, including：
Based on Decline type discrimination formula, exponential decrease type, harmonic decline type, hyperbolic decline type are taken as default
The decline exponent value at value interval is fitted respectively；
Decline type discrimination formula corresponding to the exponential decrease type includes：
Decline type discrimination formula corresponding to the hyperbolic decline type includes：0 ＜ n ＜
1；
Decline type discrimination formula corresponding to the harmonic decline type includes：
Wherein, qrFor the initil output of the depletion stage, q is the yield of any instant of the depletion stage, DrTo pass
Lapse rate, t are the production time, and n is decline exponent value.
The method of the embodiment of the present application stand oil well production lapse rate really, it is described according to the oil well output depletion stage
Creation data presses the decline exponent value point at default value interval to exponential decrease type, harmonic decline type, hyperbolic decline type
It is not fitted, obtains fitting correlation coefficient and lapse rate corresponding to the decline exponent value at the default value interval, including：
The left end of the Decline type discrimination formula of another the exponential decrease type, hyperbolic decline type and harmonic decline type
For Y, right-hand member X, Y corresponding to the decline exponent value for calculating the default value interval according to the creation data of the depletion stage
And X；
Y and X corresponding to the decline exponent value at the default value interval is fitted, obtains the default value interval
Decline exponent value corresponding to fitting correlation coefficient and lapse rate.
The method of the embodiment of the present application stand oil well production lapse rate really, the production for obtaining oil well output depletion stage
Data, including：
Oil well output and production time relation curve are drawn according to the creation data of oil well；
The creation data of the oil well output depletion stage is determined according to the oil well output and production time relation curve.
The method of the embodiment of the present application stand oil well production lapse rate really, the oil well output depletion stage are passed including elasticity
Derogatory section, water drive depletion stage and steady depletion stage；
The elastic depletion stage is persistently decremented to water filling from first maximum at the initial stage of operation including oil well output and imitated
The stage of the first minimum value afterwards；
The water drive depletion stage include oil well output from water filling imitated after the second maximum be persistently decremented to second most
The stage of small value, the second minimum value of the oil well output include the fitting a straight line of the water drive depletion stage production curve with putting down
Yield corresponding to the joining of the fitting a straight line of steady depletion stage production curve；
The steady depletion stage is persistently passed including oil well output from second minimum value to production time extending direction
The stage subtracted.
The method of the embodiment of the present application stand oil well production lapse rate really, in addition to：
Degree of successively decreasing according to belonging to the lapse rate of the depletion stage determines the depletion stage, the degree bag that successively decreases
Rapid decrement is included, medium successively decrease and successively decreases at a slow speed；
The degree of successively decreasing according to belonging to the lapse rate determines the depletion stage, including：
When lapse rate is more than first threshold, degree of successively decreasing is rapid decrement；
When lapse rate is less than or equal to first threshold more than or equal to Second Threshold, degree of successively decreasing is successively decreased to be medium；
When lapse rate is less than first threshold, degree of successively decreasing is to successively decrease at a slow speed；
The first threshold is more than Second Threshold.
The method of the embodiment of the present application stand oil well production lapse rate really, it is described to determine successively decreasing belonging to the depletion stage
After degree, in addition to：
Production decline overall target is calculated according to the creation data of oil well, the overall target includes tiring out yield and list initial stage
The aqueous rising value of the tired yield in position；
Determine to tire out the first relation data of yield and the lapse rate of the elastic depletion stage and the list initial stage
The aqueous rising value and the second relation data of the lapse rate of the water drive depletion stage of the tired yield in position.
The method of the embodiment of the present application stand oil well production lapse rate really, first relation data and described of determining
After second relation data, in addition to：
Determine that the oil well at initial stage tires out yield to passing belonging to the elastic depletion stage using first relation data
Subtract the influence result of degree；
Determine that the unit tires out the aqueous rising value of yield to the water drive depletion stage using second relation data
The influence result of affiliated degree of successively decreasing.
On the other hand, the embodiment of the present application also provides a kind of device for determining oil well output lapse rate, including：
Data acquisition module, for obtaining the creation data of oil well output depletion stage；
Data fitting module, for the creation data according to the oil well output depletion stage to exponential decrease type, tune
It is fitted respectively by the decline exponent value at default value interval with Decline type, hyperbolic decline type, obtains described preset and take
It is worth fitting correlation coefficient and lapse rate corresponding to the decline exponent value at interval；
Lapse rate determining module, pressed for fitting correlation coefficient corresponding to the decline exponent value to the default value interval
Size is ranked up, and obtains lapse rate corresponding to the maximum of the fitting correlation coefficient, by the fitting correlation coefficient most
Lapse rate corresponding to big value is defined as the lapse rate of the depletion stage.
A kind of device of determination oil well output lapse rate of the embodiment of the present application, including processor and storage processor can be held
The memory of row instruction, the instruction is realized during the computing device to be comprised the following steps：
Obtain the creation data of oil well output depletion stage；
Exponential decrease type, harmonic decline type, hyperbolic are passed according to the creation data of the oil well output depletion stage
Subtract type to be fitted respectively by the decline exponent value at default value interval, obtain the decline exponent value at the default value interval
Corresponding fitting correlation coefficient and lapse rate；
Fitting correlation coefficient corresponding to the decline exponent value at the default value interval is ranked up by size, obtains institute
State lapse rate corresponding to the maximum of fitting correlation coefficient；
Lapse rate corresponding to the maximum of the fitting correlation coefficient is defined as to the lapse rate of the depletion stage.
A kind of method for determination oil well output lapse rate that this specification one or more embodiment provides, can be by obtaining
Take the creation data of oil well output depletion stage, and according to the creation data of the oil well output depletion stage to exponential decrease class
Type, harmonic decline type, hyperbolic decline type are fitted respectively by the decline exponent value at default value interval, are obtained described pre-
If fitting correlation coefficient and lapse rate corresponding to the decline exponent value at value interval, by the maximum pair of the fitting correlation coefficient
The lapse rate answered is defined as the lapse rate of the depletion stage.Using this specification embodiment scheme, can more it is accurate really
The lapse rate of stand oil well production, improve the accuracy of the analysis of oil well output production decline law and prediction.
Brief description of the drawings
, below will be to embodiment or existing in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments described in application, for those of ordinary skill in the art, do not paying the premise of creative labor
Under, other accompanying drawings can also be obtained according to these accompanying drawings.In the accompanying drawings：
Fig. 1 is a kind of schematic flow sheet of the embodiment of the method for determination oil well output lapse rate that this specification provides；
Fig. 2 is the schematic diagram of production decline stage division method in one embodiment that this specification provides；
Fig. 3 is the fitting result schematic diagram of index Decline type in another embodiment that this specification provides；
Fig. 4 is the fitting result schematic diagram of harmonic decline type in another embodiment that this specification provides；
Fig. 5 is the fitting result schematic diagram of hyperbolic decline type in another embodiment that this specification provides；
Fig. 6 is depletion stage division and the lapse rate meter of a certain actual oil well in another embodiment that this specification provides
Calculate schematic diagram；
Fig. 7 is the pass that the lapse rate of elastic depletion stage tires out oil-producing with initial stage in another embodiment that this specification provides
It is curve synoptic diagram；
Fig. 8 is that the lapse rate of water drive depletion stage tires out containing for yield with unit in another embodiment that this specification provides
The relation curve schematic diagram of appreciation waterborne；
Fig. 9 is a kind of modular structure signal of the device embodiment for determination oil well output lapse rate that this specification provides
Figure.
Embodiment
In order that those skilled in the art more fully understand the technical scheme in this specification, below in conjunction with this explanation
Accompanying drawing in book one or more embodiment, the technical scheme in this specification one or more embodiment is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only specification part of the embodiment, rather than whole embodiments.It is based on
Specification one or more embodiment, the institute that those of ordinary skill in the art are obtained under the premise of creative work is not made
There is other embodiment, should all belong to the scope of this specification embodiment scheme protection.
Fig. 1 is a kind of flow signal for embodiment of the method for determining oil well output lapse rate that this specification provides
Figure.Although present description provides such as following embodiments or method operating procedure shown in the drawings or apparatus structure, based on normal
Rule can either include operation less after more or part merges without performing creative labour in methods described or device
Step or modular unit.Necessary causality is not present in logicality the step of or in structure, the execution sequence of these steps
Or the modular structure of device is not limited to this specification embodiment or execution sequence shown in the drawings or modular structure.Described method
, can be according to shown in embodiment or accompanying drawing or the device in practice of modular structure, server or end product be when applying
Method or the execution of modular structure carry out order it is either parallel perform (such as the environment of parallel processor or multiple threads,
Even including distributed treatment, the implementation environment of server cluster).
Specific one embodiment is as shown in figure 1, a kind of method for determination oil well output lapse rate that this specification provides
One embodiment in, methods described can include：
S102, the creation data for obtaining oil well output depletion stage；
S104, according to the creation data of the oil well output depletion stage to exponential decrease type, harmonic decline type, double
Bent Decline type is fitted respectively by the decline exponent value at default value interval, obtains the finger that successively decreases at the default value interval
Fitting correlation coefficient corresponding to numerical value and lapse rate；
S106, fitting correlation coefficient corresponding to the decline exponent value at the default value interval is ranked up by size,
Obtain lapse rate corresponding to the maximum of the fitting correlation coefficient；
S108, lapse rate corresponding to the maximum of the fitting correlation coefficient is defined as successively decreasing for the depletion stage
Rate.
In the present embodiment, the creation data of oil well can be first obtained, then by analyzing the creation data of oil well, it is determined that oily
Well depletion stage, the creation data of depletion stage corresponding to acquisition.When it is implemented, can be according to the creation data of the oil well
Yield and production time relation curve are drawn, successively decreasing for oil well is determined by the analysis result of yield and production time relation curve
Stage, so as to obtain the creation data of corresponding depletion stage.
The creation data of described oil well can include yield, production time and water filling moment.Certainly, other embodiments
In, the creation data of the oil well can also include other data messages of oil well production.
The creation data of the oil well can include the creation data of individual well in certain embodiments, in other embodiments
The creation data in whole oil field can also be included.Day degree, the moon can be included by counting time dimension used in the creation data
Degree or year.For example, when the production time is day, yield data can take the daily output；When the production time is the moon, yield number
According to the daily output after monthly output or calendar number of days monthly can be taken average；When the production time is year, yield data can be with
Take the daily output of annual production or annual.
The oil well of waterflooding extraction oil well before waterflooding extraction is in the state of production decline, after water filling is imitated so that oil
Well yield starts to be incremented by, and after yield maximum is reached, oily well yield will successively decrease again.Therefore it is directed to waterflooding extraction oil well
The characteristics of, in the present embodiment, can be analyzed decline of a well divided stages are multiple state phases, be advantageous to it is more accurate really
Determine lapse rate, the Decline type information that waterflooding extraction oil well output successively decreases.In one embodiment that this specification provides, the oil
Well production depletion stage can include elastic depletion stage, water drive depletion stage and steady depletion stage.The elasticity is successively decreased rank
Section can include the rank that oil well output is persistently decremented to the first minimum value after water filling is imitated from first maximum at the initial stage of operation
Section；The water drive depletion stage can include oil well output from water filling imitated after the second maximum to be persistently decremented to second minimum
The stage of value, the second minimum value of the oil well output include the fitting a straight line of the water drive depletion stage production curve with it is steady
Yield corresponding to the joining of the fitting a straight line of depletion stage production curve；The steady depletion stage can include oil well output
The stage persistently successively decreased to production time extending direction from second minimum value.
In order that the scheme for obtaining the present embodiment becomes apparent from, the specific embodiment that this specification provides, such as Fig. 2 institutes
Show.Fig. 2 is the daily output and production time relation curve of oil well, wherein, QTIt is right for the daily output maximum at oil well production initial stage
The production moment answered is initial time；t0For water injection well water filling at the time of, QLTo be produced daily in elastic production process after water injection well water filling
First minimum value being decremented to is measured, is t at the time of corresponding1；QLTo QSThe daily output increase because water filling is imitated, Qs is water filling
The maximum that the daily output is continually incremented after being imitated, it is t at the time of corresponding2；The daily output reaches maximum after flushing is imitated
Start to successively decrease after Qs, the daily output is decremented to QPSuccessively decrease afterwards and tend to be steady, QPIt is t at the time of corresponding3.The depletion stage of oil well
Three state phases it is as follows：Elastic depletion stage is the daily output in elastic production process by QSIt is decremented to QLStage, water drive passs
Derogatory section be water filling imitated after production process in the daily output by QSIt is decremented to QPStage, steady depletion stage passs for water drive
The joining Q of the fitting a straight line of derogatory section of production curve and steady depletion stage fitting a straight linePStage afterwards.
In one embodiment of this specification, index can be passed according to the creation data of the oil well output depletion stage
Subtract type, harmonic decline type, hyperbolic decline type to be fitted respectively by the decline exponent value at default value interval, obtain institute
State fitting correlation coefficient and lapse rate corresponding to the decline exponent value at default value interval；Obtain the maximum of the coefficient correlation
Corresponding lapse rate；Lapse rate corresponding to the maximum of the coefficient correlation is defined as to the lapse rate of the depletion stage.
The lapse rate can include annual decline rate in certain embodiments, can also be passed in other embodiments including day
Lapse rate or monthly decline rate.For example, when time dimension used in statistics creation data is day, the lapse rate is successively decreased for day
Rate；When time dimension used in statistics creation data is the moon, the lapse rate is monthly decline rate；When statistics creation data institute
When the time dimension used is year, the lapse rate is annual decline rate.In the present embodiment, calculate, can unify for convenience
Day lapse rate and monthly decline rate are converted into annual decline rate, the relation of changing into can include：
The conversion relation of monthly decline rate and annual decline rate：The conversion of day lapse rate and annual decline rate is closed
System：Wherein, DYearRefer to annual decline rate, DMonthRefer to monthly decline rate, DDayIn a few days lapse rate.
In one or more embodiment of this specification, Decline type can be built according to Arps production declines formula
Discrimination formula, exponential decrease type, harmonic decline type, hyperbolic decline type are carried out according to the Decline type discrimination formula
Fitting.Arps production declines formula can include the finger that successively decreases of index, hyperbolic and mediation three types, wherein exponential decrease type
Arbitrary Digit between number is 0, the decline exponent of hyperbolic decline type is 0 to 1, the decline exponent of harmonic decline type is 1.Arps
Index, hyperbolic in production decline formula and the formula that successively decreases of three types of reconciling are respectively：
Exponential decrease type：
Hyperbolic decline type：
Exponential decrease type：
Wherein, qrFor the initil output of the depletion stage, q is the yield of any instant of the depletion stage, DrTo pass
Lapse rate, t are the production time, and n is decline exponent value.
Enter line translation to above-mentioned Arps production declines formula, the Decline type discrimination formula of acquisition is as follows：
Exponential decrease type：
Hyperbolic decline type：
Harmonic decline type：
Wherein, qrFor the initil output of the depletion stage, q is the yield of any instant of the depletion stage, DrTo pass
Lapse rate, t are the production time, and n is decline exponent value.
In one embodiment of this specification, separately the exponential decrease type in Decline type discrimination formula, hyperbolic it can pass
The left end for subtracting the formula that successively decreases of type and harmonic decline type is X, right-hand member Y, according to the creation data meter of the depletion stage
The Y and X as corresponding to the decline exponent value at default value interval is calculated, to Y corresponding to the decline exponent value at the default value interval
It is fitted with X, obtains fitting correlation coefficient and lapse rate corresponding to each decline exponent value.Then described preset is taken
Fitting correlation coefficient corresponding to the decline exponent value at value interval is ranked up by size, obtains the maximum of the fitting correlation coefficient
Lapse rate corresponding to value, by corresponding to the maximum of the fitting correlation coefficient, lapse rate be defined as passing for the depletion stage
Lapse rate.The above method provided by the present embodiment, the production decline rate of oil well can be more accurately determined, so as to improve oil
Well production production decline law is analyzed and the accuracy of prediction.
Further, in one embodiment that this specification provides, the maximum of the fitting correlation coefficient can also be obtained
Decline type, decline exponent value corresponding to value, by Decline type, decline exponent corresponding to the maximum of the fitting correlation coefficient
Value is defined as the Decline type of the depletion stage, decline exponent value.So as to accurately determine oil well output depletion stage
While lapse rate, the Decline type and decline exponent value of oil well output depletion stage are determined.Oil well output is further improved to pass
Subtract the accuracy of law-analysing and prediction.
In the specific embodiment that this specification provides, for a certain actual oil well, using the moon as statistics creation data
Used time dimension, Fig. 3 are the fitting result schematic diagram of exponential decrease type, and solid dot is the data point that X and Y is determined,
Solid line is fitting a straight line, and the monthly decline rate fitted is 0.0498, and corresponding annual decline rate is 44.9%, and fitting correlation coefficient is
0.3719.Fig. 4 is the fitting result schematic diagram of harmonic decline type, and the monthly decline rate fitted is 0.0747, and corresponding year passs
Lapse rate is 59.2%, fitting correlation coefficient 0.5682., can be by because n values are between 0~1 for hyperbolic decline type
Values of the described default value interval setting n between 0 to 1, such as default value can then obtain nine at intervals of 0.1
Individual n values：0.1st, 0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9, then nine groups of Y and X data can be calculated, certainly, if
Have higher requirement for precision, default value interval can include 0.05 or smaller, such as default value at intervals of
0.05, then it can obtain 19 n values：0.05、0.1、0.15、0.2、0.25、0.3、0.35、0.4、0.45、0.5、0.55、
0.6th, 0.65,0.7,0.75,0.8,0.85,0.9,0.95, the corresponding data that can calculate 19 groups of Y and X；It is default to take
The installation warrants actual conditions of value gap size are determined, and are not limited here.Fig. 5 is plan of the hyperbolic decline type when n is 0.5
Result schematic diagram is closed, the monthly decline rate fitted is 0.0715, and corresponding annual decline rate is 54.7%, and fitting correlation coefficient is
0.5568.If default value is intended Y the and X data of hyperbolic decline type corresponding to nine n values at intervals of 0.1 respectively
Close, obtain nine lapse rates and nine fitting correlation coefficients corresponding to above-mentioned nine n values.By above-mentioned calculating to index pass
Subtract nine fitting phases of the fitting correlation coefficient of type, the fitting correlation coefficient of harmonic decline type and hyperbolic decline type
Relation number is ranked up by size, obtains Decline type, decline exponent corresponding to the maximum in this 11 fitting correlation coefficients
Value and lapse rate, by Decline type, decline exponent value and lapse rate corresponding to the maximum in 11 fitting correlation coefficients
It is defined as Decline type, decline exponent value and the lapse rate of the depletion stage.
In another specific embodiment that this specification provides, the above method provided according to this specification embodiment divides
Above-mentioned elastic depletion stage, water drive depletion stage, the Decline type of steady depletion stage, decline exponent value, lapse rate are not determined.
For a certain actual oil well, as shown in fig. 6, yield and production time curve are drawn according to the creation data of oil well,
Determine oil well output depletion stage, the oil well output depletion stage includes elastic depletion stage, water drive depletion stage and steady
Depletion stage.The initil output of the elastic depletion stage of the actual oil well is 15t/d, and initial time is set at the time of corresponding, is tied
The beam moment be 25th month, at the end of yield be 6.2t/d.The initial time of water drive depletion stage is 47th month, initial production
Measure as 9.6t/d, finish time is 67th month, at the end of yield be 3.6t/d.The initial time of steady depletion stage is the 70th
Month, initil output is 3.6t/d, and finish time is 96th month.The above method difference provided according to this specification embodiment is true
Determine Decline type, decline exponent value and the lapse rate of above three depletion stage, it is determined that the elasticity of the actual oil well successively decrease rank
The annual decline rate of section is 44.9%, is exponential decrease type, and decline exponent n is 0；The annual decline rate of water drive depletion stage is
34.2%, it is hyperbolic decline type, decline exponent n is 0.8；The annual decline rate of steady depletion stage is 12.8%, is passed to reconcile
Subtract type, decline exponent n is 1.0.
Above-described embodiment that this specification provides, produced by determining the creation data in decline of a well stage, and for oil well
The creation data for measuring depletion stage presses default value interval to exponential decrease type, harmonic decline type, hyperbolic decline type
Decline exponent value is fitted respectively, is obtained fitting correlation coefficient corresponding to the decline exponent value at the default value interval and is passed
Lapse rate, lapse rate corresponding to the maximum of the fitting correlation coefficient is defined as to the lapse rate of the depletion stage.Utilize this
Specification embodiment scheme, the lapse rate of depletion stage can be accurately determined, it is pre- so as to improve oil well output production decline law
The accuracy of survey.And by analysing output and the relation curve of production time, quantitative stand oil well production depletion stage really, from
And the accuracy that the production decline rate for further increasing waterflooding extraction oil well determines.
In another embodiment of this specification methods described, it can also include：
S202, the degree of successively decreasing according to belonging to the lapse rate of the depletion stage determines the depletion stage.
In the present embodiment, the threshold value of division lapse rate size can be preset, is successively decreased according to threshold value division is multiple
Interval corresponding to rate, the interval according to belonging to lapse rate determines the degree of successively decreasing belonging to the depletion stage, described
Degree of successively decreasing carries out classifying and dividing previously according to the value of lapse rate.In one embodiment of this specification, the journey of successively decreasing
Degree can include rapid decrement, it is medium successively decrease and successively decrease at a slow speed, successively decrease rank according to determining the lapse rate of the depletion stage
Degree of successively decreasing belonging to section can include：When lapse rate is more than first threshold, the degree of successively decreasing belonging to the depletion stage is
Rapid decrement；When lapse rate is less than or equal to first threshold more than or equal to Second Threshold, the journey of successively decreasing belonging to the depletion stage
Spend and successively decrease to be medium；When lapse rate is less than first threshold, successively decrease degree belonging to the depletion stage to successively decrease at a slow speed；Its
In, the first threshold is more than Second Threshold.
The first threshold and the value size of Second Threshold can set other numerical value according to the situation of reality, here
Do not limit, it is preferred that when lapse rate is annual decline rate, the value of the first threshold can include 30%；Described second
The value of threshold value can include 10%.
In a kind of specific embodiment that this specification provides, for a certain actual oil shown in Fig. 6 in above-described embodiment
Well, if setting when lapse rate is annual decline rate, the first threshold value is 30%, and the value of Second Threshold is 10%.Then
The annual decline rate of elastic depletion stage is 44.9%, and more than first threshold, therefore the elastic depletion stage of the actual oil well is passed
It is rapid decrement to subtract degree；The annual decline rate of water drive depletion stage is 34.2%, more than first threshold, therefore the actual oil well
The degree of successively decreasing of water drive depletion stage is rapid decrement；The annual decline rate of steady depletion stage is 12.8%, more than or equal to second
Threshold value is less than or equal to first threshold, therefore the degree of successively decreasing of the steady depletion stage of the actual oil well is successively decreased to be medium, so as to fast
The basis of speed submits the degree of successively decreasing that rate determines depletion stage.
Above-described embodiment that this specification provides, according to belonging to the lapse rate of the depletion stage determines the depletion stage
Degree of successively decreasing, so as to the production decline rule of quantitative analysis oil well so that the analysis to production decline rule is apparent,
So as to improve the efficiency of Production Decline Analysis prediction.
In another embodiment of this specification methods described, it is described determine belonging to the depletion stage successively decrease degree it
Afterwards, in addition to：
S302, determine that tiring out yield and unit initial stage tires out the influence result that the aqueous rising value of yield successively decreases to oil well output.
In the present embodiment, because the lapse rate of elastic depletion stage is by development index such as oil well control reserve, rate of oil productions
Influence, and the initial stage tire out yield can reflect the information such as oil well control reserve, rate of oil production；Water drive depletion stage successively decreases
Rate is influenceed by development index such as rate of water cut increase, manual energy's recharge rate, rate of oil productions, and the unit tires out yield
Aqueous rising value can go out these information with combined reaction.Therefore, containing for yield can be tired out by tiring out yield and unit at determination initial stage
The influence result that appreciation waterborne is successively decreased to oil well output, to reflect influence result that development index successively decreases to oil well output.
In one or more embodiment of this specification, the First Year that brings in can be included by tiring out yield the initial stage
Interior oil well tires out yield, and oil well tires out the oil that yield can include bringing in start to start at 12 months in the operation First Year
Well tires out yield.The aqueous rising value that the unit tires out yield can include oil well often ten thousand tons of oily aqueous rising values of tired production, described
The calculating initial time that unit tires out yield is the second maximum Q that sustained production returns to after flushing is imitatedSIt is corresponding
Moment t2, i.e., from t2The direction calculating cumulative oil production extended to the production time, obtain unit and tire out aqueous rising corresponding to yield
Value.
In one embodiment that this specification provides, can by count the annual decline rate of oil well elasticity depletion stage with
Tire out yield data initial stage, draw relation curve, by the method for recurrence, determine to tire out the initial stage yield and the elasticity and successively decrease rank
First relation data of the lapse rate of section, and determine that tiring out yield the initial stage passs oil well elasticity according to first relation data
The influence result of degree of successively decreasing belonging to derogatory section；And determine that the aqueous rising value of the tired yield of the unit is passed with the water drive
Second relation data of derogatory section of lapse rate, and determine that containing for the tired yield of the unit is waterborne according to second relation data
The influence result appreciated to the degree of successively decreasing belonging to oil well water drive depletion stage.
In the specific embodiment that this specification provides, for certain involved by Fig. 6 in above-described embodiment
One actual oil well, the annual decline rate of oil well elasticity depletion stage of certain individual well in the actual oil well is counted with tiring out yield number initial stage
According to drafting relation curve, by the method for recurrence, the annual decline rate for obtaining elastic depletion stage tires out the line of yield data with initial stage
Sexual intercourse data, as shown in Figure 7.Analyze the linear relationship data to understand, be more than 0.7 ten thousand ton hours when initial stage tires out oil-producing, successively decrease in year
Rate is less than 10%, therefore successively decreases degree belonging to the elastic depletion stage to successively decrease at a slow speed.When initial stage tire out oil-producing between 0.5~
0.7 ten thousand ton hours, annual decline rate is between 10% and 30%, therefore the degree of successively decreasing belonging to the elastic depletion stage is passed to be medium
Subtract.It is less than 0.5 ten thousand ton hours when initial stage tires out oil-producing, annual decline rate is more than 30%, therefore successively decreasing belonging to the elastic depletion stage
Degree is rapid decrement.
In another specific embodiment that this specification provides, for a certain actual oil involved by above-mentioned Fig. 6
Well, count the aqueous rising value that the annual decline rate of the water drive depletion stage of certain individual well in the actual oil well tires out yield with the unit
Data, relation curve is drawn, by the method for recurrence, the annual decline rate and the unit for obtaining water drive depletion stage tire out yield
The linear relationship data of aqueous rising value, as shown in Figure 8.When the aqueous rising value that unit tires out yield is less than 15.7%, year passs
Lapse rate is less than 10%, therefore successively decreases degree belonging to the water drive depletion stage to successively decrease at a slow speed.When unit tires out the aqueous of yield
Rising value between 15.7~42.6% when, annual decline rate is between 10% and 30%, therefore belonging to the water drive depletion stage
Degree of successively decreasing is successively decreased to be medium.When aqueous rising value is more than 42.6%, annual decline rate is more than 30%, therefore the water drive is successively decreased
Degree of successively decreasing belonging to stage is rapid decrement.
In this specification above-described embodiment, it can be reflected by tiring out the aqueous rising value of yield and the tired yield of unit initial stage
The development index of oil well, and by tiring out yield at determination initial stage and unit tires out the shadow that the aqueous rising value of yield successively decreases to oil well output
Result is rung, to reflect influence result that development index successively decreases to oil well output, so that it is determined that the exploitation in oil well practical operation refers to
The influence to decline of a well is marked, further increases the accuracy of decline of a well law forecasting.
Each embodiment in this specification is described by the way of progressive, identical similar portion between each embodiment
Divide mutually referring to what each embodiment stressed is the difference with other embodiment.Specifically it is referred to
The description of foregoing relevant treatment related embodiment, does not do repeat one by one herein.
It is above-mentioned that this specification specific embodiment is described.Other embodiments are in the scope of the appended claims
It is interior.In some cases, the action recorded in detail in the claims or step can be come according to different from the order in embodiment
Perform and still can realize desired result.In addition, the process described in the accompanying drawings not necessarily require show it is specific suitable
Sequence or consecutive order could realize desired result.In some embodiments, multitasking and parallel processing be also can
With or be probably favourable.
A kind of method for determination oil well output lapse rate that this specification one or more embodiment provides, can be by obtaining
Take the creation data of oil well output depletion stage, and according to the creation data of the oil well output depletion stage to exponential decrease class
Type, harmonic decline type, hyperbolic decline type are fitted respectively by the decline exponent value at default value interval, are obtained described pre-
If fitting correlation coefficient and lapse rate corresponding to the decline exponent value at value interval, by the maximum pair of the fitting correlation coefficient
The lapse rate answered is defined as the lapse rate of the depletion stage.Using this specification embodiment scheme, can more it is accurate really
The lapse rate of stand oil well production, improve the accuracy of the analysis of oil well output production decline law and prediction.
Based on a kind of method of determination oil well output lapse rate described above, this specification one or more embodiment is also
A kind of device for determining oil well output lapse rate is provided.Described device can include the use of side described in this specification embodiment
The system of method, software (application), module, component, server etc. and the device for combining necessary implementation hardware.Based on same innovation
Conceive, the device in one or more embodiments that this specification embodiment provides is as described in the following examples.Due to device
The implementation solved the problems, such as is similar to method, therefore the implementation of the specific device of this specification embodiment may refer to foregoing side
The implementation of method, repeat part and repeat no more.Used below, term " unit " or " module " can realize predetermined function
The combination of software and/or hardware.Although device described by following examples is preferably realized with software, hardware, or
The realization of the combination of person's software and hardware is also what may and be contemplated.A kind of specifically, determination that Fig. 9, which is this specification, to be provided
The modular structure schematic diagram of the device embodiment of oil well output lapse rate, as shown in figure 9, described device can include：
Data acquisition module 802, it can be used for the creation data for obtaining oil well output depletion stage；
Data fitting module 804, it can be used for the creation data according to the oil well output depletion stage to exponential decrease
Type, harmonic decline type, hyperbolic decline type are fitted respectively by the decline exponent value at default value interval, described in acquisition
Fitting correlation coefficient and lapse rate corresponding to the decline exponent value at default value interval；
Lapse rate determining module 806, it can be used for being fitted phase corresponding to the decline exponent value at the default value interval
Relation number is ranked up by size, obtains lapse rate corresponding to the maximum of the fitting correlation coefficient, and the fitting is related
Lapse rate corresponding to the maximum of coefficient is defined as the lapse rate of the depletion stage.
Need what is illustrated, device described above can also include other embodiment party according to the description of embodiment of the method
Formula, concrete implementation mode are referred to the description of related method embodiment, not repeated one by one herein.
A kind of device for determination oil well output lapse rate that this specification one or more embodiment provides, can be by obtaining
Take the creation data of oil well output depletion stage, and according to the creation data of the oil well output depletion stage to exponential decrease class
Type, harmonic decline type, hyperbolic decline type are fitted respectively by the decline exponent value at default value interval, are obtained described pre-
If fitting correlation coefficient and lapse rate corresponding to the decline exponent value at value interval, by the maximum pair of the fitting correlation coefficient
The lapse rate answered is defined as the lapse rate of the depletion stage.Using this specification embodiment scheme, can more it is accurate really
The lapse rate of stand oil well production, improve the accuracy of the analysis of oil well output production decline law and prediction.
The method or apparatus described in above-described embodiment that this specification provides can realize that business is patrolled by computer program
Collect and record on a storage medium, described storage medium can be read and be performed with computer, realize this specification embodiment institute
The effect of description scheme.Therefore, this specification also provides a kind of device for determining oil well output lapse rate, including processor and use
In the memory of storage processor-executable instruction, the instruction is realized during the computing device to be comprised the following steps：
Obtain the creation data of oil well output depletion stage；
Exponential decrease type, harmonic decline type, hyperbolic are passed according to the creation data of the oil well output depletion stage
Subtract type to be fitted respectively by the decline exponent value at default value interval, obtain the decline exponent value at the default value interval
Corresponding fitting correlation coefficient and lapse rate；
Fitting correlation coefficient corresponding to the decline exponent value at the default value interval is ranked up by size, obtains institute
State lapse rate corresponding to the maximum of fitting correlation coefficient；
Lapse rate corresponding to the maximum of the fitting correlation coefficient is defined as to the lapse rate of the depletion stage.
Need what is illustrated, device described above can also include other embodiment party according to the description of embodiment of the method
Formula.Concrete implementation mode is referred to the description of related method embodiment, does not repeat one by one herein.
A kind of device of determination oil well output lapse rate described in above-described embodiment, can be successively decreased by obtaining oil well output
The creation data in stage, and according to the creation data of the oil well output depletion stage to exponential decrease type, harmonic decline class
Type, hyperbolic decline type are fitted respectively by the decline exponent value at default value interval, obtain the default value interval
Fitting correlation coefficient and lapse rate corresponding to decline exponent value, lapse rate corresponding to the maximum of the fitting correlation coefficient is true
It is set to the lapse rate of the depletion stage.Using this specification embodiment scheme, oil well output can be determined more accurately
Lapse rate, improve the accuracy of the analysis of oil well output production decline law and prediction.
The storage medium can include for storage information physical unit, typically by after information digitalization again with profit
The media of the modes such as electricity consumption, magnetic or optics are stored.The storage medium has and can included：Letter is stored using electric energy mode
The device of breath such as, various memory, such as RAM, ROM；Using magnetic energy mode storage information device such as, hard disk, floppy disk, magnetic
Band, core memory, magnetic bubble memory, USB flash disk；Using optical mode storage information device such as, CD or DVD.Certainly, there is it
The readable storage medium storing program for executing of his mode, such as quantum memory, graphene memory etc..
It should be noted that this specification device described above can also include according to the description of related method embodiment
Other embodiments, concrete implementation mode are referred to the description of embodiment of the method, not repeated one by one herein.This explanation
Each embodiment in book is described by the way of progressive, and identical similar part is mutually referring to i.e. between each embodiment
Can, what each embodiment stressed is the difference with other embodiment.It is situated between especially for hardware+program class, storage
For matter+program embodiment, because it is substantially similar to embodiment of the method, so description is fairly simple, related part referring to
The part explanation of embodiment of the method.
It is above-mentioned that this specification specific embodiment is described.Other embodiments are in the scope of the appended claims
It is interior.In some cases, the action recorded in detail in the claims or step can be come according to different from the order in embodiment
Perform and still can realize desired result.In addition, the process described in the accompanying drawings not necessarily require show it is specific suitable
Sequence or consecutive order could realize desired result.In some embodiments, multitasking and parallel processing be also can
With or be probably favourable.
System, device, module or the unit that above-described embodiment illustrates, it can specifically be realized by computer chip or entity,
Or realized by the product with certain function.One kind typically realizes that equipment is computer.Specifically, computer for example may be used
Think personal computer, laptop computer, vehicle-mounted human-computer interaction device, cell phone, camera phone, smart phone, individual
Digital assistants, media player, navigation equipment, electronic mail equipment, game console, tablet PC, wearable device or
The combination of any equipment in these equipment of person.
For convenience of description, it is divided into various modules during description apparatus above with function to describe respectively.Certainly, this is being implemented
The function of each module can be realized in same or multiple softwares and/or hardware during specification one or more, can also
The module for realizing same function is realized by the combination of multiple submodule or subelement etc..Device embodiment described above is only
It is only illustrative, for example, the division of the unit, only a kind of division of logic function, can have in addition when actually realizing
Dividing mode, such as multiple units or component can combine or be desirably integrated into another system, or some features can be with
Ignore, or do not perform.Another, shown or discussed mutual coupling or direct-coupling or communication connection can be logical
Some interfaces are crossed, the INDIRECT COUPLING or communication connection of device or unit, can be electrical, mechanical or other forms.
It is also known in the art that in addition to realizing controller in a manner of pure computer readable program code, it is complete
Entirely can by by method and step carry out programming in logic come controller with gate, switch, application specific integrated circuit, may be programmed
The form of logic controller and embedded microcontroller etc. realizes identical function.Therefore this controller is considered one kind
Hardware component, and what its inside was included is used to realize that the device of various functions can also to be considered as the structure in hardware component.Or
Person even, not only can be able to will be the software module of implementation method but also can be hardware for realizing that the device of various functions is considered as
Structure in part.
The present invention is the flow with reference to method according to embodiments of the present invention, equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that can be by every first-class in computer program instructions implementation process figure and/or block diagram
Journey and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided
The processors of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for real
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which produces, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, so as in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
In a typical configuration, computing device includes one or more processors (CPU), input/output interface, net
Network interface and internal memory.
It should also be noted that, term " comprising ", "comprising" or its any other variant are intended to nonexcludability
Comprising so that process, method, commodity or equipment including a series of elements not only include those key elements, but also wrapping
Include the other element being not expressly set out, or also include for this process, method, commodity or equipment intrinsic want
Element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that wanted including described
Other identical element also be present in the process of element, method or equipment.
It will be understood by those skilled in the art that this specification one or more embodiment can be provided as method, system or calculating
Machine program product.Therefore, this specification one or more embodiment can use complete hardware embodiment, complete software embodiment or
With reference to the form of the embodiment in terms of software and hardware.Moreover, this specification one or more embodiment can use at one or
It is multiple wherein include computer usable program code computer-usable storage medium (include but is not limited to magnetic disk storage,
CD-ROM, optical memory etc.) on the form of computer program product implemented.
This specification one or more embodiment can computer executable instructions it is general on
Described in hereafter, such as program module.Usually, program module includes performing particular task or realizes particular abstract data type
Routine, program, object, component, data structure etc..This this specification one can also be put into practice in a distributed computing environment
Or multiple embodiments, in these DCEs, by being held by communication network and connected remote processing devices
Row task.In a distributed computing environment, program module can be located at the local and remote computer including storage device
In storage medium.
Each embodiment in this specification is described by the way of progressive, identical similar portion between each embodiment
Divide mutually referring to what each embodiment stressed is the difference with other embodiment.It is real especially for system
For applying example, because it is substantially similar to embodiment of the method, so description is fairly simple, related part is referring to embodiment of the method
Part explanation.In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ",
The description of " specific example " or " some examples " etc. means to combine specific features, structure, material that the embodiment or example describe
Or feature is contained at least one embodiment or example of this specification.In this manual, to the signal of above-mentioned term
Property statement be necessarily directed to identical embodiment or example.Moreover, specific features, structure, material or the feature of description
It can be combined in an appropriate manner in any one or more embodiments or example.In addition, in the case of not conflicting, this
The technical staff in field can be by the different embodiments or example described in this specification and the spy of different embodiments or example
Sign is combined and combined.
Embodiments herein is the foregoing is only, is not limited to the application.For those skilled in the art
For, the application can have various modifications and variations.All any modifications made within spirit herein and principle, it is equal
Replace, improve etc., it should be included within the scope of claims hereof.
Claims (11)
- A kind of 1. method for determining oil well output lapse rate, it is characterised in that including：Obtain the creation data of oil well output depletion stage；According to the creation data of the oil well output depletion stage to exponential decrease type, harmonic decline type, hyperbolic decline class Type is fitted respectively by the decline exponent value at default value interval, and the decline exponent value for obtaining the default value interval is corresponding Fitting correlation coefficient and lapse rate；Fitting correlation coefficient corresponding to the decline exponent value at the default value interval is ranked up by size, obtains the plan Close lapse rate corresponding to the maximum of coefficient correlation；Lapse rate corresponding to the maximum of the fitting correlation coefficient is defined as to the lapse rate of the depletion stage.
- 2. the method according to claim 1 for determining oil well output lapse rate, it is characterised in that described to be taken to described preset Fitting correlation coefficient corresponding to the decline exponent value at value interval is ranked up by size, obtains the maximum of the fitting correlation coefficient After lapse rate corresponding to value, in addition to：Decline type corresponding to the maximum of the fitting correlation coefficient, decline exponent value are obtained, by the fitting correlation coefficient Maximum corresponding to Decline type, decline exponent value be defined as the Decline type of the depletion stage, decline exponent value.
- 3. the method according to claim 1 for determining oil well output lapse rate, it is characterised in that described according to the oil well The creation data in production decline stage presses default value interval to exponential decrease type, harmonic decline type, hyperbolic decline type Decline exponent value be fitted respectively, including：Based on Decline type discrimination formula, exponential decrease type, harmonic decline type, hyperbolic decline type are pressed presetting value Every decline exponent value be fitted respectively；Decline type discrimination formula corresponding to the exponential decrease type includes：N=0；Decline type discrimination formula corresponding to the hyperbolic decline type includes：0 ＜ n ＜ 1；Decline type discrimination formula corresponding to the harmonic decline type includes：N=1；Wherein, qrFor the initil output of the depletion stage, q is the yield of any instant of the depletion stage, DrTo successively decrease Rate, t are the production time, and n is decline exponent value.
- 4. the method according to claim 3 for determining oil well output lapse rate, it is characterised in that described according to the oil well The creation data in production decline stage presses default value interval to exponential decrease type, harmonic decline type, hyperbolic decline type Decline exponent value be fitted respectively, obtain fitting correlation coefficient corresponding to the decline exponent value at the default value interval and Lapse rate, including：The left end of the Decline type discrimination formula of another the exponential decrease type, hyperbolic decline type and harmonic decline type is Y, Right-hand member is X, Y and X corresponding to the decline exponent value for calculating the default value interval according to the creation data of the depletion stage；Y and X corresponding to the decline exponent value at the default value interval is fitted, obtains passing for the default value interval Subtract fitting correlation coefficient corresponding to exponential quantity and lapse rate.
- 5. the method for stand oil well production lapse rate really according to claim any one of 1-4, it is characterised in that the acquisition The creation data of oil well output depletion stage, including：Oil well output and production time relation curve are drawn according to the creation data of oil well；The creation data of the oil well output depletion stage is determined according to the oil well output and production time relation curve.
- 6. the method according to claim 5 for determining oil well output lapse rate, it is characterised in that the oil well output successively decreases Stage includes elastic depletion stage, water drive depletion stage and steady depletion stage；The elastic depletion stage includes oil well output and is persistently decremented to after water filling imitated from first maximum at the initial stage of operation The stage of first minimum value；The water drive depletion stage include oil well output from water filling imitated after the second maximum be persistently decremented to the second minimum value Stage, the second minimum value of the oil well output includes the fitting a straight line of the water drive depletion stage production curve with steadily passing Yield corresponding to the joining of the fitting a straight line of derogatory section of production curve；The steady depletion stage includes what oil well output persistently successively decreased from second minimum value to production time extending direction Stage.
- 7. the method according to claim 6 for determining oil well output lapse rate, in addition to：Degree of successively decreasing according to belonging to the lapse rate of the depletion stage determines the depletion stage, the degree of successively decreasing include fast Quick depletion, medium successively decrease and successively decrease at a slow speed；The degree of successively decreasing according to belonging to the lapse rate determines the depletion stage, including：When lapse rate is more than first threshold, degree of successively decreasing is rapid decrement；When lapse rate is less than or equal to first threshold more than or equal to Second Threshold, degree of successively decreasing is successively decreased to be medium；When lapse rate is less than first threshold, degree of successively decreasing is to successively decrease at a slow speed；The first threshold is more than Second Threshold.
- 8. the method according to claim 7 for determining oil well output lapse rate, it is characterised in that successively decrease described in the determination After degree of successively decreasing belonging to stage, in addition to：Production decline overall target is calculated according to the creation data of oil well, the overall target includes tired yield at initial stage and unit is tired out The aqueous rising value of yield；Determine that tire out yield the initial stage tires out with the first relation data of the lapse rate of the elastic depletion stage and the unit The aqueous rising value of yield and the second relation data of the lapse rate of the water drive depletion stage.
- 9. the method according to claim 8 for determining oil well output lapse rate, it is characterised in that described to determine described first After relation data and second relation data, in addition to：Determine that the oil well at initial stage tires out yield to the journey of successively decreasing belonging to the elastic depletion stage using first relation data The influence result of degree；Determine that the unit tires out the aqueous rising value of yield to belonging to the water drive depletion stage using second relation data Degree of successively decreasing influence result.
- A kind of 10. device for determining oil well output lapse rate, it is characterised in that including：Data acquisition module, for obtaining the creation data of oil well output depletion stage；Data fitting module, exponential decrease type, mediation are passed for the creation data according to the oil well output depletion stage Subtract type, hyperbolic decline type is fitted respectively by the decline exponent value at default value interval, obtain between the default value Every decline exponent value corresponding to fitting correlation coefficient and lapse rate；Lapse rate determining module, for fitting correlation coefficient corresponding to the decline exponent value to the default value interval by size It is ranked up, obtains lapse rate corresponding to the maximum of the fitting correlation coefficient, by the maximum of the fitting correlation coefficient Corresponding lapse rate is defined as the lapse rate of the depletion stage.
- 11. a kind of device for determining oil well output lapse rate, it is characterised in that can be held including processor and for storing processor The memory of row instruction, the instruction is realized during the computing device to be comprised the following steps：Obtain the creation data of oil well output depletion stage；According to the creation data of the oil well output depletion stage to exponential decrease type, harmonic decline type, hyperbolic decline class Type is fitted respectively by the decline exponent value at default value interval, and the decline exponent value for obtaining the default value interval is corresponding Fitting correlation coefficient and lapse rate；Fitting correlation coefficient corresponding to the decline exponent value at the default value interval is ranked up by size, obtains the plan Close lapse rate corresponding to the maximum of coefficient correlation；Lapse rate corresponding to the maximum of the fitting correlation coefficient is defined as to the lapse rate of the depletion stage.
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| CN109784705A (en) * | 2019-01-02 | 2019-05-21 | 中国石油天然气股份有限公司 | Method, device and storage medium for predicting oil production |
| CN110206530A (en) * | 2019-04-26 | 2019-09-06 | 中国石油集团西部钻探工程有限公司 | Data processing metering method and system in oil test operation |
| CN111861070B (en) * | 2019-04-30 | 2024-03-29 | 中国石油天然气股份有限公司 | Method and system for determining economically recoverable reserves of crude oil in an oil well using initial monthly yields |
| CN111861070A (en) * | 2019-04-30 | 2020-10-30 | 中国石油天然气股份有限公司 | Method and system for determining economic recoverable reserves of crude oil from an oil well using initial monthly yields |
| CN111861069A (en) * | 2019-04-30 | 2020-10-30 | 中国石油天然气股份有限公司 | Method and system for determining recoverable reserve of straight line descending oil well crude oil technology |
| CN111861069B (en) * | 2019-04-30 | 2024-03-05 | 中国石油天然气股份有限公司 | Method and system for determining recoverable reserves of crude oil technology of linear decreasing oil well |
| CN110610288A (en) * | 2019-08-01 | 2019-12-24 | 裴雪皓 | Intelligent system analysis method for oil and gas well production data |
| CN110878690B (en) * | 2019-11-27 | 2022-05-24 | 苏州冠德能源科技有限公司 | Method for determining shale gas well production decreasing curve based on carbon isotope evolution |
| CN110878690A (en) * | 2019-11-27 | 2020-03-13 | 苏州冠德能源科技有限公司 | Method for determining shale gas well production decreasing curve based on carbon isotope evolution |
| CN113033859A (en) * | 2019-12-24 | 2021-06-25 | 中国石油天然气股份有限公司 | Method and device for predicting cumulative yield of crude oil in straight descending period |
| CN113033859B (en) * | 2019-12-24 | 2024-08-02 | 中国石油天然气股份有限公司 | Method and device for predicting accumulated crude oil yield in linear decreasing period |
| CN113266322A (en) * | 2020-02-17 | 2021-08-17 | 中国石油天然气股份有限公司 | Water-drive reservoir decreasing rate prediction method and device |
| CN112836860B (en) * | 2021-01-12 | 2022-08-02 | 中国石油大学(华东) | Method and system for determining dynamic yield of fractured well in whole period of yield decreasing stage |
| CN112836860A (en) * | 2021-01-12 | 2021-05-25 | 中国石油大学(华东) | Method and system for determining dynamic yield of fractured well in whole period of yield decreasing stage |
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Application publication date: 20180109 |