CN106014365B - A method of prediction waterflooding development Production Decline Prediction of Oilfield rate - Google Patents
A method of prediction waterflooding development Production Decline Prediction of Oilfield rate Download PDFInfo
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- CN106014365B CN106014365B CN201610429923.8A CN201610429923A CN106014365B CN 106014365 B CN106014365 B CN 106014365B CN 201610429923 A CN201610429923 A CN 201610429923A CN 106014365 B CN106014365 B CN 106014365B
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- oil
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- rate
- relative permeability
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
Abstract
The invention belongs to oil development technical field, disclose the present invention provides it is a kind of prediction waterflooding development Production Decline Prediction of Oilfield rate method the parsing relationship of production decline rate and recovery percent of reserves in production process is described using oil-water relative permeability curve.The present invention provides a kind of high-precision, the prediction techniques of high reliability.
Description
Technical field
The present invention relates to oil development technical field, more particularly to a kind of side of prediction waterflooding development Production Decline Prediction of Oilfield rate
Method.
Background technology
It scientificlly and effectively predicts Production Decline Prediction of Oilfield rate, is the important composition portion of oil field development and the prediction of Adjusted Option index
Point, there is important directive significance for plan implementation and Facilities serialized.
In previous development plan establishment index prediction, there are mainly three types of methods for the selection of production decline rate：1. pilot production
Evaluation assessment calculates the production decline rate of different phase that is, according to the producing well production material that early stage goes into operation；2. analogy empirical method,
According to the adjacent or similar oil field condition of production, and practical experience is combined, chooses different phase lapse rate value；3. Method for Numerical,
By establishing geological model of oil accumulation, using method for numerical simulation, calculates individual well and oil field produces lapse rate.It is necessary due to lacking
Theoretical foundation is supported, larger error is usually generated, so as to cause incorrect decision.
Invention content
The present invention provides a kind of method of prediction waterflooding development Production Decline Prediction of Oilfield rate, solves production decline in the prior art
Rate prediction lacks theory support, leads to precision and the low technical problem of reliability.
In order to solve the above technical problems, the present invention provides a kind of method of prediction waterflooding development Production Decline Prediction of Oilfield rate,
Using oil-water relative permeability curve, the parsing relationship of production decline rate and recovery percent of reserves in production process is described；
Include the following steps：
By taking cylindric rock sample to carry out rock core displacement test oil field natural core, experimental data is mutually oozed in acquisition, is obtained
Water saturation Sw, oil relative permeability Kro, water phase relative permeability Krw, irreducible water saturation Swi and residual oil saturation
Spend Sor；
Establish oil relative permeability curve：
Establish dimensionless oil production amount Qro and recovery percent of reserves R relation functions：
Production decline rate D is related to the derivative of time to dimensionless oil production amount Qro, production decline rate and recovery percent of reserves relationship
Formula：
Wherein, initil output Qoi, oil in place N,It can be substituted by mutually oozing experimental data for initial rate of oil production, α and n
Oil-water relative permeability curve obtains；
The environmental factors such as the fuel-displaced thickness in oil field, supply oil radius, viscosity of crude, producing pressure differential do not change, then, and oil
Phase relative permeability Kro is equivalent to dimensionless oil production amount Qro.
Further, during carrying out rock core flood pot test, injection-production method is that one end is noted, the other end is adopted, experiment control
Condition is to determine liquid injection, level pressure output.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages：
The method provided in the embodiment of the present application uses oil-water relative permeability curve, describes yield in production process and passs
The parsing relationship of lapse rate and recovery percent of reserves can really reflect oil production variation relation.The present invention passes through to oil field natural core
It takes cylindric rock sample to carry out the data of rock core flood pot test, using the processing of effective mathematical regression and necessary mathematic(al) manipulation, obtains
Production decline rate change curve in reservoir performance analysis has been arrived, recovery percent of reserves and the relationship of production decline rate are intuitively reflected,
Relatively reliable reference frame is provided for oilfield development program formulation and lower step measure and Adjusted Option establishment, it can also be with this
To analyze, compare the relationship of oil reservoir produce reality parameter and theoretical value, evaluating oilfield development effectiveness.
Description of the drawings
Fig. 1 is oil-water relative permeability curve datagram provided in an embodiment of the present invention；
Fig. 2 is provided in an embodiment of the present invention using power empirical formula method calculating relevant parameter matched curve figure；
Fig. 3 is production decline rate change curve provided in an embodiment of the present invention.
Specific implementation mode
The embodiment of the present application solves the prior art by providing a kind of method of prediction waterflooding development Production Decline Prediction of Oilfield rate
The prediction of middle production decline rate lacks theory support, leads to precision and the low technical problem of reliability；It is reliable promotion prediction has been reached
The technique effect of property and precision.
In order to solve the above technical problems, the general thought that the embodiment of the present application provides technical solution is as follows：
A method of prediction waterflooding development Production Decline Prediction of Oilfield rate describes life using oil-water relative permeability curve
The parsing relationship of production decline rate and recovery percent of reserves during production；
Include the following steps：
By taking cylindric rock sample to carry out rock core displacement test oil field natural core, experimental data is mutually oozed in acquisition, is obtained
Water saturation Sw, oil relative permeability Kro, water phase relative permeability Krw, irreducible water saturation Swi and residual oil saturation
Spend Sor；
Establish oil relative permeability curve：
Establish dimensionless oil production amount Qro and recovery percent of reserves R relation functions：
Production decline rate D is related to the derivative of time to dimensionless oil production amount Qro, production decline rate and recovery percent of reserves relationship
Formula：
Wherein, initil output Qoi, oil in place N,It can be substituted by mutually oozing experimental data for initial rate of oil production, α and n
Oil-water relative permeability curve obtains；
The environmental factors such as oil field, fuel-displaced thickness, supply oil radius, viscosity of crude, producing pressure differential do not change, then,
Oil relative permeability Kro is equivalent to dimensionless oil production amount Qro.
Through the above as can be seen that describing Production Decline Prediction of Oilfield rate with oil-water relative permeability experimental data, come pre-
Effect of reservoir development and Exploitation degree are surveyed, has accurate theory support, greatly promotes reliability.
In order to better understand the above technical scheme, in conjunction with appended figures and specific embodiments to upper
It states technical solution to be described in detail, it should be understood that the specific features in the embodiment of the present invention and embodiment are to the application skill
The detailed description of art scheme, rather than to the restriction of technical scheme, in the absence of conflict, the embodiment of the present application
And the technical characteristic in embodiment can be combined with each other.
Referring to Fig. 1, a kind of method of prediction waterflooding development Production Decline Prediction of Oilfield rate provided in an embodiment of the present invention, including with
Lower step：
Carry out rock core displacement test, experimental data is mutually oozed in acquisition.
To certain oil field, natural core takes cylindric rock sample to carry out rock core flood pot test.In experimentation, the note of selection is adopted
Mode is that one end is noted, the other end is adopted, and experiment control condition is to determine liquid injection, level pressure output；
Referring to Fig. 1, a series of water saturation Sw, oil relative permeability Kro, water phase relative permeability Krw are obtained, and
Obtain irreducible water saturation Swi and residual oil saturation Sor；Oil-water relative permeability curve.
Using least square method calculating target function parameter value.
Referring to Fig. 2, it is based on power method empirical equation, it, can be with according to Least Square in Processing oil-water relative permeability data
Find out under log-log coordinate system, straight line has high related coefficient, calculates corresponding parameter value accordingly.
Based on power method empirical equation, α is acquired under log-log coordinate system according to relational expression (1) using least square method
With n values
It is assumed that thinking that the environmental factors such as the fuel-displaced thickness in oil field, supply oil radius, viscosity of crude, producing pressure differential do not become
Change, then, oil relative permeability Kro is equivalent to dimensionless oil production amount Qro, i.e.,：
Since water saturation Sw and recovery percent of reserves R available relationships formula (3) are indicated：
Sw=Swi+ (1-Swi) R (3)
Relational expression (3) is substituted into relational expression (2) formula, obtains the dimensionless oil production of oil-water relative permeability curve data reflection
Amount and recovery percent of reserves relational expression (4)：
If enabling：
Meanwhile the derivative of (4) formula equal sign both ends while seeking time, it obtains：
Due to：
(7) formula is substituted into (6) formula, arranges, obtains：
Since production decline rate is defined as：
And initial rate of oil production is defined as：
So：
D=α β nvi·(1-βR)n-1 (11)
I.e.：
As given initial rate of oil production vi or initil output Qoi and oil in place N.
Referring to Fig. 3, the production decline rate generated and recovery percent of reserves relational expression are derived more using the method described in the present embodiment
The variation of the different mining phase production decline rates of the scientific and effective reflection of energy, thus, it is possible to refer to for analysis, comparison oil reservoir produce reality
The relationship of parameter and theoretical value is marked, development effectiveness is evaluated, is compiled for oilfield development program formulation and lower step measure and Adjusted Option
System provides relatively reliable reference guide foundation.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages：
The method provided in the embodiment of the present application uses oil-water relative permeability curve, describes yield in production process and passs
The parsing relationship of lapse rate and recovery percent of reserves can really reflect oil production variation relation.The present invention passes through to oil field natural core
It takes cylindric rock sample to carry out the data of rock core flood pot test, using the processing of effective mathematical regression and necessary mathematic(al) manipulation, obtains
Production decline rate change curve in reservoir performance analysis has been arrived, recovery percent of reserves and the relationship of production decline rate are intuitively reflected,
Relatively reliable reference frame is provided for oilfield development program formulation and lower step measure and Adjusted Option establishment, it can also be with this
To analyze, compare the relationship of oil reservoir produce reality parameter and theoretical value, evaluating oilfield development effectiveness.
It should be noted last that the above specific implementation mode is merely illustrative of the technical solution of the present invention and unrestricted,
Although being described the invention in detail with reference to example, it will be understood by those of ordinary skill in the art that, it can be to the present invention
Technical solution be modified or replaced equivalently, without departing from the spirit of the technical scheme of the invention and range, should all cover
In the scope of the claims of the present invention.
Claims (2)
1. a kind of method of prediction waterflooding development Production Decline Prediction of Oilfield rate, it is characterised in that：Using oil-water relative permeability curve,
Describe the parsing relationship of production decline rate and recovery percent of reserves in production process；
Include the following steps：
By taking cylindric rock sample to carry out rock core displacement test oil field natural core, experimental data is mutually oozed in acquisition, is obtained aqueous
Saturation degree Sw, oil relative permeability Kro, water phase relative permeability Krw, irreducible water saturation Swi and residual oil saturation
Sor；
Establish oil relative permeability curve：
Establish dimensionless oil production amount Qro and recovery percent of reserves R relation functions：
Production decline rate D is related to the derivative of time to dimensionless oil production amount Qro, production decline rate and recovery percent of reserves relational expression：
Wherein, initil output Qoi, oil in place N,Grease can be substituted into for initial rate of oil production, α and n by mutually oozing experimental data
Permeability saturation curve obtains；
Totally four environmental factors do not change for the fuel-displaced thickness in oil field, supply oil radius, viscosity of crude, producing pressure differential, then, and oil
Phase relative permeability Kro is equivalent to dimensionless oil production amount Qro.
2. the method for prediction waterflooding development Production Decline Prediction of Oilfield rate as described in claim 1, it is characterised in that：
During carrying out rock core flood pot test, injection-production method is that one end is noted, the other end is adopted, and experiment control condition is to determine liquid note
Enter, level pressure output.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109409559B (en) * | 2017-08-17 | 2022-03-01 | 中国石油天然气股份有限公司 | Method and device for determining oilfield output reduction rate |
| CN110321575B (en) * | 2018-03-29 | 2021-09-14 | 中国石油化工股份有限公司 | Condensate gas reservoir dynamic capacity prediction method |
| 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 |
| CN114167030A (en) * | 2020-09-10 | 2022-03-11 | 中国石油天然气股份有限公司 | Method, device and equipment for determining water content of argillaceous sandstone reservoir |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2064574C1 (en) * | 1994-04-26 | 1996-07-27 | Внедренческий научно-исследовательский инженерный центр "Нефтегазтехнология" | Method for improving inflow of oil of critical zone treatment |
| CN102720485A (en) * | 2012-07-20 | 2012-10-10 | 中国石油天然气股份有限公司 | Prediction method of water cut increasing rate of water field with medium-high water content |
| CN103573234A (en) * | 2012-08-06 | 2014-02-12 | 中国石油化工股份有限公司 | Method for determining complete oil and water relative permeability curve |
| CN103912248A (en) * | 2014-03-20 | 2014-07-09 | 中国石油天然气股份有限公司 | Method for predicting water contents of water-drive oilfields |
| CN104481502A (en) * | 2014-11-13 | 2015-04-01 | 克拉玛依红有软件有限责任公司 | Method for using oil reservoir structure descending method to forecast crude output |
-
2016
- 2016-06-16 CN CN201610429923.8A patent/CN106014365B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2064574C1 (en) * | 1994-04-26 | 1996-07-27 | Внедренческий научно-исследовательский инженерный центр "Нефтегазтехнология" | Method for improving inflow of oil of critical zone treatment |
| CN102720485A (en) * | 2012-07-20 | 2012-10-10 | 中国石油天然气股份有限公司 | Prediction method of water cut increasing rate of water field with medium-high water content |
| CN103573234A (en) * | 2012-08-06 | 2014-02-12 | 中国石油化工股份有限公司 | Method for determining complete oil and water relative permeability curve |
| CN103912248A (en) * | 2014-03-20 | 2014-07-09 | 中国石油天然气股份有限公司 | Method for predicting water contents of water-drive oilfields |
| CN104481502A (en) * | 2014-11-13 | 2015-04-01 | 克拉玛依红有软件有限责任公司 | Method for using oil reservoir structure descending method to forecast crude output |
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