CN110378010A - A kind of Remaining Oil Distribution quantitative analysis method - Google Patents
A kind of Remaining Oil Distribution quantitative analysis method Download PDFInfo
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- CN110378010A CN110378010A CN201910636559.6A CN201910636559A CN110378010A CN 110378010 A CN110378010 A CN 110378010A CN 201910636559 A CN201910636559 A CN 201910636559A CN 110378010 A CN110378010 A CN 110378010A
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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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
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- G06F30/20—Design optimisation, verification or simulation
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Abstract
The invention discloses a kind of Remaining Oil Distribution quantitative analysis methods, comprising the following steps: the first step, the foundation of grid system utilize local mesh reflnement technical modelling well and man-made fracture；Second step, porosity, original contain the basic parameter inputs such as saturation degree, the determination of Living space, the selection of permeability saturation curve at permeability；Third step carries out sensibility quantitative analysis to parameter, and the method logarithmic mode scheme being related to orthogonal test carries out preferred design；4th step, foundation of the oil field Production development data as history matching carry out Integrated Checkout to the model of foundation.Remaining Oil Distribution quantitative analysis method of the invention, introduce Orthogonal Experiment and Design, determine the factor combination and quantity of digital-to-analogue scheme, pass through history matching, more accurately react the regularity of distribution of subterranean oil, gas and water, a large amount of human and material resources and time are saved, has the characteristics that strong applicability, is suitble to promote and apply.
Description
Technical field
The invention belongs to oil field development technical fields, and in particular to a kind of Remaining Oil Distribution quantitative analysis method.
Background technique
Remaining oil refers to the petroleum not yet produced in the oil reservoir for having put into exploitation, oil reservoir or oil field.It is main in development late stage
Task seeks to be refined using remaining oil saturation as main contents, the oil reservoir of quantification, mobilism and predictionization is retouched
It states.
China is that the highest country of waterflooding oil field ratio, most oilfields all come into mid-later development phase in the world
High water cut recovers the oil the stage, and China's oil field geologic situation is complicated, and oil property difference is big, and reservoir heterogeneity is serious, water filling
Still there is 60%~70% oil not produce under exploitation after, become remaining oil.At present, degree of prospecting is high, and incremental reserves are few, and
Hyposmosis and heavy oil reserves proportion are big in incremental reserves, meanwhile, with the development of national economy, to oil and natural gas
Demand increases year by year, and disparities between supply and demand become increasingly conspicuous.Therefore, reinforce remaining oil distribution research, have to raising recovery ratio important
Realistic meaning.Many main force oil fields of China's waterflooding extraction have entered middle and high Water-cut Period.One side incremental reserves are increasingly difficult,
Degree of prospecting is high, and new discovery field scale is totally in the trend that becomes smaller, and hyposmosis and heavy oil reserves in added reserves
Proportion increases year by year, reserves quality variation, increases newly and the remaining reserves property employed is poor;On the other hand, China is infused
Water develop oil fields " three high two is low " development contradiction it is prominent, i.e., composite water cut is high, recovery percent of reserves is high, rate of oil production is high, Chu Cai
Than low, recovery ratio is low, there are also bulk petroleums to produce.The low severe situation of this recovery percent high recovery rate opens petroleum
Requirements at the higher level are researched and proposed in hair field.
China's oil field geologic situation is complicated, and oil property difference is big, and water drive oil process is uneven, has arrived exploration and development
Later period, especially in the higher old filed of those degrees of prospecting, after primary, secondary oil recovery, be only capable of extraction underground it is total
30% or so of reserves, it means that having 60%~70% residual petroleum to remain on underground becomes remaining oil, these
The residual petroleum reserves for remaining in underground are a huge potentiality for increasing recoverable reserves and improving recovery ratio.Estimation, such as
Fruit in the world all oil fields recovery ratio improve 1%, be equivalent to increase by 2 to the 3 years petroleum consumptions in the whole world.Therefore,
Reinforcing Study on residual oil distribution, improving oil recovery is always oil field development geologist and reservoir engineer's research
Theme.China oil field is mostly continental deposit multiple zone reservoir, and permeability variation is big in interlayer, layer and in plane, and China
Nearly 90% oil field is all made of waterflooding extraction mode, and since heterogeneity is serious, each layer water absorption difference is big, injects water often edge
High permeability zone promotes, and promotes water uneven, causes water drive swept volume small, inject water too early to
Oil well is advanced by leaps and bounds, and oil and water zonation is indenting, and remaining oil distribution is not only scattered but also has opposite enrichment positions.Therefore, in development late stage
Our main task is sought to using remaining oil saturation as main contents, is refined, quantification, mobilism and prediction
The reservoir description of change.Meanwhile focus is increasingly turned between well and in the remaining oil distribution research of entire oil reservoir.
Summary of the invention
The present invention provides a kind of Remaining Oil Distribution quantitative analysis method.
Its technical solution are as follows:
A kind of Remaining Oil Distribution quantitative analysis method, comprising the following steps:
The first step, the foundation of grid system utilize local mesh reflnement technical modelling well and man-made fracture；
Second step, porosity, permeability, it is original contain the basic parameter inputs such as saturation degree, the determination of Living space is opposite to permeate
The selection of rate curve；
Third step carries out sensibility quantitative analysis to parameter, is preferably set with the method logarithmic mode scheme that orthogonal test is related to
Meter；
4th step, foundation of the oil field Production development data as history matching carry out Integrated Checkout to the model of foundation.
Further, basic parameter described in step 2 further include: the oil displacement efficiency of oil reservoir, the water out behavior of oil reservoir and residue
Oil is in layer and position in oil reservoir of the distribution of interlayer, well, petrophysical data.
Further, in step 2, further include connected applications intake profile data, production profile data, carbon/oxygen log,
Boron neutron lifetime carries out Quantitative Study to remaining oil.
Further, in third step, with the factor position grade of calculated result for ordinate, being averaged for the sum of result is led to position grade
Value is abscissa, makees the number tendency chart of position grade；Calculate the quadratic sum and all tests of result caused by the position grade of each factor
As a result the difference of the average value of quadratic sum, logarithmic mode calculated result carry out multiple regression.
Beneficial effects of the present invention:
Remaining Oil Distribution quantitative analysis method of the invention, introduces Orthogonal Experiment and Design, determines the factor of digital-to-analogue scheme
Combination and quantity more accurately react the regularity of distribution of subterranean oil, gas and water by history matching, save a large amount of manpower,
Material resources and time, have the characteristics that strong applicability, is suitble to promote and apply.
Detailed description of the invention
Fig. 1 is Remaining Oil Distribution quantitative analysis method flow chart.
Specific embodiment
Present invention will be explained in further detail with specific embodiment with reference to the accompanying drawing.
Referring to Fig.1, a kind of Remaining Oil Distribution quantitative analysis method, comprising the following steps:
The first step, the foundation of grid system utilize local mesh reflnement technical modelling well and man-made fracture；
Second step, porosity, permeability, it is original contain the basic parameter inputs such as saturation degree, the determination of Living space is opposite to permeate
The selection of rate curve；
Third step carries out sensibility quantitative analysis to parameter, is preferably set with the method logarithmic mode scheme that orthogonal test is related to
Meter；
4th step, foundation of the oil field Production development data as history matching carry out Integrated Checkout to the model of foundation.
Basic parameter described in step 2 further include: the oil displacement efficiency of oil reservoir, the water out behavior of oil reservoir and remaining oil are in layer
Position of the distribution, well of interior and interlayer in oil reservoir, petrophysical data.
It further include connected applications intake profile data, production profile data, carbon/oxygen log, boron neutron longevity in step 2
Life carries out Quantitative Study to remaining oil.
In third step, with the factor position grade of calculated result for ordinate, cause the average value of the sum of result for cross with position grade
Coordinate makees the number tendency chart of position grade；Quadratic sum and all test results for calculating result caused by the position grade of each factor are flat
The difference of the average value of side's sum, logarithmic mode calculated result carry out multiple regression.
The foregoing is only a preferred embodiment of the present invention, the scope of protection of the present invention is not limited to this, it is any ripe
Know those skilled in the art within the technical scope of the present disclosure, the letter for the technical solution that can be become apparent to
Altered or equivalence replacement are fallen within the protection scope of the present invention.
Claims (4)
1. a kind of Remaining Oil Distribution quantitative analysis method, which comprises the following steps:
The first step, the foundation of grid system utilize local mesh reflnement technical modelling well and man-made fracture；
Second step, porosity, permeability, the original basic parameter input containing saturation degree, the determination of Living space are opposite to permeate
The selection of rate curve；
Third step carries out sensibility quantitative analysis to parameter, is preferably set with the method logarithmic mode scheme that orthogonal test is related to
Meter；
4th step, foundation of the oil field Production development data as history matching carry out Integrated Checkout to the model of foundation.
2. Remaining Oil Distribution quantitative analysis method according to claim 1, which is characterized in that base described in step 2
This parameter further include: the oil displacement efficiency of oil reservoir, the water out behavior of oil reservoir and remaining oil are in layer and the distribution of interlayer, well are in oil reservoir
Position, petrophysical data.
3. Remaining Oil Distribution quantitative analysis method according to claim 1, which is characterized in that in step 2, also wrap
Connected applications intake profile data, production profile data, carbon/oxygen log, boron neutron lifetime is included quantitatively to divide remaining oil
Analysis research.
4. Remaining Oil Distribution quantitative analysis method according to claim 1, which is characterized in that in third step, in terms of
The factor position grade for calculating result is ordinate, causes the average value of the sum of result as abscissa using position grade, makees the number trend of position grade
Figure；Calculate the difference of the quadratic sum of result caused by the position grade of each factor and the average value of all test result quadratic sums, logarithm
Mould calculated result carries out multiple regression.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112196527A (en) * | 2020-11-02 | 2021-01-08 | 西南石油大学 | Method for determining water body size of fracture-cavity type oil reservoir |
| CN115422789A (en) * | 2022-11-07 | 2022-12-02 | 中国石油大学(华东) | Prediction method and system for optimizing water drive recovery ratio of fault block oil reservoir in consideration of whole process |
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| CN104963657A (en) * | 2015-05-27 | 2015-10-07 | 中国石油天然气股份有限公司 | Oil reservoir numerical simulation method and apparatus based on high water-cut period monitoring data constraints |
| CN108104806A (en) * | 2017-12-14 | 2018-06-01 | 中国石油化工股份有限公司 | Remaining Oil Distribution quantitative analysis method |
| CN108984952A (en) * | 2018-08-08 | 2018-12-11 | 中国海洋石油集团有限公司 | A kind of oil field injectability variation prediction method |
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| CN104963657A (en) * | 2015-05-27 | 2015-10-07 | 中国石油天然气股份有限公司 | Oil reservoir numerical simulation method and apparatus based on high water-cut period monitoring data constraints |
| CN108104806A (en) * | 2017-12-14 | 2018-06-01 | 中国石油化工股份有限公司 | Remaining Oil Distribution quantitative analysis method |
| CN108984952A (en) * | 2018-08-08 | 2018-12-11 | 中国海洋石油集团有限公司 | A kind of oil field injectability variation prediction method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112196527A (en) * | 2020-11-02 | 2021-01-08 | 西南石油大学 | Method for determining water body size of fracture-cavity type oil reservoir |
| CN112196527B (en) * | 2020-11-02 | 2022-02-15 | 西南石油大学 | Method for determining water body size of fracture-cavity type oil reservoir |
| CN115422789A (en) * | 2022-11-07 | 2022-12-02 | 中国石油大学(华东) | Prediction method and system for optimizing water drive recovery ratio of fault block oil reservoir in consideration of whole process |
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