CN107366529A - Heterogeneous water-drive pool Dimensionless liquid production index curve characterizing method - Google Patents
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
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Abstract
The present invention provides a kind of heterogeneous water-drive pool Dimensionless liquid production index curve characterizing method, including：Carry out indoor flood pot test under the conditions of different permeabilities, permeability grade；According to experimental data, the mathematic(al) representation of Dimensionless liquid production index and moisture content is established in analysis, and expression formula coefficient is a, b, c；Dimensionless liquid production index and mathematic(al) representation coefficient a, b, c of moisture content and the mathematic(al) representation of permeability are established, expression formula coefficient is A1、A2、B1、B2、C1、C2；Establish A1、A2、B1、B2、C1、C2With the mathematic(al) representation of permeability grade；Form Dimensionless liquid production index and permeability, permeability grade, the mathematic(al) representation of moisture content.The influence of oil and water zonation and change procedure to liquid-producing capacity in stratum caused by this method can fully reflect the reservoir of mining site objective reality, enhances directive function of the Dimensionless liquid production index curve to mining site Development Practice.
Description
Technical field
The present invention relates to oil field development technical field, especially relate to a kind of heterogeneous water-drive pool zero dimension and adopt liquid to refer to
Number curve characterizing method.
Background technology
The water drive that reservoir heterogeneity and profit viscosity differences reduce oil reservoir involves degree, cause oil well shift to an earlier date water breakthrough and
Yield is significantly successively decreased after water breakthrough.It is the important act for delaying production decline in the water controlled field ultra-high water-containing stage to keep rationally producing liquid scale
One of arrange.At present, in mining site Development and Production mainly using the profit phase percolation curve of laboratory test core test calculate it is no because
Secondary fluid productivity index determines the reasonable Liquid output size in oil field as theoretical foundation with the changing rule of moisture content.But calculated
Dimensionless liquid production index it is only relevant with moisture content, do not consider due to reservoir properties it is heterogeneous caused by oil and water zonation in stratum
With influence of the change procedure to liquid-producing capacity.That is, water drive oil mode in rock core and three-dimensional heterogeneous reservoir exist compared with
Big difference, the Dimensionless liquid production index curve theory algorithm based on rock core phase percolation curve are not particularly suited for true oil reservoir.For this I
Invented a kind of new heterogeneous water-drive pool Dimensionless liquid production index curve characterizing method, solve above technical problem.
The content of the invention
It is an object of the invention to provide one kind can with Dimensionless liquid production index under accurate characterization oil reservoir heterogeneous conditions with containing
The heterogeneous water-drive pool Dimensionless liquid production index curve characterizing method of water rate changing rule.
The purpose of the present invention can be achieved by the following technical measures：Heterogeneous water-drive pool Dimensionless liquid production index curve
Characterizing method, the heterogeneous water-drive pool Dimensionless liquid production index curve characterizing method include：Step 1, carry out different permeabilities,
Indoor flood pot test under the conditions of permeability grade；Step 2, Dimensionless liquid production index is established with containing according to experimental data, analysis
The mathematic(al) representation of water rate, expression formula coefficient are a, b, c；Step 3, the mathematical expression of Dimensionless liquid production index and moisture content is established
Formula coefficient a, b, c and permeability mathematic(al) representation, expression formula coefficient are A1、A2、B1、B2、C1、C2；Step 4, A is established1、A2、
B1、B2、C1、C2With the mathematic(al) representation of permeability grade；Step 5, Dimensionless liquid production index and permeability, permeability level are formed
Difference, the mathematic(al) representation of moisture content.
The purpose of the present invention can be also achieved by the following technical measures：
In step 1, indoor single pipe flood pot test under the conditions of different permeabilities is carried out；Carry out different permeability grade bars
Indoor multitube parallel flood pot test under part, characterized for Dimensionless liquid production index curve and sample data is provided.
In step 1, different infiltrations are made using with identical mineral composition, the quartz sand of different grain size distribution and clay
The back-up sand simulation core of rate, carry out single tube, two-tube unstable state flood pot test in parallel respectively under the conditions of constant pressure difference, simulate
Rock core perm-plug method is from 595x 10-3μm2To 6232x 10-3μm2, the permeability grade of parallel core is up to 8.7, configuration
White oil viscosity be 15mPas, simulated formation water salinity is 3000PPM, viscosity 1mPas.
In step 2, the changing rule of every group of experimental data Dimensionless liquid production index-moisture content is analyzed, foundation is generally fitted
The mathematic(al) representation of Dimensionless liquid production index-moisture content：
In formula：JLD- Dimensionless liquid production index；Fw-moisture content；A, b, c-coefficient.
In step 3, Dimensionless liquid production index-moisture content mathematic(al) representation coefficient similar in permeability grade is analyzed with oozing
The changing rule of saturating rate, establish the once linear expression formula of a, b, c and permeability：
In formula：K-permeability, 10-3μm2；A1、A2、B1、B2、C1、C2- coefficient.
In step 4, under the conditions of analyzing different permeability grades, coefficient A1、A2、B1、B2、C1、C2With permeability grade
Changing rule, establish A1、A2、B1、B2、C1、C2With the mathematic(al) representation of permeability grade：
B1=-0.0004KD B2=1.1925KD-1.1108
C1=0.0003KD C2=-0.6905KD+1.3529
In formula：KD- permeability grade, decimal.
In steps of 5, Dimensionless liquid production index J is establishedLDWith permeability, permeability grade, moisture content mathematic(al) representation：
In formula, K-permeability；
KD- permeability grade, decimal；
Fw-moisture content.
Heterogeneous water-drive pool Dimensionless liquid production index curve characterizing method in the present invention, it is related to oil field development technology neck
Dimensionless liquid production index is with water-cut variation under domain, more particularly to reservoir engineering empirical method, i.e. water-drive pool heterogeneous conditions
The mathematical character method of rule.This method based on the flood pot test data analysis of parallel core, recurrence establish permeability,
The equation with many unknowns that permeability grade influences on Dimensionless liquid production index with water cut changing law, characterize under oil reservoir heterogeneous conditions
Dimensionless liquid production index with moisture content changing rule.
Brief description of the drawings
Fig. 1 is a specific embodiment of the heterogeneous water-drive pool Dimensionless liquid production index curve characterizing method of the present invention
Flow chart；
Fig. 2 is the relation curve of Dimensionless liquid production index and moisture content in a specific embodiment of the invention；
Fig. 3 is a, b, c and the relation curve of permeability in a specific embodiment of the invention；
Fig. 4 is A in a specific embodiment of the invention1、A2、B1、B2、C1、C2With the relation curve of permeability grade.
Embodiment
For enable the present invention above and other objects, features and advantages become apparent, it is cited below particularly go out preferable implementation
Example, and coordinate shown in accompanying drawing, it is described in detail below.
As shown in figure 1, Fig. 1 is the flow of the heterogeneous water-drive pool Dimensionless liquid production index curve characterizing method of the present invention
Figure.
Step 101, indoor flood pot test under the conditions of different permeabilities, permeability grade is carried out.Carry out different permeabilities
Under the conditions of indoor single pipe flood pot test；Carry out indoor multitube parallel flood pot test under the conditions of different permeability grades, be nothing
Dimension fluid productivity index curve, which characterizes, provides sample data.
Step 103, according to experimental data, the mathematic(al) representation of Dimensionless liquid production index and moisture content, expression are established in analysis
Formula coefficient is a, b, c.The changing rule of every group of experimental data Dimensionless liquid production index-moisture content is analyzed, is established blanket
The mathematic(al) representation of Dimensionless liquid production index-moisture content,
In formula：JLD- Dimensionless liquid production index；Fw-moisture content；A, b, c-coefficient.
Step 105, Dimensionless liquid production index and mathematic(al) representation coefficient a, b, c of moisture content and the mathematics of permeability are established
Expression formula, expression formula coefficient are A1、A2、B1、B2、C1、C2。
Analyze the change of Dimensionless liquid production index-moisture content mathematic(al) representation coefficient and permeability similar in permeability grade
Rule, establish the once linear expression formula of a, b, c and permeability.That is,
In formula：K-permeability, 10-3μm2；A1、A2、B1、B2、C1、C2- coefficient.
Step 107, A is established1、A2、B1、B2、C1、C2With the mathematic(al) representation of permeability grade.Analyze different permeability levels
Under the conditions of difference, coefficient A1、A2、B1、B2、C1、C2With the changing rule of permeability grade,
Establish A1、A2、B1、B2、C1、C2With the mathematic(al) representation of permeability grade.That is,
B1=-0.0004KD B2=1.1925KD-1.1108
C1=0.0003KD C2=-0.6905KD+1.3529。
In formula：KD- permeability grade, decimal.
Step 109, J is formedLDWith permeability, permeability grade, moisture content mathematic(al) representation.Integrate above-mentioned mathematical expression
Formula, finally establish JLDWith permeability, permeability grade, moisture content mathematic(al) representation.That is,
In the specific embodiment of the application present invention, include following steps：
In step 1, different infiltrations are made using with identical mineral composition, the quartz sand of different grain size distribution and clay
The back-up sand simulation core of rate, carry out single tube, two-tube 31 groups of unstable state flood pot test in parallel respectively under the conditions of constant pressure difference
(basic parameter is shown in Table 1).Simulation core perm-plug method is from 595x 10-3μm2To 6232x 10-3μm2, the infiltration of parallel core
Rate is differential to be up to 8.7.The white oil viscosity of configuration is 15mPas, and simulated formation water salinity is 3000PPM, viscosity is
1mPa·s。
The physical simulation experiment of table 1 tests basic parameter table
As shown in Fig. 2 according to permeability to be 595x 10-3μm2The zero dimension that single tube indoor experimental data obtains is adopted liquid and referred to
Number-moisture content relation curve.
In step 2, the changing rule of every group of experimental data Dimensionless liquid production index-moisture content is analyzed, foundation is generally fitted
The mathematic(al) representation of Dimensionless liquid production index-moisture content
Such as, permeability is 766x 10-3μm2The mathematic(al) representation of Dimensionless liquid production index-moisture content of single tube experiment is：
JLD=-0.5897fw 3+2.8069*fw 2+0.6503*fw+1；
Permeability is 2727x 10-3μm2The mathematic(al) representation of Dimensionless liquid production index-moisture content of single tube experiment is：JLD
=1.4431fw 3+1.1841*fw 2-0.0309*fw+1。
In step 3, Dimensionless liquid production index-moisture content mathematic(al) representation coefficient similar in permeability grade is analyzed with oozing
The changing rule of saturating rate, the once linear expression formula of a, b, c and permeability is established,
As shown in figure 3, permeability grade is 8.7 Dimensionless liquid production index-plot of water cut coefficient and the pass of permeability
It is to be：
A=0.00018K+2.20098；
B=-0.00103K+1.58715；
C=0.00033K+1.28637.
In step 4, under the conditions of analyzing different permeability grades, coefficient A1、A2、B1、B2、C1、C2With permeability grade
Changing rule, establish A1、A2、B1、B2、C1、C2With the mathematic(al) representation of permeability grade, as shown in Figure 4：
B1=-0.0004KD B2=1.1925KD-1.1108
C1=0.0003KD C2=-0.6905KD+1.3529。
In steps of 5, based on above-mentioned Dimensionless liquid production index-moisture content, coefficient a, b, c and permeability, coefficient A1、A2、
B1、B2、C1、C2With the relation of permeability grade, J is finally establishedLDWith permeability, permeability grade, moisture content mathematical expression
Formula.That is,
The present invention proposes that a kind of consideration reservoir heterogeneity (permeability, permeability grade) influences bar to flow through oil reservoir rule
Under part, Dimensionless liquid production index and permeability, permeability grade, the technical method of water-cut variation characterization of relation formula are established.Should
Oil and water zonation and change procedure are to producing liquid in stratum caused by method can fully reflect the reservoir of mining site objective reality
The influence of ability, enhance directive function of the Dimensionless liquid production index curve to mining site Development Practice.
Claims (7)
1. heterogeneous water-drive pool Dimensionless liquid production index curve characterizing method, it is characterised in that the heterogeneous water-drive pool without
Dimension fluid productivity index curve characterizing method includes：
Step 1, indoor flood pot test under the conditions of different permeabilities, permeability grade is carried out；
Step 2, the mathematic(al) representation of Dimensionless liquid production index and moisture content, expression formula coefficient are established according to experimental data, analysis
For a, b, c；
Step 3, Dimensionless liquid production index and mathematic(al) representation coefficient a, b, c of moisture content and the mathematical expression of permeability are established
Formula, expression formula coefficient are A1、A2、B1、B2、C1、C2；
Step 4, A is established1、A2、B1、B2、C1、C2With the mathematic(al) representation of permeability grade；
Step 5, Dimensionless liquid production index and permeability, permeability grade, the mathematic(al) representation of moisture content are formed.
2. heterogeneous water-drive pool Dimensionless liquid production index curve characterizing method according to claim 1, it is characterised in that
In step 1, indoor single pipe flood pot test under the conditions of different permeabilities is carried out；Carry out indoor under the conditions of different permeability grades
Multitube parallel flood pot test, characterized for Dimensionless liquid production index curve and sample data is provided.
3. heterogeneous water-drive pool Dimensionless liquid production index curve characterizing method according to claim 2, it is characterised in that
In step 1, using the back-up sand that different permeabilities are made with identical mineral composition, the quartz sand of different grain size distribution and clay
Simulation core, carries out single tube, two-tube unstable state flood pot test in parallel respectively under the conditions of constant pressure difference, and simulation core gas is surveyed
Permeability is from 595x10-3μm2To 6232x10-3μm2, the permeability grade of parallel core is up to 8.7, the white oil viscosity of configuration
For 15mPas, simulated formation water salinity is 3000PPM, viscosity 1mPas.
4. heterogeneous water-drive pool Dimensionless liquid production index curve characterizing method according to claim 1, it is characterised in that
In step 2, analyze the changing rule of every group of experimental data Dimensionless liquid production index-moisture content, establish it is blanket it is no because
The mathematic(al) representation of secondary fluid productivity index-moisture content：
<mrow>
<msub>
<mi>J</mi>
<mrow>
<mi>L</mi>
<mi>D</mi>
</mrow>
</msub>
<mo>=</mo>
<msubsup>
<mi>af</mi>
<mi>w</mi>
<mn>3</mn>
</msubsup>
<mo>+</mo>
<msubsup>
<mi>bf</mi>
<mi>w</mi>
<mn>2</mn>
</msubsup>
<mo>+</mo>
<msub>
<mi>cf</mi>
<mi>w</mi>
</msub>
<mo>+</mo>
<mn>1</mn>
</mrow>
In formula：JLD- Dimensionless liquid production index；Fw-moisture content；A, b, c-coefficient.
5. heterogeneous water-drive pool Dimensionless liquid production index curve characterizing method according to claim 1, it is characterised in that
In step 3, the change of Dimensionless liquid production index-moisture content mathematic(al) representation coefficient and permeability similar in permeability grade is analyzed
Law, establish the once linear expression formula of a, b, c and permeability：
<mfenced open = "{" close = "">
<mtable>
<mtr>
<mtd>
<mrow>
<mi>a</mi>
<mo>=</mo>
<msub>
<mi>A</mi>
<mn>1</mn>
</msub>
<mi>K</mi>
<mo>+</mo>
<msub>
<mi>A</mi>
<mn>2</mn>
</msub>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mi>b</mi>
<mo>=</mo>
<msub>
<mi>B</mi>
<mn>1</mn>
</msub>
<mi>K</mi>
<mo>+</mo>
<msub>
<mi>B</mi>
<mn>2</mn>
</msub>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mi>c</mi>
<mo>=</mo>
<msub>
<mi>C</mi>
<mn>1</mn>
</msub>
<mi>K</mi>
<mo>+</mo>
<msub>
<mi>C</mi>
<mn>2</mn>
</msub>
</mrow>
</mtd>
</mtr>
</mtable>
</mfenced>
In formula：K-permeability, 10-3μm2；A1、A2、B1、B2、C1、C2- coefficient.
6. heterogeneous water-drive pool Dimensionless liquid production index curve characterizing method according to claim 1, it is characterised in that
In step 4, under the conditions of analyzing different permeability grades, coefficient A1、A2、B1、B2、C1、C2With the changing rule of permeability grade,
Establish A1、A2、B1、B2、C1、C2With the mathematic(al) representation of permeability grade：
A2=-0.6155KD+1.4782
B1=-0.0004KD B2=1.1925KD-1.1108
C1=0.0003KD C2=-0.6905KD+1.3529
In formula：KD- permeability grade, decimal.
7. heterogeneous water-drive pool Dimensionless liquid production index curve characterizing method according to claim 1, it is characterised in that
In steps of 5, Dimensionless liquid production index J is establishedLDWith permeability, permeability grade, moisture content mathematic(al) representation：
<mfenced open = "" close = "">
<mtable>
<mtr>
<mtd>
<mrow>
<msub>
<mi>J</mi>
<mrow>
<mi>L</mi>
<mi>D</mi>
</mrow>
</msub>
<mo>=</mo>
<mrow>
<mo>(</mo>
<mrow>
<mn>0.0004</mn>
<msup>
<mi>e</mi>
<mrow>
<mn>0.2165</mn>
<msub>
<mi>K</mi>
<mi>D</mi>
</msub>
</mrow>
</msup>
<mi>K</mi>
<mo>-</mo>
<mn>0.6155</mn>
<msub>
<mi>K</mi>
<mi>D</mi>
</msub>
<mo>+</mo>
<mn>1.4782</mn>
</mrow>
<mo>)</mo>
</mrow>
<msubsup>
<mi>f</mi>
<mi>w</mi>
<mn>3</mn>
</msubsup>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mo>+</mo>
<mrow>
<mo>(</mo>
<mrow>
<mo>-</mo>
<mn>0.0004</mn>
<msub>
<mi>K</mi>
<mi>D</mi>
</msub>
<mi>K</mi>
<mo>+</mo>
<mn>1.1925</mn>
<msub>
<mi>K</mi>
<mi>D</mi>
</msub>
<mo>-</mo>
<mn>1.1108</mn>
</mrow>
<mo>)</mo>
</mrow>
<msubsup>
<mi>f</mi>
<mi>w</mi>
<mn>2</mn>
</msubsup>
</mrow>
</mtd>
</mtr>
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<mtd>
<mrow>
<mo>+</mo>
<mrow>
<mo>(</mo>
<mrow>
<mn>0.0003</mn>
<msub>
<mi>K</mi>
<mi>D</mi>
</msub>
<mi>K</mi>
<mo>-</mo>
<mn>0.6905</mn>
<msub>
<mi>K</mi>
<mi>D</mi>
</msub>
<mo>+</mo>
<mn>1.3529</mn>
</mrow>
<mo>)</mo>
</mrow>
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<mi>f</mi>
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</msub>
<mo>+</mo>
<mn>1</mn>
</mrow>
</mtd>
</mtr>
</mtable>
</mfenced>
In formula, K-permeability；
KD- permeability grade, decimal；
Fw-moisture content.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209308A (en) * | 2018-09-07 | 2019-01-15 | 中国石油化工股份有限公司 | A kind of method of ultra-high water cut reservoir waterflooding development |
| CN109403961A (en) * | 2018-09-29 | 2019-03-01 | 中国石油化工股份有限公司 | Commingling production oil reservoir Dimensionless liquid production index New calculating method |
| CN109441437A (en) * | 2018-09-07 | 2019-03-08 | 中国石油化工股份有限公司 | A kind of recognition methods in the highly water intensive channel of ultra-high water cut reservoir |
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| US5377756A (en) * | 1993-10-28 | 1995-01-03 | Mobil Oil Corporation | Method for producing low permeability reservoirs using a single well |
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| CN106285621A (en) * | 2015-05-21 | 2017-01-04 | 中国石油化工股份有限公司 | Method based on Multifactor Decision Making offshore oilfield new well in old district production capacity |
| CN106384188A (en) * | 2016-08-31 | 2017-02-08 | 中国石油集团川庆钻探工程有限公司 | Method for evaluating single-well water injection production potential of horizontal well of strongly heterogeneous carbonate reservoir |
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| US5377756A (en) * | 1993-10-28 | 1995-01-03 | Mobil Oil Corporation | Method for producing low permeability reservoirs using a single well |
| CN104912528A (en) * | 2014-03-10 | 2015-09-16 | 中国石油化工股份有限公司 | Method for identifying inflection point of water flooding characteristic curve in extra-high water cut stage |
| CN106285621A (en) * | 2015-05-21 | 2017-01-04 | 中国石油化工股份有限公司 | Method based on Multifactor Decision Making offshore oilfield new well in old district production capacity |
| CN106384188A (en) * | 2016-08-31 | 2017-02-08 | 中国石油集团川庆钻探工程有限公司 | Method for evaluating single-well water injection production potential of horizontal well of strongly heterogeneous carbonate reservoir |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209308A (en) * | 2018-09-07 | 2019-01-15 | 中国石油化工股份有限公司 | A kind of method of ultra-high water cut reservoir waterflooding development |
| CN109441437A (en) * | 2018-09-07 | 2019-03-08 | 中国石油化工股份有限公司 | A kind of recognition methods in the highly water intensive channel of ultra-high water cut reservoir |
| CN109403961A (en) * | 2018-09-29 | 2019-03-01 | 中国石油化工股份有限公司 | Commingling production oil reservoir Dimensionless liquid production index New calculating method |
| CN109403961B (en) * | 2018-09-29 | 2021-09-28 | 中国石油化工股份有限公司 | Non-dimensional liquid production index prediction method for multi-layer commingled oil reservoir |
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