CN106368647A - Method for determining dosage of profile control agent of horizontal well - Google Patents
Method for determining dosage of profile control agent of horizontal well Download PDFInfo
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- CN106368647A CN106368647A CN201610857400.3A CN201610857400A CN106368647A CN 106368647 A CN106368647 A CN 106368647A CN 201610857400 A CN201610857400 A CN 201610857400A CN 106368647 A CN106368647 A CN 106368647A
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000002347 injection Methods 0.000 claims abstract description 14
- 239000007924 injection Substances 0.000 claims abstract description 14
- 239000003129 oil well Substances 0.000 claims abstract description 12
- 230000035699 permeability Effects 0.000 claims abstract description 11
- 241000209094 Oryza Species 0.000 claims description 11
- 235000007164 Oryza sativa Nutrition 0.000 claims description 11
- 235000009566 rice Nutrition 0.000 claims description 11
- 230000037361 pathway Effects 0.000 claims description 7
- 239000000700 radioactive tracer Substances 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 238000012546 transfer Methods 0.000 description 11
- 239000000203 mixture Substances 0.000 description 10
- 230000015572 biosynthetic process Effects 0.000 description 7
- 238000000205 computational method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012925 reference material Substances 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Classifications
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The application discloses a method for determining dosage of a profile control agent of a horizontal well, which comprises the following steps: acquiring oil well parameters and oil layer parameters; acquiring a direction coefficient and a profile control area coefficient of an oil layer; and calculating the dosage of the profile control agent of the horizontal well through a preset algorithm according to the oil well parameters, the oil layer parameters, the direction coefficient and the profile control area coefficient. Wherein the oil well parameters comprise a profile control radius and the length of a horizontal section of the water injection well; the reservoir parameters include the thickness of the reservoir, porosity, and the percentage of the thickness of the high permeability layer to the thickness of the reservoir.
Description
Technical field
The present invention relates to belonging to oil extraction in oil field technology field, more particularly, to a kind of side determining horizontal well Amount of profile control agent
Method.
Background technology
For water injection well, due to the anisotropism on stratum and the inhomogeneities of stratum water absorbing capacity, each layer of stratum
Water absorption is all unbalanced, or even the water absorption of each layer of each section is all different.
In order to adjust the intake profile of water injection well, improve the sweep efficiency of injection water, improving ecology effect, in stratum
High permeability zone injects chemical agent, after medicament solidification or expansion, reduces the permeability of oil reservoir, forces injection water to increase to low aqueous
The displacement of reservoir oil effect at position, thus form profile control technology.
During horizontal flood well profile control, the calculating for Amount of profile control agent at present does not form specification.Existing
The computational methods of Amount of profile control agent mainly have cylindrical method.Wherein, cylindrical algorithm is to be considered as horizontal well in calculating process
Straight well is processed.And calculated using below equation:
In above formula, v is Amount of profile control agent, cubic meter;R is radius of profile control, rice;H is formation thickness, rice;Hole for stratum
Porosity;α accounts for the percent of formation thickness for high permeability zone thickness.
In existing Amount of profile control agent calculating process as shown in Figure 1 and Figure 2, in parameter value, transfer drive radius r is due to being subject to
To the impact of core intersection, value is too small, and core intersection h is equivalent to the length of horizontal segment Thief zone section, then according to above-mentioned public affairs
Formula calculates Amount of profile control agent.
But, existing computational methods are limited due to core intersection, and transfer drive radius value is little, lead to the transfer drive consumption calculating
Very little requires it is impossible to meet transfer drive.
Content of the invention
In view of the deficiencies in the prior art, the application is necessary to provide a kind of method determining horizontal well Amount of profile control agent, with
Actual transfer drive consumption can be met, meet live transfer drive and require.
For reaching above-mentioned purpose, the application provides a kind of method determining horizontal well Amount of profile control agent, comprising:
Obtain oilwell parameter and reservoir parameter;
Obtain direction coefficient and the profile control area coefficient of oil reservoir;
Calculated by pre-defined algorithm according to described oilwell parameter and reservoir parameter, described direction coefficient and profile control area coefficient
Horizontal well Amount of profile control agent.
As one kind preferred embodiment, described oilwell parameter includes the horizontal section length of radius of profile control and water injection well;
Thickness, porosity and high permeability zone thickness that described reservoir parameter includes oil reservoir account for the percent of core intersection.
As one kind preferred embodiment, the step obtaining the direction coefficient of oil reservoir is:
Determine the predominant pathway in well pattern by tracer test;
Described direction coefficient is obtained divided by the quantity of producing well in well pattern by the quantity of predominant pathway.
As one kind preferred embodiment, the step obtaining the profile control area coefficient of oil reservoir is:
Profile control direction is determined by tracer test;
The profile control area coefficient corresponding with described profile control direction is determined according to described profile control direction.
As one kind preferred embodiment, when described profile control direction has a direction, described profile control area coefficient is
0.99;
When described profile control direction has two relative directions, described profile control area coefficient is 0.95;
When described profile control direction has two adjacent directions, described profile control area coefficient is 0.92;
When described profile control direction has three directions, described profile control area coefficient is 0.89;
When described profile control direction has four direction, described profile control area coefficient is 0.86.
As one kind preferred embodiment, described radius of profile control is the 1/2~1/3 of oil-water well well spacing.
As one kind preferred embodiment, described reservoir parameter is obtained by log data.
As one kind preferred embodiment, described pre-defined algorithm includes equation below:
In above formula, v is the injection rate of profile control agent, cubic meter;R is radius of profile control, rice;L is water injection well horizontal section length,
Rice;H is the thickness of oil reservoir, rice;For the porosity of oil reservoir, dimensionless;α accounts for the percent of core intersection for high permeability zone thickness,
Dimensionless;δ is direction coefficient, dimensionless;β is profile control area coefficient, dimensionless.
By above description as can be seen that the method for determination horizontal well Amount of profile control agent that present embodiment is provided is passed through
Consider direction coefficient and the profile control area coefficient of oil reservoir, and Amount of profile control agent is determined using pre-defined algorithm, thus the profile control obtaining
Agent consumption can meet actual transfer drive consumption, meet live transfer drive and require.
With reference to explanation hereinafter and accompanying drawing, disclose in detail only certain exemplary embodiments of this invention, specify the former of the present invention
Reason can be in adopted mode.It should be understood that embodiments of the present invention are not so limited in scope.In appended power
In the range of the spirit and terms that profit requires, embodiments of the present invention include many changes, modifications and are equal to.
The feature describing for a kind of embodiment and/or illustrating can be in same or similar mode one or more
Use in individual other embodiment, combined with the feature in other embodiment, or substitute the feature in other embodiment.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or assembly herein when using, but simultaneously
It is not excluded for the presence of one or more further features, one integral piece, step or assembly or additional.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this
Some embodiments of invention, for those skilled in the art, without having to pay creative labor, can also root
Obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is the horizontal well schematic diagram using existing Amount of profile control agent computational methods;
Fig. 2 is the equivalent straight well schematic diagram of horizontal well in Fig. 1;
Fig. 3 is a kind of step stream of a kind of method of determination horizontal well Amount of profile control agent of embodiment offer of the application
Cheng Tu;
Fig. 4 is the horizontal well generalized section using method shown in Fig. 3.
Specific embodiment
In order that those skilled in the art more fully understand the technical scheme in the application, real below in conjunction with the application
Apply the accompanying drawing in example, the enforcement it is clear that described is clearly and completely described to the technical scheme in the embodiment of the present application
Example is only some embodiments of the present application, rather than whole embodiments.Based on the embodiment in the application, this area is common
The every other embodiment that technical staff is obtained on the premise of not making creative work, all should belong to the present invention and protect
The scope of shield.
It should be noted that when element is referred to as " being arranged at " another element, it can be directly on another element
Or can also there is element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or may be simultaneously present centering elements.Term as used herein " vertical ", " level ", " left ",
For illustrative purposes only, being not offered as is unique embodiment for " right " and similar statement.
Unless otherwise defined, all of technology used herein and scientific terminology and the technical field belonging to the present invention
The implication that technical staff is generally understood that is identical.The term being used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body is it is not intended that in limiting the present invention.Term as used herein "and/or" includes one or more
The arbitrary and all of combination of related Listed Items.
As shown in figure 3, a kind of a kind of method bag of determination horizontal well Amount of profile control agent of embodiment offer of the application
Include following steps:
S1, acquisition oilwell parameter and reservoir parameter;
S2, the direction coefficient obtaining oil reservoir and profile control area coefficient;
S3, pre-defined algorithm is passed through according to described oilwell parameter and reservoir parameter, described direction coefficient and profile control area coefficient
Calculated level well Amount of profile control agent.
Wherein, step s1, the execution of step s2 have no sequencing, can execute it is also possible to successively execute simultaneously, when
So, and be not limited to step s1 and operate prior to step s2, step s2 also can operate prior to step s1, and the application does not make any limit
System.
In the present embodiment, described oilwell parameter includes the horizontal section length of radius of profile control and water injection well;Described oil reservoir
Thickness, porosity and high permeability zone thickness that parameter includes oil reservoir account for the percent of core intersection.Wherein, radius of profile control is
The scope that profile control agent is involved.As preferred, described radius of profile control is preferably the 1/2~1/3 of oil-water well well spacing.
As shown in figure 4, present embodiment is that core intersection h is considered as cuboid is high, 2 times of 2r of transfer drive radius are considered as rectangular
The width of body, horizontal section length l is considered as the length of cuboid.Simultaneously it is considered to formation porosity, high permeability zone thickness account for formation thickness
Percent, direction coefficient, the influence factor of profile control area coefficient.
Therefore, in the present embodiment, described pre-defined algorithm includes equation below:
In above formula, v is the injection rate of profile control agent, cubic meter;R is radius of profile control, rice;L is water injection well horizontal section length,
Rice;H is the thickness of oil reservoir, rice;For the porosity of oil reservoir, dimensionless;α accounts for the percent of core intersection for high permeability zone thickness,
Dimensionless;δ is direction coefficient, dimensionless;β is profile control area coefficient, dimensionless.
By above description as can be seen that the method for determination horizontal well Amount of profile control agent that present embodiment is provided is passed through
Consider direction coefficient and the profile control area coefficient of oil reservoir, and Amount of profile control agent is determined using pre-defined algorithm, thus the profile control obtaining
Agent consumption can meet actual transfer drive consumption, meet live transfer drive and require.
In the present embodiment, described reservoir parameter is obtained by log data.Specifically, formation porosity, Thief zone
The percent that thickness degree accounts for formation thickness can be measured by well logging, such as, by gathering multiple rock cores, by measuring rock core
Porosity is reflecting formation porosity.
In the present embodiment, the step obtaining the direction coefficient of oil reservoir is: can first pass through tracer test and determine well
Predominant pathway in net;Again described direction coefficient is obtained divided by the quantity of producing well in well pattern by the quantity of predominant pathway.
As can be seen that described direction coefficient accounts for the ratio of producing well (producing well) number, wherein, advantage for predominant pathway direction
Also known as advantage dust trajectory, it is passage or the path in conducting system most beneficial for oil-gas migration to passage.In present embodiment
In, direction coefficient is the correction coefficient of profile control agent uneven entrance in all directions.
In the present embodiment, the step obtaining the profile control area coefficient of oil reservoir is: first passes through tracer test and determines tune
Cut open direction;Determine the profile control area coefficient corresponding with described profile control direction further according to described profile control direction.Specifically, profile control face
Long-pending coefficient is by empirically determined for following table, comparison following table during calculating Amount of profile control agent.
Profile control direction table corresponding with profile control area coefficient
By above table as can be seen that when described profile control direction has a direction, described profile control area coefficient is
0.99;When described profile control direction has two relative directions, described profile control area coefficient is 0.95;Described profile control direction has
During two adjacent directions, described profile control area coefficient is 0.92;When described profile control direction has three directions, described profile control face
Long-pending coefficient is 0.89;When described profile control direction has four direction, described profile control area coefficient is 0.86.
Herein cited any digital value all include between lower limit to higher limit with the lower value of an incremented and
, there is the interval of at least two units between any lower value and any much higher value in all values of upper value.For example, such as
Fruit elaborates that the quantity of a part or the value of process variable (such as temperature, pressure, time etc.) are from 1 to 90, preferably from 20
To 80, more preferably from 30 to 70, then purpose illustrates that also clearly listing such as 15 to 85,22 in this description arrives
68th, 43 to 51,30 to 32 is equivalent.For the value less than 1, suitably think that a unit is 0.0001,0.001,0.01,0.1.
These are only intended to the example of clearly expression it is believed that being possible to of the numerical value enumerated between minimum and peak
Combination is all expressly set forth in this description in a similar manner.
Unless otherwise stated, all scopes all include all numerals between end points and end points.It is used together with scope
" about " or " approximate " be suitable for two end points of this scope.Thus, " about 20 to 30 " be intended to cover " about 20 to about
30 ", at least include the end points indicating.
The all articles disclosing and reference material, including patent application and publication, pass through to quote knot for various purposes
Together in this.The term " substantially by ... constitute " of description combination should include determined by element, composition, part or step and reality
The other elements of basic novel feature, composition, part or the step of this combination are not affected on matter.Using term "comprising" or
" inclusion " come to describe element here, composition, part or step combination it is also contemplated that basic by these elements, composition, part
Or the embodiment that step is constituted.Described any here by included using term " can " it is intended to explanation " can "
Attribute is all optional.
Multiple element, composition, part or step can be provided by single integrated component, composition, part or step.Alternative
Ground, single integrated component, composition, part or step can be divided into detached multiple element, composition, part or step.It is used for
Description element, the open "a" or "an" of composition, part or step are not said to exclude other elements, composition, part
Or step.
It should be understood that above description is to illustrate rather than to be limited.By reading above-mentioned retouching
State, the many embodiments outside the example being provided and many applications will be all aobvious and easy for a person skilled in the art
See.Therefore, the scope of this teaching should not determine with reference to foregoing description, but should with reference to claims and this
The four corner of the equivalent that a little claim are had is determining.For comprehensive purpose, all articles and reference are included specially
The disclosure of profit application and bulletin is all by reference to being incorporated herein.Theme disclosed herein is omitted in aforementioned claim
Any aspect is not intended to abandon this body matter, also should not be considered as inventor this theme is not thought of as disclosed
A part for subject matter.
Claims (8)
1. a kind of method determining horizontal well Amount of profile control agent is it is characterised in that include:
Obtain oilwell parameter and reservoir parameter;
Obtain direction coefficient and the profile control area coefficient of oil reservoir;
Pre-defined algorithm calculated level is passed through according to described oilwell parameter and reservoir parameter, described direction coefficient and profile control area coefficient
Well Amount of profile control agent.
2. the method for claim 1 it is characterised in that: described oilwell parameter includes the water of radius of profile control and water injection well
Flat segment length;Thickness, porosity and high permeability zone thickness that described reservoir parameter includes oil reservoir account for the percentage of core intersection
Number.
3. the method for claim 1 it is characterised in that: the step of direction coefficient obtaining oil reservoir is:
Determine the predominant pathway in well pattern by tracer test;
Described direction coefficient is obtained divided by the quantity of producing well in well pattern by the quantity of predominant pathway.
4. the method for claim 1 it is characterised in that: the step of profile control area coefficient obtaining oil reservoir is:
Profile control direction is determined by tracer test;
The profile control area coefficient corresponding with described profile control direction is determined according to described profile control direction.
5. method as claimed in claim 4 it is characterised in that:
When described profile control direction has a direction, described profile control area coefficient is 0.99;
When described profile control direction has two relative directions, described profile control area coefficient is 0.95;
When described profile control direction has two adjacent directions, described profile control area coefficient is 0.92;
When described profile control direction has three directions, described profile control area coefficient is 0.89;
When described profile control direction has four direction, described profile control area coefficient is 0.86.
6. the method for claim 1 it is characterised in that: described radius of profile control be oil-water well well spacing 1/2~1/3.
7. the method for claim 1 it is characterised in that: described reservoir parameter is obtained by log data.
8. the method for claim 1 it is characterised in that: described pre-defined algorithm includes equation below:
In above formula, v is the injection rate of profile control agent, cubic meter;R is radius of profile control, rice;L is water injection well horizontal section length, rice;H is
The thickness of oil reservoir, rice;For the porosity of oil reservoir, dimensionless;α accounts for the percent of core intersection for high permeability zone thickness, immeasurable
Guiding principle;δ is direction coefficient, dimensionless;β is profile control area coefficient, dimensionless.
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Cited By (8)
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---|---|---|---|---|
CN108590571A (en) * | 2018-03-27 | 2018-09-28 | 中国石油天然气股份有限公司 | Method for determining dosage of profile control agent of low-permeability fractured water-breakthrough reservoir for water injection well |
CN108756837A (en) * | 2018-05-02 | 2018-11-06 | 中国石油天然气股份有限公司 | Water injection well profile control and flooding method |
CN110029973A (en) * | 2018-01-11 | 2019-07-19 | 中国石油化工股份有限公司 | A kind of method that multiple dimensioned frozen glue dispersion improves reservoir water drive effect |
CN110374562A (en) * | 2019-06-24 | 2019-10-25 | 中国石油化工股份有限公司 | A kind of stifled tune method of oil reservoir |
CN110410045A (en) * | 2019-06-24 | 2019-11-05 | 中国石油化工股份有限公司 | A kind of stifled tune method for ultra-high water cut stage oil reservoir |
CN110439502A (en) * | 2019-06-24 | 2019-11-12 | 中国石油化工股份有限公司 | A kind of reservoir water drive band analysis method |
CN110617042A (en) * | 2019-10-12 | 2019-12-27 | 中国石油化工股份有限公司 | Layered water injection regulation and control method for high water-consumption zone development oil reservoir |
CN116044391A (en) * | 2023-03-09 | 2023-05-02 | 西南石油大学 | Method for determining dosage of profile control agent of low permeability reservoir horizontal well |
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Cited By (11)
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CN110029973A (en) * | 2018-01-11 | 2019-07-19 | 中国石油化工股份有限公司 | A kind of method that multiple dimensioned frozen glue dispersion improves reservoir water drive effect |
CN108590571A (en) * | 2018-03-27 | 2018-09-28 | 中国石油天然气股份有限公司 | Method for determining dosage of profile control agent of low-permeability fractured water-breakthrough reservoir for water injection well |
CN108756837A (en) * | 2018-05-02 | 2018-11-06 | 中国石油天然气股份有限公司 | Water injection well profile control and flooding method |
CN110374562A (en) * | 2019-06-24 | 2019-10-25 | 中国石油化工股份有限公司 | A kind of stifled tune method of oil reservoir |
CN110410045A (en) * | 2019-06-24 | 2019-11-05 | 中国石油化工股份有限公司 | A kind of stifled tune method for ultra-high water cut stage oil reservoir |
CN110439502A (en) * | 2019-06-24 | 2019-11-12 | 中国石油化工股份有限公司 | A kind of reservoir water drive band analysis method |
CN110374562B (en) * | 2019-06-24 | 2021-09-10 | 中国石油化工股份有限公司 | Oil reservoir plugging and adjusting method |
CN110439502B (en) * | 2019-06-24 | 2021-10-26 | 中国石油化工股份有限公司 | Oil reservoir water flooding zone analysis method |
CN110617042A (en) * | 2019-10-12 | 2019-12-27 | 中国石油化工股份有限公司 | Layered water injection regulation and control method for high water-consumption zone development oil reservoir |
CN110617042B (en) * | 2019-10-12 | 2021-09-28 | 中国石油化工股份有限公司 | Layered water injection regulation and control method for high water-consumption zone development oil reservoir |
CN116044391A (en) * | 2023-03-09 | 2023-05-02 | 西南石油大学 | Method for determining dosage of profile control agent of low permeability reservoir horizontal well |
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