CN111980657A - Oil reservoir flow field regulation and control method and device - Google Patents
Oil reservoir flow field regulation and control method and device Download PDFInfo
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- CN111980657A CN111980657A CN201910431091.7A CN201910431091A CN111980657A CN 111980657 A CN111980657 A CN 111980657A CN 201910431091 A CN201910431091 A CN 201910431091A CN 111980657 A CN111980657 A CN 111980657A
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- 238000000034 method Methods 0.000 title claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 234
- 238000002347 injection Methods 0.000 claims abstract description 219
- 239000007924 injection Substances 0.000 claims abstract description 219
- 238000004519 manufacturing process Methods 0.000 claims abstract description 183
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- 230000001276 controlling effect Effects 0.000 claims abstract description 11
- 238000000605 extraction Methods 0.000 claims description 23
- 239000007788 liquid Substances 0.000 claims description 10
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- 238000006073 displacement reaction Methods 0.000 abstract description 18
- 238000009826 distribution Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 10
- 230000035699 permeability Effects 0.000 description 10
- 230000015654 memory Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 239000003129 oil well Substances 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
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- 230000002776 aggregation Effects 0.000 description 1
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- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
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- 239000008213 purified water Substances 0.000 description 1
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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
- E21B43/30—Specific pattern of wells, e.g. optimising the spacing of wells
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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 invention discloses a method and a device for regulating and controlling an oil reservoir flow field, and belongs to the technical field of oil reservoir development. According to the method provided by the embodiment of the invention, the contribution rate of each water injection well to the adjacent oil production well is obtained by obtaining the oil production proportion and the water injection proportion between each water injection well and the adjacent oil production well in the target oil deposit, and the contribution rate between each water injection well and the adjacent oil production well is adjusted to be within the preset interval, so that the contribution rate between each water injection well and the adjacent oil production well in the oil deposit is more balanced, the balanced displacement can be realized, and the oil production efficiency is effectively improved.
Description
Technical Field
The invention relates to the technical field of oil reservoir development, in particular to a method and a device for regulating and controlling an oil reservoir flow field.
Background
Petroleum and natural gas are important strategic resources of the country and are important life lines for national economic development. With the expansion of the field of oil and gas exploration, the efficient development of oil reservoirs with high water-cut periods has become one of the main battlefields for improving the recovery ratio of each large oil field.
At present, the oil reservoir flow field is usually regulated and controlled based on data such as reservoir liquid volume, permeability and the like, but the method can only roughly represent the characteristics of the flow field, and neglects the influence of the displacement degree between an oil well and a water well on the flow field regulation and control process, so the oil reservoir flow field regulation and control method cannot effectively improve the oil extraction efficiency.
Disclosure of Invention
The embodiment of the invention provides a method and a device for regulating and controlling an oil reservoir flow field, which can solve the problem that the oil extraction efficiency cannot be effectively improved because the current commonly used method for regulating and controlling the oil reservoir flow field based on data such as reservoir liquid volume, permeability and the like can only roughly represent the characteristics of the flow field and neglects the influence of the displacement degree between an oil well and a water well on the flow field regulation and control process. The technical scheme is as follows:
in one aspect, a method for regulating a reservoir flow field is provided, which comprises:
obtaining the oil extraction ratio between each water injection well and the adjacent oil production well in the target oil reservoir, wherein the oil extraction ratio is as follows: in unit time, the mass ratio of the contribution of the water injection well to the oil production of the oil production well;
acquiring the water injection proportion between each water injection well and the adjacent oil production well in the target oil reservoir, wherein the water injection proportion is as follows: in unit time, the mass ratio of the water delivery amount of the water injection well to the oil production well to the total water injection amount of the water injection well;
calculating the contribution rate of each water injection well to the adjacent oil production well by using the following formula based on the oil production ratio between each water injection well and the adjacent oil production well and the water injection ratio between each water injection well and the adjacent oil production well:
In the formula: e-contribution rate of water injection well m to oil production well n, dimensionless, OmnProduction ratio between water injection well m and production well n, dimensionless, WmnThe water injection proportion between the water injection well m and the oil production well n is zero;
and regulating and controlling the flow field of the target oil reservoir based on the contribution rate of each water injection well to the adjacent oil production well.
In one possible implementation, the controlling the flow field of the target reservoir based on the contribution rate of each water injection well to the adjacent oil production well includes:
and adjusting the water injection amount of the water injection well of which the contribution rate is not in the preset threshold range so as to enable the adjusted contribution rate to be in the preset threshold range.
In one possible implementation, the method further includes:
and adjusting the liquid production amount of the oil production well of which the contribution rate is not in the preset threshold range so as to ensure that the adjusted contribution rate is in the preset threshold range.
In one possible implementation, the preset threshold is in a range of 0.95-1.13.
In one possible implementation, the water injection wells and the oil production wells in the target reservoir are arranged alternately, and each water injection well injects water into an adjacent oil production well.
In one aspect, a reservoir flow field regulation device is provided, the reservoir flow field regulation device comprising:
the oil extraction proportion acquisition module is used for acquiring the oil extraction proportion between each water injection well and the adjacent oil extraction well in the target oil reservoir, and the oil extraction proportion is as follows: in unit time, the mass ratio of the contribution of the water injection well to the oil production of the oil production well;
the water injection proportion acquisition module is used for acquiring the water injection proportion between each water injection well and the adjacent oil production well in the target oil reservoir, and the water injection proportion is as follows: in unit time, the mass ratio of the water delivery amount of the water injection well to the oil production well to the total water injection amount of the water injection well;
and the contribution rate acquisition module is used for calculating the contribution rate of each water injection well to the adjacent oil production well by using the following formula based on the oil production ratio between each water injection well and the adjacent oil production well and the water injection ratio between each water injection well and the adjacent oil production well:
in the formula: e-contribution rate of water injection well m to oil production well n, dimensionless, OmnProduction ratio between water injection well m and production well n, dimensionless, WmnThe water injection proportion between the water injection well m and the oil production well n is zero;
And the regulation and control module is used for regulating and controlling the flow field of the target oil reservoir based on the contribution rate of each water injection well to the adjacent oil production well.
In one possible implementation, the regulation module is configured to:
and adjusting the water injection amount of the water injection well of which the contribution rate is not in the preset threshold range so as to enable the adjusted contribution rate to be in the preset threshold range.
In one possible implementation, the regulation module is further configured to:
and adjusting the liquid production amount of the oil production well of which the contribution rate is not in the preset threshold range so as to ensure that the adjusted contribution rate is in the preset threshold range.
In one possible implementation, the preset threshold is in a range of 0.95-1.13.
In one possible implementation, the water injection wells and the oil production wells in the target reservoir are arranged alternately, and each water injection well injects water into an adjacent oil production well.
According to the method provided by the embodiment of the invention, the contribution rate of each water injection well to the adjacent oil production well is obtained by obtaining the oil production proportion and the water injection proportion between each water injection well and the adjacent oil production well in the target oil deposit, and the contribution rate between each water injection well and the adjacent oil production well is adjusted to be within the preset interval, so that the contribution rate between each water injection well and the adjacent oil production well in the oil deposit is more balanced, the balanced displacement can be realized, and the oil production efficiency is effectively improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flow chart of a reservoir flow field regulation method according to an embodiment of the present invention;
FIG. 2 is a flow chart of a reservoir flow field regulation method according to an embodiment of the present invention;
FIG. 3 is an initial streamline field distribution diagram of a reservoir flow field regulation method according to an embodiment of the present invention;
FIG. 4 is a reservoir permeability graph of a reservoir flow field modulation method provided by an embodiment of the invention;
FIG. 5 is a flow line field distribution diagram after regulation and control of a reservoir flow field regulation and control method provided by an embodiment of the invention;
FIG. 6 is a schematic structural diagram of an oil reservoir flow field regulating device according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a computer device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is a flowchart of a reservoir flow field regulation method according to an embodiment of the present invention, where the method may be applied to a computer device, and referring to fig. 1, the reservoir flow field regulation method includes:
101. and acquiring the oil extraction ratio between each water injection well and the adjacent oil production well in the target oil reservoir.
Wherein, the oil recovery proportion is: and in unit time, the mass ratio of the contribution of the water injection well to the oil production of the oil production well.
102. And acquiring the water injection proportion between each water injection well and the adjacent oil production well in the target oil reservoir.
Wherein, the water injection proportion is as follows: and in unit time, the mass ratio of the water delivery amount of the water injection well to the oil production well to the total water injection amount of the water injection well.
103. And calculating the contribution rate of each water injection well to the adjacent oil production well based on the oil production ratio between each water injection well and the adjacent oil production well and the water injection ratio between each water injection well and the adjacent oil production well.
Calculating the contribution rate of each water injection well to the adjacent oil production well by using the following formula:
in the formula: e-contribution rate of water injection well m to oil production well n, dimensionless, OmnProduction ratio between water injection well m and production well n, dimensionless, W mnAnd the water injection proportion between the water injection well m and the oil production well n is zero.
104. And regulating and controlling the flow field of the target oil reservoir based on the contribution rate of each water injection well to the adjacent oil production well.
According to the method provided by the embodiment of the invention, the contribution rate of each water injection well to the adjacent oil production well is obtained by obtaining the oil production proportion and the water injection proportion between each water injection well and the adjacent oil production well in the target oil deposit, and the contribution rate between each water injection well and the adjacent oil production well is adjusted to be within the preset interval, so that the contribution rate between each water injection well and the adjacent oil production well in the oil deposit is more balanced, the balanced displacement can be realized, and the oil production efficiency is effectively improved.
In a possible implementation manner, the regulating and controlling the flow field of the target oil reservoir based on the contribution rate of each water injection well to the adjacent oil production well includes:
and adjusting the water injection amount of the water injection well of which the contribution rate is not in the preset threshold range so as to enable the adjusted contribution rate to be in the preset threshold range.
In one possible implementation, the method further includes:
and adjusting the liquid production amount of the oil production well of which the contribution rate is not in the preset threshold range so that the adjusted contribution rate is in the preset threshold range.
In one possible implementation, the preset threshold range is 0.95-1.13.
In one possible implementation, the water injection wells and the production wells in the target reservoir are arranged alternately, with each water injection well injecting water into an adjacent production well.
Fig. 2 is a flowchart of a reservoir flow field regulation method according to an embodiment of the present invention, where the method may be applied to a computer device, and referring to fig. 2, the reservoir flow field regulation method includes:
201. and acquiring the oil extraction ratio between each water injection well and the adjacent oil production well in the target oil reservoir.
Wherein, the oil recovery proportion is: and in unit time, the mass ratio of the contribution of the water injection well to the oil production of the oil production well.
The oil deposit refers to basic aggregation of oil with the same pressure system in a single trap, and the target oil deposit refers to an oil deposit to be developed; the oil production well refers to a well which is specially drilled for producing oil and gas; an injection well refers to a well drilled for injecting purified water at the surface into a reservoir for the purpose of maintaining reservoir pressure and enhancing reservoir recovery. Multiple production wells and multiple injection wells are typically provided in the reservoir.
In one possible implementation, the water injection wells and the production wells in the target reservoir are arranged alternately, with each water injection well injecting water into an adjacent production well.
Furthermore, a streamline field distribution diagram can be made by using a streamline numerical simulation technology based on the positions of the injection wells and the production wells in the oil reservoir and the water injection amount of each injection well to the adjacent production wells, please refer to FIG. 3,
fig. 3 is an initial streamline field distribution diagram of a reservoir flow field control method according to an embodiment of the present invention, in fig. 3, a1-A8 represents water injection wells, 1-7 represents production wells, and as can be seen from fig. 3, the reservoir streamline field distribution is relatively uneven, for example, the water injection rate from the a4 water injection well to the production well No. 1 is significantly higher than the water injection rate from the a4 water injection well to the production well No. 4, and the uneven streamline field distribution reflects that a balanced displacement is not achieved in the reservoir, where the displacement refers to a process in which one phase in a fluid in a porous medium is displaced by another phase under a pressure gradient, and in this embodiment, the balanced displacement refers to a process in which the water injection rate is uneven between each water injection well and an adjacent production well in the reservoir under a pressure gradient in a rock formation.
The streamline numerical simulation technology is characterized in that the flow is represented by the density degree of the streamline, and the water injection well has more flow distribution in a certain direction, so that the streamline in the direction is denser. For a water injection well with large water injection quantity, the number of flow lines emitted along the direction of large water distribution quantity of the water injection well on the surface of a grid block comprising the water injection well is large, so that a preferential flow field is formed, and the number of flow lines along other directions is relatively small and is a non-preferential flow field. In addition, the flow lines are dense in the area with high flow velocity, and the flow lines are sparse in the area with low flow velocity, so that the distribution condition of the dominant flow field between the oil wells and the water wells can be qualitatively judged according to the number of the flow lines between the oil wells and the density degree.
202. And acquiring the water injection proportion between each water injection well and the adjacent oil production well in the target oil reservoir.
Wherein, the water injection proportion is as follows: and in unit time, the mass ratio of the water delivery amount of the water injection well to the oil production well to the total water injection amount of the water injection well.
The water injection proportion can quantitatively describe the distribution condition of the dominant flow field between oil-water wells, the dominant flow field is arranged between the water injection well with the larger water injection proportion and the oil production well, and the non-dominant flow field is arranged between the water injection well with the smaller water injection proportion and the oil production well.
If the water injection ratio of the water injection well to a certain oil production well is larger, the situation that the water injection well has more fluid flowing into the oil production well and the contribution value is large is shown, and the direction of the optimal flow field is determined according to the contribution value.
203. And calculating the contribution rate of each water injection well to the adjacent oil production well based on the oil production ratio between each water injection well and the adjacent oil production well and the water injection ratio between each water injection well and the adjacent oil production well.
Calculating the contribution rate of each water injection well to the adjacent oil production well by using the following formula:
in the formula: e-contribution rate of water injection well m to oil production well n, dimensionless, OmnProduction ratio between water injection well m and production well n, dimensionless, WmnAnd the water injection proportion between the water injection well m and the oil production well n is zero.
The contribution rate refers to the ratio of the oil extraction ratio and the water injection ratio between the water injection well and the corresponding oil production well, and can reflect the oil production contribution ratio of the water injection well to the oil production amount of the oil production well. For example, the initial contribution rates of the reservoirs in FIG. 3 can be seen in Table 1. In Table 1, A1-A8 represent water injection wells, and 1-7 represent oil production wells, and it can be seen from Table 1 that: initial contribution rates between each water injection well and adjacent oil production wells in the oil reservoir are unbalanced, so that the displacement degree in the oil reservoir is unbalanced.
TABLE 1
204. And adjusting the water injection amount of the water injection well of which the contribution rate is not in the preset threshold range so as to enable the adjusted contribution rate to be in the preset threshold range.
Specifically, the preset threshold range refers to the contribution rate required for achieving the equilibrium displacement of the oil reservoir, and can be obtained through the known contribution rate of the oil reservoir achieving the equilibrium displacement. The water injection proportion and the oil extraction proportion can be changed by adjusting the water injection quantity, so that the contribution rate is adjusted. The contribution rate between each water injection well and the adjacent oil production well is adjusted to be within a preset interval, so that the contribution rate between each water injection well and the adjacent oil production well in the oil deposit is more balanced, balanced displacement can be realized, and the oil extraction efficiency is effectively improved.
A plurality of permeabilities of different positions of the oil reservoir can be obtained, specifically, please refer to fig. 4, where fig. 4 is an oil reservoir permeability graph of an oil reservoir flow field regulation method provided by an embodiment of the present invention. The unit of permeability may be millidarcy, where different gray levels indicate different permeability, and greater depth indicates greater permeability. From this permeability, it can be seen that: the oil deposit has strong heterogeneity, through the permeability diagram, the fact that how to regulate and control the flow field cannot be identified from the physical property angle of the reservoir, for the reservoir with the same river and strong heterogeneity, a more direct index is often required to be found from dynamic parameters to reconstruct the flow field, as can be seen from the graph in fig. 3 and 4, the flow in all directions in an injection and production well group of the oil deposit is obviously different, and the heterogeneity causes that the oil deposit cannot realize balanced displacement.
After the control based on the above method, the controlled contribution ratios shown in table 2 can be obtained, where in table 2, a1-A8 represents water injection wells, 1-7 represent oil production wells, and it can be seen from table 2 that: the regulated contribution rate between each water injection well and the adjacent oil production well in the oil reservoir is relatively balanced, so that the displacement degree in the oil reservoir is relatively balanced.
TABLE 2
Fig. 5 corresponding to table 2 is a post-regulation streamline field distribution diagram of the reservoir flow field regulation and control method provided by the embodiment of the present invention, and it can be known from fig. 5 that: the oil deposit streamline field is distributed more evenly, the contribution rate is more balanced after the regulation and control between each water injection well and the adjacent oil production well in the oil deposit, and the displacement degree in the oil deposit is also more balanced.
According to the above-mentioned obtaining manner of the preset threshold and the historical data, in a possible implementation manner, the preset threshold is in a range of 0.95-1.13.
205. And adjusting the liquid production amount of the oil production well of which the contribution rate is not in the preset threshold range so that the adjusted contribution rate is in the preset threshold range.
After the water injection amount is adjusted, the contribution rate can be further adjusted by adjusting the liquid production amount, so that the contribution rate is closer to 1, and the displacement degree of the oil reservoir is further improved.
All the above-mentioned optional technical solutions can be combined arbitrarily to form the optional embodiments of the present invention, and are not described herein again.
According to the method provided by the embodiment of the invention, the contribution rate of each water injection well to the adjacent oil production well is obtained by obtaining the oil production proportion and the water injection proportion between each water injection well and the adjacent oil production well in the target oil deposit, and the contribution rate between each water injection well and the adjacent oil production well is adjusted to be within the preset interval, so that the contribution rate between each water injection well and the adjacent oil production well in the oil deposit is more balanced, the balanced displacement can be realized, and the oil production efficiency is effectively improved.
Fig. 6 is a schematic structural diagram of an oil reservoir flow field control device according to an embodiment of the present invention, please refer to fig. 6, where the oil reservoir flow field control device includes: an oil extraction ratio acquisition module 601, a water injection ratio acquisition module 602, a contribution ratio acquisition module 603 and a regulation module 604.
The oil extraction proportion obtaining module 601 is configured to obtain an oil extraction proportion between each water injection well and an adjacent oil production well in the target oil reservoir, where the oil extraction proportion is: in unit time, the mass ratio of the contribution of the water injection well to the oil production of the oil production well;
a water injection ratio obtaining module 602, configured to obtain a water injection ratio between each water injection well and an adjacent oil production well in the target oil reservoir, where the water injection ratio is: in unit time, the mass ratio of the water delivery amount of the water injection well to the oil production well to the total water injection amount of the water injection well;
a contribution rate obtaining module 603, configured to calculate, based on the oil production ratio between each water injection well and the adjacent oil production well and the water injection ratio between each water injection well and the adjacent oil production well, a contribution rate of each water injection well to the adjacent oil production well by using the following formula:
in the formula: e-contribution rate of water injection well m to oil production well n, dimensionless, OmnProduction ratio between water injection well m and production well n, dimensionless, WmnThe water injection proportion between the water injection well m and the oil production well n is zero;
and a control module 604, configured to control the flow field of the target oil reservoir based on a contribution rate of each water injection well to an adjacent oil production well.
In one possible implementation, the regulation module 604 is configured to:
and adjusting the water injection amount of the water injection well of which the contribution rate is not in the preset threshold range so as to enable the adjusted contribution rate to be in the preset threshold range.
In one possible implementation, the regulation module 604 is further configured to:
and adjusting the liquid production amount of the oil production well of which the contribution rate is not in the preset threshold range so that the adjusted contribution rate is in the preset threshold range.
In one possible implementation, the preset threshold range is 0.95-1.13.
In one possible implementation, the water injection wells and the production wells in the target reservoir are arranged alternately, with each water injection well injecting water into an adjacent production well.
It should be noted that: when the oil reservoir flow field control device provided by the above embodiment performs oil reservoir flow field control, only the division of each functional module is used for illustration, and in practical application, the function distribution can be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules, so as to complete all or part of the functions described above. In addition, the oil reservoir flow field regulation and control device provided by the embodiment and the oil reservoir flow field regulation and control method embodiment belong to the same concept, and the specific implementation process is detailed in the method embodiment and is not described again.
According to the device provided by the embodiment of the invention, the contribution rate of each water injection well to the adjacent oil production well is obtained by obtaining the oil production proportion and the water injection proportion between each water injection well and the adjacent oil production well in the target oil deposit, and the contribution rate between each water injection well and the adjacent oil production well is adjusted to be within the preset interval, so that the contribution rate between each water injection well and the adjacent oil production well in the oil deposit is more balanced, the balanced displacement can be realized, and the oil production efficiency is effectively improved.
Fig. 7 is a schematic structural diagram of a computer device 700 according to an embodiment of the present invention, where the computer device 700 may generate a relatively large difference due to different configurations or performances, and may include one or more processors (CPUs) 701 and one or more memories 702, where the memory 702 stores at least one instruction, and the at least one instruction is loaded and executed by the processor 701 to implement the methods provided in the above respective reservoir flow field control method embodiments. Certainly, the computer device may further have components such as a wired or wireless network interface, a keyboard, and an input/output interface, so as to perform input and output, and the computer device may further include other components for implementing the functions of the device, which is not described herein again.
In an exemplary embodiment, a computer-readable storage medium, such as a memory, including instructions executable by a processor in a computer device to perform the reservoir flow field regulation method of the above embodiments is also provided. For example, the computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a Compact Disc Read-Only Memory (CD-ROM), a magnetic tape, a floppy disk, an optical data storage device, and the like.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, and the program may be stored in a computer-readable storage medium, and the storage medium may be a read-only memory, a magnetic disk or an optical disk.
The above description is only exemplary of the present invention and should not be taken as limiting the invention, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method for regulating a reservoir flow field is characterized by comprising the following steps:
Obtaining the oil extraction ratio between each water injection well and the adjacent oil production well in the target oil reservoir, wherein the oil extraction ratio is as follows: in unit time, the mass ratio of the contribution of the water injection well to the oil production of the oil production well;
acquiring the water injection proportion between each water injection well and the adjacent oil production well in the target oil reservoir, wherein the water injection proportion is as follows: in unit time, the mass ratio of the water delivery amount of the water injection well to the oil production well to the total water injection amount of the water injection well;
calculating the contribution rate of each water injection well to the adjacent oil production well by using the following formula based on the oil production ratio between each water injection well and the adjacent oil production well and the water injection ratio between each water injection well and the adjacent oil production well:
in the formula: e-contribution rate of water injection well m to oil production well n, dimensionless, OmnProduction ratio between water injection well m and production well n, dimensionless, WmnThe water injection proportion between the water injection well m and the oil production well n is zero;
and regulating and controlling the flow field of the target oil reservoir based on the contribution rate of each water injection well to the adjacent oil production well.
2. The reservoir flow field regulation method of claim 1, wherein the regulating the flow field of the target reservoir based on the contribution rate of each water injection well to an adjacent production well comprises:
And adjusting the water injection amount of the water injection well of which the contribution rate is not in the preset threshold range so as to enable the adjusted contribution rate to be in the preset threshold range.
3. The reservoir flow field conditioning method of claim 2, further comprising:
and adjusting the liquid production amount of the oil production well of which the contribution rate is not in the preset threshold range so as to ensure that the adjusted contribution rate is in the preset threshold range.
4. The reservoir flow field regulation method of claim 2, wherein the predetermined threshold range is 0.95-1.13.
5. The reservoir flow field conditioning method of claim 1, wherein water injection wells and production wells alternate within the target reservoir, each water injection well injecting water into an adjacent production well.
6. A reservoir flow field regulation device, characterized in that, reservoir flow field regulation device includes:
the oil extraction proportion acquisition module is used for acquiring the oil extraction proportion between each water injection well and the adjacent oil extraction well in the target oil reservoir, and the oil extraction proportion is as follows: in unit time, the mass ratio of the contribution of the water injection well to the oil production of the oil production well;
The water injection proportion acquisition module is used for acquiring the water injection proportion between each water injection well and the adjacent oil production well in the target oil reservoir, and the water injection proportion is as follows: in unit time, the mass ratio of the water delivery amount of the water injection well to the oil production well to the total water injection amount of the water injection well;
and the contribution rate acquisition module is used for calculating the contribution rate of each water injection well to the adjacent oil production well by using the following formula based on the oil production ratio between each water injection well and the adjacent oil production well and the water injection ratio between each water injection well and the adjacent oil production well:
in the formula: e-contribution rate of water injection well m to oil production well n, dimensionless, OmnProduction ratio between water injection well m and production well n, dimensionless, WmnThe water injection proportion between the water injection well m and the oil production well n is zero;
and the regulation and control module is used for regulating and controlling the flow field of the target oil reservoir based on the contribution rate of each water injection well to the adjacent oil production well.
7. The reservoir flow field regulation device of claim 6, wherein the regulation module is configured to:
and adjusting the water injection amount of the water injection well of which the contribution rate is not in the preset threshold range so as to enable the adjusted contribution rate to be in the preset threshold range.
8. The reservoir flow field regulation device of claim 7, wherein the regulation module is further configured to:
and adjusting the liquid production amount of the oil production well of which the contribution rate is not in the preset threshold range so as to ensure that the adjusted contribution rate is in the preset threshold range.
9. The reservoir flow field regulation device of claim 7, wherein the predetermined threshold range is 0.95-1.13.
10. A reservoir flow field conditioning device as claimed in claim 6, wherein the water injection wells and the production wells in the target reservoir are arranged alternately, each water injection well injecting water into an adjacent production well.
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