CN110965969A - Method and device for determining chemical measures of water injection well - Google Patents
Method and device for determining chemical measures of water injection well Download PDFInfo
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- CN110965969A CN110965969A CN201811139187.8A CN201811139187A CN110965969A CN 110965969 A CN110965969 A CN 110965969A CN 201811139187 A CN201811139187 A CN 201811139187A CN 110965969 A CN110965969 A CN 110965969A
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- 238000002347 injection Methods 0.000 title claims abstract description 595
- 239000007924 injection Substances 0.000 title claims abstract description 595
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 584
- 239000000126 substance Substances 0.000 title claims abstract description 158
- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000004519 manufacturing process Methods 0.000 claims abstract description 109
- 230000001960 triggered effect Effects 0.000 claims description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 6
- 230000006870 function Effects 0.000 description 11
- 238000004590 computer program Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 6
- 239000012530 fluid Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
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- 238000011084 recovery Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010801 machine learning Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000012190 activator Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000009736 wetting Methods 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
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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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
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Abstract
The invention discloses a method and a device for determining chemical measures of a water injection well, which can cluster a plurality of water injection wells including a target water injection well according to production parameters of the water injection well to obtain at least one water injection well cluster, determine at least one cluster water injection well of which the clustering distance from the target water injection well meets the requirement of a preset clustering distance, and obtain the chemical measures to be taken by the target water injection well from the historical chemical measures according to the yield increase of a beneficial oil production well of the at least one cluster water injection well under the historical chemical measures of the at least one cluster water injection well. The chemical measure corresponding to the maximum yield increase can be determined as the chemical measure of the target water injection well, and the chemical measure brings the maximum yield increase to the beneficial oil production well of the water injection well with the height similar to that of the target water injection well, so that the chemical measure can bring the maximum yield increase to the beneficial oil production well of the target water injection well, and the oil exploitation effect of water injection development can be improved to the maximum extent.
Description
Technical Field
The invention relates to the technical field of oil and gas exploitation, in particular to a method and a device for determining chemical measures of a water injection well.
Background
Due to the influence of problems such as oil layer difference, wetting phenomena of petroleum and rock surfaces and the like, water injection development of oil fields often cannot achieve a good petroleum exploitation effect. In such cases, oilfield production managers often choose to apply certain chemical measures in the injection well to enhance the oil recovery from the water injection development.
The types of chemical measures that can be applied in a water injection well are various, such as: injecting polyacrylamide, gel chemical agents or foam water plugging agents; the following steps are repeated: injecting a gas such as an expression activator and carbon dioxide. The beneficial oil production wells have different oil increases after different types of chemical measures are applied to different water injection wells.
The chemical measures selected in the prior art are often influenced by the experience of oil field production management personnel, and the oil exploitation effect of water injection development cannot be better improved.
Disclosure of Invention
In view of the above, the present invention provides a method and apparatus for determining chemical measures for a water injection well that overcomes or at least partially solves the above problems, by:
a method of determining chemical actions for a water injection well, comprising:
clustering a plurality of water injection wells including a target water injection well according to production parameters of the water injection wells to obtain at least one water injection well cluster, wherein the plurality of water injection wells meet preset geological requirements;
determining at least one in-cluster water injection well of which the clustering distance with the target water injection well meets the requirement of a preset clustering distance, wherein the at least one in-cluster water injection well and the target water injection well are positioned in the same water injection well cluster;
and obtaining the chemical measures to be taken by the target water injection well from the historical chemical measures according to the yield increase of the benefited oil production well of the at least one cluster water injection well under the historical chemical measures of the at least one cluster water injection well.
Optionally, the preset geological requirement is any one of the following three requirements:
the multiple water injection wells are located in the same reservoir block;
the oil reservoir block where each water injection well of the multiple water injection wells is located in the same oil reservoir block cluster obtained through clustering according to geological parameters;
the multiple water injection wells are located in the same oil reservoir block, or the oil reservoir block where each water injection well is located in the multiple water injection wells is located in the same oil reservoir block cluster obtained through clustering according to geological parameters.
Optionally, the clustering a plurality of water injection wells including a target water injection well according to the production parameters of the water injection well to obtain at least one water injection well cluster includes:
determining whether the number of water injection wells which have undergone historical chemical measures in an oil reservoir block in which a target water injection well is located is not lower than a preset number, and if so, clustering a plurality of water injection wells including the target water injection well and the water injection wells of the preset types according to production parameters of the water injection wells to obtain at least one water injection well cluster;
otherwise, clustering a plurality of oil reservoir blocks according to geological parameters to obtain at least one oil reservoir block cluster, determining the oil reservoir block closest to the clustering distance of the oil reservoir block where the target water injection well is located, clustering a plurality of water injection wells including the target water injection well and the water injection well in the closest oil reservoir block according to water injection well production parameters to obtain at least one water injection well cluster, wherein the oil reservoir blocks comprise the oil reservoir block where the target water injection well is located, and the closest oil reservoir block and the oil reservoir block where the target water injection well is located are located in the same oil reservoir block cluster.
Optionally, the obtaining, according to the yield increase of the benefited oil production well of the at least one cluster water injection well under each historical chemical measure of the at least one cluster water injection well, a chemical measure to be taken by the target water injection well from each historical chemical measure includes:
to any cluster of interior injection wells of said at least one cluster of interior injection wells: obtaining historical chemical measures of the cluster of water injection wells and yield increase of the benefited oil production wells of the cluster of water injection wells under the historical chemical measures;
and outputting the chemical measure corresponding to the maximum yield increase as the chemical measure to be taken by the target water injection well.
Optionally, the water injection well production parameters include: water injection well production horizon information and/or water injection quantity.
An apparatus for determining chemical measures for a water injection well, comprising: a water injection well clustering unit, a water injection well determining unit and a measure determining unit,
the water injection well clustering unit is used for clustering a plurality of water injection wells including a target water injection well according to the production parameters of the water injection wells to obtain at least one water injection well cluster, and the plurality of water injection wells meet the preset geological requirements;
the water injection well determining unit is used for determining at least one cluster of water injection wells, the clustering distance between the target water injection well and the at least one cluster of water injection wells meets the requirement of preset clustering distance, and the at least one cluster of water injection wells and the target water injection well are positioned in the same water injection well cluster;
and the measure determining unit is used for obtaining the chemical measures to be taken by the target water injection well from the historical chemical measures according to the yield increase of the benefited oil production well of the at least one cluster water injection well under the historical chemical measures of the at least one cluster water injection well.
Optionally, the preset geological requirement is any one of the following three requirements:
the multiple water injection wells are located in the same reservoir block;
the oil reservoir block where each water injection well of the multiple water injection wells is located in the same oil reservoir block cluster obtained through clustering according to geological parameters;
the multiple water injection wells are located in the same oil reservoir block, or the oil reservoir block where each water injection well is located in the multiple water injection wells is located in the same oil reservoir block cluster obtained through clustering according to geological parameters.
Optionally, the water injection well clustering unit includes: a number determination subunit, a first clustering subunit and a second clustering subunit,
the quantity determining subunit is used for determining whether the quantity of the water injection wells which have undergone the historical chemical measures in the oil reservoir block where the target water injection well is located is not lower than a preset quantity, if so, the first clustering subunit is triggered, and otherwise, the second clustering subunit is triggered;
the first clustering subunit is used for clustering a plurality of water injection wells including the target water injection well and the preset type water injection well according to the production parameters of the water injection wells to obtain at least one water injection well cluster;
the second clustering subunit is configured to cluster the plurality of reservoir blocks according to geological parameters to obtain at least one reservoir block cluster, determine a reservoir block closest to a clustering distance of the reservoir block where the target water injection well is located, and cluster the plurality of water injection wells including the target water injection well and the water injection well in the closest reservoir block according to water injection well production parameters to obtain at least one water injection well cluster, where the plurality of reservoir blocks include the reservoir block where the target water injection well is located, and the closest reservoir block and the reservoir block where the target water injection well is located are located in the same reservoir block cluster.
Optionally, the measure determining unit includes: a yield obtaining subunit and a measure outputting subunit,
the yield obtaining subunit is used for performing cluster water injection well treatment on any one of the at least one cluster water injection well: obtaining historical chemical measures of the cluster of water injection wells and yield increase of the benefited oil production wells of the cluster of water injection wells under the historical chemical measures;
and the measure output subunit is used for outputting the chemical measure corresponding to the maximum yield increase as the chemical measure to be taken by the target water injection well.
A storage medium comprising a stored program, wherein the program, when executed, controls a device in which the storage medium is located to perform any of the above-described methods of determining a chemical measure for a water injection well.
A processor for running a program, wherein the program when run performs any of the above-described method of determining a water injection well chemical measure.
By means of the technical scheme, the method and the device for determining the chemical measures of the water injection well can cluster a plurality of water injection wells including a target water injection well according to production parameters of the water injection well to obtain at least one water injection well cluster, determine at least one in-cluster water injection well of which the clustering distance from the target water injection well meets the requirement of a preset clustering distance, wherein the at least one in-cluster water injection well and the target water injection well are located in the same water injection well cluster, and obtain the chemical measures to be taken by the target water injection well from the historical chemical measures according to the yield increase of the benefited oil production well of the at least one in-cluster water injection well under the historical chemical measures. The chemical measure corresponding to the maximum yield increase can be determined as the chemical measure of the target water injection well, and the chemical measure brings the maximum yield increase to the beneficial oil production well of the water injection well with the height similar to that of the target water injection well, so that the chemical measure can bring the maximum yield increase to the beneficial oil production well of the target water injection well, and the oil exploitation effect of water injection development can be improved to the maximum extent.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a flow chart illustrating a method for determining chemical measures for a water injection well according to an embodiment of the present invention;
FIG. 2 is a flow chart of another method for determining chemical measures for a water injection well according to an embodiment of the present invention;
FIG. 3 is a flow chart of another method for determining chemical measures for a water injection well according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a water injection well chemical measure determination device according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
As shown in fig. 1, a method for determining chemical measures of a water injection well according to an embodiment of the present invention may include:
s100, clustering a plurality of water injection wells including a target water injection well according to production parameters of the water injection wells to obtain at least one water injection well cluster, wherein the plurality of water injection wells meet preset geological requirements;
wherein the water injection well production parameters may include: water injection well production horizon information and/or water injection quantity. Specifically, the water injection well production level information is the information of the oil reservoir level that the water injection well injected when injecting water, and the water injection well production level information may include: at least one of depth, thickness, porosity, permeability, shale content, wettability, sensitivity of a production horizon of the water injection well. Specifically, the water injection amount may be a water injection amount per unit time, for example: monthly water injection amount or monthly average water injection amount. Wherein, the monthly average water injection amount is the average value of the monthly water injection amount.
Clustering is the process of dividing a collection of physical or abstract objects into classes composed of similar objects, which can generate clusters. The cluster generated by clustering is a collection of a set of data objects that are similar to objects in the same cluster and distinct from objects in other clusters. After the water injection wells are clustered, the water injection well cluster can be obtained and can comprise at least one water injection well, the water injection wells in the same water injection well cluster are similar, and the difference between the water injection wells in different water injection well clusters is larger.
It is understood that in any water injection well cluster obtained by clustering the production parameters of the water injection well: production parameters of the water injection wells in the water injection well cluster are relatively similar.
Wherein the target water injection well may be a water injection well that requires chemical measures to improve the oil production.
Optionally, an algorithm adopted for clustering in the embodiment of the present invention may be: an unsupervised machine learning K-means (K-means) algorithm is used. The K-means algorithm is a typical target function clustering method based on a prototype, a certain distance between a data point and the prototype is used as an optimized target function, and an adjustment rule of iterative operation is obtained by using a function extremum solving method. Of course, it will be understood by those skilled in the art that there are many kinds of clustering algorithms, such as: a representative Density-Based Clustering algorithm (DBSCAN), the algorithm adopted for Clustering according to the embodiment of the present invention is not limited to the above-mentioned Clustering algorithm.
Optionally, the preset geological requirement may be any one of the following three requirements:
the first requirement is that: the multiple water injection wells are located in the same reservoir block;
the second requirement is that: the oil reservoir block where each water injection well of the multiple water injection wells is located in the same oil reservoir block cluster obtained through clustering according to geological parameters;
the third requirement is that: the multiple water injection wells are located in the same oil reservoir block, or the oil reservoir block where each water injection well is located in the multiple water injection wells is located in the same oil reservoir block cluster obtained through clustering according to geological parameters.
Wherein the reservoir block is a basic accumulation of oil with the same pressure system in a single trap. Similar to the water injection well clustering, the method can also cluster the oil reservoir blocks to obtain an oil reservoir block cluster, wherein the oil reservoir block cluster comprises at least one oil reservoir block, the oil reservoir blocks in the same oil reservoir block cluster are similar, and the oil reservoir blocks in different oil reservoir block clusters are different greatly.
Wherein the geological parameters may include: at least one of reservoir type, oil bearing area, average thickness of oil layer, oil-water relationship (edge water and bottom water), fluid properties. In particular, the fluid properties may include at least one of oil density, viscosity, volume factor.
Specifically, the reservoir types may include: sandstone-type reservoirs, carbonate-type reservoirs, low-viscosity reservoirs, high-viscosity reservoirs, and the like.
From the above three requirements, it can be seen that the geological parameters of the water injection wells meeting the preset geological requirements in the embodiments of the present invention are the same or similar. When the geological parameters of a certain water injection well are the same as or similar to those of the target water injection well and the production parameters of the certain water injection well are the same as or similar to those of the target water injection well, the certain water injection well and the target water injection well have high similarity, and the chemical measures of the water injection well can be taken as reference. According to the embodiment of the invention, the historical chemical measure corresponding to the maximum yield increase can be selected according to the yield increase brought by the historical chemical measures taken by each water injection well with high similarity to the target water injection well, and the historical chemical measure is taken as the optimal chemical measure to be taken by the target water injection well. Because the chemical measure brings the maximum yield increase for the beneficial oil production wells of the water injection wells with the height similar to that of the target water injection well, the chemical measure can also bring the maximum yield increase for the beneficial oil production wells of the target water injection well, the yield of the oil production wells can be improved to the maximum extent, and the oil production process is optimized.
It should be noted that the geological parameters of the water injection wells in the same reservoir block are generally the same or slightly different, so that the geological parameters in the same reservoir block can be used as the preset geological requirements.
The difference of the geological parameters of the water injection wells in each reservoir block in the reservoir block cluster obtained through the geological parameter clustering is small, so that the second requirement can be used as a preset address requirement.
As shown in fig. 2, step S100 may specifically include:
s110, determining whether the number of water injection wells which have undergone historical chemical measures in the oil reservoir block where the target water injection well is located is not less than a preset number, if so, executing a step S120, otherwise, executing a step S130;
when the number of water injection wells that have undergone historical chemical measures is small, the water injection wells that are in the same cluster as the target water injection well may not be clustered from among the water injection wells. In this case, water injection wells may be obtained from other reservoir zones and clustered with the target water injection well.
S120, clustering a plurality of water injection wells including the target water injection well and the preset type water injection well according to the production parameters of the water injection wells to obtain at least one water injection well cluster;
s130, clustering the plurality of oil reservoir blocks according to geological parameters to obtain at least one oil reservoir block cluster, determining the oil reservoir block closest to the clustering distance of the oil reservoir block where the target water injection well is located, clustering the plurality of water injection wells including the target water injection well and the water injection well in the closest oil reservoir block according to water injection well production parameters to obtain at least one water injection well cluster, wherein the plurality of oil reservoir blocks comprise the oil reservoir block where the target water injection well is located, and the closest oil reservoir block and the oil reservoir block where the target water injection well is located are located in the same oil reservoir block cluster.
S200, determining at least one in-cluster water injection well of which the clustering distance to the target water injection well meets the requirement of a preset clustering distance, wherein the at least one in-cluster water injection well and the target water injection well are positioned in the same water injection well cluster;
wherein, the preset clustering distance requirement may be: and determining cluster internal injection wells with preset number, wherein the determined clustering distance between each cluster of internal injection wells and the target water injection well is smaller than the clustering distance between the cluster of internal injection wells which are not determined in the water injection well cluster and the target water injection well. In other embodiments of the present invention, the preset clustering distance requirement may be: the clustering distance is smaller than the preset distance.
It is understood that in a water injection well cluster, the closer the cluster distance from the target water injection well, the closer the production parameters of the cluster water injection well and the target water injection well are.
According to the embodiment of the invention, the cluster internal injection well which is closer to the production parameters of the target water injection well is selected from the water injection well clusters, and the optimal chemical measures can be determined according to the water injection well which is closer to the production parameters, so that the accuracy of the determined chemical measures is higher.
S300, obtaining the chemical measures to be taken by the target water injection well from the historical chemical measures according to the yield increase of the benefited oil production well of the at least one cluster water injection well under the historical chemical measures of the at least one cluster water injection well.
As shown in fig. 3, step S300 may specifically include:
s310, injecting water into any cluster of the at least one cluster of water injection wells: obtaining historical chemical measures of the cluster of water injection wells and yield increase of the benefited oil production wells of the cluster of water injection wells under the historical chemical measures;
and S320, outputting the chemical measures corresponding to the maximum yield increase as the chemical measures to be taken by the target water injection well.
According to the method for determining the chemical measures of the water injection well, provided by the embodiment of the invention, a plurality of water injection wells including a target water injection well can be clustered according to production parameters of the water injection well to obtain at least one water injection well cluster, at least one cluster internal injection well of which the clustering distance with the target water injection well meets the requirement of a preset clustering distance is determined, the at least one cluster internal injection well and the target water injection well are positioned in the same water injection well cluster, and the chemical measures to be taken by the target water injection well are obtained from the historical chemical measures according to the yield increase of the beneficial oil recovery well of the at least one cluster internal injection well under the historical chemical measures of the at least one cluster internal injection well. Through the scheme, the embodiment of the invention can refer to the water injection wells with similar production parameters and geological parameters, and select the chemical measures to be taken by the target water injection well according to the yield increase of the water injection wells under various historical chemical measures. Therefore, the chemical measure corresponding to the maximum yield increase can be determined as the chemical measure of the target water injection well, and the chemical measure brings the maximum yield increase to the beneficial oil production well of the water injection well with the height similar to that of the target water injection well, so that the chemical measure can bring the maximum yield increase to the beneficial oil production well of the target water injection well, and the oil production effect of water injection development can be improved to the maximum extent.
Corresponding to the method embodiment, the embodiment of the invention provides a device for determining chemical measures of a water injection well.
As shown in fig. 4, an apparatus for determining chemical measures of a water injection well according to an embodiment of the present invention may include: a water injection well clustering unit 100, a water injection well determination unit 200 and a measure determination unit 300,
the water injection well clustering unit 100 is used for clustering a plurality of water injection wells including a target water injection well according to production parameters of the water injection wells to obtain at least one water injection well cluster, wherein the plurality of water injection wells meet preset geological requirements;
wherein the water injection well production parameters may include: water injection well production horizon information and/or water injection quantity. Specifically, the water injection well production level information is the information of the oil reservoir level that the water injection well injected when injecting water, and the water injection well production level information may include: at least one of depth, thickness, porosity, permeability, shale content, wettability, sensitivity of a production horizon of the water injection well. Specifically, the water injection amount may be a water injection amount per unit time, for example: monthly water injection amount or monthly average water injection amount. Wherein, the monthly average water injection amount is the average value of the monthly water injection amount.
Clustering is the process of dividing a collection of physical or abstract objects into classes composed of similar objects, which can generate clusters. The cluster generated by clustering is a collection of a set of data objects that are similar to objects in the same cluster and distinct from objects in other clusters. After the water injection wells are clustered, the water injection well cluster can be obtained and can comprise at least one water injection well, the water injection wells in the same water injection well cluster are similar, and the difference between the water injection wells in different water injection well clusters is larger.
It is understood that in any water injection well cluster obtained by clustering the production parameters of the water injection well: production parameters of the water injection wells in the water injection well cluster are relatively similar.
Wherein the target water injection well may be a water injection well that requires chemical measures to improve the oil production.
Optionally, an algorithm adopted for clustering in the embodiment of the present invention may be: an unsupervised machine learning K-means (K-means) algorithm is used. The K-means algorithm is a typical target function clustering method based on a prototype, a certain distance between a data point and the prototype is used as an optimized target function, and an adjustment rule of iterative operation is obtained by using a function extremum solving method. Of course, it will be understood by those skilled in the art that there are many kinds of clustering algorithms, such as: a representative Density-Based Clustering algorithm (DBSCAN), the algorithm adopted for Clustering according to the embodiment of the present invention is not limited to the above-mentioned Clustering algorithm.
Wherein, the preset geological requirement can be any one of the following three requirements:
the multiple water injection wells are located in the same reservoir block;
the oil reservoir block where each water injection well of the multiple water injection wells is located in the same oil reservoir block cluster obtained through clustering according to geological parameters;
the multiple water injection wells are located in the same oil reservoir block, or the oil reservoir block where each water injection well is located in the multiple water injection wells is located in the same oil reservoir block cluster obtained through clustering according to geological parameters.
Wherein the reservoir block is a basic accumulation of oil with the same pressure system in a single trap. Similar to the water injection well clustering, the method can also cluster the oil reservoir blocks to obtain an oil reservoir block cluster, wherein the oil reservoir block cluster comprises at least one oil reservoir block, the oil reservoir blocks in the same oil reservoir block cluster are similar, and the oil reservoir blocks in different oil reservoir block clusters are different greatly.
Wherein the geological parameters may include: at least one of reservoir type, oil bearing area, average thickness of oil layer, oil-water relationship (edge water and bottom water), fluid properties. In particular, the fluid properties may include at least one of oil density, viscosity, volume factor.
Specifically, the reservoir types may include: sandstone-type reservoirs, carbonate-type reservoirs, low-viscosity reservoirs, high-viscosity reservoirs, and the like.
From the above three requirements, it can be seen that the geological parameters of the water injection wells meeting the preset geological requirements in the embodiments of the present invention are the same or similar. When the geological parameters of a certain water injection well are the same as or similar to those of the target water injection well and the production parameters of the certain water injection well are the same as or similar to those of the target water injection well, the certain water injection well and the target water injection well have high similarity, and the chemical measures of the water injection well can be taken as reference. According to the embodiment of the invention, the historical chemical measure corresponding to the maximum yield increase can be selected according to the yield increase brought by the historical chemical measures taken by each water injection well with high similarity to the target water injection well, and the historical chemical measure is taken as the optimal chemical measure to be taken by the target water injection well. Because the chemical measure brings the maximum yield increase for the beneficial oil production wells of the water injection wells with the height similar to that of the target water injection well, the chemical measure can also bring the maximum yield increase for the beneficial oil production wells of the target water injection well, the yield of the oil production wells can be improved to the maximum extent, and the oil production process is optimized.
It should be noted that the geological parameters of the water injection wells in the same reservoir block are generally the same or slightly different, so that the geological parameters in the same reservoir block can be used as the preset geological requirements.
The difference of the geological parameters of the water injection wells in each reservoir block in the reservoir block cluster obtained through the geological parameter clustering is small, so that the second requirement can be used as a preset address requirement.
Optionally, the water injection well clustering unit 100 may include: a number determination subunit, a first clustering subunit and a second clustering subunit,
the quantity determining subunit is used for determining whether the quantity of the water injection wells which have undergone the historical chemical measures in the oil reservoir block where the target water injection well is located is not lower than a preset quantity, if so, the first clustering subunit is triggered, and otherwise, the second clustering subunit is triggered;
when the number of water injection wells that have undergone historical chemical measures is small, the water injection wells that are in the same cluster as the target water injection well may not be clustered from among the water injection wells. In this case, water injection wells may be obtained from other reservoir zones and clustered with the target water injection well.
The first clustering subunit is used for clustering a plurality of water injection wells including the target water injection well and the preset type water injection well according to the production parameters of the water injection wells to obtain at least one water injection well cluster;
the second clustering subunit is configured to cluster the plurality of reservoir blocks according to geological parameters to obtain at least one reservoir block cluster, determine a reservoir block closest to a clustering distance of the reservoir block where the target water injection well is located, and cluster the plurality of water injection wells including the target water injection well and the water injection well in the closest reservoir block according to water injection well production parameters to obtain at least one water injection well cluster, where the plurality of reservoir blocks include the reservoir block where the target water injection well is located, and the closest reservoir block and the reservoir block where the target water injection well is located are located in the same reservoir block cluster.
The water injection well determining unit 200 is configured to determine at least one in-cluster water injection well whose clustering distance from the target water injection well meets a preset clustering distance requirement, where the at least one in-cluster water injection well and the target water injection well are located in the same water injection well cluster;
wherein, the preset clustering distance requirement may be: and determining cluster internal injection wells with preset number, wherein the determined clustering distance between each cluster of internal injection wells and the target water injection well is smaller than the clustering distance between the cluster of internal injection wells which are not determined in the water injection well cluster and the target water injection well. In other embodiments of the present invention, the preset clustering distance requirement may be: the clustering distance is smaller than the preset distance.
It is understood that in a water injection well cluster, the closer the cluster distance from the target water injection well, the closer the production parameters of the cluster water injection well and the target water injection well are.
According to the embodiment of the invention, the cluster internal injection well which is closer to the production parameters of the target water injection well is selected from the water injection well clusters, and the optimal chemical measures can be determined according to the water injection well which is closer to the production parameters, so that the accuracy of the determined chemical measures is higher.
The measure determining unit 300 is configured to obtain, from each historical chemical measure, a chemical measure to be taken by the target water injection well according to the yield increase of the benefited oil production well of the at least one cluster water injection well under each historical chemical measure of the at least one cluster water injection well.
The measure determining unit 300 may specifically include: a yield obtaining subunit and a measure outputting subunit,
the yield obtaining subunit is used for performing cluster water injection well treatment on any one of the at least one cluster water injection well: obtaining historical chemical measures of the cluster of water injection wells and yield increase of the benefited oil production wells of the cluster of water injection wells under the historical chemical measures;
and the measure output subunit is used for outputting the chemical measure corresponding to the maximum yield increase as the chemical measure to be taken by the target water injection well.
The device for determining the chemical measures of the water injection well, provided by the embodiment of the invention, can cluster a plurality of water injection wells including a target water injection well according to production parameters of the water injection well to obtain at least one water injection well cluster, and determine at least one cluster water injection well of which the clustering distance from the target water injection well meets the requirement of a preset clustering distance, wherein the at least one cluster water injection well and the target water injection well are positioned in the same water injection well cluster, and the chemical measures to be taken by the target water injection well are obtained from the historical chemical measures according to the yield increase of the beneficial oil recovery well of the at least one cluster water injection well under the historical chemical measures of the at least one cluster water injection well. Through the scheme, the embodiment of the invention can refer to the water injection wells with similar production parameters and geological parameters, and select the chemical measures to be taken by the target water injection well according to the yield increase of the water injection wells under various historical chemical measures. Therefore, the chemical measure corresponding to the maximum yield increase can be determined as the chemical measure of the target water injection well, and the chemical measure brings the maximum yield increase to the beneficial oil production well of the water injection well with the height similar to that of the target water injection well, so that the chemical measure can bring the maximum yield increase to the beneficial oil production well of the target water injection well, and the oil production effect of water injection development can be improved to the maximum extent.
The water injection well chemical measure determining device comprises a processor and a memory, wherein an upper water injection well clustering unit, a water injection well determining unit, a measure determining unit and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.
The processor comprises a kernel, and the kernel calls the corresponding program unit from the memory. The kernel can be set to one or more than one, and the chemical measures are determined by adjusting the parameters of the kernel.
The memory may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip.
An embodiment of the present invention provides a storage medium having a program stored thereon, which when executed by a processor, implements the method for determining a chemical measure for a water injection well.
The embodiment of the invention provides a processor, which is used for running a program, wherein the program is used for executing the method for determining the chemical measures of the water injection well during running.
The embodiment of the invention provides equipment, which comprises a processor, a memory and a program which is stored on the memory and can run on the processor, wherein the processor executes the program and realizes the following steps:
a method of determining chemical actions for a water injection well, comprising:
clustering a plurality of water injection wells including a target water injection well according to production parameters of the water injection wells to obtain at least one water injection well cluster, wherein the plurality of water injection wells meet preset geological requirements;
determining at least one in-cluster water injection well of which the clustering distance with the target water injection well meets the requirement of a preset clustering distance, wherein the at least one in-cluster water injection well and the target water injection well are positioned in the same water injection well cluster;
and obtaining the chemical measures to be taken by the target water injection well from the historical chemical measures according to the yield increase of the benefited oil production well of the at least one cluster water injection well under the historical chemical measures of the at least one cluster water injection well.
Optionally, the preset geological requirement is any one of the following three requirements:
the multiple water injection wells are located in the same reservoir block;
the oil reservoir block where each water injection well of the multiple water injection wells is located in the same oil reservoir block cluster obtained through clustering according to geological parameters;
the multiple water injection wells are located in the same oil reservoir block, or the oil reservoir block where each water injection well is located in the multiple water injection wells is located in the same oil reservoir block cluster obtained through clustering according to geological parameters.
Optionally, the clustering a plurality of water injection wells including a target water injection well according to the production parameters of the water injection well to obtain at least one water injection well cluster includes:
determining whether the number of water injection wells which have undergone historical chemical measures in an oil reservoir block in which a target water injection well is located is not lower than a preset number, and if so, clustering a plurality of water injection wells including the target water injection well and the water injection wells of the preset types according to production parameters of the water injection wells to obtain at least one water injection well cluster;
otherwise, clustering a plurality of oil reservoir blocks according to geological parameters to obtain at least one oil reservoir block cluster, determining the oil reservoir block closest to the clustering distance of the oil reservoir block where the target water injection well is located, clustering a plurality of water injection wells including the target water injection well and the water injection well in the closest oil reservoir block according to water injection well production parameters to obtain at least one water injection well cluster, wherein the oil reservoir blocks comprise the oil reservoir block where the target water injection well is located, and the closest oil reservoir block and the oil reservoir block where the target water injection well is located are located in the same oil reservoir block cluster.
Optionally, the obtaining, according to the yield increase of the benefited oil production well of the at least one cluster water injection well under each historical chemical measure of the at least one cluster water injection well, a chemical measure to be taken by the target water injection well from each historical chemical measure includes:
to any cluster of interior injection wells of said at least one cluster of interior injection wells: obtaining historical chemical measures of the cluster of water injection wells and yield increase of the benefited oil production wells of the cluster of water injection wells under the historical chemical measures;
and outputting the chemical measure corresponding to the maximum yield increase as the chemical measure to be taken by the target water injection well.
Optionally, the water injection well production parameters include: water injection well production horizon information and/or water injection quantity.
The device herein may be a server, a PC, a PAD, a mobile phone, etc.
The present application further provides a computer program product adapted to perform a program for initializing the following method steps when executed on a data processing device:
a method of determining chemical actions for a water injection well, comprising:
clustering a plurality of water injection wells including a target water injection well according to production parameters of the water injection wells to obtain at least one water injection well cluster, wherein the plurality of water injection wells meet preset geological requirements;
determining at least one in-cluster water injection well of which the clustering distance with the target water injection well meets the requirement of a preset clustering distance, wherein the at least one in-cluster water injection well and the target water injection well are positioned in the same water injection well cluster;
and obtaining the chemical measures to be taken by the target water injection well from the historical chemical measures according to the yield increase of the benefited oil production well of the at least one cluster water injection well under the historical chemical measures of the at least one cluster water injection well.
Optionally, the preset geological requirement is any one of the following three requirements:
the multiple water injection wells are located in the same reservoir block;
the oil reservoir block where each water injection well of the multiple water injection wells is located in the same oil reservoir block cluster obtained through clustering according to geological parameters;
the multiple water injection wells are located in the same oil reservoir block, or the oil reservoir block where each water injection well is located in the multiple water injection wells is located in the same oil reservoir block cluster obtained through clustering according to geological parameters.
Optionally, the clustering a plurality of water injection wells including a target water injection well according to the production parameters of the water injection well to obtain at least one water injection well cluster includes:
determining whether the number of water injection wells which have undergone historical chemical measures in an oil reservoir block in which a target water injection well is located is not lower than a preset number, and if so, clustering a plurality of water injection wells including the target water injection well and the water injection wells of the preset types according to production parameters of the water injection wells to obtain at least one water injection well cluster;
otherwise, clustering a plurality of oil reservoir blocks according to geological parameters to obtain at least one oil reservoir block cluster, determining the oil reservoir block closest to the clustering distance of the oil reservoir block where the target water injection well is located, clustering a plurality of water injection wells including the target water injection well and the water injection well in the closest oil reservoir block according to water injection well production parameters to obtain at least one water injection well cluster, wherein the oil reservoir blocks comprise the oil reservoir block where the target water injection well is located, and the closest oil reservoir block and the oil reservoir block where the target water injection well is located are located in the same oil reservoir block cluster.
Optionally, the obtaining, according to the yield increase of the benefited oil production well of the at least one cluster water injection well under each historical chemical measure of the at least one cluster water injection well, a chemical measure to be taken by the target water injection well from each historical chemical measure includes:
to any cluster of interior injection wells of said at least one cluster of interior injection wells: obtaining historical chemical measures of the cluster of water injection wells and yield increase of the benefited oil production wells of the cluster of water injection wells under the historical chemical measures;
and outputting the chemical measure corresponding to the maximum yield increase as the chemical measure to be taken by the target water injection well.
Optionally, the water injection well production parameters include: water injection well production horizon information and/or water injection quantity.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). The memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A method for determining chemical measures for a water injection well, comprising:
clustering a plurality of water injection wells including a target water injection well according to production parameters of the water injection wells to obtain at least one water injection well cluster, wherein the plurality of water injection wells meet preset geological requirements;
determining at least one in-cluster water injection well of which the clustering distance with the target water injection well meets the requirement of a preset clustering distance, wherein the at least one in-cluster water injection well and the target water injection well are positioned in the same water injection well cluster;
and obtaining the chemical measures to be taken by the target water injection well from the historical chemical measures according to the yield increase of the benefited oil production well of the at least one cluster water injection well under the historical chemical measures of the at least one cluster water injection well.
2. The method of claim 1, wherein the predetermined geological requirement is any one of three requirements:
the multiple water injection wells are located in the same reservoir block;
the oil reservoir block where each water injection well of the multiple water injection wells is located in the same oil reservoir block cluster obtained through clustering according to geological parameters;
the multiple water injection wells are located in the same oil reservoir block, or the oil reservoir block where each water injection well is located in the multiple water injection wells is located in the same oil reservoir block cluster obtained through clustering according to geological parameters.
3. The method of claim 2, wherein clustering a plurality of water injection wells, including a target water injection well, according to water injection well production parameters, to obtain at least one water injection well cluster comprises:
determining whether the number of water injection wells which have undergone historical chemical measures in an oil reservoir block in which a target water injection well is located is not lower than a preset number, and if so, clustering a plurality of water injection wells including the target water injection well and the water injection wells of the preset types according to production parameters of the water injection wells to obtain at least one water injection well cluster;
otherwise, clustering a plurality of oil reservoir blocks according to geological parameters to obtain at least one oil reservoir block cluster, determining the oil reservoir block closest to the clustering distance of the oil reservoir block where the target water injection well is located, clustering a plurality of water injection wells including the target water injection well and the water injection well in the closest oil reservoir block according to water injection well production parameters to obtain at least one water injection well cluster, wherein the oil reservoir blocks comprise the oil reservoir block where the target water injection well is located, and the closest oil reservoir block and the oil reservoir block where the target water injection well is located are located in the same oil reservoir block cluster.
4. The method according to any one of claims 1 to 3, wherein the obtaining of the chemical measures to be taken by the target water injection well from the historical chemical measures according to the yield increase of the benefited oil production well of the at least one cluster water injection well under the historical chemical measures of the at least one cluster water injection well comprises:
to any cluster of interior injection wells of said at least one cluster of interior injection wells: obtaining historical chemical measures of the cluster of water injection wells and yield increase of the benefited oil production wells of the cluster of water injection wells under the historical chemical measures;
and outputting the chemical measure corresponding to the maximum yield increase as the chemical measure to be taken by the target water injection well.
5. The method of claim 1, wherein the water injection well production parameters comprise: water injection well production horizon information and/or water injection quantity.
6. A water injection well chemical determination device, comprising: a water injection well clustering unit, a water injection well determining unit and a measure determining unit,
the water injection well clustering unit is used for clustering a plurality of water injection wells including a target water injection well according to the production parameters of the water injection wells to obtain at least one water injection well cluster, and the plurality of water injection wells meet the preset geological requirements;
the water injection well determining unit is used for determining at least one cluster of water injection wells, the clustering distance between the target water injection well and the at least one cluster of water injection wells meets the requirement of preset clustering distance, and the at least one cluster of water injection wells and the target water injection well are positioned in the same water injection well cluster;
and the measure determining unit is used for obtaining the chemical measures to be taken by the target water injection well from the historical chemical measures according to the yield increase of the benefited oil production well of the at least one cluster water injection well under the historical chemical measures of the at least one cluster water injection well.
7. The apparatus of claim 6, wherein the predetermined geological requirement is any one of three requirements:
the multiple water injection wells are located in the same reservoir block;
the oil reservoir block where each water injection well of the multiple water injection wells is located in the same oil reservoir block cluster obtained through clustering according to geological parameters;
the multiple water injection wells are located in the same oil reservoir block, or the oil reservoir block where each water injection well is located in the multiple water injection wells is located in the same oil reservoir block cluster obtained through clustering according to geological parameters.
8. The apparatus of claim 7, wherein the water injection well clustering unit comprises: a number determination subunit, a first clustering subunit and a second clustering subunit,
the quantity determining subunit is used for determining whether the quantity of the water injection wells which have undergone the historical chemical measures in the oil reservoir block where the target water injection well is located is not lower than a preset quantity, if so, the first clustering subunit is triggered, and otherwise, the second clustering subunit is triggered;
the first clustering subunit is used for clustering a plurality of water injection wells including the target water injection well and the preset type water injection well according to the production parameters of the water injection wells to obtain at least one water injection well cluster;
the second clustering subunit is configured to cluster the plurality of reservoir blocks according to geological parameters to obtain at least one reservoir block cluster, determine a reservoir block closest to a clustering distance of the reservoir block where the target water injection well is located, and cluster the plurality of water injection wells including the target water injection well and the water injection well in the closest reservoir block according to water injection well production parameters to obtain at least one water injection well cluster, where the plurality of reservoir blocks include the reservoir block where the target water injection well is located, and the closest reservoir block and the reservoir block where the target water injection well is located are located in the same reservoir block cluster.
9. A storage medium, characterized in that the storage medium comprises a stored program, wherein the apparatus in which the storage medium is located is controlled to perform the method for determining a chemical measure for a water injection well according to any one of claims 1 to 5 when the program is run.
10. A processor for running a program, wherein the program is run to perform the method of water injection well chemistry determination of any one of claims 1 to 5.
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