CN113704951A - Method and device for establishing permeability model - Google Patents
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Abstract
The invention provides a method and a device for establishing a permeability model, wherein the method comprises the following steps: collecting the meter oil extraction index data of a research work area; coarsening the rice oil extraction index data to a geological structure model of a research work area; establishing a Miyajie oil extraction index model based on the geological structure model; and (3) establishing a permeability model by using logging interpretation permeability data of a research work area as hard data and a Mimi oil recovery index model as constraint data and adopting an attribute conversion constraint method. The invention can improve the precision of the permeability model, so that the permeability model is more approximate to the underground real condition.
Description
Technical Field
The invention relates to the technical field of geological modeling, in particular to a method and a device for establishing a permeability model.
Background
Along with the exploitation of oil reservoirs, the number of drilled wells is increased, the obtained oil reservoir information is more abundant, and an oil reservoir three-dimensional geological model needs to be continuously updated, wherein the oil reservoir three-dimensional geological model comprises a permeability model. Conventional techniques for establishing permeability models include: firstly, establishing a sedimentary facies model; secondly, a logging interpretation permeability curve is used as hard data, an existing porosity model is used as constraint data, and a permeability model is established in a classified mode according to sedimentary facies types; or according to the types of the sedimentary facies, establishing a functional relation between the porosity and the permeability in a classified manner, and then calculating to obtain a permeability model by utilizing the existing porosity model and the functional relation.
However, the above method has the following problems: since the porosity and permeability curves reflect the average near the wellbore, the interwell permeability distribution of the constructed permeability model is highly uncertain. The established permeability model is used for numerical simulation, and the condition that the numerical simulation result is not consistent with actual production data often occurs in the history fitting process. Therefore, the permeability model needs to be adjusted repeatedly until the numerical simulation result matches the actual production data. In the prior art, a large amount of working hours are consumed in the adjustment process, and the geological model has multiple solutions, so that the result has great uncertainty, and the working efficiency is greatly reduced.
It should be noted that the above background description is only for the convenience of clear and complete description of the technical solutions of the present application and for the understanding of those skilled in the art. Such solutions are not considered to be known to the person skilled in the art merely because they have been set forth in the background section of the present application.
Disclosure of Invention
The embodiment of the invention provides a method for establishing a permeability model, which is used for improving the precision of the permeability model and enabling the permeability model to be closer to the underground real situation, and comprises the following steps:
collecting the meter oil extraction index data of a research work area;
coarsening the rice oil extraction index data to a geological structure model of a research work area;
establishing a Miyajie oil extraction index model based on the geological structure model;
and (3) establishing a permeability model by using logging interpretation permeability data of a research work area as hard data and a Mimi oil recovery index model as constraint data and adopting an attribute conversion constraint method.
The embodiment of the invention also provides a device for establishing the permeability model, which is used for improving the precision of the permeability model and enabling the permeability model to be closer to the underground real situation, and the device comprises:
the data acquisition module is used for acquiring the rice oil recovery index data of a research work area;
the data coarsening module is used for coarsening the rice oil recovery index data to a geological structure model of the research work area;
the index model building module is used for building a Miyamo oil extraction index model based on the geological structure model;
and the permeability model establishing module is used for establishing a permeability model by taking the well logging interpreted permeability data of the research work area as hard data and taking the Mi oil recovery index model as constraint data and adopting an attribute conversion constraint method.
The embodiment of the present invention further provides a computer device, which includes a memory, a processor, and a computer program stored in the memory and capable of running on the processor, and when the processor executes the computer program, the method for establishing a permeability model is implemented.
An embodiment of the present invention further provides a computer-readable storage medium, which stores a computer program for executing the method for establishing a permeability model.
According to the embodiment of the invention, the rice oil recovery index data of a research work area is collected; coarsening the rice oil extraction index data to a geological structure model of a research work area; establishing a Miyajie oil extraction index model based on the geological structure model; and (3) establishing a permeability model by using logging interpretation permeability data of a research work area as hard data and a Mimi oil recovery index model as constraint data and adopting an attribute conversion constraint method. The established model can accurately reflect the permeability distribution condition in the oil drainage range, the permeability distribution condition is well matched with actual production data in the fitting process, the workload of later-stage model adjustment is reduced, and the working efficiency is further improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts. In the drawings:
FIG. 1 is a flow chart of a method of establishing a permeability model in an embodiment of the invention;
FIG. 2 is another flow chart of a method of establishing a permeability model according to an embodiment of the present invention;
FIG. 3 is a plot of consolidated meter index data in accordance with an embodiment of the present invention;
FIG. 4 is a block diagram of an apparatus for creating a permeability model according to an embodiment of the present invention;
FIG. 5 is a diagram of a computer device in an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The inventors have found that the mie index is approximately proportional to the permeability with an approximate differential production pressure for each well. Therefore, the meter oil extraction index can reflect the average value of the permeability in the drainage radius range, the meter oil extraction index is used as constraint data, and a more accurate permeability model can be obtained by adopting an attribute conversion constraint method.
Based on this, in the embodiment of the present invention, a method for establishing a permeability model is provided to improve the precision of the permeability model, so that the permeability model is more approximate to the underground real situation. Fig. 1 is a flowchart of a method for establishing a permeability model according to an embodiment of the present invention. As shown in fig. 1, a method for establishing a permeability model in an embodiment of the present invention may include:
103, establishing a Miyazai oil extraction index model based on the geological structure model;
and step 104, establishing a permeability model by using logging interpretation permeability data of a research work area as hard data and a Mi oil extraction index model as constraint data and adopting an attribute conversion constraint method.
As can be known from the flow shown in FIG. 1, the present invention collects the rice oil recovery index data of the research work area; coarsening the rice oil extraction index data to a geological structure model of a research work area; establishing a Miyajie oil extraction index model based on the geological structure model; and (3) establishing a permeability model by using logging interpretation permeability data of a research work area as hard data and a Mimi oil recovery index model as constraint data and adopting an attribute conversion constraint method. The established model can accurately reflect the permeability distribution condition in the oil drainage range, the permeability distribution condition is well matched with actual production data in the fitting process, the workload of later-stage model adjustment is reduced, and the working efficiency is further improved.
In specific implementation, the rice oil recovery index data of a research work area is collected firstly. In an embodiment, after acquiring the meter-to-oil-production index data of the research work area, the method may further include a step 201: and (4) sorting the meter oil extraction index data according to the initial depth of the perforation section, the termination depth of the perforation section and the depth interval of the perforation section. Fig. 2 is another flow chart of a method for establishing a permeability model according to an embodiment of the present invention, as shown in fig. 2. For the sake of simplicity, the same reference numerals are used for the same steps in fig. 2 as in fig. 1 and the description thereof is omitted. Wherein the depth interval may be, for example, 0.125 meters. Of course, one skilled in the art will readily appreciate that other depth interval values may be selected as desired. As shown in fig. 3, fig. 3 is a graph of the consolidated meter-oil-production index data in an embodiment of the present invention.
In specific implementation, after the rice oil recovery index data of a research work area are collected, the rice oil recovery index data are coarsened to a geological structure model of the research work area. In the embodiment, a research work area can be loaded in Petrel software, and the research work area comprises well data, a geological structure model and well logging interpretation permeability data; after the research work area is loaded, the collected meter oil extraction index data can be coarsened to a geological structure model of the research work area by using a 'Well log Upscaling' function in Petrel software.
In specific implementation, after the oil extraction index is coarsened, an oil extraction index model is established based on the geological structure model. In an embodiment, a Petrophysical modeling module in Petrel software can be adopted to establish a Mimex index model based on a geological structure model. In an embodiment, a sequential gaussian simulation method or a gaussian random equation simulation method may be used to build the mie index model based on the geologic structure model.
In specific implementation, after the meter oil extraction index model is obtained, the permeability model is established by taking the well logging interpretation permeability data of a research work area as hard data and the meter oil extraction index model as constraint data and adopting an attribute conversion constraint method. In the embodiment, a 'Petrophysical modeling' module in Petrel software can be adopted, logging interpretation permeability data of a research work area are used as hard data, a Mimi oil recovery index model is used as constraint data, and an attribute conversion constraint method is adopted to establish a permeability model. In the embodiment, a specific algorithm such as a cokriging algorithm can be adopted, the logging interpreted permeability data of a research work area is used as hard data, a Mitsui oil-production index model is used as constraint data, and an attribute conversion constraint method is adopted to establish the permeability model.
Based on the same inventive concept, the embodiment of the present invention further provides a device for establishing a permeability model, as described in the following embodiments. Because the principle of solving the problem of the device for establishing the permeability model is similar to that of the method for establishing the permeability model, the implementation of the device for establishing the permeability model can refer to the implementation of the method for establishing the permeability model, and repeated parts are not repeated. As used hereinafter, the term "module" may include a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.
Fig. 4 is a block diagram of a structure of an apparatus for establishing a permeability model according to an embodiment of the present invention, as shown in fig. 4, including:
the data acquisition module 401 is used for acquiring the rice oil recovery index data of a research work area;
a data coarsening module 402, configured to coarsen the mie index data to a geological structure model of the research work area;
an index model building module 403, configured to build a mie index model based on the geological structure model;
and a permeability model establishing module 404, configured to establish a permeability model by using the well logging interpretation permeability data of the research work area as hard data, using the mie index model as constraint data, and using an attribute conversion constraint method.
In one embodiment, the data acquisition module may be further configured to:
and (4) sorting the meter oil extraction index data according to the initial depth of the perforation section, the termination depth of the perforation section and the depth interval of the perforation section.
In one embodiment, the exponential model building module may be specifically configured to:
and establishing a Mie oil extraction index model based on the geological structure model by adopting a sequential Gaussian simulation method or a Gaussian random equation simulation method.
In one embodiment, the permeability model building module may be specifically configured to:
and (3) establishing a permeability model by adopting a cokriging algorithm, taking the logging interpretation permeability data of the research work area as hard data, taking a Mi oil extraction index model as constraint data and adopting an attribute conversion constraint method.
An embodiment of the present invention further provides a computer device, fig. 5 is a schematic diagram of the computer device in the embodiment of the present invention, the computer device is capable of implementing all steps in the method for establishing a permeability model in the embodiment, and the electronic device specifically includes the following contents:
a processor (processor)501, a memory (memory)502, a communication Interface (Communications Interface)503, and a bus 504;
the processor 501, the memory 502 and the communication interface 503 complete mutual communication through the bus 504; the communication interface 503 is used for implementing information transmission between related devices such as server-side devices, detection devices, and user-side devices;
the processor 501 is used to call the computer program in the memory 502, and the processor executes the computer program to implement all the steps of the method for establishing a permeability model in the above embodiments.
An embodiment of the present invention further provides a computer-readable storage medium, in which a computer program for executing the method for establishing a permeability model is stored.
In summary, in the embodiments of the present invention, the meter oil recovery index data of the research work area is collected; coarsening the rice oil extraction index data to a geological structure model of a research work area; establishing a Miyajie oil extraction index model based on the geological structure model; and (3) establishing a permeability model by using logging interpretation permeability data of a research work area as hard data and a Mimi oil recovery index model as constraint data and adopting an attribute conversion constraint method. The established model can accurately reflect the permeability distribution condition in the oil drainage range, the permeability distribution condition is well matched with actual production data in the fitting process, the workload of later-stage model adjustment is reduced, and the working efficiency is further improved.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. 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.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the embodiment of the present invention by those skilled in the art. 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 of modeling permeability, comprising:
collecting the meter oil extraction index data of a research work area;
coarsening the rice oil extraction index data to a geological structure model of a research work area;
establishing a Miyajie oil extraction index model based on the geological structure model;
and (3) establishing a permeability model by using logging interpretation permeability data of a research work area as hard data and a Mimi oil recovery index model as constraint data and adopting an attribute conversion constraint method.
2. The method of claim 1, wherein after collecting the meter-index data for the research site, further comprising:
and (4) sorting the meter oil extraction index data according to the initial depth of the perforation section, the termination depth of the perforation section and the depth interval of the perforation section.
3. The method of claim 1, wherein building a mie index model based on the geological formation model comprises:
and establishing a Mie oil extraction index model based on the geological structure model by adopting a sequential Gaussian simulation method or a Gaussian random equation simulation method.
4. The method of claim 1, wherein the establishing the permeability model by using the log interpreted permeability data of the research work area as hard data and the Mie-Mie index model as constraint data and adopting an attribute transformation constraint method comprises:
and (3) establishing a permeability model by adopting a cokriging algorithm, taking the logging interpretation permeability data of the research work area as hard data, taking a Mi oil extraction index model as constraint data and adopting an attribute conversion constraint method.
5. An apparatus for modeling permeability, comprising:
the data acquisition module is used for acquiring the rice oil recovery index data of a research work area;
the data coarsening module is used for coarsening the rice oil recovery index data to a geological structure model of the research work area;
the index model building module is used for building a Miyamo oil extraction index model based on the geological structure model;
and the permeability model establishing module is used for establishing a permeability model by taking the well logging interpreted permeability data of the research work area as hard data and taking the Mi oil recovery index model as constraint data and adopting an attribute conversion constraint method.
6. The apparatus of claim 5, wherein the data acquisition module is further to:
and (4) sorting the meter oil extraction index data according to the initial depth of the perforation section, the termination depth of the perforation section and the depth interval of the perforation section.
7. The apparatus of claim 5, wherein the exponential model building module is specifically configured to:
and establishing a Mie oil extraction index model based on the geological structure model by adopting a sequential Gaussian simulation method or a Gaussian random equation simulation method.
8. The apparatus of claim 5, wherein the permeability model building module is specifically configured to:
and (3) establishing a permeability model by adopting a cokriging algorithm, taking the logging interpretation permeability data of the research work area as hard data, taking a Mi oil extraction index model as constraint data and adopting an attribute conversion constraint method.
9. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method of establishing a permeability model of any one of claims 1 to 4 when executing the computer program.
10. A computer-readable storage medium, characterized in that it stores a computer program for executing the method for creating a permeability model according to any one of claims 1 to 4.
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| CN104809277A (en) * | 2015-04-14 | 2015-07-29 | 中国石油天然气股份有限公司 | Geological modeling method for horizontal well of ultra-low permeability tight reservoir |
| CN106227957A (en) * | 2016-07-27 | 2016-12-14 | 长江大学 | The method of equivalent fissure modeling |
| CN107766689A (en) * | 2016-08-17 | 2018-03-06 | 中国石油化工股份有限公司 | The method for building up of the reservoir permeability time-varying model of development behavior constraint |
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