CN111985125A - Single sand body modeling method, system, equipment and readable storage medium - Google Patents
Single sand body modeling method, system, equipment and readable storage medium Download PDFInfo
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Abstract
The embodiment of the application discloses a single sand body modeling method, a system, equipment and a readable storage medium, wherein the method comprises the following steps: completing an initial modeling process, wherein the initial modeling process comprises fault modeling and skeleton mesh generation; establishing a sand layer system, wherein the sand layer system comprises a sand layer of which the internal structure meets set conditions; calling a top surface micro-structure and a sandstone thickness value line graph of a sand body according to the sand layer system, and establishing a sand body model of a three-dimensional space in a closed area of a sandstone pinch-out line and/or a reservoir area graph based on the range constraint of the sandstone pinch-out line and/or the reservoir area graph; and correcting the sand body model by using the well point data to enable the thickness of the sandstone at the boundary of the sandstone pinch-out line and the reservoir area diagram to be 0. And generating a single sand body model according with geological knowledge by utilizing the well data, the sand body top surface microstructure and the sandstone thickness map under the control constraint of a sand body boundary or a reservoir area map.
Description
Technical Field
The embodiment of the application relates to the technical field of reservoir fine description, in particular to a single sand body modeling method, a system, equipment and a readable storage medium.
Background
The single sand body modeling is a deterministic modeling method aiming at a single sand body at a small layer level, and a single sand body model unified with geological expert knowledge is quickly built by utilizing well stratification data, sand body top and bottom surface microstructures, sandstone thickness contour maps and other data through modeling.
In the existing modeling technology, single sand body modeling is carried out, the development range and the thickness trend of a restrained sand body cannot be controlled by using a sand body boundary and a reservoir area, and meanwhile, due to the lack of control constraint conditions, the thickness of a sand body pinch-out position is not 0 in modeling, and a sand body model conforming to a geological deposition rule cannot be made.
Disclosure of Invention
To this end, the embodiment of the application provides a single sand body modeling method, a system, equipment and a readable storage medium. And generating a single sand body model according with geological knowledge by utilizing the well data, the sand body top surface microstructure and the sandstone thickness map under the control constraint of a sand body boundary or a reservoir area map.
In order to achieve the above object, the embodiments of the present application provide the following technical solutions:
according to a first aspect of embodiments of the present application, there is provided a single sand body modeling method, the method comprising:
completing an initial modeling process, wherein the initial modeling process comprises fault modeling and skeleton mesh generation;
establishing a sand layer system, wherein the sand layer system comprises a sand layer of which the internal structure meets set conditions;
calling a top surface micro-structure and a sandstone thickness value line graph of a sand body according to the sand layer system, and establishing a sand body model of a three-dimensional space in a closed area of a sandstone pinch-out line and/or a reservoir area graph based on the range constraint of the sandstone pinch-out line and/or the reservoir area graph;
and correcting the sand body model by using the well point data to enable the thickness of the sandstone at the boundary of the sandstone pinch-out line and the reservoir area diagram to be 0.
Optionally, the correcting the sand model using the well point data includes:
based on sandstone top and bottom data of a single well, the sandstone pinch-out line and the boundary of the reservoir area diagram control the sandstone thickness to gradually decrease until the thickness is reduced to 0 at the boundary.
Optionally, when the sand layer system comprises an interlayer with an internal structure meeting set conditions, the method further comprises:
and calling a value line graph of the top surface microstructure and the thickness of the interlayer according to the sand layer system, and establishing an interlayer model under the constraint of a top-bottom interface of the sand body model.
Optionally, the method further comprises:
and combining the sand body model and the interlayer model into a sand body space distribution model so that the sand body space distribution model carries out conventional modeling, wherein the conventional modeling comprises vertical network subdivision, phase modeling, attribute modeling and model coarsening.
According to a second aspect of embodiments of the present application, there is provided a single sand body modeling system, the system comprising:
the initial modeling module is used for finishing an initial modeling process, and the initial modeling process comprises fault modeling and skeleton mesh generation;
the sand layer system building module is used for building a sand layer system, and the sand layer system comprises a sand layer of which the internal structure meets set conditions;
the sand body model establishing module is used for calling a top surface micro-structure and a sandstone thickness value line graph of a sand body according to the sand layer system, and establishing a sand body model of a three-dimensional space in a closed area of a sandstone pinch-out line and/or a reservoir area graph based on the range constraint of the sandstone pinch-out line and/or the reservoir area graph;
and the correction module is used for correcting the sand body model by using the well point data so that the thickness of the sandstone at the boundary of the sandstone pinch-out line and the reservoir area diagram is 0.
Optionally, the correction module is specifically configured to:
based on sandstone top and bottom data of a single well, the sandstone pinch-out line and the boundary of the reservoir area diagram control the sandstone thickness to gradually decrease until the thickness is reduced to 0 at the boundary.
Optionally, when the sand layer system includes an interlayer whose internal structure satisfies a set condition, the system further includes:
and the interlayer model establishing module is used for calling a value line graph of the top surface microstructure and the thickness of the interlayer according to the sand layer system and establishing an interlayer model under the constraint of a top-bottom interface of the sand body model.
Optionally, the system further comprises:
and the combined module is used for combining the sand body model and the interlayer model into a sand body space distribution model so as to enable the sand body space distribution model to carry out conventional modeling, and the conventional modeling comprises vertical network subdivision, phase modeling, attribute modeling and model coarsening.
According to a third aspect of embodiments herein, there is provided an apparatus comprising: the device comprises a data acquisition device, a processor and a memory; the data acquisition device is used for acquiring data; the memory is to store one or more program instructions; the processor is configured to execute one or more program instructions to perform the method of any of the first aspect.
According to a second aspect of embodiments herein, there is provided a computer-readable storage medium having one or more program instructions embodied therein for performing the method of any one of the first aspects.
In summary, the embodiment of the present application provides a method, a system, a device and a readable storage medium for single sand body modeling, which first complete an initial modeling process, where the initial modeling process includes fault modeling and skeleton mesh generation; establishing a sand layer system, wherein the sand layer system comprises a sand layer of which the internal structure meets set conditions; calling a top surface micro-structure and a sandstone thickness value line graph of a sand body according to the sand layer system, and establishing a sand body model of a three-dimensional space in a closed area of a sandstone pinch-out line and/or a reservoir area graph based on the range constraint of the sandstone pinch-out line and/or the reservoir area graph; and correcting the sand body model by using the well point data to enable the thickness of the sandstone at the boundary of the sandstone pinch-out line and the reservoir area diagram to be 0. And generating a single sand body model according with geological knowledge by utilizing the well data, the sand body top surface microstructure and the sandstone thickness map under the control constraint of a sand body boundary or a reservoir area map.
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. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope of the present invention.
FIG. 1 is a schematic flow chart of a single sand modeling method according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of an embodiment of single sand modeling provided by an embodiment of the present application;
FIG. 3 is a schematic view of an embodiment of a sand body model in a three-dimensional space provided in an embodiment of the present application;
FIG. 4 is a schematic calibration diagram provided in accordance with an embodiment of the present application;
FIG. 5 is a schematic view of an embodiment of a sandwich model provided in an embodiment of the present application;
fig. 6 is a block diagram of a single sand modeling system according to an embodiment of the present application.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. 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.
Fig. 1 shows a flow of a single sand body modeling method provided by an embodiment of the present application, which can build a single sand body model conforming to geological understanding. The method specifically comprises the following steps:
step 101: and finishing an initial modeling process, wherein the initial modeling process comprises fault modeling and skeleton mesh generation.
Step 102: and establishing a sand layer system, wherein the sand layer system comprises a sand layer of which the internal structure meets the set conditions.
Step 103: and calling a top surface micro-structure and a sandstone thickness value line graph of a sand body according to the sand layer system, and establishing a sand body model of a three-dimensional space in a closed region of the sandstone pinch-out line and/or the reservoir area graph based on the range constraint of the sandstone pinch-out line and/or the reservoir area graph.
Step 104: and correcting the sand body model by using the well point data to enable the thickness of the sandstone at the boundary of the sandstone pinch-out line and the reservoir area diagram to be 0.
In one possible embodiment, in step 104, the boundaries of the sandstone pinch-out line and the reservoir area map control the sandstone thickness to progressively decrease until the thickness decreases to 0 at the boundaries, based on the sandstone top and bottom data for a single well.
In a possible embodiment, when the sand layer system comprises an interlayer with an internal structure satisfying a set condition, the method further comprises: and calling a value line graph of the top surface microstructure and the thickness of the interlayer according to the sand layer system, and establishing an interlayer model under the constraint of a top-bottom interface of the sand body model.
In a possible implementation, after step 104, the method further comprises: and combining the sand body model and the interlayer model into a sand body space distribution model so that the sand body space distribution model carries out conventional modeling, wherein the conventional modeling comprises vertical network subdivision, phase modeling, attribute modeling and model coarsening.
After 2 steps of conventional fault modeling and skeleton mesh subdivision are completed, a working flow of single sand body modeling is started, and the method mainly comprises the following steps:
the invention will be further explained with reference to the modeling workflow of fig. 2, in which fig. 2:
step 1: and finishing the early-stage modeling work, including fault modeling, skeleton mesh subdivision and establishing the skeleton mesh of the model.
Step 2: and establishing a sand layer system, counting the sand layer system needing modeling, including an interlayer with clear description inside, and establishing the sand layer system.
And step 3: and (3) establishing a sand body model, calling a top surface microstructure and a sandstone thickness contour map of the sand body according to a sand layer system, and establishing the sand body model of a three-dimensional space under the range control constraint of a sandstone pinch-out line or a reservoir area map, as shown in the attached figure 3.
And 4, step 4: and generating a sand model in a closed region of the sandstone pinch-out line or the reservoir area diagram, controlling the sandstone thickness to gradually decrease on the boundary of the sandstone pinch-out line or the reservoir area diagram, and reducing the thickness to 0 m at the boundary, as shown in figure 4.
And 5: in the process of generating the sand body model, the top and bottom structure of the sand layer and the sandstone thickness data are corrected by using the sandstone top and bottom data of the single well, and the consistency with the data on the well is ensured.
Step 6: and (4) establishing an interlayer model, and if no interlayer exists, not modeling the interlayer. And calling the top surface microstructure and the thickness contour map of the interlayer according to the sand layer system, and establishing an interlayer model under the control constraint of a top-bottom interface of the sand body model, as shown in the attached figure 5.
And 7: the sand body model and the interlayer model in the previous step are combined into a sand body space distribution model, and then other works of conventional modeling can be carried out on the basis of the sand body space distribution model, including: vertical subdivision, phase modeling, attribute modeling, model coarsening and the like.
The embodiment of the application provides a single sand body modeling method, which can use a top surface microstructure and a sandstone thickness map of a sand body to restrict the distribution range of the sand body by using a pinch-out line or a reservoir area map under the control of well point sandstone top and bottom data, so as to quickly establish a single sand body model. At the boundary of the sandstone pinch-out line or the reservoir area diagram, the sandstone thickness gradually decreases towards the boundary, the thickness of the grid at the boundary is controlled to be reduced to 0 meter, and a sand body model conforming to the geological deposition rule is established. The interlayer with stable distribution provides a fine depicting function, and the interlayer can be simulated in a single sand body model.
In summary, the embodiment of the present application provides a method, a system, a device and a readable storage medium for single sand body modeling, which first complete an initial modeling process, where the initial modeling process includes fault modeling and skeleton mesh generation; establishing a sand layer system, wherein the sand layer system comprises a sand layer of which the internal structure meets set conditions; calling a top surface micro-structure and a sandstone thickness value line graph of a sand body according to the sand layer system, and establishing a sand body model of a three-dimensional space in a closed area of a sandstone pinch-out line and/or a reservoir area graph based on the range constraint of the sandstone pinch-out line and/or the reservoir area graph; and correcting the sand body model by using the well point data to enable the thickness of the sandstone at the boundary of the sandstone pinch-out line and the reservoir area diagram to be 0. And generating a single sand body model according with geological knowledge by utilizing the well data, the sand body top surface microstructure and the sandstone thickness map under the control constraint of a sand body boundary or a reservoir area map.
Based on the same technical concept, the embodiment of the present application further provides a single sand modeling system, as shown in fig. 6, the system includes:
the initial modeling module 601 is configured to complete an initial modeling process, where the initial modeling process includes fault modeling and skeleton mesh generation.
A sand layer system establishing module 602, configured to establish a sand layer system including a sand layer whose internal structure satisfies a set condition.
The sand body model establishing module 603 is configured to call a top surface micro-structure and a sandstone thickness value line graph of a sand body according to the sand layer system, and establish a sand body model in a three-dimensional space in a closed region of a sandstone pinch-out line and/or a reservoir area graph based on range constraints of the sandstone pinch-out line and/or the reservoir area graph.
And the correcting module 604 is configured to correct the sand body model by using the well point data, so that the thickness of the sandstone at the boundary between the sandstone pinch-out line and the reservoir area map is 0.
In a possible implementation, the correction module 604 is specifically configured to: based on sandstone top and bottom data of a single well, the sandstone pinch-out line and the boundary of the reservoir area diagram control the sandstone thickness to gradually decrease until the thickness is reduced to 0 at the boundary.
In a possible embodiment, when the sand layer system comprises an interlayer with an internal structure satisfying a set condition, the system further comprises: and the interlayer model establishing module is used for calling a value line graph of the top surface microstructure and the thickness of the interlayer according to the sand layer system and establishing an interlayer model under the constraint of a top-bottom interface of the sand body model.
In one possible embodiment, the system further comprises: and the combined module is used for combining the sand body model and the interlayer model into a sand body space distribution model so as to enable the sand body space distribution model to carry out conventional modeling, and the conventional modeling comprises vertical network subdivision, phase modeling, attribute modeling and model coarsening.
Based on the same technical concept, an embodiment of the present application further provides an apparatus, which is characterized by comprising: the device comprises a data acquisition device, a processor and a memory; the data acquisition device is used for acquiring data; the memory is to store one or more program instructions; the processor is configured to execute one or more program instructions to perform the method of any of the above.
Based on the same technical concept, the embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium contains one or more program instructions, and the one or more program instructions are used for executing the method according to any one of the above descriptions.
In the present specification, each embodiment of the method is described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. Reference is made to the description of the method embodiments.
It is noted that while the operations of the methods of the present invention are depicted in the drawings in a particular order, this is not a requirement or suggestion that the operations must be performed in this particular order or that all of the illustrated operations must be performed to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions.
Although the present application provides method steps as in embodiments or flowcharts, additional or fewer steps may be included based on conventional or non-inventive approaches. The order of steps recited in the embodiments is merely one manner of performing the steps in a multitude of orders and does not represent the only order of execution. When an apparatus or client product in practice executes, it may execute sequentially or in parallel (e.g., in a parallel processor or multithreaded processing environment, or even in a distributed data processing environment) according to the embodiments or methods shown in the figures. 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, the presence of additional identical or equivalent elements in a process, method, article, or apparatus that comprises the recited elements is not excluded.
The units, devices, modules, etc. set forth in the above embodiments may be implemented by a computer chip or an entity, or by a product with certain functions. For convenience of description, the above devices are described as being divided into various modules by functions, and are described separately. Of course, in implementing the present application, the functions of each module may be implemented in one or more software and/or hardware, or a module implementing the same function may be implemented by a combination of a plurality of sub-modules or sub-units, and the like. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
Those skilled in the art will also appreciate that, in addition to implementing the controller as pure computer readable program code, the same functionality can be implemented by logically programming method steps such that the controller is in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Such a controller may therefore be considered as a hardware component, and the means included therein for performing the various functions may also be considered as a structure within the hardware component. Or even means for performing the functions may be regarded as being both a software module for performing the method and a structure within a hardware component.
The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, classes, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
From the above description of the embodiments, it is clear to those skilled in the art that the present application can be implemented by software plus necessary general hardware platform. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which may be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, or the like, and includes several instructions for enabling a computer device (which may be a personal computer, a mobile terminal, a server, or a network device) to execute the method according to the embodiments or some parts of the embodiments of the present application.
The embodiments in the present specification are described in a progressive manner, and the same or similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. The application is operational with numerous general purpose or special purpose computing system environments or configurations. For example: personal computers, server computers, hand-held or portable devices, tablet-type devices, multiprocessor systems, microprocessor-based systems, set top boxes, programmable electronic devices, network PCs, minicomputers, mainframe computers, distributed computing environments that include any of the above systems or devices, and the like.
The above-mentioned embodiments are further described in detail for the purpose of illustrating the invention, and it should be understood that the above-mentioned embodiments are only illustrative of the present invention and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A method of single sand modeling, the method comprising:
completing an initial modeling process, wherein the initial modeling process comprises fault modeling and skeleton mesh generation;
establishing a sand layer system, wherein the sand layer system comprises a sand layer of which the internal structure meets set conditions;
calling a top surface micro-structure and a sandstone thickness value line graph of a sand body according to the sand layer system, and establishing a sand body model of a three-dimensional space in a closed area of a sandstone pinch-out line and/or a reservoir area graph based on the range constraint of the sandstone pinch-out line and/or the reservoir area graph;
and correcting the sand body model by using the well point data to enable the thickness of the sandstone at the boundary of the sandstone pinch-out line and the reservoir area diagram to be 0.
2. The method of claim 1, wherein the calibrating the sand model using the well point data comprises:
based on sandstone top and bottom data of a single well, the sandstone pinch-out line and the boundary of the reservoir area diagram control the sandstone thickness to gradually decrease until the thickness is reduced to 0 at the boundary.
3. The method of claim 1, wherein when the sand system includes an interlayer having an internal structure satisfying a set condition, the method further comprises:
and calling a value line graph of the top surface microstructure and the thickness of the interlayer according to the sand layer system, and establishing an interlayer model under the constraint of a top-bottom interface of the sand body model.
4. The method of claim 3, wherein the method further comprises:
and combining the sand body model and the interlayer model into a sand body space distribution model so that the sand body space distribution model carries out conventional modeling, wherein the conventional modeling comprises vertical network subdivision, phase modeling, attribute modeling and model coarsening.
5. A single sand modeling system, the system comprising:
the initial modeling module is used for finishing an initial modeling process, and the initial modeling process comprises fault modeling and skeleton mesh generation;
the sand layer system building module is used for building a sand layer system, and the sand layer system comprises a sand layer of which the internal structure meets set conditions;
the sand body model establishing module is used for calling a top surface micro-structure and a sandstone thickness value line graph of a sand body according to the sand layer system, and establishing a sand body model of a three-dimensional space in a closed area of a sandstone pinch-out line and/or a reservoir area graph based on the range constraint of the sandstone pinch-out line and/or the reservoir area graph;
and the correction module is used for correcting the sand body model by using the well point data so that the thickness of the sandstone at the boundary of the sandstone pinch-out line and the reservoir area diagram is 0.
6. The system of claim 5, wherein the correction module is specifically configured to:
based on sandstone top and bottom data of a single well, the sandstone pinch-out line and the boundary of the reservoir area diagram control the sandstone thickness to gradually decrease until the thickness is reduced to 0 at the boundary.
7. The system of claim 5, wherein when the sand system includes a sandcourse having an internal structure satisfying a predetermined condition, the system further comprises:
and the interlayer model establishing module is used for calling a value line graph of the top surface microstructure and the thickness of the interlayer according to the sand layer system and establishing an interlayer model under the constraint of a top-bottom interface of the sand body model.
8. The system of claim 5, wherein the system further comprises:
and the combined module is used for combining the sand body model and the interlayer model into a sand body space distribution model so as to enable the sand body space distribution model to carry out conventional modeling, and the conventional modeling comprises vertical network subdivision, phase modeling, attribute modeling and model coarsening.
9. An apparatus, characterized in that the apparatus comprises: the device comprises a data acquisition device, a processor and a memory;
the data acquisition device is used for acquiring data; the memory is to store one or more program instructions; the processor, configured to execute one or more program instructions to perform the method of any of claims 1-4.
10. A computer-readable storage medium having one or more program instructions embodied therein for performing the method of any of claims 1-4.
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| CN113313825A (en) * | 2021-05-17 | 2021-08-27 | 中国石油天然气集团有限公司 | Three-dimensional geological modeling method and device for oil reservoir |
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