Digital twinborn construction method for oil and gas field business

Abstract

The invention belongs to the technical field of digital twinborn development of oil and gas fields, and particularly relates to a digital twinborn construction method for oil and gas field business. According to the digital twinborn construction method, the construction of the digital twinborn of the oil and gas field business is realized through three steps of three-dimensional model topological relation expression, three-dimensional model computational expression and three-dimensional model oil and gas industry business representation, so that a generic technical support is provided for digital twinborn construction in the oil and gas engineering industry. The invention discloses a digital twin construction method for oil and gas field business. The method comprises the following steps: constructing a topological relation of an oil and gas field business three-dimensional model; on the basis of the constructed topological relation of the oil and gas field business three-dimensional model, constructing computational expression of the oil and gas field business three-dimensional model; and modeling the representation of the three-dimensional model of the oil and gas field business.

Description

Technical Field

[0001] The present invention belongs to the technical field of oil and gas field digital twin development, and in particular relates to a method for constructing a digital twin of oil and gas field business. Background Art

[0002] As a new cutting-edge technology, digital twin technology has been increasingly integrated with the industrial field, especially the energy industry, in recent years. Specifically, digital twin technology has laid a solid foundation for visual production control and sustainable technological development in the energy industry through simulation and simulation.

[0003] At present, the existing industrial-level digital twin construction is mainly achieved through programming. However, the diversity of various technologies in the energy industry and the many uncertainties in the actual work process make it difficult to continuously build digital twin systems for oil and gas field businesses. Most of the existing digital twin systems for oil and gas field businesses appear in the form of projects, and multiple projects are separated from each other, making it difficult to expand later intelligent applications. Therefore, technicians are urgently needed to provide a new digital twin construction method to solve the technical barriers in the construction of digital twin systems in oil and gas field businesses.

[0004] After further research, the inventors found that existing digital twin modeling methods mainly rely on the following methods: for example, model reconstruction based on design drawings, lightweight reconstruction based on the designed three-dimensional model, and model reconstruction using the results of laser scanning or oblique photography.

[0005] Among them, reference can be made to the following technical solution recorded in the patent document with the patent title: Intelligent vibration digital twin system and method for industrial environment, application number: CN202080094528.3: The intelligent vibration digital twin system and method include a platform for updating one or more attributes of one or more digital twins, including: receiving a request for one or more digital twins; retrieving the one or more digital twins required to meet the request from the digital twin data storage; retrieving one or more dynamic models corresponding to one or more attributes described in the one or more digital twins indicated by the request; selecting a data source from a set of available data sources based on one or more inputs of the one or more dynamic models; obtaining data from the selected data source; using the retrieved data as one or more inputs to determine one or more outputs of the one or more dynamic models; and updating the one or more attributes of the one or more digital twins based on the one or more outputs of the one or more dynamic models.

[0006] It can be found that the construction methods including the above-mentioned existing technologies have solved the problems of digital twin models in reconstruction, lightweight, and realistic display, but they still cannot meet the requirements of digital twins for virtual and real combination and real-time display in oil and gas field business; and even if technical means are used to respond to certain application requirements proposed by the owner, it still cannot meet the needs of fully supporting digital twins. For example: in the operation of emptying the tank in the crude oil depot, it is necessary to dynamically perceive the position, temperature, pressure and other data of the crude oil in the pipeline in the digital twin scene based on the real-time data of the automated control. However, the existing digital twin construction method cannot achieve and solve the above situation, resulting in the limitation of subsequent digital twin function development and the inability to widely support the actual application of oil and gas field business. Summary of the invention

[0007] The present invention provides a method for constructing a digital twin of oil and gas field business. The method realizes the construction of a digital twin of oil and gas field business through three steps: three-dimensional model topological relationship expression, three-dimensional model computational expression and three-dimensional model oil and gas industry business characterization, thereby providing generic technical support for the construction of digital twins in the oil and gas engineering industry.

[0008] In order to solve the above technical problems, the present invention adopts the following technical solutions: A method for constructing a digital twin of an oil and gas field business comprises the following steps: Construct the topological relationship of the 3D model of oil and gas field business; Based on the topological relationship of the constructed three-dimensional model of oil and gas field business, a computational expression of the three-dimensional model of oil and gas field business is constructed; Modeling the representation of operational 3D models of oil and gas fields.

[0009] Preferably, the process of constructing the topological relationship of the three-dimensional model of the oil and gas field business specifically includes: Step 101: Perform three-dimensional modeling on the pipe segments / equipment / containers of each pipeline involved in the oil and gas field business to form independent pipe segment objects / equipment objects / container objects; Step 102: Draw a smart surface at the end surface of each pipeline segment / equipment / container; After the intelligent surface is drawn, the association between the intelligent surface and the pipe segment object / equipment object / container object to which it belongs is established; Step 103: Encode each smart surface generated by drawing; Describe the connection relationship between each smart surface, and make a type mark on the end face of the pipe segment object / equipment object / container object where each smart surface is located; Step 104: Based on the connection relationship between the smart surfaces established in step 3, a topological connection of three-dimensional objects including pipe segment objects / equipment objects / container objects in the three-dimensional model of the oil and gas field business is formed in the three-dimensional scene.

[0010] Preferably, the smart surface drawn in step 102 is triangular, and the smart surface is smaller than the end surface on which it is located.

[0011] Preferably, the process of constructing a computational expression of the oil and gas field business three-dimensional model based on the topological relationship of the constructed oil and gas field business three-dimensional model specifically includes: Step 201: Using smart points, mark the length and diameter of each pipeline segment / equipment involved in the oil and gas field business; Step 202: After the smart point is marked, an association is established between the smart point and the pipe segment object / equipment object of the pipeline where it is located; Step 203: Based on the description of multiple intelligent points on the same pipe segment object / equipment object and in combination with the topological relationship of the oil and gas field business three-dimensional model, a computational expression of the oil and gas field business three-dimensional model is constructed.

[0012] Preferably, the computational expression of the three-dimensional model of the oil and gas field business is constructed in step 203, which can be specifically described as follows: The volume expression of the constructed pipe segment object / equipment object is: V=r*r*pi*l; the volume expression of the constructed pipe segment object / equipment object is: S=2pi*r*l; Where r is the pipe radius of the pipe section / equipment; l is the length of the pipe section / equipment; The anti-corrosion surface area of ​​the constructed pipe segment object / equipment object is expressed as: S=2pi*(r a *l a +r b *l b +(…)+r n *l n ); Among them, r a is the pipe radius of the pipe section / equipment numbered a, l a The length of the pipe section / equipment numbered a.

[0013] Preferably, the process of modeling the representation of the three-dimensional model of the oil and gas field business specifically includes: Step 301: Create a multi-dimensional material according to the color standard specified in petroleum engineering; Step 302: Establishing material characterization including parameters of temperature, pressure, and flow rate; Step 303: According to the material characterization, the material is mounted and the UV is refreshed on the oil and gas field business three-dimensional model, and the flow effect of the fluid medium in the oil and gas field business three-dimensional model is dynamically characterized; And based on parameters including temperature, pressure and flow rate, dynamic simulation display of oil and gas field operations can be achieved.

[0014] Preferably, the color standards specified in petroleum engineering in step 301 can be specifically described as: blue wind, green water, red fire fighting, yellow gas, and black crude oil.

[0015] Preferably, the fluid medium in the three-dimensional model of the oil and gas field business includes at least crude oil, natural gas, petroleum gas and water.

[0016] The present invention provides a method for constructing a digital twin of an oil and gas field business, which includes the following steps: constructing a topological relationship of a three-dimensional model of an oil and gas field business; constructing a computational expression of the three-dimensional model of an oil and gas field business based on the topological relationship of the three-dimensional model of an oil and gas field business; and modeling the representation of the three-dimensional model of an oil and gas field business. The method for constructing a digital twin of an oil and gas field business with the above-mentioned step characteristics realizes the construction of a digital twin of an oil and gas field business based on the expression of the three-dimensional model topological relationship, the computational expression of the three-dimensional model, and the representation of the oil and gas industry-related business of the three-dimensional model, thereby providing all-round support for the digital twin simulation and simulation of the oil and gas field business, and meeting the requirements for the construction of digital twin business and digital twin scenarios in the oil and gas industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0018] Figure 1 A schematic diagram of a process for constructing a digital twin of an oil and gas field business provided by the present invention; Figure 2a A schematic diagram of the intelligent surface description in the process of constructing the topological relationship of the three-dimensional model of the oil and gas field business; Figure 2b A schematic diagram of the three-dimensional topology development of the smart surface in the process of constructing the topological relationship of the three-dimensional model of the oil and gas field business; Figure 2c This is a schematic diagram of the topological relationship finally formed by the intelligent surface in the process of constructing the topological relationship of the three-dimensional model of oil and gas field business. DETAILED DESCRIPTION

[0019] The present invention provides a method for constructing a digital twin of oil and gas field business. The method realizes the construction of a digital twin of oil and gas field business through three steps: three-dimensional model topological relationship expression, three-dimensional model computational expression and three-dimensional model oil and gas industry business characterization, thereby providing generic technical support for the construction of digital twins in the oil and gas engineering industry.

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Embodiment 1

[0021] The present invention provides a method for constructing a digital twin of an oil and gas field business, such as Figure 1 As shown, the following steps are included: Construct the topological relationship of the 3D model of oil and gas field business; Based on the topological relationship of the constructed three-dimensional model of oil and gas field business, a computational expression of the three-dimensional model of oil and gas field business is constructed; Modeling the representation of operational 3D models of oil and gas fields.

[0022] The following will use specific embodiments to explain in detail the three-dimensional model topological relationship expression, three-dimensional model computational expression and three-dimensional model oil and gas field business (related business) representation in the digital twin construction method of the oil and gas field business of the present invention. Embodiment 2

[0023] Embodiment 2 includes all the technical features of Embodiment 1. Specifically, Embodiment 2 further explains the specific process of constructing the topological relationship of the three-dimensional model of the oil and gas field business recorded in Embodiment 1 as follows.

[0024] Specifically, the process of constructing the topological relationship of the oil and gas field business three-dimensional model includes the following steps: Step 101: Perform three-dimensional modeling on the pipe segments / equipment / containers of each pipeline involved in the oil and gas field business to form independent pipe segment objects / equipment objects / container objects.

[0025] It is worth noting that the purpose of 3D modeling and completing the expression of 3D model topological relationships is to clarify the topological connection relationship of the digital twin of oil and gas field business, so as to solve the logical control problem of gas and liquid flow direction in the simulation and simulation process in the subsequent digital twin construction process.

[0026] Step 102: Draw a smart surface at the end surface of each pipeline segment / equipment / container; After the smart surface is drawn, an association is established between the smart surface and the pipe segment object / equipment object / container object to which it belongs.

[0027] Among them, as a more preferred implementation of the present invention, the smart surface drawn in step 102 is triangular, and the smart surface is smaller than the end surface where it is located.

[0028] Step 103: Encode each smart surface generated by drawing; Describe the connection relationship between each smart surface, and make and enter type marks for the end faces of the pipe segment object / equipment object / container object where each smart surface is located.

[0029] For example, if Figure 2a There are two pipe ends described in the figure, which are pipe segment 101 and pipe segment 102 respectively; the smart surface on pipe segment 101 is numbered a (i.e., smart surface a is on pipe segment 101 object), and the smart surface on pipe segment 102 is numbered b; pipe segment 101 object and pipe segment 102 object are connected, and smart surface a is subsequently connected to smart surface b of pipe segment 102. Therefore, Figure 2b As shown in FIG, smart surface a is described as smart surface 101 - a - 102 - b.

[0030] Step 104: Based on the connection relationship between the smart surfaces established in step 3, a topological connection of three-dimensional objects including pipe segment objects / equipment objects / container objects in the three-dimensional model of the oil and gas field business is formed in the three-dimensional scene.

[0031] Combination Figure 2a , Figure 2b The legend describes the topological connection of the three-dimensional model as follows: Figure 2c As shown, the pipe segment p-11 is composed of pipe segment 101 and pipe segment 102. The smart surface a of pipe segment 101 is coded as 101-a-102-b. The smart surface a belongs to the three-dimensional object of pipe segment 101. Among them, a is the code of the smart surface, 102 is the three-dimensional object of pipe segment 102 connected to the smart surface a, and b is the smart surface b of the connected pipe segment 102 object. Therefore, during the simulation process, the pipe segment 102 object is found through the end surface a of the pipe segment 101, and then the smart surface b is located through the pipe segment 102 object.

[0032] By following the above algorithm, the topological functions of topological pipe sections / equipment / containers can be realized without being restricted by the programs and interfaces of the digital twin, thereby supporting the realization of simulation business. Embodiment 3

[0033] Embodiment 3 includes all the technical features of Embodiment 1. Specifically, Embodiment 3 further explains the specific process of constructing the computational expression of the oil and gas field business three-dimensional model based on the topological relationship of the constructed oil and gas field business three-dimensional model recorded in Embodiment 1 as follows.

[0034] Specifically, based on the topological relationship of the constructed three-dimensional model of the oil and gas field business, the process of constructing the computational expression of the three-dimensional model of the oil and gas field business includes: Step 201: Use smart points to mark the length and diameter of each pipeline segment / equipment involved in the oil and gas field business.

[0035] It should be noted that in order to make the constructed digital twin computable, the present invention further constructs the computational expression of the three-dimensional model of oil and gas field business with the help of the topological relationship of the three-dimensional model, so as to realize intelligent simulation and emulation. Among them, the computational expression of the three-dimensional model of oil and gas field business, such as the calculation of the surface area and internal volume of supporting pipelines and equipment, can help realize intelligent applications such as the prediction of anti-corrosion engineering quantity in the operation and maintenance stage and the prediction of the arrival time of flowing media.

[0036] Step 202: After the smart point is marked, an association is established between the smart point and the pipe segment object / equipment object of the pipeline where it is located.

[0037] Step 203: Based on the description of multiple intelligent points on the same pipe segment object / equipment object and in combination with the topological relationship of the oil and gas field business three-dimensional model, a computational expression of the oil and gas field business three-dimensional model is constructed.

[0038] As a preferred embodiment of the present invention, the computational expression of the three-dimensional model of the oil and gas field business is constructed in step 203, which can be specifically described as follows: The volume expression of the constructed pipe segment object / equipment object is: V=r*r*pi*l; the volume expression of the constructed pipe segment object / equipment object is: S=2pi*r*l; Where r is the pipe radius of the pipe section / equipment; l is the length of the pipe section / equipment; The anti-corrosion surface area of ​​the constructed pipe segment object / equipment object is expressed as: S=2pi*(r a *l a +r b *l b +(…)+r n *l n ); Among them, r a is the pipe radius of the pipe section / equipment numbered a, l a The length of the pipe section / equipment numbered a.

[0039] For example, suppose a pipe segment object has two smart point descriptions: r-25-cm, which describes the radius of the pipe segment as 25 in cm; l-1800-cm, which describes the length of the pipe segment as 1800 in cm. Substituting the above two smart point descriptions into the computational expression of the 3D model, the corresponding volume expression and surface area expression can be obtained.

[0040] At this point, the (crude oil, natural gas, petroleum gas) flow simulation calculation formula is further introduced: v a =Q / (r*r*pi); where v a is the flow rate in pipe a, Q is the value of the flow meter, r is the pipe radius of the smart point in pipe a, and pi is the pi constant 3.1415926. Combining the computational expression of the above three-dimensional model, the position of (crude oil, natural gas, petroleum gas) in the pipeline after t seconds can be calculated, satisfying: l=(Qt-(r a *r a *pi)*la-(r b *r b *pi)*lb-(…)) / (r*r*pi). Among them, Q is the average flow rate of the flow meter (if the flow meter changes greatly, it is necessary to use integration to calculate the flow during this period), r a is the radius of the smart point marker of pipe / container a, l a is the length of the smart point mark on pipeline / container a, ...; calculate sequentially to obtain the position of (crude oil, natural gas, petroleum gas) in the pipeline after t seconds. Embodiment 4

[0041] Embodiment 4 includes all the technical features of Embodiment 1. Specifically, Embodiment 4 further explains the specific process of modeling the representation of the three-dimensional model of the oil and gas field business recorded in Embodiment 1 as follows.

[0042] Specifically, the process of modeling the representation of the three-dimensional model of the oil and gas field business includes: Step 301: Create a multi-dimensional material according to the color standards specified in petroleum engineering.

[0043] Among them, the color standards stipulated in petroleum engineering can be specifically described as: blue wind, green water, red fire fighting, yellow gas, and black crude oil.

[0044] Step 302: Establish material characterization including parameters of temperature, pressure, and flow rate.

[0045] Step 303: According to the material characterization, the material is mounted and UV is refreshed on the oil and gas field business 3D model, and the flow effect of the fluid medium in the oil and gas field business 3D model is dynamically characterized. The fluid medium in the oil and gas field business 3D model includes at least crude oil, natural gas, petroleum gas, and water.

[0046] And based on parameters including temperature, pressure and flow rate, dynamic simulation display of oil and gas field operations can be achieved.

[0047] Finally, it is necessary to add that by modeling the representation of the three-dimensional model of the oil and gas field business, the dynamic simulation display of the oil and gas field business is finally realized. The purpose of this is to avoid the drawback of only being able to realize the simulation business through coding during the construction of the digital twin system, so that the subsequent expansion of the digital twin system no longer has to rely on the current digital twin system source code, and can also be continuously built and improved.

[0048] The present invention provides a method for constructing a digital twin of an oil and gas field business, which includes the following steps: constructing a topological relationship of a three-dimensional model of an oil and gas field business; constructing a computational expression of the three-dimensional model of an oil and gas field business based on the topological relationship of the three-dimensional model of an oil and gas field business; and modeling the representation of the three-dimensional model of an oil and gas field business. The method for constructing a digital twin of an oil and gas field business with the above-mentioned step characteristics realizes the construction of a digital twin of an oil and gas field business based on the expression of the three-dimensional model topological relationship, the computational expression of the three-dimensional model, and the representation of the oil and gas industry-related business of the three-dimensional model, thereby providing all-round support for the digital twin simulation and simulation of the oil and gas field business, and meeting the requirements for the construction of digital twin business and digital twin scenarios in the oil and gas industry.

[0049] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A method for constructing a digital twin of an oil and gas field business, characterized in that: The steps include: Construct the topological relationship of the 3D model of oil and gas field business; Based on the topological relationship of the constructed three-dimensional model of oil and gas field business, a computational expression of the three-dimensional model of oil and gas field business is constructed; Modeling the representation of operational 3D models of oil and gas fields.

2. The method for constructing a digital twin of an oil and gas field business according to claim 1, characterized in that: The process of constructing the topological relationship of the oil and gas field business three-dimensional model specifically includes: Step 101: Perform three-dimensional modeling on the pipe segments / equipment / containers of each pipeline involved in the oil and gas field business to form independent pipe segment objects / equipment objects / container objects; Step 102: Draw a smart surface at the end surface position of each pipeline segment / equipment / container; After the intelligent surface is drawn, the association between the intelligent surface and the pipe segment object / equipment object / container object to which it belongs is established; Step 103: Encode each smart surface generated by drawing; Describe the connection relationship between each smart surface, and make a type mark on the end face of the pipe segment object / equipment object / container object where each smart surface is located; Step 104: Based on the connection relationship between the smart surfaces established in step 3, a topological connection of three-dimensional objects including pipe segment objects / equipment objects / container objects in the three-dimensional model of the oil and gas field business is formed in the three-dimensional scene.

3. The method for constructing a digital twin of an oil and gas field business according to claim 2, characterized in that: The smart surface drawn in step 102 is triangular, and the smart surface is smaller than the end surface on which it is located.

4. The method for constructing a digital twin of an oil and gas field business according to claim 1, characterized in that: The process of constructing the computational expression of the oil and gas field business three-dimensional model based on the topological relationship of the constructed oil and gas field business three-dimensional model specifically includes: Step 201: Using smart points, mark the length and diameter of each pipeline segment / equipment involved in the oil and gas field business; Step 202: After the smart point is marked, an association is established between the smart point and the pipe segment object / equipment object of the pipeline where it is located; Step 203: Based on the description of multiple intelligent points on the same pipe segment object / equipment object and in combination with the topological relationship of the oil and gas field business three-dimensional model, a computational expression of the oil and gas field business three-dimensional model is constructed.

5. The method for constructing a digital twin of an oil and gas field business according to claim 1, characterized in that: The computational expression of the three-dimensional model of the oil and gas field business is constructed in step 203, which can be specifically described as follows: The volume expression of the constructed pipe segment object / equipment object is: V = r * r * pi * l; the volume expression of the constructed pipe segment object / equipment object is: S = 2pi * r * l; Where r is the pipe radius of the pipe section / equipment; l is the length of the pipe section / equipment; The anti-corrosion surface area of ​​the constructed pipe segment object / equipment object is expressed as: S = 2pi * (r a *l a +r b *l b +(…)+r n *l n ); Among them, r a is the pipe radius of the pipe section / equipment numbered a, l a The length of the pipe section / equipment numbered a.

6. The method for constructing a digital twin of an oil and gas field business according to claim 1, characterized in that: The process of modeling the representation of the three-dimensional model of the oil and gas field business specifically includes: Step 301: Create a multi-dimensional material according to the color standard specified in petroleum engineering; Step 302: Establishing material characterization including parameters of temperature, pressure, and flow rate; Step 303: According to the material characterization, the material is mounted and the UV is refreshed on the oil and gas field business three-dimensional model, and the flow effect of the fluid medium in the oil and gas field business three-dimensional model is dynamically characterized; And based on parameters including temperature, pressure and flow rate, dynamic simulation display of oil and gas field operations can be achieved.

7. The method for constructing a digital twin of oil and gas field business according to claim 6, characterized in that: The color standards specified in the petroleum engineering in step 301 can be specifically described as: blue wind, green water, red fire fighting, yellow gas, and black crude oil.

8. The method for constructing a digital twin of an oil and gas field business according to claim 6, characterized in that: The fluid medium in the three-dimensional model of oil and gas field business includes at least crude oil, natural gas, petroleum gas and water.

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