Virtual analogue simulation system used in fracturing fracture fluid experiment

Abstract

The invention discloses a virtual analogue simulation system used in a fracturing crack fluid experiment. The system comprises virtual reality equipment, space positioning equipment and an analogue simulation device, the virtual reality equipment is used for receiving simulation operation of a user for any virtual experiment equipment model and displaying fracturing crack fluid experiment data; the spatial positioning device is used for detecting the position of a user; and the analogue simulation device is used for determining the state and / or mode of the operated virtual experimental equipment model and the logic relationship and reference relationship of virtual data between the operated virtual experimental equipment models according to the simulation operation, and obtaining fracturing fracture fluid experimental data by combining standard experimental data and the user position. According to the system, virtual simulation of a fracturing crack fluid experiment is realized, virtual simulation of related complex experiments can be carried out under the condition that actual hardware is not used, an operator is helped to be familiar with related equipment and operation processes in advance, and related data display is carried out at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of oil and gas reservoir development, and in particular to a virtual simulation system used in a fracturing fracture fluid experiment. Background Art

[0002] As a non-contact optical measurement technology, PIV / PTV technology has been widely used in the field of fluid motion research and has been introduced into the observation of fractures in oil and gas reservoirs. The PIV / PTV system mainly includes high-speed cameras, lasers, synchronous controllers, etc. By adding tracer particles to the fluid, capturing particle images with a high-speed camera, and calculating particle displacements through image processing algorithms, the velocity distribution and velocity vector image of the flow field are obtained. In the observation of fractures in oil and gas reservoirs, PIV / PTV technology can measure the motion trajectory and velocity field of particles in the fracture in real time and accurately.

[0003] In the particle tracking monitoring experiment in the fracturing crack, the operation of the above experimental equipment is dangerous and the cost is high; the experimental process is cumbersome and has a certain degree of difficulty in operation; the experimental equipment is a precision instrument and there is a risk of damage if it is not used skillfully. At the same time, the PIV / PTV experimental results are limited to the results of the external (display) observation and processing of the computer system and cannot be integrated into the environment created by the computer system. It is also impossible to intuitively observe the internal flow of the experimental flow field, which makes it impossible for researchers to gain a deeper understanding of the structure of the flow field. Summary of the invention

[0004] In view of the above problems, the present invention is proposed to provide a virtual simulation system for fracturing fracture fluid experiments that overcomes the above problems or at least partially solves the above problems.

[0005] The present invention provides a virtual simulation system for fracturing fluid experiment, comprising: virtual reality equipment, space positioning equipment and simulation device; wherein the simulation device is built with at least one virtual experiment equipment model, each virtual experiment equipment model is set with different states and / or modes, and the simulation device is also constructed with a database for defining the logical relationship and reference relationship of virtual data between each virtual experiment equipment model; the simulation device is also built with standard experimental data;

[0006] The virtual reality device includes: a head display device and an interactive device, wherein the interactive device is used to receive a user's simulation operation on any virtual experimental device model; the head display device is used to display the fracturing fracture fluid experimental data obtained by the simulation device;

[0007] The spatial positioning device is used to: detect the user's position;

[0008] The simulation device is used to: determine the state and / or mode of the operated virtual experimental equipment model and the logical relationship and reference relationship of virtual data between the operated virtual experimental equipment models according to the simulation operation, and obtain fracturing fracture fluid experimental data in combination with standard experimental data and user position.

[0009] Optionally, the at least one virtual experimental equipment model includes: a laser model, a camera model, a lens model and / or a synchronizer model.

[0010] Optionally, the laser model is set with a switch state, a light source position state and a laser triggering mode;

[0011] The camera model is set with a switch state and a shooting state;

[0012] The lens model is set to have an on / off state;

[0013] The synchronizer model is set with a switch state and a receiving signal mode.

[0014] Optionally, the simulation device is further used to: receive an operation process input from the outside, so that the user can perform simulation operations according to the operation process.

[0015] Optionally, the operation flow defines an erroneous operation step;

[0016] The simulation device is also used to determine whether the simulation operation corresponds to an erroneous operation step, and if so, to report an error.

[0017] Optionally, the simulation device is further used to: receive real experimental data input from the outside, and obtain fracturing fracture fluid experimental data by combining standard experimental data, real experimental data and user position.

[0018] Optionally, the standard experimental data and the real experimental data are fracturing fracture fluid measurement data based on PIV / PTV technology.

[0019] Optionally, the interactive device is further used to: receive a display adjustment operation of the user for the fracturing fracture fluid experimental data;

[0020] The head display device is also used to adjust the display of the fracturing fracture fluid experimental data according to the display adjustment operation.

[0021] Optionally, the display adjustment operation includes: a zoom-in operation, a zoom-out operation, a rotation operation and / or a gesture-based display adjustment operation.

[0022] Optionally, the spatial positioning device includes: at least two laser emitters and a plurality of photosensitive sensors, wherein the plurality of photosensitive sensors are respectively arranged on the head display device and the interactive device.

[0023] This system uses virtual reality equipment and simulation software to create a virtual experimental equipment model corresponding to the fracturing fracture fluid experimental equipment, combined with the fracturing fracture fluid experimental data, to achieve virtual simulation of the fracturing fracture fluid experiment. It can perform virtual simulation of related complex experiments without using actual hardware, helping operators to become familiar with related equipment and operating procedures in advance, while displaying relevant data.

[0024] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0026] Figure 1 A schematic diagram showing an application scenario of a virtual simulation system for a fracturing fracture fluid experiment provided by an embodiment of the present invention;

[0027] Figure 2 A schematic diagram showing a method for using a virtual simulation system for a fracturing fracture fluid experiment provided by an embodiment of the present invention is shown;

[0028] Figure 3 One of the three-dimensional particle display effect diagrams of an embodiment of the present invention is shown;

[0029] Figure 4 The second diagram of the three-dimensional particle display effect of the embodiment of the present invention is shown. DETAILED DESCRIPTION

[0030] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to enable the scope of the present invention to be fully communicated to those skilled in the art.

[0031] Figure 1The following is a schematic diagram showing an application scenario of a virtual simulation system for fracturing fluid experiments provided by an embodiment of the present invention. Figure 1 As shown, the system includes: a virtual reality device (VR / AR device), a space positioning device and a simulation device, wherein the simulation device is a device for realizing the function of the simulation software (not shown in the figure).

[0032] Virtual reality equipment includes: head-mounted display equipment and interactive equipment. The head-mounted display equipment uses high-resolution, low-latency VR head-mounted display equipment to provide users with an immersive observation experience. The head-mounted display equipment has the characteristics of wide field of view, high refresh rate and low latency to ensure the clarity and smoothness of the image. The interactive equipment includes a handle and a head-mounted display interactive device, which allows users to operate in a virtual environment, realizing a more intuitive and natural interaction method. Specifically, the interactive device is used to receive the user's simulated operation on any virtual experimental equipment model; the head-mounted display device is used to display the fracturing fracture fluid experimental data obtained by the simulation device.

[0033] The spatial positioning device is used to detect the user's position. In an optional embodiment, the spatial positioning device includes: at least two laser transmitters and multiple photosensitive sensors, and the laser transmitters and photosensitive sensors are used to determine the position of the user's body. For example, two laser transmitters are placed at opposite corners to form a positioning space, and multiple photosensitive sensors are respectively arranged on the head display device and the interactive device. The laser beam is emitted by the LED light in the laser transmitter, and the positioning space is laser scanned by the scanning module. Multiple photosensitive sensors are installed on the head display and the handle to determine the position and direction by calculating the time of receiving the laser.

[0034] The software system is the conversion bridge between data and VR system. The physical simulation it applies is a very important part of VR technology. It simulates various physical laws in the physical world through computers, allowing users to get a more realistic feeling in the virtual environment. Physical simulation mainly involves mechanics, optics and other aspects. In VR technology, physical simulation is widely used. For example, in the software, the physical engine can simulate physical laws such as object collision and light propagation, allowing users to experience more realistic scenes in the virtual environment. Physical simulation provides algorithm support for users to conduct PIV simulation experiments.

[0035] In the embodiment of the present invention, the simulation device is a device for realizing the function of the simulation software. The simulation device has at least one virtual experimental equipment model built in, each virtual experimental equipment model is set with different states and / or modes, and the simulation device also constructs a database for defining the logical relationship and reference relationship of virtual data between each virtual experimental equipment model; the simulation device also has standard experimental data built in.

[0036] Wherein, at least one virtual experimental equipment model includes: a laser model, a camera model, a lens model and / or a synchronizer model.

[0037] In an optional embodiment, a three-dimensional model of the PIV system is constructed by three-dimensional software, including physical objects such as cameras, lasers, and fracturing crack models. The appearance of the model is designed using 3D software, for example, by scanning the actual object and performing 3D modeling. The virtual reality toolbox (VR Toolbox) of Matlab software is used to complete the logical operation design of the model, such as the switch of a button, to achieve a complete model design.

[0038] Set different states and / or modes of each virtual experimental equipment model, such as the state of the laser switch, the functional state of the button, the camera state, the synchronizer receiving signal mode, etc., and record the different states and / or modes of the hardware in the database.

[0039] Specifically, the laser model is set with a switch state, a sheet light source position state and a laser trigger mode; the camera model is set with a switch state and a shooting state; the lens model is set with a switch state; and the synchronizer model is set with a switch state and a receiving signal mode.

[0040] By using the real functional relationship between the above virtual experimental equipment models, the logical relationship and reference relationship of the virtual data between the virtual experimental equipment models are defined, and a related database is constructed.

[0041] Take the camera and synchronizer as an example. The synchronizer defines the function of receiving external signals and sending signals to connected devices. The timing relationship of the synchronizer can be set through software; the camera defines the state of shooting after receiving the synchronizer signal. In reality, the synchronizer is set by software to send a shooting signal to the camera 200us after receiving the computer signal. The signal transmission is completed by computer-synchronizer-camera. This logical operation can also be realized in simulation experiments.

[0042] The simulation device is used to determine the state and / or mode of the operated virtual experimental equipment model and the logical relationship and reference relationship of virtual data between the operated virtual experimental equipment models according to the simulation operation, and obtain the fracturing fracture fluid experimental data in combination with the standard experimental data and the user position.

[0043] Furthermore, the simulation device is also used to: receive an external input operation process, so that the user can perform a simulated operation according to the operation process. Specifically, the actual PIV operation process is imported, and the user can perform operation training according to the standard operation process.

[0044] Optionally, the operation flow defines an erroneous operation step; the simulation device is further used to: determine whether the simulated operation corresponds to an erroneous operation step, and if so, report an error. For example, the laser button activation sequence is wrong, resulting in the laser being unable to start and reporting an error.

[0045] In this system, the simulation device has built-in standard experimental data, which is the fracturing fracture fluid measurement data corresponding to the standard model based on PIV / PTV technology. Specifically, after the user completes the standard operation process, the simulation device determines the state and / or mode of the virtual experimental equipment model operated in sequence, and the logical relationship and reference relationship of the virtual data between the virtual experimental equipment models operated in sequence, determines the standard experimental data corresponding to the standard operation process, and further, obtains the fracturing fracture fluid experimental data by combining the standard experimental data and the user's position.

[0046] However, for some special experimental models, the experimental data can be obtained through real experiments in practice. The simulation device is also used to receive external input real experimental data, which is the actual measurement data of the fracturing fracture fluid based on the PIV / PTV technology.

[0047] Figure 2 FIG. 1 is a schematic diagram showing a method for using a virtual simulation system for a fracturing fluid experiment provided by an embodiment of the present invention. Figure 2 As shown, by importing the particle image data in the external cracks into the software, combining the standard experimental data, the real experimental data and the user's position to obtain the fracturing fracture fluid experimental data, and using the VR display system, it is possible to intuitively observe the internal flow conditions of the experimental flow field and better understand the analysis data.

[0048] In an optional embodiment, the interactive device is further used to: receive a display adjustment operation of the user for the fracturing fracture fluid experimental data; the head display device is further used to: adjust the display of the fracturing fracture fluid experimental data according to the display adjustment operation. Optionally, the display adjustment operation includes: a zoom-in operation, a zoom-out operation, a rotation operation and / or a gesture-based display adjustment operation.

[0049] Specifically, users can use the handle to zoom in and out on the constructed three-dimensional particle image. Zooming out allows users to view the overall effect from the outside, and zooming in allows users to view local details from the inside. The three-dimensional particle image can also be rotated to adjust to the best viewing angle. When users wear a VR headset with built-in gesture recognition sensors such as a gyroscope, when they turn their heads, the gyroscope can capture these subtle changes in movement in real time and transmit them to the VR system. The system adjusts the image in the user's field of view based on the gesture-based display adjustment operation to ensure that the virtual environment the user sees is consistent with their head movements, achieving an immersive experience.

[0050] Figure 3 One of the three-dimensional particle display effect diagrams of an embodiment of the present invention is shown. Figure 4 The second diagram of the three-dimensional particle display effect of the embodiment of the present invention is shown.

[0051] In summary, the virtual simulation system for fracturing fluid experiment provided by the present invention can achieve the following functions:

[0052] 1. The system can call the model database and realize the construction and layout of the virtual experimental scene through the handle operation, including the movement and rotation of various components such as lasers. The overall layout is displayed in the VR helmet;

[0053] 2. By operating the handle, the hardware pipeline connection operation can be realized in the virtual environment. For example, when the synchronizer and the laser are connected in the standard order, the system will determine whether the pipeline connection is correct or not. If the order is connected incorrectly, the system will prompt an error message and also provide connection instructions.

[0054] 3. The system can simulate focus and aperture operations. In a virtual environment, users can use the handle to achieve the focus function, and the real-time changes during focus are displayed in real time in the headset.

[0055] 4. Data information of different experimental models can be uploaded, and targeted training operations can be performed.

[0056] 5. The complete experimental process can be simulated. There is a judging system in the system to score the operation process and operation time, and to judge the experimental ability.

[0057] This system is designed with an intuitive and easy-to-use interactive interface. Users can easily adjust observation parameters and viewing angles in a virtual environment. They can use and operate the equipment in the virtual environment to simulate the actual use process, making it more convenient and quick to conduct experimental drills and training. The virtual experimental equipment in the system can be used to operate the equipment in the system to achieve a complete experimental process drill. For users, the virtual environment reduces the cost of experimental training and reduces safety risks caused by unfamiliarity and lack of experience. Convenient and quick experimental simulation operations can be performed at any time, which strengthens the understanding of the experimental process and improves the efficiency of real experiments. The model upload function expands the drill operation of more equipment. At the same time, the data results of particle movement in the fracturing cracks captured by PIV / PTV are uploaded to the VR system, so that the particle tracking monitoring in the fracturing cracks can be visualized, and the particle movement information can be better displayed for particle tracking monitoring.

[0058] Compared with the on-site training method in reality, VR simulation operation can greatly reduce the training cost, save time and resources. Users can repeatedly perform the same operation training in a virtual environment until they are proficient, and the equipment will not be damaged due to repeated operations. Users can perform various operation training in a virtual environment without worrying about the safety risks in the real environment. This system is scalable and can upload different equipment model information as needed to perform experimental simulation in a virtual environment. Compared with traditional display solutions, it occupies a small area, is easy to use, and is more suitable for beginner training. This system is simple to operate and easy to use.

[0059] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0060] Similarly, it should be understood that in order to streamline the present invention and aid in understanding one or more of the various inventive aspects, in the above description of exemplary embodiments of the present invention, the various features of the embodiments of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, this disclosed method should not be interpreted as reflecting the following intention: that the claimed invention requires more features than the features explicitly recited in each claim. More specifically, as reflected in the claims below, inventive aspects lie in less than all the features of the individual embodiments disclosed above. Therefore, the claims that follow the specific embodiment are hereby expressly incorporated into the specific embodiment, with each claim itself serving as a separate embodiment of the present invention.

[0061] Those skilled in the art will appreciate that the modules in the devices in the embodiments may be adaptively changed and arranged in one or more devices different from the embodiments. The modules or units or components in the embodiments may be combined into one module or unit or component, and in addition they may be divided into a plurality of submodules or subunits or subcomponents. Except that at least some of such features and / or processes or units are mutually exclusive, all features disclosed in this specification (including the accompanying claims, abstracts and drawings) and all processes or units of any method or device disclosed in this manner may be combined in any combination. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstracts and drawings) may be replaced by an alternative feature providing the same, equivalent or similar purpose.

[0062] In addition, those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims below, any one of the claimed embodiments may be used in any combination.

[0063] The various component embodiments of the present invention can be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. It should be understood by those skilled in the art that a microprocessor or digital signal processor (DSP) can be used in practice to implement some or all functions of some or all components according to embodiments of the present invention. The present invention can also be implemented as a device or apparatus program (e.g., computer program and computer program product) for executing part or all of the methods described herein. Such a program implementing the present invention can be stored on a computer-readable medium, or can have the form of one or more signals. Such a signal can be downloaded from an Internet website, or provided on a carrier signal, or provided in any other form.

[0064] It should be noted that the above embodiments illustrate the present invention rather than limit it, and that those skilled in the art may devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets shall not be construed as a limitation on the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "one" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present invention may be implemented by means of hardware comprising a number of different elements and by means of a suitably programmed computer. In a unit claim enumerating a number of devices, several of these devices may be embodied by the same hardware item. The use of the words first, second, and third, etc. does not indicate any order. These words may be interpreted as names. The steps in the above embodiments, unless otherwise specified, should not be understood as limitations on the order of execution.

Claims

1. A virtual simulation system for fracturing fluid experiment, characterized in that: include: Virtual reality equipment, spatial positioning equipment and simulation device; wherein the simulation device is equipped with at least one virtual experimental equipment model, each virtual experimental equipment model is set with different states and / or modes, and the simulation device is also equipped with a database for defining the logical relationship and reference relationship of virtual data between each virtual experimental equipment model; the simulation device is also equipped with standard experimental data; The virtual reality device includes: a head display device and an interactive device, wherein the interactive device is used to receive a user's simulation operation on any virtual experimental device model; the head display device is used to display the fracturing fracture fluid experimental data obtained by the simulation device; The spatial positioning device is used to: detect the user's position; The simulation device is used to: determine the state and / or mode of the operated virtual experimental equipment model and the logical relationship and reference relationship of virtual data between the operated virtual experimental equipment models according to the simulation operation, and obtain fracturing fracture fluid experimental data in combination with standard experimental data and user position.

2. The system according to claim 1, characterized in that The at least one virtual experimental equipment model includes: a laser model, a camera model, a lens model and / or a synchronizer model.

3. The system according to claim 2, characterized in that The laser model is set with a switch state, a light source position state and a laser triggering mode; The camera model is set with a switch state and a shooting state; The lens model is set to have an on / off state; The synchronizer model is set with a switch state and a receiving signal mode.

4. The system according to claim 1, characterized in that The simulation device is also used to receive an external input operation process so that the user can perform simulation operations according to the operation process.

5. The system according to claim 4, characterized in that The operation flow definition contains incorrect operation steps; The simulation device is also used to determine whether the simulation operation corresponds to an erroneous operation step, and if so, to report an error.

6. The system according to claim 1, characterized in that The simulation device is also used to receive external input real experimental data, and obtain fracturing fracture fluid experimental data by combining standard experimental data, real experimental data and user position.

7. The system according to claim 6, characterized in that The standard experimental data and the real experimental data are fracturing fracture fluid measurement data based on the PIV / PTV technology.

8. The system according to claim 1, characterized in that The interactive device is also used to: receive a display adjustment operation of the user for the fracturing fracture fluid experimental data; The head display device is also used to adjust the display of the fracturing fracture fluid experimental data according to the display adjustment operation.

9. The system according to claim 8, characterized in that The display adjustment operation includes: a zoom-in operation, a zoom-out operation, a rotation operation and / or a gesture-based display adjustment operation.

10. The system according to claim 1, characterized in that The spatial positioning device includes: at least two laser emitters and a plurality of photosensitive sensors, wherein the plurality of photosensitive sensors are respectively arranged on the head display device and the interactive device.

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