Visual oil reservoir water-drive oil extraction simulation method and related equipment thereof

Abstract

The invention relates to a visual oil reservoir water-drive oil production simulation method and related equipment thereof.The method comprises the steps that a visual oil reservoir water-drive oil production model is built according to the oil reservoir form and oil reservoir parameters of a target oil reservoir, and the visual oil reservoir water-drive oil production model comprises a visual shell and a quartz sand filling layer; the quartz sand filling layer is arranged in the visual shell; according to injection-production parameters corresponding to the oil reservoir parameters, performing a water-drive oil production simulation experiment through the visual oil reservoir water-drive oil production model to generate simulation experiment data; and processing the simulation experiment data, and determining water drive wave and law information and water drive wave and degree information in the water drive oil extraction process corresponding to the water drive oil extraction simulation experiment. Based on the method, a highly customizable oil reservoir water-drive oil production model can be provided, and the experimental observation range can be widened through a visualization method.

Description

Technical Field

[0001] The invention relates to the technical field of oil and gas field development, and in particular to a visualized reservoir water drive oil production simulation method and related equipment. Background Art

[0002] Reservoir simulation is an important part of the reservoir production and development process. Experimental-based reservoir physical simulation plays an irreplaceable role in reservoir simulation due to its multiple controllable factors and clear and reliable simulation results.

[0003] At present, the design of reservoir physical simulation experiments varies according to the needs and characteristics of the research object, but most experiments usually use a standard square model to simplify the design, experiment and data collection, which ignores the simulation of unconventional reservoirs. In addition, in order to accurately simulate the high temperature and high pressure environment of underground reservoirs, the experimental equipment needs to be designed to be very sturdy, which is limited by the transparency of the material, which is very unfavorable for the visual observation of the experiment. Therefore, the traditional physical simulation experiment model is single, the observation range is limited, and the degree of visualization is low due to material limitations. Summary of the invention

[0004] The embodiments of the present invention provide a visualized reservoir water drive oil production simulation method and related equipment, which at least solve the problems of single model, limited observation range and low visualization in the related technology.

[0005] According to a first aspect of an embodiment of the present invention, there is provided a method for simulating oil production by water flooding in a visualized oil reservoir, comprising:

[0006] Constructing a visualized reservoir water drive oil production model according to the reservoir morphology and reservoir parameters of the target reservoir, wherein the visualized reservoir water drive oil production model comprises a visualized shell and a quartz sand filling layer, wherein the quartz sand filling layer is arranged in the visualized shell;

[0007] According to the injection and production parameters corresponding to the reservoir parameters, a water drive oil production simulation experiment is performed through the visualized reservoir water drive oil production model to generate simulation experiment data;

[0008] The simulation experiment data are processed to determine water drive sweep law information and water drive sweep degree information in the water drive oil production process corresponding to the water drive oil production simulation experiment.

[0009] Preferably, the visualization housing comprises a first glass plate and a second glass plate;

[0010] The method of constructing a visualized reservoir water drive oil production model according to the reservoir morphology and reservoir parameters of the target reservoir includes:

[0011] Determine the reservoir simulation form corresponding to the visualized reservoir water drive oil production model according to the reservoir form and the reservoir parameters;

[0012] Carving edge notches corresponding to the simulated reservoir shape on the first glass plate and the second glass plate respectively, wherein the edge notches on the first glass plate and the edge notches on the second glass plate are symmetrically arranged;

[0013] A plurality of boreholes corresponding to the well positions of the target oil reservoir are opened on the first glass plate, and stainless steel capillaries are fixed in the plurality of boreholes, with one end of the stainless steel capillary being flush with the side of the first glass plate having the edge notch;

[0014] The quartz sand filling layer is arranged in the edge scoring area of ​​the first glass plate and the second glass plate, and the quartz sand filling layer is fixedly arranged on the side of the first glass plate and the second glass plate having the edge scoring;

[0015] Covering the second glass plate on the first glass plate, wherein the quartz sand filling layer on the second glass plate is flush with the edge of the quartz sand filling layer on the first glass plate;

[0016] A sealing strip is arranged at the periphery of the quartz sand filling layer so that the quartz sand filling layer forms a closed area, and the sealing strip is arranged between the first glass plate and the second glass plate;

[0017] Crude oil is injected into the quartz sand filling layer, and the filling volume of the crude oil is determined.

[0018] Preferably, the first glass plate and the second glass plate are made of ultra-white glass, the diameters of the first glass plate and the second glass plate are less than 300 mm, and the thicknesses of the first glass plate and the second glass plate are 10 mm to 20 mm.

[0019] Preferably, the depth of the edge score on the first glass plate and the second glass plate ranges from 1 mm to 1.5 mm, and the distance between the edge score and the edge of the first glass plate and the edge of the second glass plate ranges from more than 20 mm.

[0020] Preferably, the diameter of the drilled hole is comprised between 2 mm and 3 mm.

[0021] Preferably, the quartz sand mesh number of the quartz sand filling layer is determined according to the preset permeability of the water flooding oil production simulation experiment, and different quartz sand mesh numbers correspond to different permeabilities and sealing strip diameters.

[0022] Preferably, the water drive oil production simulation experiment is performed through the visualized reservoir water drive oil production model according to the injection and production parameters corresponding to the reservoir parameters to generate simulation experiment data, including:

[0023] Placing the visualized oil reservoir water drive oil production model on an experimental platform, so as to adjust the visualized oil reservoir water drive oil production model to a preset experimental angle through the experimental platform;

[0024] The water injection well and the production well of the visualized reservoir water drive oil production model are connected to an injection pump and a high-precision measuring cylinder respectively, the water drive oil production simulation experiment is performed based on the injection and production parameters, and image information of the water drive oil production simulation experiment is collected by an image acquisition device;

[0025] The simulation experiment data is generated based on the measurement data of the high-precision measuring cylinder and the image information.

[0026] According to a second aspect of an embodiment of the present invention, there is provided a visual reservoir water drive oil production simulation device, comprising:

[0027] A construction module, used for constructing a visualized reservoir water drive oil production model according to the reservoir morphology and reservoir parameters of the target reservoir, wherein the visualized reservoir water drive oil production model comprises a visualized shell and a quartz sand filling layer, wherein the quartz sand filling layer is arranged in the visualized shell;

[0028] An experimental module, used for performing a water drive oil production simulation experiment through the visualized oil reservoir water drive oil production model according to the injection and production parameters corresponding to the oil reservoir parameters, so as to generate simulation experiment data;

[0029] The processing module is used to process the simulation experiment data to determine the water drive sweep law information and water drive sweep degree information in the water drive oil production process corresponding to the water drive oil production simulation experiment.

[0030] According to a third aspect of an embodiment of the present invention, there is provided an electronic device, comprising: a processor, and a memory storing a program, wherein the program comprises instructions, which, when executed by the processor, cause the processor to execute the method described in the first aspect.

[0031] According to a fourth aspect of an embodiment of the present invention, a non-transitory machine-readable medium storing computer instructions is provided, wherein the computer instructions are used to cause the computer to execute the method described in the first aspect.

[0032] A visualized reservoir water drive oil production simulation method provided by an embodiment of the present invention can solve the problems of single model, limited observation range and low visualization in related technologies. Specifically, a reservoir water drive oil production model including a visualized shell and a quartz sand filling layer is constructed based on the morphology and parameters of the target reservoir, and a simulation experiment is performed based on the above reservoir water drive oil production model. The reservoir water drive oil production model is constructed based on the morphology and parameters of the target reservoir, so the richness of the reservoir water drive oil production model can be improved. In addition, through visualization, the displacement and migration of fluids during water drive can be intuitively observed, and accurate data can be generated. By analyzing these data, the water drive sweep law and sweep degree can be determined, thereby optimizing the oil production strategy and improving the recovery rate, which is particularly suitable for the development of unconventional oil reservoirs. After the reservoir water drive oil production model is constructed, detailed simulation experimental data are generated by injecting water drive parameters corresponding to the reservoir parameters, and these data are processed and analyzed to determine the law and degree of water drive sweep during water drive oil production. This method not only enhances the visualization observation capability of the water flooding process inside the reservoir, but also provides a more accurate and comprehensive analysis of the water flooding effect, which helps to optimize the oil production strategy, improve the recovery rate, and provide effective technical support for the development of unconventional oil reservoirs. Based on the above method, a highly customizable reservoir water flooding oil production model can be provided, and the experimental observation range can be improved through visualization methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other embodiments can be obtained based on these drawings without creative work.

[0034] Figure 1 A flowchart of a visualized reservoir water drive oil production simulation method provided by an exemplary embodiment of the present invention.

[0035] Figure 2 A flow chart of a method for preparing a visualized reservoir water drive oil production model provided by an exemplary embodiment of the present invention.

[0036] Figure 3 A schematic diagram of an edge notch of a first glass plate provided by an exemplary embodiment of the present invention.

[0037] Figure 4 A schematic diagram of an edge notch of a second glass plate provided by an exemplary embodiment of the present invention.

[0038] Figure 5 A schematic diagram of a capillary tube of a first glass plate is provided according to an exemplary embodiment of the present invention.

[0039] Figure 6 An exemplary embodiment of the present invention provides a corresponding relationship diagram between the cumulative water injection volume and the sweep coefficient.

[0040] Figure 7 An exemplary embodiment of the present invention provides a corresponding relationship diagram between the cumulative water injection volume and the water cut of water drive.

[0041] Figure 8 An exemplary embodiment of the present invention provides a corresponding relationship diagram between the cumulative water injection volume and the recovery degree.

[0042] Fig. 9 A schematic structural diagram of a visualized reservoir water drive oil production simulation device provided by an exemplary embodiment of the present invention.

[0043] Fig.10 The present invention provides a schematic structural diagram of an electronic device according to an exemplary embodiment of the present invention.

[0044] In the figure: 1. first glass plate; 2. second glass plate; 3. edge notch; 4. capillary tube. DETAILED DESCRIPTION

[0045] Embodiments of the present embodiment will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present embodiment are shown in the accompanying drawings, it should be understood that the present embodiment can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein, which are instead provided for a more thorough and complete understanding of the present embodiment. It should be understood that the drawings and embodiments of the present embodiment are only for exemplary purposes and are not intended to limit the scope of protection of the present embodiment.

[0046] A reservoir is an area of ​​underground rock that is rich in oil or gas. It is usually composed of multiple layers of rock and pores that can contain oil, gas or other fluids, forming a natural underground storage area. Reservoir development refers to the process of extracting oil or gas from underground reservoirs through a series of engineering and technological means. Development includes exploration, drilling, production and processing, aiming to achieve efficient and safe extraction of energy resources from the ground. This process involves starting from determining the location and size of the reservoir, to designing and implementing production facilities, and managing the production process to ensure that the energy resources can be economically and sustainably extracted.

[0047] Reservoir simulation is one of the key links in the process of reservoir production and development. Experimental-based reservoir physical simulation plays an important role in reservoir simulation due to its diverse controllable factors and clear and reliable simulation effects. At present, the design of reservoir physical simulation experiments is usually based on the needs and characteristics of the research object. However, in order to simplify the design, facilitate implementation and data collection, most experimental models usually adopt a standard square design, which ignores the simulation needs of unconventional reservoirs.

[0048] In addition, in order to accurately reproduce the high temperature and high pressure environment of underground oil reservoirs, experimental equipment is usually designed to be very sturdy, but this limits the use of transparent materials and affects the visual observation effect of the experiment. Therefore, traditional physical simulation experiments mainly rely on injection and production data, and can only record a limited experimental observation area, and cannot fully observe the displacement and migration process inside the reservoir.

[0049] In order to solve the above problems, an embodiment of the present invention provides a visualized reservoir water drive oil production simulation method and related equipment.

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0051] Figure 1 A flowchart of a method for simulating oil production by water flooding in a visualized oil reservoir is provided as an exemplary embodiment of the present invention. Figure 1 , the method comprises the following steps.

[0052] Step S101, constructing a visualized reservoir water drive oil production model according to the reservoir morphology and reservoir parameters of the target reservoir, wherein the visualized reservoir water drive oil production model comprises a visualized shell and a quartz sand filling layer, wherein the quartz sand filling layer is arranged in the visualized shell.

[0053] Step S102, according to the injection and production parameters corresponding to the reservoir parameters, a water drive oil production simulation experiment is performed through a visualized reservoir water drive oil production model to generate simulation experiment data.

[0054] Step S103, processing the simulation experiment data to determine the water drive sweep law information and water drive sweep degree information in the water drive oil production process corresponding to the water drive oil production simulation experiment.

[0055] First, a visualized reservoir water drive oil production model is constructed according to the reservoir morphology and reservoir parameters of the target reservoir. In this embodiment, the visualized reservoir water drive oil production model includes a visualized shell and a quartz sand filling layer, and the quartz sand filling layer is arranged in the visualized shell.

[0056] In the process of reservoir development, in order to more accurately understand and simulate the water drive oil production process inside the reservoir, it is first necessary to build a visual reservoir water drive oil production model. In this embodiment, the visual reservoir water drive oil production model is built according to the reservoir morphology and reservoir parameters of the target reservoir.

[0057] In this embodiment, the reservoir morphology may include the geological structure, pore distribution, lithological characteristics, etc. of the reservoir, which directly affect the accuracy of subsequent simulation experiments. The reservoir parameters may include the physical properties of the reservoir such as pressure, temperature, porosity, permeability, etc., which are the basis of model design.

[0058] In practical applications, the visualized reservoir water drive oil production model includes a visualized shell and a quartz sand filling layer, and the quartz sand filling layer is arranged in the visualized shell.

[0059] The visualization shell can be made of highly transparent materials to observe the water drive process inside the reservoir. The visualization shell can meet the visualization needs of water drive oil production simulation experiments and ensure that the fluid migration and displacement in the model can be clearly observed during the experiment.

[0060] The quartz sand filling layer is set inside the visualization shell, which can be used to simulate the real geological characteristics and pore structure inside the reservoir. By selecting quartz sand that meets the physical property requirements of the water flooding oil production simulation experiment, the authenticity of the model can be guaranteed.

[0061] In this embodiment, according to the actual reservoir morphology and reservoir parameters of the target reservoir, a visual reservoir water drive oil production model is accurately constructed, which can lay the foundation for subsequent water drive oil production simulation experiments. The accuracy of the visual reservoir water drive oil production model improves the reliability of experimental data and the effectiveness of subsequent analysis.

[0062] After obtaining the visualized reservoir water drive oil production model, a water drive oil production simulation experiment can be carried out through the visualized reservoir water drive oil production model according to the injection and production parameters corresponding to the reservoir parameters to generate simulation experiment data.

[0063] The injection and production parameters can be determined according to the reservoir parameters of the target reservoir, and the injection and production parameters may include experimental conditions such as the flow rate, pressure, and temperature of the injected and produced fluids. The injection and production parameters match the geological characteristics of the reservoir and the model design, which can ensure the comparability and realism of the experiment.

[0064] During the simulation experiment, various data in the water drive oil production process can be recorded and collected in real time, including the migration path of the fluid, displacement efficiency, oil-water phase separation, etc. These data can provide a basis for subsequent analysis and processing.

[0065] In an optional embodiment, based on the following steps, a water drive oil production simulation experiment can be performed through a visualized reservoir water drive oil production model according to injection and production parameters corresponding to reservoir parameters to generate simulation experiment data.

[0066] Firstly, the visualized reservoir water drive oil production model is placed on the experimental platform, so as to adjust the visualized reservoir water drive oil production model to a preset experimental angle through the experimental platform.

[0067] In this embodiment, during the experimental platform preparation stage, an experimental platform with adjustable uniform backlight and tilt functions can be prepared. These functions can control the illumination and model tilt during the experiment to maximize the observation of the water flooding process.

[0068] After placing the prepared visualized reservoir water drive oil production model on the experimental platform, the inclination angle and backlight brightness of the platform can be adjusted according to the experimental design requirements to ensure that the camera can clearly capture the outline of the crude oil inside the model.

[0069] Then, the injection well and production well of the visualized reservoir water drive oil production model were connected to the injection pump and the high-precision measuring cylinder respectively, and a water drive oil production simulation experiment was carried out based on the injection and production parameters. The image information of the water drive oil production simulation experiment was collected through the image acquisition equipment.

[0070] In this embodiment, the injection well of the model is connected to the injection pump, and the production well is connected to a high-precision measuring cylinder, so that the injection and production flow, pressure and liquid collection can be accurately controlled during the experiment. According to the preset reservoir parameters and injection and production parameters, a water drive oil production simulation experiment is carried out. By adjusting the injection pump and the measuring cylinder, the water drive process in the experiment is simulated, including the liquid displacement and migration process.

[0071] Image acquisition equipment is used to capture image information of water flooding oil recovery simulation experiments in real time. These images can record the dynamic changes of crude oil inside the model and provide a basis for subsequent data analysis. Specifically, the camera of the image acquisition device can face the model directly, and there should be no distortion at the corners.

[0072] Furthermore, during the experiment, the data in the measuring cylinder can be continuously monitored to avoid data loss or errors during the liquid transfer process, ensuring the credibility and accuracy of the experimental results. In addition, the image acquisition device continuously records the video to ensure that all key dynamics during the experiment can be recorded. Subsequently, the key frames are extracted from the video for image data analysis to reduce the risk of data loss and misunderstanding.

[0073] Finally, simulated experimental data are generated based on the measurement data and image information of the high-precision measuring cylinder.

[0074] In this embodiment, detailed data of the water flooding oil recovery simulation experiment are generated based on the measurement data of the high-precision graduated cylinder and the collected image information. Analysis of these data can reveal information such as water flooding sweep rules and displacement efficiency, and evaluate the effect of the simulation experiment and the accuracy of the model.

[0075] Finally, the simulation experiment data is processed to determine the water drive sweep law information and water drive sweep degree information in the water drive oil production process corresponding to the water drive oil production simulation experiment.

[0076] When processing simulation experiment data, the processing methods used may include data cleaning, correction and integration to determine the accuracy and consistency of the simulation experiment data.

[0077] The processed simulation experimental data are used to analyze the laws and degree information of the water drive oil recovery process. This includes determining the water drive sweep law, that is, the distribution and movement path of the water drive liquid in the reservoir, and the water drive sweep degree, that is, the degree of influence of the water drive effect on the reservoir recovery rate.

[0078] Through the above detailed steps and explanations, we can more clearly understand the overall process of reservoir water drive oil production model construction, simulation experiments and data processing, as well as the importance and logical relationship of each step in reservoir development.

[0079] The following is a detailed description of the method for preparing a visualized reservoir water flooding oil production model provided by an embodiment of the present invention in conjunction with the accompanying drawings.

[0080] Figure 2 A flowchart of a method for preparing a visualized reservoir water flooding oil production model provided by an exemplary embodiment of the present invention. In this embodiment, the visualized reservoir water flooding oil production model includes a visualized shell and a quartz sand filling layer, the quartz sand filling layer is arranged in the visualized shell, and the visualized shell includes a first glass plate 1 and a second glass plate 2. Figure 2 , the method comprises the following steps.

[0081] Step S201, determining a reservoir simulation morphology corresponding to a visualized reservoir water drive production model according to the reservoir morphology and reservoir parameters.

[0082] The specific shape and size of the visualized reservoir water-drive oil production model can be determined according to the shape and reservoir parameters of the target reservoir. Specifically, determining the shape of the visualized reservoir water-drive oil production model is a key starting point. According to the actual shape and important parameters of the target reservoir, such as the geometry of the reservoir, the well pattern layout, and the formation characteristics, a model shape suitable for the experimental needs is designed. Through appropriate scale scaling, the real reservoir conditions are appropriately simulated in the laboratory environment to ensure the comparability and scientificity of the experimental results.

[0083] Optionally, when determining the reservoir simulation morphology, the design is first performed based on the actual reservoir morphology, but for the simplicity and controllability of the experiment, the complex reservoir morphology needs to be simplified, for example, the potato-shaped sand reservoir morphology can be simplified to an ellipse, the fault part can be simplified to a straight line, etc. This simplified design helps to more clearly observe and analyze the basic laws of the water drive oil production process in the experiment.

[0084] Step S202 , engraving edge notches 3 corresponding to the reservoir simulation morphology on the first glass plate 1 and the second glass plate 2 , respectively, and the edge notches 3 on the first glass plate 1 and the edge notches 3 on the second glass plate 2 are symmetrically arranged.

[0085] The edge notches 3 are precisely engraved on the first glass plate 1 and the second glass plate 2. These notches are not only used to position and align the glass plates, but also to ensure the structural stability of the model during assembly. The depth and distance of the notches need to be precisely controlled to ensure that the glass plates can be properly docked and fixed in subsequent process steps. In this embodiment, the schematic diagram of the edge notches 3 of the first glass plate 1 is as follows: Figure 3 As shown, the schematic diagram of the edge notch 3 of the second glass plate 2 is as shown in Figure 4 shown.

[0086] Optionally, the depth of the edge score 3 on the first glass plate 1 and the second glass plate 2 ranges from 1 mm to 1.5 mm, and the distance between the edge score 3 and the edge of the first glass plate 1 and the edge of the second glass plate 2 ranges from more than 20 mm.

[0087] Among them, the material of the first glass plate 1 and the second glass plate 2 is ultra-white glass to ensure transparency and observation effect; the diameter of the first glass plate 1 and the second glass plate 2 is less than 300 mm, and the thickness of the first glass plate 1 and the second glass plate 2 is 10 mm to 20 mm to ensure structural strength and stability.

[0088] Step S203 , a plurality of boreholes corresponding to the well locations of the target oil reservoir are opened on the first glass plate 1 , and stainless steel capillaries 4 are fixed in the plurality of boreholes, with one end of the stainless steel capillary 4 being flush with the side of the first glass plate 1 having the edge notch 3 .

[0089] A plurality of holes are drilled on the first glass plate 1, and stainless steel capillaries 4 are fixed in these holes. These capillaries 4 simulate the wellbore in the oil reservoir and play the role of water injection and oil production. The precise fixation of the capillaries 4 ensures the accuracy of the liquid flow inside the model and the reliability of the experimental data. In this embodiment, the schematic diagram of the capillaries 4 of the first glass plate 1 is as follows: Figure 5 shown.

[0090] Optionally, the diameter of the borehole is comprised between 2 mm and 3 mm, ensuring that it is large enough to accommodate the capillary 4, and the capillary 4 is fixed accurately to each borehole to simulate the wellbore and capillary 4 structure in the oil reservoir.

[0091] In practical applications, a drill bit with a diameter of 2 to 3 mm can be used to drill a hole on the first glass plate 1, and a hole can be drilled on one side of the notch to ensure that the position of the capillary 4 is consistent with the well position designed in the model. The capillary 4 can be initially fixed with UV shadowless glue, and then reinforced with high-strength glue to ensure that the capillary 4 is firmly fixed and does not affect the flow of fluid in the experiment.

[0092] Step S204 , a quartz sand filling layer is provided in the edge scoring 3 region of the first glass plate 1 and the second glass plate 2 , and the quartz sand filling layer is fixedly provided on the side of the first glass plate 1 and the second glass plate 2 having the edge scoring 3 .

[0093] Quartz sand is evenly filled in the edge notch 3 area of ​​the first glass plate 1 and the second glass plate 2. The quartz sand filling layer not only provides the function of simulating the pore structure of the formation, but also can affect the fluid seepage behavior in the experiment. The design of the filling layer should be adjusted according to the permeability and permeability required by the simulation experiment to ensure the accuracy and repeatability of the experimental results.

[0094] Optionally, during the sand filling process, a proper amount of resin glue can be applied on the side of the glass plate with the notch. The thickness of the resin glue can be within 1 mm to ensure the tight bonding between the quartz sand filling layer and the glass plate. Before the resin glue is cured, quickly and evenly spread the quartz sand on the glue and press it. After waiting for the resin glue to cure, brush off the excess quartz sand that is not stuck, then scrape off the resin glue outside the notch along the notch, and remove the glue at the 4 mouths of the embedded stainless steel capillary to ensure that the capillary 4 is unobstructed.

[0095] The mesh number of the quartz sand filling layer is determined according to the preset permeability of the water drive oil production simulation experiment. Different mesh numbers of quartz sand correspond to different permeabilities and sealing strip diameters. The selection of quartz sand is determined according to the model permeability required in the experimental design. High-purity quartz sand is used to ensure accurate simulation of the internal permeability of the model.

[0096] The corresponding relationship between the quartz sand mesh number and the model permeability is shown in the following Table 1:

[0097] Table 1 Corresponding relationship between quartz sand mesh number and permeability in the model

[0098]

[0099]

[0100] Step S205 , covering the second glass plate 2 on the first glass plate 1 , with the quartz sand filling layer on the second glass plate 2 being flush with the edge of the quartz sand filling layer on the first glass plate 1 .

[0101] After the sand filling is completed, the two glass plates are placed together with their sand-filled sides facing each other, so that the notches are completely aligned, and then the two glass plates are fixed with a clamp, but not fixed to the tightest degree. This step requires precise alignment to ensure the closure of the model and stability during the experiment.

[0102] Step S206 , providing a sealing strip on the periphery of the quartz sand filling layer so that the quartz sand filling layer forms a closed area, and the sealing strip is provided between the first glass plate 1 and the second glass plate 2 .

[0103] A sealing strip is arranged on the periphery of the quartz sand filling layer to completely seal the gap between the first glass plate 1 and the second glass plate 2. The diameter of the sealing strip can be dynamically adjusted according to the selected quartz sand mesh number so that the quartz sand filling layer between the first glass plate 1 and the second glass plate 2 is in close contact. Optionally, the diameter of the sealing strip can include 1.5 mm to 3 mm. This not only prevents liquid leakage during the experiment, but also ensures the stability of the internal environment of the model and the reliability of the experimental data.

[0104] In practical applications, after the first glass plate 1 and the second glass plate 2 are initially fixed, a silicone foam strip can be pushed in between the two glass plates until the silicone strip contacts the resin glue in the glass plates and is stuck in the notch. The diameter of the silicone strip needs to be slightly larger than the gap between the glass plates. In this way, the silicone strip is used to surround the sand body area completely, and the silicone strip is filled again in all non-linear areas of the sand body for secondary fixation.

[0105] Step S207, injecting crude oil into the quartz sand filling layer, and determining the filling volume of the crude oil.

[0106] Crude oil is injected into the appropriate locations of the model to fill the gaps in the model to simulate the oil content of the reservoir in the experiment. The process of injecting crude oil requires strict control of the amount and viscosity of the crude oil to ensure the normal movement of the liquid inside the model and the accuracy of the experimental data.

[0107] In practical applications, after the closure is completed, one of the capillaries 4 on the edge of the model can be connected to the vacuum pump, the other capillaries 4 can be closed and the vacuum pump can be turned on. After the reading of the vacuum pressure gauge is stably lower than 0.01MPa for more than five minutes, the capillary 4 farthest from the capillary 4 connected to the vacuum pump is connected to pure water and opened to saturate the inside of the model with water, and then the vacuum pump is turned off first, and then all the capillaries 4 are closed. Prepare the crude oil of corresponding viscosity according to the model design. If the viscosity exceeds the required value, it can be diluted with kerosene or diesel. The required crude oil needs to be prepared on the spot. Open the capillary 4 at one end of the model and the capillary 4 farthest from it, connect one of the injection pumps filled with crude oil and start it, so that the model is saturated with oil, and determine the total oil-containing volume inside the model by the volume of water displaced. If it is necessary to simulate an oil reservoir with oil-wet rock wettability, the model needs to be placed for more than 72 hours before the experiment, otherwise the experiment needs to be completed within 24 hours.

[0108] The visualized reservoir water drive oil production method provided by the embodiment of the present invention is further described in detail below in conjunction with specific embodiments.

[0109] This method is aimed at visually simulating unconventional reservoirs. It is assumed that the reservoir in this embodiment is a rectangular strip-shaped sand body.

[0110] Reservoir morphology simplification and model design:

[0111] According to the geophysical data, the specific sand body morphology inside the reservoir is understood and simplified to a certain extent. In this case, the sand body morphology of the oil reservoir is simplified to an approximate rectangle with a long side curvature close to 0, so the designed model is a rectangular strip sand body. In order to ensure the controllability and stability of the experiment, the model size is set to 20×10cm, while maintaining a ratio of long side to short side of 2:1, which can avoid damage caused by insufficient model strength and stress concentration.

[0112] Optimal design of water injection parameters:

[0113] Based on previous physical simulation experience and actual production data, standard water injection parameters suitable for this type of model were determined. In this example, a water injection rate of 0.5 mL per minute was selected. This parameter can accurately reproduce the water injection conditions in the actual water flooding oil production process in the simulation experiment, thereby effectively evaluating the water flooding effect of the model.

[0114] Experimental process and data analysis:

[0115] During the experiment, image recognition software was used to record and analyze each stage of the water flooding process. By analyzing the sweep coefficient at different stages, that is, the degree of diffusion of the oil-water interface within the model, the efficiency of water flooding and the response of the reservoir can be evaluated. At the same time, the changes in oil volume and water volume were recorded and counted, and the water content and recovery degree of the model were calculated to further evaluate the effectiveness of water flooding.

[0116] Comprehensive analysis and conclusion:

[0117] Finally, by comprehensively analyzing the data of sweep coefficient, water content and recovery degree and comparing them with the actual production data, we can comprehensively evaluate the effect of water drive oil recovery under the sand body morphology. These data and analysis results provide an important scientific basis for optimizing reservoir development and production management.

[0118] In this embodiment, the water flooding process is analyzed by image recognition software to obtain the sweep coefficients at several cumulative water injection volumes during the water flooding process. The corresponding relationship between the cumulative water injection volume and the sweep coefficient is as follows: Figure 6 As shown in the figure, the horizontal axis is the cumulative water injection volume and the vertical axis is the sweep coefficient.

[0119] By counting the total volume of pores in the model at the oil saturated stage, that is, the total volume of oil in the model, combined with the record of the volume of oil produced by water drive and the volume of water produced, the water drive water cut and the degree of recovery of the model can be calculated. The corresponding relationship between the cumulative water injection volume and the water drive water cut is as follows: Figure 7 As shown in the figure, the horizontal axis is the cumulative water injection volume, and the vertical axis is the water content of water drive. The corresponding relationship between the cumulative water injection volume and the degree of recovery is as follows: Figure 8 As shown in the figure, the horizontal axis is the cumulative water injection volume and the vertical axis is the degree of production.

[0120] Through comprehensive analysis and comparison of sweep coefficient, water content and recovery degree, the water flooding effect of the reservoir under this sand body morphology can be evaluated.

[0121] Based on the above-mentioned visualized reservoir water drive oil production simulation method provided by the embodiment of the present invention, the embodiment of the present invention also provides a visualized reservoir water drive oil production simulation device. Fig. 9 As shown, the visualized reservoir water drive oil production simulation device includes a construction module 901, an experiment module 902 and a processing module 903.

[0122] A construction module 901 is used to construct a visualized reservoir water drive oil production model according to the reservoir morphology and reservoir parameters of the target reservoir, wherein the visualized reservoir water drive oil production model comprises a visualized shell and a quartz sand filling layer, wherein the quartz sand filling layer is arranged in the visualized shell;

[0123] The experiment module 902 is used to perform a water drive oil production simulation experiment through a visualized oil reservoir water drive oil production model according to the injection and production parameters corresponding to the oil reservoir parameters, so as to generate simulation experiment data;

[0124] The processing module 903 is used to process the simulation experiment data to determine the water drive sweep law information and water drive sweep degree information in the water drive oil production process corresponding to the water drive oil production simulation experiment.

[0125] Optionally, the visualization housing includes a first glass plate and a second glass plate.

[0126] The construction module 901 is specifically used to determine the reservoir simulation form corresponding to the visualized reservoir water drive oil production model according to the reservoir form and reservoir parameters; respectively carve edge notches corresponding to the reservoir simulation form on the first glass plate and the second glass plate, and the edge notches on the first glass plate and the edge notches on the second glass plate are symmetrically arranged; a plurality of boreholes corresponding to the well locations of the target reservoir are opened on the first glass plate, and stainless steel capillaries are fixed in the plurality of boreholes, and one end of the stainless steel capillaries is flush with the side of the first glass plate with the edge notches; a quartz sand filling layer is arranged in the edge notch area of ​​the first glass plate and the second glass plate, and the quartz sand filling layer is fixedly arranged with the side of the first glass plate and the second glass plate with the edge notches; the second glass plate is covered on the first glass plate, and the quartz sand filling layer on the second glass plate is flush with the edge of the quartz sand filling layer on the first glass plate; a sealing strip is arranged on the periphery of the quartz sand filling layer so that the quartz sand filling layer forms a closed area, and the sealing strip is arranged between the first glass plate and the second glass plate; crude oil is injected into the quartz sand filling layer, and the filling volume of the crude oil is determined.

[0127] Optionally, the first glass plate and the second glass plate are made of ultra-white glass, the diameters of the first glass plate and the second glass plate are less than 300 mm, and the thicknesses of the first glass plate and the second glass plate are 10 mm to 20 mm.

[0128] Optionally, the depth of the edge score on the first glass plate and the second glass plate ranges from 1 mm to 1.5 mm, and the distance between the edge score and the edge of the first glass plate and the edge of the second glass plate ranges from more than 20 mm.

[0129] Optionally, the diameter of the drilled hole is comprised between 2 mm and 3 mm.

[0130] Optionally, the number of quartz sand meshes of the quartz sand filling layer is determined according to a preset permeability of a water flooding oil production simulation experiment, and different numbers of quartz sand meshes correspond to different permeabilities and sealing strip diameters.

[0131] Optionally, the experimental module 902 is specifically used to place the visualized oil reservoir water drive oil production model on the experimental platform, so as to adjust the visualized oil reservoir water drive oil production model to a preset experimental angle through the experimental platform; connect the injection well and the production well of the visualized oil reservoir water drive oil production model to the injection pump and the high-precision measuring cylinder respectively, conduct a water drive oil production simulation experiment based on the injection and production parameters, and collect image information of the water drive oil production simulation experiment through the image acquisition device; generate simulation experiment data based on the measurement data and image information of the high-precision measuring cylinder.

[0132] An embodiment of the present invention further provides an electronic device, comprising: at least one processor; and a memory in communication with the at least one processor. The memory stores a computer program executable by the at least one processor, and when the computer program is executed by the at least one processor, the electronic device executes the method of the embodiment of the present invention.

[0133] An embodiment of the present invention further provides a non-transitory machine-readable medium storing a computer program, wherein the computer program, when executed by a processor of a computer, is used to cause the computer to execute the method of the embodiment of the present invention.

[0134] An embodiment of the present invention further provides a computer program product, including a computer program, wherein the computer program, when executed by a processor of a computer, is used to enable the computer to execute the method of the embodiment of the present invention.

[0135] refer to Fig.10 , a block diagram of an electronic device that can be used as a server or client of an embodiment of the present invention will now be described, which is an example of a hardware device that can be applied to various aspects of the present invention. Electronic devices are intended to represent various forms of digital electronic computer devices, such as laptop computers, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. Electronic devices can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0136] like Fig.10 As shown, the electronic device includes a computing unit 1001, which can store data stored in a read-only memory (ROM)

[0137] The computer program in the computing unit 1001, the ROM 1002 or the computer program loaded from the storage unit 1008 into the random access memory (RAM) 1003 is used to perform various appropriate actions and processes. In the RAM 1003, various programs and data required for the operation of the electronic device can also be stored. The computing unit 1001, the ROM 1002 and the RAM 1003 are connected to each other via a bus 1004. An input / output (I / O) interface 1005 is also connected to the bus 1004.

[0138] Multiple components in the electronic device are connected to the I / O interface 1005, including: an input unit 1006, an output unit 1007, a storage unit 1008, and a communication unit 1009. The input unit 1006 can be any type of device that can input information to the electronic device, and the input unit 1006 can receive input digital or character information, and generate key signal input related to user settings and / or function control of the electronic device. The output unit 1007 can be any type of device that can present information, and can include but is not limited to a display, a speaker, a video / audio output terminal, a vibrator, and / or a printer. The storage unit 1008 can include but is not limited to a disk, an optical disk. The communication unit 1009 allows the electronic device to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks, and can include but is not limited to a modem, a network card, an infrared communication device, a wireless communication transceiver, and / or a chipset, such as a Bluetooth device, a WiFi device, a WiMax device, a cellular communication device, and / or the like.

[0139] The computing unit 1001 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the computing unit 1001 include, but are not limited to, a CPU, a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various computing units running machine learning model algorithms, digital signal processors (DSPs), and any appropriate processors, controllers, microcontrollers, etc. The computing unit 1001 performs the various methods and processes described above. For example, in some embodiments, the method embodiments of the present invention may be implemented as a computer program, which is tangibly contained in a machine-readable medium, such as a storage unit 1008. In some embodiments, part or all of the computer program may be loaded and / or installed on an electronic device via ROM 1002 and / or communication unit 1009. In some embodiments, the computing unit 1001 may be configured to perform the above-described method in any other appropriate manner (e.g., by means of firmware).

[0140] The computer programs for implementing the methods of the embodiments of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor or controller of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer programs are executed by the processor or controller, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer programs may be executed entirely on the machine, partially on the machine, partially on the machine as a stand-alone software package and partially on a remote machine, or entirely on a remote machine or server.

[0141] In the context of an embodiment of the present invention, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or equipment. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable signal medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or equipment, or any suitable combination of the foregoing. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0142] It should be noted that the term "including" and its variations used in the embodiments of the present invention are open inclusions, that is, "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments". The modifications of "one" and "multiple" mentioned in the embodiments of the present invention are illustrative rather than restrictive. Those skilled in the art should understand that unless the context clearly indicates otherwise, it should be understood as "one or more".

[0143] The user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in the embodiments of the present invention are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant laws, regulations and standards of relevant countries and regions, and provide corresponding operation entrances for users to choose to authorize or refuse.

[0144] The various steps described in the method implementation methods provided in the embodiments of the present invention may be performed in different orders and / or in parallel. In addition, the method implementation methods may include additional steps and / or omit the steps shown. The scope of protection of the present invention is not limited in this respect.

[0145] The term "embodiment" in this specification refers to specific features, structures or characteristics described in conjunction with the embodiment that can be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily mean the same embodiment, nor does it mean that it is mutually exclusive with other embodiments and is independent or optional. The various embodiments in this specification are described in a related manner, and the same or similar parts between the various embodiments refer to each other. In particular, for the device, equipment, and system embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts refer to the partial description of the method embodiment.

[0146] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of patent protection. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the attached claims.

Claims

1. A visual reservoir water flooding oil production simulation method, characterized in that: include: Constructing a visualized reservoir water drive oil production model according to the reservoir morphology and reservoir parameters of the target reservoir, wherein the visualized reservoir water drive oil production model comprises a visualized shell and a quartz sand filling layer, wherein the quartz sand filling layer is arranged in the visualized shell; According to the injection and production parameters corresponding to the reservoir parameters, a water drive oil production simulation experiment is performed through the visualized reservoir water drive oil production model to generate simulation experiment data; The simulation experiment data are processed to determine water drive sweep law information and water drive sweep degree information in the water drive oil production process corresponding to the water drive oil production simulation experiment.

2. The method according to claim 1, characterized in that: The visualization housing includes a first glass plate and a second glass plate; The method of constructing a visualized reservoir water drive oil production model according to the reservoir morphology and reservoir parameters of the target reservoir includes: Determine the reservoir simulation form corresponding to the visualized reservoir water drive oil production model according to the reservoir form and the reservoir parameters; Carving edge notches corresponding to the simulated reservoir shape on the first glass plate and the second glass plate respectively, wherein the edge notches on the first glass plate and the edge notches on the second glass plate are symmetrically arranged; A plurality of boreholes corresponding to the well positions of the target oil reservoir are opened on the first glass plate, and stainless steel capillaries are fixed in the plurality of boreholes, with one end of the stainless steel capillary being flush with the side of the first glass plate having the edge notch; The quartz sand filling layer is arranged in the edge scoring area of ​​the first glass plate and the second glass plate, and the quartz sand filling layer is fixedly arranged on the side of the first glass plate and the second glass plate having the edge scoring; Covering the second glass plate on the first glass plate, wherein the quartz sand filling layer on the second glass plate is flush with the edge of the quartz sand filling layer on the first glass plate; A sealing strip is arranged at the periphery of the quartz sand filling layer so that the quartz sand filling layer forms a closed area, and the sealing strip is arranged between the first glass plate and the second glass plate; Crude oil is injected into the quartz sand filling layer, and the filling volume of the crude oil is determined.

3. The method according to claim 2, characterized in that The first glass plate and the second glass plate are made of ultra-white glass, the diameters of the first glass plate and the second glass plate are less than 300 mm, and the thicknesses of the first glass plate and the second glass plate are in a range of 10 mm to 20 mm.

4. The method according to claim 2, characterized in that: The depth of the edge score on the first glass plate and the second glass plate ranges from 1 mm to 1.5 mm, and the distance between the edge score and the edge of the first glass plate and the edge of the second glass plate ranges from more than 20 mm.

5. The method according to claim 2, characterized in that: The diameter of the drilled hole is comprised between 2 mm and 3 mm.

6. The method according to claim 2, characterized in that The number of quartz sand meshes of the quartz sand filling layer is determined according to the preset permeability of the water flooding oil production simulation experiment, and different numbers of quartz sand meshes correspond to different permeabilities and sealing strip diameters.

7. The method according to claim 1, characterized in that The method of performing a water drive oil production simulation experiment through the visualized oil reservoir water drive oil production model according to the injection and production parameters corresponding to the oil reservoir parameters to generate simulation experiment data includes: Placing the visualized oil reservoir water drive oil production model on an experimental platform, so as to adjust the visualized oil reservoir water drive oil production model to a preset experimental angle through the experimental platform; The water injection well and the production well of the visualized reservoir water drive oil production model are connected to an injection pump and a high-precision measuring cylinder respectively, the water drive oil production simulation experiment is performed based on the injection and production parameters, and image information of the water drive oil production simulation experiment is collected by an image acquisition device; The simulation experiment data is generated based on the measurement data of the high-precision measuring cylinder and the image information.

8. A visual reservoir water drive oil production simulation device, characterized in that: include: A construction module, used for constructing a visualized reservoir water drive oil production model according to the reservoir morphology and reservoir parameters of the target reservoir, wherein the visualized reservoir water drive oil production model comprises a visualized shell and a quartz sand filling layer, wherein the quartz sand filling layer is arranged in the visualized shell; An experimental module, used for performing a water drive oil production simulation experiment through the visualized oil reservoir water drive oil production model according to the injection and production parameters corresponding to the oil reservoir parameters, so as to generate simulation experiment data; The processing module is used to process the simulation experiment data to determine the water drive sweep law information and water drive sweep degree information in the water drive oil production process corresponding to the water drive oil production simulation experiment.

9. An electronic device, comprising: A processor, and a memory storing a program, wherein the program comprises instructions which, when executed by the processor, cause the processor to perform the method according to any one of claims 1 to 7.

10. A non-transitory machine-readable medium storing computer instructions, wherein: The computer instructions are used to cause the computer to execute the method according to any one of claims 1 to 7.

Images