A salt cavern single-cavity sediment desalination simulation device and a sediment desalination method

Abstract

The application relates to a salt cave single-cavity sediment brine discharge simulation device and a sediment brine discharge method. The device comprises an air source, a partial pressure gauge, a gas flow meter, a transparent visualized cavity, a pressure gauge, a pressure pump, a back pressure valve, a liquid flow meter and a measuring cylinder. The air source, the partial pressure gauge and the gas flow meter are sequentially communicated, the gas flow meter is communicated with the transparent visualized cavity, the pressure gauge, the back pressure valve and the pressure pump are respectively communicated with the transparent visualized cavity, the back pressure valve, the liquid flow meter and the measuring cylinder are sequentially communicated, and the transparent visualized cavity is a sealed cavity. Through the device, the real environment of an actual underground cavity can be simulated, the bottom sediment after dissolution of the actual cavity can be obtained based on the device, accurate sediment brine discharge can be carried out, the utilization rate of the actual underground cavity is improved, and the engineering investment cost is reduced.

Description

Technical Field

[0001] This invention relates to the technical field of underground salt cavern construction process, and more specifically, to a single-chamber salt cavern sediment discharge simulation device and sediment discharge method. Background Technology

[0002] Salt cavern gas storage facilities are typically built upon layered salt formations with high insoluble content. During construction, as the salt rock dissolves, the insoluble matter within the salt layers and interlayers is released, settling as small particles and lumps at the bottom of the cavity, forming sediment. After the dissolution process, the gas storage facility uses a gas injection and brine drainage method to remove the brine from the top of the sediment, allowing the sediment space to be used for gas storage. Statistics show that the sediment volume accounts for an average of 46.8% of the total cavity volume, indicating that nearly half of the space within the salt cavity is occupied by sediment and the filling brine. The brine in the sediment space also causes the natural gas stored in the gas storage facility to contain water. If this water cannot be effectively drained, it will corrode the salt cavern gas storage equipment and pipelines, and also affect the gas demand of natural gas users.

[0003] Under current technological conditions, it is difficult to remove sediment from the bottom of the cavity, which reduces the utilization rate of the cavity and increases the engineering investment cost. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a single-chamber salt cavern sedimentation and brine discharge simulation device and a sedimentation and brine discharge method, which aims to solve at least one of the above-mentioned technical problems.

[0005] In a first aspect, the technical solution of the present invention to solve the above-mentioned technical problems is as follows: a salt cavern single-chamber sediment discharge simulation device, comprising a gas source, a pressure gauge, a gas flow meter, a transparent visualization cavity, a pressure gauge, a pressurizing pump, a back pressure valve, a liquid flow meter, and a measuring cylinder;

[0006] The gas source, pressure gauge, and gas flow meter are connected in sequence. The gas flow meter is connected to the transparent visualization cavity. The pressure gauge, back pressure valve, and pressurizing pump are connected to the transparent visualization cavity. The back pressure valve, liquid flow meter, and measuring cylinder are connected in sequence. The transparent visualization cavity is a sealed cavity.

[0007] The beneficial effects of this invention are as follows: the salt cavern single-chamber sediment discharge simulation device provided in this application can realistically simulate the actual environment of the actual underground cavity, including the pressure and gas flow rate in the actual underground cavity. Therefore, based on this device, the bottom sediment after dissolution of the actual cavity can be obtained and accurate sediment discharge can be performed, thereby improving the utilization rate of the actual underground cavity and reducing engineering investment costs.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the gas source, pressure gauge, gas flow meter, transparent visualization cavity, pressure gauge and pressurization pump are connected by pressure-resistant stainless steel pipelines.

[0010] Furthermore, the back pressure valve, the liquid flow meter, and the measuring cylinder are connected by a transparent flexible tube.

[0011] Secondly, in order to solve the above-mentioned technical problems, the present invention also provides a method for sludge desalination using a salt cavern single-chamber sludge desalination simulation device as described in the first aspect, the method comprising:

[0012] The product to be processed is placed into the transparent visualization cavity, and the product to be processed includes brine and sediment.

[0013] The salt cavern single-chamber sediment discharge simulation device was used to simulate the real environment inside the salt cavern cavity, and the saturated sediment density and brine density of the sediment under the simulated real environment were obtained.

[0014] Based on the measured saturated sediment density and the brine density, the stress borne by the sediment in the transparent visualization cavity is determined.

[0015] The product to be treated is subjected to hydraulic fracturing using the stress, so that the brine is discharged from the transparent and visible cavity into the measuring cylinder, resulting in crushed sediment.

[0016] Thirdly, in order to solve the above-mentioned technical problems, the present invention also provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the sludge discharge method of the present application.

[0017] Fourthly, in order to solve the above-mentioned technical problems, the present invention also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the sludge desalination method of the present application.

[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of this application. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof. To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings described below are merely embodiments of the present invention, and those skilled in the art can obtain other drawings based on the provided drawings.

[0020] Figure 1 This is a schematic diagram of a single-chamber salt cavern sediment discharge simulation device according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of a transparent, visual cavity provided in one embodiment of the present invention;

[0022] Figure 3 This is a schematic flowchart of a method for removing brine from sediment according to an embodiment of the present invention;

[0023] Figure 4 A roadmap for physical simulation technology of sludge brine discharge is provided in one embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of an electronic device provided in one embodiment of the present invention. Detailed Implementation

[0025] The principles and features of the present invention are described below. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0026] The technical solution of the present invention and how the technical solution of the present invention solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0027] While exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0028] The solution provided in this invention can be applied to any application scenario that requires sludge discharge and brine simulation experiments.

[0029] This invention provides a possible implementation, such as... Figure 1 As shown, a schematic diagram of a single-chamber salt cavern sedimentation and brine discharge simulation device is provided. Figure 1 The schematic diagram shown indicates that the device may include a gas source 1, a pressure gauge 2, a gas flow meter 3, a transparent visual cavity 4, a pressure gauge 5, a pressurizing pump 6, a back pressure valve 7, a liquid flow meter 8, and a measuring cylinder 9.

[0030] The gas source 1, pressure gauge 2 and gas flow meter 3 are connected in sequence. The gas flow meter 3 is connected to the transparent visualization cavity 4. The pressure gauge 5, back pressure valve 7 and pressurizing pump 6 are respectively connected to the transparent visualization cavity 4. The back pressure valve 7, liquid flow meter 8 and measuring cylinder 9 are connected in sequence. The transparent visualization cavity 4 is a sealed cavity.

[0031] The salt cavern single-chamber sediment discharge simulation device provided in this application can realistically simulate the actual environment of the underground cavity, including the pressure and gas flow rate in the actual underground cavity. Based on this device, the bottom sediment after dissolution of the actual cavity can be obtained and the sediment discharge can be accurately carried out, thereby improving the utilization rate of the actual underground cavity and reducing the engineering investment cost.

[0032] The following specific embodiments further illustrate the solution of the present invention. In this embodiment, a single-chamber sludge discharge simulation device for salt caverns is provided, including a gas source 1, a pressure gauge 2, a gas flow meter 3, a transparent visualization cavity 4, a pressure gauge 5, a pressurizing pump 6, a back pressure valve 7, a liquid flow meter 8, and a measuring cylinder 9.

[0033] The gas source 1, pressure gauge 2 and gas flow meter 3 are connected in sequence. The gas flow meter 3 is connected to the transparent visualization cavity 4. The pressure gauge 5, back pressure valve 7 and pressurizing pump 6 are respectively connected to the transparent visualization cavity 4. The back pressure valve 7, liquid flow meter 8 and measuring cylinder 9 are connected in sequence. The transparent visualization cavity 4 is a sealed cavity.

[0034] Among them, the transparent visualization cavity 4 is an openable cavity. When opened, the product to be processed is placed into the cavity, and when closed, it forms a sealed cavity.

[0035] Optionally, the transparent visualization cavity 4 can be a brine discharge cavity with a geometrically similar design based on the actual size and dimensions of the underground cavity.

[0036] As an example, see Figure 2 The diagram shows the structure of the transparent visualization cavity 4. The transparent visualization cavity 4 (also called a container) has an inner radius of 75mm, an inner height of 300mm, and can withstand a maximum pressure of 1.5Mpa.

[0037] Optionally, the above-mentioned transparent visualization cavity 4 is made of a transparent visualization pressure-resistant material, and the transparent visualization cavity 4 is used as a simulation cavity for the brine discharge experiment.

[0038] Optionally, the gas source 1, pressure gauge 2, gas flow meter 3, transparent visualization cavity 4, pressure gauge 5 and pressurization pump 6 are connected by pressure-resistant stainless steel pipelines.

[0039] Optionally, the back pressure valve 7, the liquid flow meter 8, and the measuring cylinder 9 are connected by a transparent flexible tube.

[0040] The functions of the above-mentioned devices are:

[0041] Gas source 1: can be an air compressor / compressed gas cylinder, which can provide gas at 5-10 MPa, and thus provide air to the transparent and visible cavity 4;

[0042] Pressure gauge 2: It can be a multi-stage pressure gauge, which can accurately adjust the pressure from 0 to 1 MPa with an error of ±0.01 MPa;

[0043] Connection lines: can be pressure-resistant stainless steel lines, capable of withstanding a minimum pressure of 10MPa;

[0044] Pressure gauge 5: Range 0~2.5MPa, used to measure the pressure borne by various components;

[0045] Pressure pump 6: can pressurize the liquid inside the transparent and visible cavity 4 (can apply fine pressure and display readings);

[0046] Gas-liquid flow meters (gas flow meter 3 and liquid flow meter 8): capable of passing through both gas and liquid fluids, and accurately measuring the flow rate of at least one of the fluids;

[0047] Transparent flexible tube: allows you to clearly see the liquid flow;

[0048] Back pressure valve 7: can control the pressure at the outlet of the brine to simulate actual working conditions;

[0049] The aforementioned device can accurately simulate the real environment of an actual underground cavity. This includes adjusting the gas flow rate within the transparent, visual cavity 4 using gas source 1 and gas flow meter 3, and adjusting the gas pressure within the transparent, visual cavity 4 using pressure gauges 5 and pressure divider gauges 2. The device features a modular design, with some components connected by pressure-resistant stainless steel pipelines. Each component can be replaced with different specifications according to experimental needs. Statistical data can be recorded using video equipment such as mobile phones or cameras, eliminating the need for computer data entry, thus reducing experimental costs and ensuring the accuracy and versatility of the experiment.

[0050] Based on the above-mentioned single-chamber salt cavern sedimentation and brine discharge simulation device, see [link to relevant documentation]. Figure 3 and Figure 4 This solution also provides a method for removing brine from sediment, including the following steps:

[0051] S10, the product to be processed is placed into the transparent visualization cavity 4, the product to be processed includes brine and sediment;

[0052] The product to be processed is obtained by simulating a real mixture in an actual underground cavity, which includes brine and sediment.

[0053] Optionally, the product to be processed is determined in the following way:

[0054] At least one original rock sample taken from a stratum is repeatedly soaked in fresh water (for about a month) until the soluble components in the original rock sample are completely dissolved, thus obtaining the product to be processed.

[0055] S20, the salt cavern single-chamber sediment discharge simulation device is used to simulate the real environment inside the salt cavern cavity, and the saturated sediment density and brine density of the sediment under the simulated real environment are obtained.

[0056] Among them, the measurement of saturated sediment density and brine density refers to the density of sediment and brine respectively located in the transparent and visualized cavity 4 under the simulated real environment.

[0057] S30, based on the measured saturated sediment density and the brine density, determine the stress borne by the sediment in the transparent visualization cavity 4;

[0058] Alternatively, one implementation of S30 above is as follows:

[0059] Based on Terzaghi's effective stress principle, the saturated sediment density, and the brine density, the stress σ (also known as effective self-weight stress) borne by the sediment in the transparent visualization cavity 4 is determined as follows:

[0060] σ=(ρ s -ρ b )gH

[0061] Where, ρ s To measure the density of saturated sediment, kg / m³ 3 The laboratory measurement value is 2135 kg / m³. 3 ;ρ b The density of the brine is taken as 1200 kg / m³. 3 g is the acceleration due to gravity, taken as 9.8 m / s². 2 .

[0062] S40, the stress is used to hydraulically fracturing the product to be treated so that the brine is discharged from the transparent and visible cavity 4 into the measuring cylinder 9 to obtain the crushed sediment.

[0063] Specifically, a pressure corresponding to the stress can be applied to the product to be treated by a pressure pump 6, so that the brine is discharged from the transparent visualization cavity 4 into the measuring cylinder 9. The discharged brine can also be measured by a liquid flow meter 8 and the measuring cylinder 9.

[0064] Optionally, the method further includes:

[0065] For each stratum, obtain the volume ratio between the first volume of the original rock sample corresponding to that stratum and the second volume of the sediment corresponding to that original rock sample;

[0066] For each formation, the corresponding volumetric residue rate is determined based on the corresponding volume ratio.

[0067] Furthermore, the method also includes:

[0068] The volume of the transparent visualization cavity is taken as a first proportion (e.g., 40%) of the volume of the sediment.

[0069] Based on the volumetric residue ratio corresponding to each formation, residue is added to fill the transparent visualization cavity, thereby simulating the actual cavity conditions of the formation as closely as possible.

[0070] Further, the step of filling the transparent visualization cavity with residue according to the volumetric residue ratio corresponding to each of the formations includes:

[0071] Based on the volumetric residue rate corresponding to each of the strata, and in accordance with the volumetric residue rate and the stratigraphic sequence of each of the strata, residue is added to fill the transparent visualization cavity.

[0072] Furthermore, after drying a portion of the sediment from the original rock sample, particle size analysis (i.e., analyzing the size of sediment particles) can be performed using sieving to obtain the non-uniformity coefficient and curvature coefficient of the sediment. Another portion is filled into a sand-filling pipe and saturated with brine after vacuuming, and then subjected to water phase permeability testing (i.e., sediment vertical rhythm) and gas-water two-phase permeability testing (i.e., gas-water phase permeability experiment). The obtained data are used to plot the relationship between the gas-water two-phase permeability curve and water saturation according to Darcy's flow formula, in order to explore the law of change in the total amount of brine discharged and the gas-water interface during the brine discharge process.

[0073] The coefficient of non-uniformity (Cu) is an important engineering parameter reflecting the uniformity of particle size distribution in sludge particles. It is defined as the ratio of the limiting particle size (d60) to the effective particle size (d10). d60 represents the particle size that accounts for 60% of the sieve weight on the cumulative particle size curve, while d10 represents the particle size that accounts for 10% of the sieve weight.

[0074] The inhomogeneity coefficient quantifies the width of particle size distribution, thus helping engineers assess the engineering properties of particle aggregates. For sediment, the magnitude of the inhomogeneity coefficient reflects the uniformity of its particle size distribution and has a significant impact on the physical and mechanical properties and engineering applications of the sediment.

[0075] The formula for calculating the non-uniformity coefficient is: Cu = d60 / d10. Here, d60 and d10 are obtained through particle size analysis experiments, which typically include sieving and sedimentation methods. Sieving involves using a series of sieves with different apertures to separate the sediment, thus obtaining a particle mass distribution across different size ranges. Sedimentation utilizes the different settling velocities of particles in a liquid to separate particles of different sizes.

[0076] Relationship between the coefficient of non-uniformity and the properties of sediment:

[0077] Uniformity assessment: The smaller the non-uniformity coefficient, the more uniform the particle size distribution of the sediment; conversely, the larger the non-uniformity coefficient, the more non-uniform the particle size distribution.

[0078] Engineering Applications: In engineering applications of sediment, such as as building materials or fillers, it is necessary to understand the uniformity of its particle size distribution. The coefficient of uniformity can serve as an important indicator for evaluating its suitability. For example, in sandy soil, a large coefficient of uniformity may lead to piping under external forces, thus affecting soil stability. Similarly, for sediment, the impact of its coefficient of uniformity on stability and engineering applications needs to be considered.

[0079] The coefficient of curvature (Cc) is an important parameter with wide applications in various fields. It describes the curvature of a curve or surface and can also reflect the continuity of the slope of the cumulative particle size distribution curve of sediment particles. In geometry, the coefficient of curvature quantitatively expresses the degree to which a curve deviates from a straight line at a certain point; in the particle size analysis of sediment particles, it reflects the continuity of the slope of the cumulative particle size distribution curve.

[0080] In particle size analysis, the formula for calculating the curvature coefficient is: Cc=(d30 ^2) / (d60 × d10). Here, d10, d30, and d60 represent the particle size values at which the mass of the sediment less than this particle size accounts for 10%, 30%, and 60% of the total sediment mass respectively, and are also known as the effective particle size, intermediate particle size, and control particle size.

[0081] When Cc > 3, it usually indicates that the cumulative curve of particle size distribution is discontinuous, the particle size distribution of the sediment may be incomplete, and there are obvious particle size discontinuities or missing values.

[0082] When 1 < Cc ≤ 3, it indicates that the particle size distribution of the sediment is relatively complete and the curve slope is continuous, which is an ideal particle size grading state.

[0083] When Cc ≤ 1, although this situation is relatively rare in nature, if it occurs, it may mean that the particle size distribution is very concentrated and the curve is close to a straight line.

[0084] Through the brine drainage simulation experiment, sediment particle size analysis, sediment vertical rhythm analysis, and gas-water relative permeability experiment, the brine drainage pressure and time, gas channeling pressure and range, and the gas-water relative permeability law before and after gas channeling can be obtained correspondingly. Further, based on the above analysis results, the influence laws of brine drainage pressure and time on absolute permeability and gas-water relative permeability curve can be clarified, and the main controlling factors can be analyzed and the optimal brine drainage plan can be carried out to optimize the bottom well gas injection and brine drainage technology.

[0085] Among them, the sediment vertical rhythm usually refers to the regular change characteristics of the clastic particle size in the vertical direction (i.e., from top to bottom or from bottom to top) in sediments or sedimentary rocks. The existence of this rhythm is closely related to factors such as the strength of hydrodynamic force, sedimentary environment, and sedimentation mode.

[0086] Based on the sediment vertical rhythm, the influence on the reservoir can be further obtained

[0087] 1. Permeability distribution: The rhythmic distribution of particle size directly affects the vertical distribution law of reservoir permeability. In the positive rhythm, with the increase of depth, the permeability and porosity increase; while in the reverse rhythm, with the increase of depth, the permeability and porosity decrease.

[0088] 2. Water flooding development effect: The existence of rhythm will also affect the swept thickness and swept area during water flooding development. For example, in a positive rhythm reservoir, bottom water flooding is easily formed during the water injection development process, and the top becomes the remaining oil enrichment area; while in a reverse rhythm reservoir, top water flooding may occur.

[0089] To better illustrate and understand the principle of the method provided by this invention, the following description uses an optional specific embodiment to illustrate the solution of this invention. It should be noted that the specific implementation of each step in this specific embodiment should not be construed as a limitation of the solution of this invention. Other implementations that can be conceived by those skilled in the art based on the principle of the solution provided by this invention should also be considered within the scope of protection of this invention.

[0090] In this embodiment, a simulated underground salt cavern chamber with a height of 90 meters and a diameter of 30 meters is used as the research object. Rock samples within a 90-meter height are selected at equal intervals and subjected to repeated freshwater dissolution treatment. The resulting residue is then subjected to hydraulic fracturing under simulated formation pressure to obtain the sediment required for the experiment. The experimental chamber is then filled to 40% capacity according to the residue filtration ratio and layer sequence of each sample. The experimental brine is saturated brine after soaking the rock samples. Gas is introduced into the chamber after partial pressure reduction. Once the chamber pressure stabilizes, the sediment and brine can be discharged by controlling the injected gas flow rate and maintaining a constant chamber pressure. An external imaging device can observe and record the gas-water interface and flow rate count throughout the process.

[0091] The embodiments of the present invention are convenient to be carried out in the laboratory, without site and environmental limitations, and can scientifically simulate the brine discharge situation in a single-cavity underground salt cavern.

[0092] The solution of the present invention has the following beneficial effects:

[0093] (1) This invention proposes a physical experimental simulation method for studying the process of sludge discharge from underground salt cavern gas storage. By designing a discharge cavity with a geometrically similar shape according to the actual size and dimensions of the underground cavity, and by taking a core sample from the well obtained in the field and conducting a freshwater dissolution experiment at a proportional height and then performing hydraulic fracturing, the bottom sludge after dissolution of the actual cavity is obtained. Sludge is placed in the simulated cavity according to the height and sludge ratio of each rock sample layer to simulate the stratum accumulation of sludge inside the salt cavern cavity as much as possible.

[0094] (2) Study on the gas-water phase permeation mechanism and characteristics of the bottom well gas injection and brine discharge process. Combining the geological characteristics after salt rock dissolution and the sedimentation rhythm, the bottom well gas injection and brine discharge process was simulated in the laboratory. Different variable factors were set to obtain water saturation characteristics, and a data model of water production, gas production and gas-water phase permeation characteristics was established.

[0095] (3) Improve the gas channeling prevention and control process measures during the brine discharge process, clarify the influence of brine discharge pressure and brine discharge time on absolute permeability and gas-water phase permeability curve, determine the main controlling factors affecting brine discharge from the sediment layer, and form a reasonable production system suitable for bottom well gas injection and brine discharge.

[0096] Based on the same principles as the methods shown in the embodiments of the present invention, the embodiments of the present invention also provide an electronic device, which may include, but is not limited to: a processor and a memory; the memory for storing computer programs; and the processor for executing the process of determining the stress borne by the sediment in the transparent visualization cavity in any embodiment of the present invention by calling the computer program.

[0097] In one alternative embodiment, an electronic device is provided, such as Figure 5 As shown, Figure 5 The illustrated electronic device 4000 includes a processor 4001 and a memory 4003. The processor 4001 and the memory 4003 are connected, for example, via a bus 4002. Optionally, the electronic device 4000 may further include a transceiver 4004, which can be used for data interaction between the electronic device and other electronic devices, such as sending and / or receiving data. It should be noted that in practical applications, the transceiver 4004 is not limited to one type, and the structure of the electronic device 4000 does not constitute a limitation on the embodiments of the present invention.

[0098] Processor 4001 may be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this invention. Processor 4001 may also be a combination that implements computational functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0099] Bus 4002 may include a pathway for transmitting information between the aforementioned components. Bus 4002 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. Bus 4002 can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 5 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0100] The memory 4003 may be ROM (Read Only Memory) or other types of static storage devices capable of storing static information and instructions, RAM (Random Access Memory) or other types of dynamic storage devices capable of storing information and instructions, or EEPROM (Electrically Erasable Programmable Read Only Memory), CD-ROM (Compact Disc Read Only Memory) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but not limited thereto.

[0101] The memory 4003 stores the application code (computer program) for executing the present invention, and its execution is controlled by the processor 4001. The processor 4001 executes the application code stored in the memory 4003 to implement the content shown in the foregoing method embodiments.

[0102] Among these, electronic devices can also be terminal devices. Figure 5 The electronic device shown is merely an example and should not be construed as limiting the functionality and scope of use of the embodiments of the present invention.

[0103] This invention provides a computer-readable storage medium storing a computer program that, when run on a computer, enables the computer to execute the corresponding content in the aforementioned method embodiments.

[0104] According to another aspect of the present invention, a computer program product or computer program is also provided, comprising computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the methods provided in the various embodiments described above.

[0105] Computer program code for performing the operations of this invention can be written in one or more programming languages ​​or a combination thereof. These programming languages ​​include object-oriented programming languages—such as Java, Smalltalk, and C++—and conventional procedural programming languages—such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0106] It should be understood that the flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of methods and computer program products according to various embodiments of the present invention. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0107] The computer-readable storage medium provided in this invention can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this invention, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0108] The aforementioned computer-readable storage medium carries one or more programs, which, when executed by the electronic device, cause the electronic device to perform the method shown in the above embodiments.

[0109] The above description is merely a preferred embodiment of the present invention and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of disclosure in this invention is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this invention.

Claims

1. A salt cavern single-chamber sediment-debriding halogen-removal simulation device, characterized in that, It includes a gas source, a pressure gauge, a gas flow meter, a transparent and visual cavity, a pressure gauge, a booster pump, a back pressure valve, a liquid flow meter, and a measuring cylinder; The gas source, pressure gauge, and gas flow meter are connected in sequence. The gas flow meter is connected to the transparent visualization cavity. The pressure gauge, back pressure valve, and pressurizing pump are connected to the transparent visualization cavity. The back pressure valve, liquid flow meter, and measuring cylinder are connected in sequence. The transparent visualization cavity is a sealed cavity.

2. The apparatus according to claim 1, characterized in that, The gas source, pressure gauge, gas flow meter, transparent visualization cavity, pressure gauge and pressurization pump are connected by pressure-resistant stainless steel pipelines.

3. The apparatus according to claim 1, characterized in that, The back pressure valve, the liquid flow meter, and the measuring cylinder are connected by a transparent flexible tube.

4. A method for removing brine from a salt cavern single-chamber sludge discharge simulation device as described in claim 1, characterized in that, include: The product to be processed is placed into the transparent visualization cavity, and the product to be processed includes brine and sediment. The salt cavern single-chamber sediment discharge simulation device was used to simulate the real environment inside the salt cavern cavity, and the saturated sediment density and brine density of the sediment under the simulated real environment were obtained. Based on the measured saturated sediment density and the brine density, the stress borne by the sediment in the transparent visualization cavity is determined. The product to be treated is subjected to hydraulic fracturing using the stress, so that the brine is discharged from the transparent and visible cavity into the measuring cylinder, resulting in crushed sediment.

5. The method according to claim 4, characterized in that, The product to be processed is determined in the following way: The original rock sample taken from at least one stratum is repeatedly soaked in fresh water until the soluble components in the original rock sample are completely dissolved, thus obtaining the product to be processed.

6. The method according to claim 5, characterized in that, The method further includes: For each stratum, obtain the volume ratio between the first volume of the original rock sample corresponding to that stratum and the second volume of the sediment corresponding to that original rock sample; For each formation, the corresponding volumetric residue rate is determined based on the corresponding volume ratio.

7. The method according to claim 6, characterized in that, The method further includes: The volume of the first proportion of the volume of the transparent visualization cavity is taken as the volume corresponding to the sediment; Based on the volumetric residue ratio corresponding to each of the aforementioned strata, residue is added to fill the transparent visualization cavity.

8. The method according to claim 7, characterized in that, The step of filling the transparent visualization cavity with residue according to the volumetric residue ratio corresponding to each of the aforementioned strata includes: Based on the volumetric residue rate corresponding to each of the strata, and in accordance with the volumetric residue rate and the stratigraphic sequence of each of the strata, residue is added to fill the transparent visualization cavity.

9. An electronic device, characterized in that, It includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the method of any one of claims 5-8.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the method of any one of claims 5-8.

Images