Straight and flat combined injection and extraction in-situ leaching mining method and device for sandstone type solid ore
Patent Information
- Application Number
- CN202411048509.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-01
- Publication Date
- 2026-02-03
Smart Images
Figure CN121451918A_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of oil and gas field development technology, and in particular relates to a method and apparatus for mining sandstone-type solid minerals by a combination of injection, extraction and in-situ leaching. Background Technology
[0002] The Liaohe mining area is rich in associated mineral resources, including uranium and alkali deposits, with promising development prospects. Since 1997, Liaohe Oilfield has conducted continuous exploration for uranium and alkali deposits, developing unique technologies for both oil and uranium exploration. This has led to the discovery of one super-large uranium deposit and one large alkali deposit, establishing Liaohe as the second largest natural uranium production base in China and a national strategic mineral base. Overall, the results have reached international leading levels. In-situ leaching mining involves injecting leaching solutions into the ore layer through injection holes. Taking uranium as an example, an oxidizing agent-containing leaching solution is injected to oxidize the uranium in the ore layer to hexavalent oxidation, dissolving it in water. The solution is then extracted to the surface through extraction holes, where subsequent related processes are carried out to produce intermediate products. Due to the unique mineralization patterns of sandstone uranium deposits, the grade is generally lower in areas with better physical properties in the main channel of the river microfacies, while the grade is relatively higher in areas with moderate physical properties located on the riverbanks and near the interchannel mud due to proximity to external reducing media.
[0003] In traditional vertical shaft injection-extraction leaching mining, the leaching solution, after entering the target ore body from the injection well, suffers from poor lateral flow due to gravity and the influence of the underlying high-permeability reservoir, resulting in low mining efficiency between wells. Changing the flow direction of the leaching solution after entering the ore body to improve the mining efficiency between wells in traditional vertical shaft development is a crucial issue in leaching mining. Summary of the Invention
[0004] The embodiments of this application provide a method and apparatus for mining sandstone solid minerals by a combination of vertical and horizontal injection-extraction leaching. This method changes the traditional vertical well injection-extraction design and overcomes problems such as poor ore body properties and uneven lateral seepage by combining methods such as rotation and adjustment of injection-extraction wells.
[0005] Other features and advantages of this application will become apparent from the following detailed description, or may be learned in part from practice of this application.
[0006] According to a first aspect of the embodiments of this application, such as Figure 1 As shown, a method for mining sandstone-type solid minerals using a combination of injection, extraction, and in-situ leaching is provided, comprising:
[0007] The distribution pattern of interlayers was analyzed to determine the distribution characteristics of the ore bodies. Interlayers are non-permeable layers that separate different ore-bearing sand bodies. The non-permeable layers include mudstone, silty mudstone and gypsum rock layers.
[0008] Based on the ore body distribution characteristics and the interlayer distribution pattern, a mining well network of straight and horizontal combined injection-extraction-in-ground leaching is designed for mining.
[0009] Based on the form of a straight-horizontal combined injection-extraction leaching mining well network, the injection-extraction well classification system should be reasonably adjusted, and the injection-extraction leaching mining scheme should be optimized.
[0010] According to a second aspect of the embodiments of this application, such as Figure 2 As shown, a sandstone-type solid ore vertical-horizontal combined injection-extraction-in-situ leaching mining apparatus is provided, comprising:
[0011] Analysis and determination module: used to analyze the distribution pattern of interlayers and determine the distribution characteristics of ore bodies. Interlayers are non-permeable layers that separate different ore-bearing sand bodies. Non-permeable layers include mudstone, silty mudstone and gypsum rock layers.
[0012] Design module: Used to design the form of a straight-horizontal combined injection-extraction leaching mining well network for mining based on the distribution characteristics of the ore body and the distribution pattern of interlayers;
[0013] Optimization module: Used to reasonably adjust the injection-extraction well system and optimize the injection-extraction-in-situ leaching mining scheme based on the form of a straight-horizontal combined injection-extraction-in-situ leaching mining well network.
[0014] According to a third aspect of the embodiments of this application, a sandstone-type solid ore vertical-horizontal combined injection-extraction-in-situ leaching mining device is provided, including a processor and a memory. The memory stores computer program instructions that can be executed by the processor. When the processor executes the computer program instructions, it implements the steps of the method described in any of the first aspects above.
[0015] According to a fourth aspect of the embodiments of this application, a computer-readable storage medium is provided, wherein computer program instructions are stored therein, and when executed by a processor, the computer program instructions cause the processor to perform the steps of the method as described in any of the first aspects above.
[0016] This invention modifies the traditional vertical well injection-extraction well design and, through research on the distribution patterns of high-grade ore bodies and reservoir interlayers, innovates a vertical-horizontal combined injection-extraction leaching mining well network design. This alters the seepage direction of the leaching solution within the ore body and, simultaneously, rationally designs a rotation and injection-extraction well adjustment system, optimizing the injection-extraction leaching mining scheme. This achieves the goal of reducing the number of injection-extraction wells and increasing the mining rate. Furthermore, this invention is applicable to the field of solid mineral development and has good practicality.
[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description
[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings:
[0019] Figure 1 A schematic flowchart of a method for predicting formation pore pressure is shown in one embodiment.
[0020] Figure 2 A schematic diagram of a formation pore pressure prediction device is shown in one embodiment.
[0021] Figure 3 A schematic diagram of a formation pore pressure prediction device is shown in one embodiment. Figure 4 A schematic diagram of the injection and extraction well locations in the study area is shown in one embodiment of a method for predicting formation pore pressure. Detailed Implementation
[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0023] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.
[0024] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.
[0025] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.
[0026] In this invention, a method for mining sandstone solid minerals using a combination of injection, extraction, and in-situ leaching is provided, forming two applicable development conditions: First, in the later stages of traditional vertical well development, horizontal wells are deployed between wells to form an innovative vertical-horizontal combined injection and extraction development well network, which can significantly improve the recovery rate. Second, in the early stages of development, optimized vertical-horizontal combined deployment is carried out, which differs from the inter-well densification of horizontal wells, mainly exploring the win-win situation of saving the number of injection and extraction wells and improving the mining efficiency of the ore body. The specific contents of the invention are as follows: (1) Study on the distribution law of interlayers to realize the distribution characteristics of high-grade ore bodies; (2) Design of vertical-horizontal injection, extraction, and in-situ leaching mining well network based on sand body morphology and interlayer distribution; (3) Reasonable design of injection and extraction well adjustment system to optimize the injection, extraction, and in-situ leaching mining scheme.
[0027] Specifically, Figure 1 A schematic flowchart of a sandstone-type solid ore vertical-horizontal combined injection-extraction in-situ leaching mining method is shown in one embodiment. For example... Figure 1 As shown, a method for mining sandstone-type solid minerals by a combination of injection, extraction, and in-situ leaching is provided, which may include the following steps 100 to 300.
[0028] S100. Analyze the distribution pattern of interlayers and determine the distribution characteristics of ore bodies. Interlayers are non-permeable layers that separate different ore-bearing sand bodies. Non-permeable layers include mudstone, silty mudstone and gypsum rock layers.
[0029] It is understood that in this step, S100 includes S101, S102, S103, and S104, wherein:
[0030] S101. Obtain core calibration logging and core positioning. After establishing interlayer logging identification standards and unifying the core description results with logging data, a quantitative description of the target layer of a single well is obtained.
[0031] It should be noted that step S101 includes S1011, S1012, and S1013, wherein:
[0032] S1011. Establish identification standards for interlayers using core calibration logging technology;
[0033] S1012. Using core repositioning technology, the core description results and logging data from the cored wells are unified to the same depth, and the electrical characteristics of different types of interlayers are clarified based on core lithology analysis.
[0034] S1013. Through continuous logging curves, mudstone, silty mudstone and gypsum rock layers are identified in the uncorked section, and a quantitative description of the target layer of the single well with interlayer is completed.
[0035] It should be noted that interlayers refer to non-permeable layers separating different ore-bearing sand bodies, such as mudstone, silty mudstone, and gypsum layers. These layers have good lateral continuity and can prevent vertical seepage between sand bodies. Taking uranium deposits as an example, interlayers play two roles in the uranium mineralization and enrichment process: First, they supplement the insufficient reducing medium within the sand body, acting as an external reducing agent to facilitate preferential precipitation and unloading of uranium. Second, they are an important component of a favorable mud-sand-mud reservoir structure. Interlayer oxidation mainly develops along the bedding planes during fluid infiltration under the influence of the surrounding rock's "mud-sand-mud" reservoir structure. The influence of interlayers facilitates the smooth migration of uranium-bearing and oxygen-rich interlayer water, providing sufficient material conditions for the formation of uranium ore bodies.
[0036] Understandably, in this embodiment, core calibration logging establishes a standard for identifying interlayers. Core repositioning unifies the core description results with the logging data to a single depth. Based on the lithology of the cored section, the electrical characteristics of different types of interlayers are analyzed and clarified. Then, through continuous logging curves, mudstone, silty mudstone, and gypsum layers are identified in sections without cores, completing a quantitative description of the target layer in a single well containing interlayers.
[0037] S102. Based on quantitative description and combined with historical seismic data, a cross-sectional map of the ore body interlayer is obtained, and the distribution characteristics of the ore body enrichment between wells are predicted.
[0038] It should be noted that step S102 includes S1021, S1022, S1023, and S1024, wherein:
[0039] S1021. Based on seismic data, draw inter-well seismic profiles and analyze seismic waveform changes;
[0040] S1022. Draw a cross-sectional diagram of the interlayer of the ore body based on the changes in the seismic waveform;
[0041] S1023. Based on the cross-sectional map of the ore body interlayer and the analysis of the ore body enrichment process, predict the distribution characteristics of the ore body between wells.
[0042] S1024. Combine the predicted distribution characteristics of the inter-mine ore bodies with historical mine test data to predict the grade of the inter-mine ore bodies.
[0043] It is understandable that in the steps of this embodiment, combined with seismic data, the seismic waveform changes between wells are analyzed by drawing seismic profiles between wells. Based on this, the ore body interlayer profile is drawn. According to the understanding of the enrichment effect of interlayers on the ore body, the distribution characteristics of the ore body between wells are predicted. At the same time, the grade of the ore body between wells is predicted mainly based on the grade data of surface testing.
[0044] S103. Based on the distribution characteristics and grade prediction of the ore bodies between wells, and after data fusion and analysis, the planar distribution map of the interlayers of ore bodies in different layers is obtained.
[0045] S104. Based on the planar distribution map of the interlayers, and after processing in conjunction with regional sedimentary facies studies, the influence analysis law of ore body enrichment pattern is obtained.
[0046] It should be noted that in this step, the "soft data" of understanding the interlayers between wells is combined with the "hard data" of interlayers in a single well to draw a planar distribution map of interlayers that have a significant effect on the enrichment of ore bodies in different layers. For example... Figure 4 As shown, since the interlayers in a single well are determined by analysis of the core and its foundation, the data is highly accurate and used as "hard data" for mapping; while the distribution of interlayers between wells is limited by the accuracy of seismic data and is relatively less accurate, and is used as "soft data" in mapping.
[0047] Understandably, based on the cross-sectional and planar distribution patterns of interlayers, combined with regional sedimentary facies studies, the influence of these interlayers on the enrichment patterns of ore bodies is analyzed to determine the distribution of high-grade ore bodies. Comprehensive analysis reveals that while the interlayers are well-developed in the river channel and the ore body reservoir has poorer physical properties compared to the main channel, the interlayers act as external reducing agents, favoring the preferential precipitation and unloading of uranium and other minerals. Therefore, the ore body grade in this area is relatively high.
[0048] S200. Based on the distribution characteristics of the ore body and the distribution pattern of interlayers, a straight-horizontal combined injection-extraction-in-ground leaching mining well network is designed for mining.
[0049] It should be noted that in-situ leaching mining involves injecting leaching solution into the ore layer through injection holes. The leaching solution reacts with valuable elements in the ore body, dissolving them in water. The liquid carrying these valuable elements is then extracted through extraction holes for further specialized separation processes. Therefore, the contact area between the leaching solution and the ore body, especially the large-scale contact and reaction between the leaching solution and high-grade ore bodies, is crucial for improving the effectiveness of in-situ leaching mining. Based on the above conclusions, under traditional development methods, high-grade ore bodies have poor reservoir properties, and the injected leaching solution preferentially seeps into the high-permeability areas of the main river channel, resulting in relatively poor utilization in areas with relatively high-grade ore bodies developed in interlayers. Therefore, this invention focuses on solving these problems and innovatively proposes a straight-horizontal combined injection-extraction in-situ leaching mining well network design, specifically divided into the following two types:
[0050] It is understood that step S200 includes S201 and S202, wherein:
[0051] S201. Deploy and consider the geological conditions of the horizontal well, and carry out fracturing operations accordingly;
[0052] S202. For blocks where exploration has been completed and resource quantities have been reported and filed, develop well location deployment strategies, and take into account differences in well types at the junctions to optimize drilling conditions.
[0053] It should be noted that step S202 also includes S2021 and S2022, wherein:
[0054] S2021. In the main river channel area, the traditional vertical well network deployment method is adopted;
[0055] S2022. In areas between rivers, a development model combining straight and horizontal approaches will be adopted.
[0056] In this step, specifically, for blocks already undergoing conventional vertical shaft mining, the production of high-grade ore bodies between shafts is increased through the densification of horizontal wells. Horizontal wells are deployed between the existing well network to connect two main river channels, thereby expanding the spatial reach of leaching. Since the horizontal wells are located between river channels with well-developed interlayers, the drilling will avoid the original main development layer, taking into account the single-well identification results from the previous steps. If conditions permit, fracturing will be performed to penetrate the upper and lower interlayers, maximizing the penetration of leaching fluid into the high-grade main ore body and thin peripheral ore bodies. This method can significantly improve the extraction rate of ore bodies between shafts, especially in areas with low physical properties, using traditional mining methods.
[0057] Specifically, secondly, for blocks where ore body exploration has been conducted and resource volume reporting has been completed but development well locations have not yet been systematically deployed, a combination of straight and horizontal well deployment will be implemented, taking into account the actual characteristics of sand body morphology and interlayer distribution. That is, a traditional straight well network will be used in the main channel, while a combined straight and horizontal development model will be adopted for areas between channels. Due to the differences in well types at the junctions between channels and river sections, the combination of straight and horizontal wells will be considered to improve utilization while minimizing drilling. Specifically, under the condition of a single well network distance between well groups, such as between well groups 2-2 and 6-4, a two-horizontal-one-straight well network pattern will be formed; under the condition of a 1.5-times well network distance between well groups, such as between well groups 1-3 and 7-6, a two-horizontal-two-straight well network pattern will be formed.
[0058] S300, based on the form of a straight-horizontal combined injection-extraction leaching mining well network, rationally adjust the injection-extraction well classification system and optimize the injection-extraction leaching mining scheme.
[0059] In this step, the form of the vertical-horizontal combined injection-extraction leaching mining well network includes three cases: adjustment of conventional vertical well mining well types, adjustment of old well network densification vertical-horizontal combined well network well types, and adjustment of newly deployed vertical-horizontal combined well network well types.
[0060] It is understandable that, in addition to well pattern design, rationally adjusting the type of injection and extraction wells is also an effective way to increase the contact area between the leaching solution and the ore body in in-situ leaching mining. This is mainly based on the well pattern design mentioned above, and can be divided into the following three situations:
[0061] It is understood that step S300 includes S301, S302, and S303, wherein:
[0062] S301, the well classification of conventional vertical shaft mining is adjusted so that in the early stage of development, specific wells are designated as pumping wells and peripheral wells are designated as injection wells. In the middle and later stages, the well classification is adjusted, with intermediate wells being converted to pumping and peripheral wells to injection, in order to optimize the direction of fluid flow.
[0063] S302. The well types of the old well network densification straight-horizontal combination well network are adjusted so that the horizontal wells are used as injection wells, consistent with the well types of the vertical wells. The vertical wells between the horizontal wells are converted into pumping wells. The adjustment is made to ensure uniform utilization.
[0064] S303. The well types of the newly deployed vertical-horizontal combined well network are adjusted so that the well types of horizontal wells are consistent with the corresponding vertical wells.
[0065] In some embodiments, during implementation, the following steps are taken: First, for conventional vertical shaft mining, the shaft classification is adjusted. Taking vertical shaft group 2-2 as an example, in the early stages of development, 2-2 is used as a pumping well, and the six peripheral wells 1-1, 1-2, 2-1, 2-3, 3-2, and 3-3 are used as injection wells. In the later stages of development, to improve the utilization of ore bodies between shafts, the shaft classification is adjusted, with injection in the middle and pumping at the edges, changing the direction of the leaching solution flow and improving the utilization of high-grade ore bodies. Second, for the classification adjustment of existing vertical-horizontal combined shaft networks: corresponding to the vertical shaft network adjustment results, horizontal wells are used as injection wells, that is, the classification of horizontal wells is consistent with the corresponding vertical wells, such as H1 being consistent with 2-2 and 6-4; vertical wells between horizontal wells are changed from injection wells to pumping wells, such as 3-3, 4-4, and 5-4, and the distance between vertical wells and horizontal wells is uneven. Third, for the design of newly deployed vertical-horizontal combined shaft networks: horizontal wells also adopt the principle of consistency with their corresponding vertical wells.
[0066] It should be noted that the mining method, which designs a straight-horizontal combined injection-extraction-leaching mining well network based on the ore body distribution characteristics and interlayer distribution patterns, includes:
[0067] Collect geometric morphological data of sand bodies and spatial distribution data of interlayers;
[0068] Using the collected data, a three-dimensional geological model of the sand body and interlayers was established;
[0069] Computational fluid dynamics technology is applied to simulate the flow of leachate underground and predict the fluid distribution and flow path under different well pattern configurations;
[0070] Multiple well network configuration schemes were generated using optimization algorithms, and these schemes were compared and analyzed. The optimal well network configuration scheme was then selected for use in actual in-situ leaching mining projects.
[0071] In this embodiment, an example is given: First, geometric morphology data of the sand body and spatial distribution data of the interlayers are collected. This data may come from geological exploration, well sampling, geophysical exploration, etc. Then, using the collected data, a three-dimensional geological model of the sand body and interlayers is established. This model can accurately reflect the complexity and variability of the underground structure. Next, computational fluid dynamics (CFD) technology is applied to simulate the flow of leaching fluid underground. Through simulation, the fluid distribution and flow path under different well network configurations can be predicted. An optimization algorithm is designed to determine the optimal well network configuration, which considers factors such as fluid dynamics simulation results, geological model, mining efficiency, and cost-effectiveness. Multiple well network configuration schemes are generated using the optimization algorithm, and these schemes are compared and analyzed to evaluate their performance in terms of mining efficiency, resource recovery rate, and cost-effectiveness. The optimal well network configuration scheme is then selected and further validated in the geological model. The validation process may include sensitivity analysis, risk assessment, and economic evaluation. The selected well network configuration scheme is applied to actual in-situ leaching mining projects. During implementation, the well network configuration is adjusted as necessary based on real-time monitoring data and mining results.
[0072] The well network configuration determined through the above process can maximize the contact area between the leaching solution and the ore body, improve mining efficiency, reduce mining costs, and extend the service life of the ore body.
[0073] Specifically, the method in this invention guides the compilation of a study on the potential and utilization of associated oil and gas resources in the Liaohe River exploration area. Between 2020 and 2022, the uranium recovery rate in this area remained between 40% and 60%. During this period, the recovery rate was slightly improved by adjusting the solvent injection rate and optimizing development parameters. Applying this invention effectively solves this problem, achieving a recovery rate exceeding 60%, thus improving uranium mining efficiency. Simultaneously, this method reduces the number of development wells, significantly lowering mining costs. The design of a direct-flow combined injection-pump in-situ leaching mining method has yielded good results.
[0074] In summary, this invention improves the accuracy and efficiency of ore body exploration. Through in-depth research on interlayers, it can more accurately predict and determine the location of high-grade ore bodies, thereby optimizing resource development strategies and reducing ineffective or inefficient exploration activities. By identifying the distribution characteristics of high-grade ore bodies, these areas can be prioritized for mining, increasing the quality and economic value of mineral products. Precise well network design maximizes the contact area between the leaching solution and the ore body, thereby improving the dissolution and mining efficiency. This design considers the complexity of geological conditions and, by adapting to sand body morphology and interlayer distribution, reduces uncertainties and risks during mining, extends the service life of the mine, and lowers mining costs. Flexible adjustment of injection and extraction wells allows for real-time optimization of mining plans based on the actual mining conditions of the ore body and the flow characteristics of the leaching solution, improving resource recovery rates. This system allows for dynamic management of the mining process; by adjusting the configuration of injection and extraction wells, the flow direction of the leaching solution can be better controlled, reducing resource waste and improving the safety and environmental friendliness of mining.
[0075] The following describes an embodiment of the apparatus described in this application, which can be used to execute the sandstone-type solid ore vertical-horizontal combined injection-extraction-in-situ leaching mining method described in the above embodiments of this application. For details not disclosed in the apparatus embodiments of this application, please refer to the embodiments of the sandstone-type solid ore vertical-horizontal combined injection-extraction-in-situ leaching mining method described in the above embodiments of this application.
[0076] This embodiment provides a sandstone-type solid ore vertical-horizontal combined injection-extraction-in-situ leaching mining device, such as... Figure 2 As shown, the device includes:
[0077] Analysis and determination module: used to analyze the distribution pattern of interlayers and determine the distribution characteristics of ore bodies. Interlayers are non-permeable layers that separate different ore-bearing sand bodies. Non-permeable layers include mudstone, silty mudstone and gypsum rock layers.
[0078] Design module: Used to design the form of a straight-horizontal combined injection-extraction leaching mining well network for mining based on the distribution characteristics of the ore body and the distribution pattern of interlayers;
[0079] Optimization module: Used to reasonably adjust the injection-extraction well system and optimize the injection-extraction-in-situ leaching mining scheme based on the form of a straight-horizontal combined injection-extraction-in-situ leaching mining well network.
[0080] It should be noted that the specific manner in which each module performs its operation in the apparatus described in the above embodiments has been described in detail in the embodiments of the method, and will not be elaborated here.
[0081] Corresponding to the above method embodiments, this embodiment also provides a sandstone-type solid ore vertical-horizontal combined injection-extraction-in-situ leaching mining equipment. The sandstone-type solid ore vertical-horizontal combined injection-extraction-in-situ leaching mining equipment described below and the sandstone-type solid ore vertical-horizontal combined injection-extraction-in-situ leaching mining method described above can be referred to in correspondence with each other.
[0082] Figure 3 This is a block diagram illustrating a sandstone-type solid ore vertical-horizontal combined injection-extraction-in-situ leaching mining apparatus 800 according to an exemplary embodiment. Figure 3 As shown, the sandstone-type solid ore vertical-horizontal combined injection-extraction-in-situ leaching mining equipment 800 includes a processor 801 and a memory 802. The sandstone-type solid ore vertical-horizontal combined injection-extraction-in-situ leaching mining equipment 800 also includes one or more of a multimedia component 803, an I / O interface 804, and a communication component 805.
[0083] The processor 801 controls the overall operation of the sandstone-type solid ore vertical-level combined injection-extraction-in-situ leaching mining equipment 800 to complete all or part of the steps in the aforementioned sandstone-type solid ore vertical-level combined injection-extraction-in-situ leaching mining method. The memory 802 stores various types of data to support the operation of the sandstone-type solid ore vertical-level combined injection-extraction-in-situ leaching mining equipment 800. This data may include, for example, instructions for any application or method operating on the sandstone-type solid ore vertical-level combined injection-extraction-in-situ leaching mining equipment 800, as well as application-related data such as contact data, sent and received messages, images, audio, video, etc. The memory 802 can be implemented using any type of volatile or non-volatile storage device or a combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The multimedia component 803 may include a screen and an audio component. The screen may be, for example, a touchscreen, and the audio component is used to output and / or input audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signals may be further stored in the memory 802 or transmitted via the communication component 805. The audio component also includes at least one speaker for outputting audio signals. I / O interface 804 provides an interface between processor 801 and other interface modules, such as keyboards, mice, or buttons. These buttons can be virtual or physical. Communication component 805 is used for wired or wireless communication between the sandstone-type solid ore vertical-horizontal combined injection-extraction-leaching mining equipment 800 and other devices. Wireless communication includes, for example, Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G, or 4G, or a combination thereof. Therefore, the corresponding communication component 805 may include a Wi-Fi module, a Bluetooth module, or an NFC module.
[0084] In an exemplary embodiment, the sandstone-type solid ore direct-level combined injection-extraction-in-situ leaching mining equipment 800 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the above-described sandstone-type solid ore direct-level combined injection-extraction-in-situ leaching mining method.
[0085] In another exemplary embodiment, a computer-readable storage medium including program instructions is also provided, which, when executed by a processor, implement the steps of the above-described sandstone-type solid ore direct-line combined injection-extraction-in-situ leaching mining method. For example, the computer-readable storage medium may be the memory 802 including the program instructions, which may be executed by the processor 801 of the sandstone-type solid ore direct-line combined injection-extraction-in-situ leaching mining equipment 800 to complete the above-described sandstone-type solid ore direct-line combined injection-extraction-in-situ leaching mining method.
[0086] Corresponding to the above method embodiments, this embodiment also provides a readable storage medium. The readable storage medium described below can be referred to in conjunction with the sandstone-type solid ore vertical-horizontal combined injection-extraction-in-ground leaching mining method described above.
[0087] A computer program is stored on a readable storage medium, and when the computer program is executed by a processor, it implements the steps of the sandstone-type solid ore straight-line combined injection-extraction-in-ground leaching mining method of the above method embodiments.
[0088] In summary, this invention provides a method for mining sandstone solid minerals using a combination of vertical and horizontal injection-extraction leaching, creating two applicable development conditions: First, in the later stages of traditional vertical well development, horizontal wells are deployed between the wells, forming an innovative vertical-horizontal combined injection-extraction well network, which can significantly improve the recovery rate. Second, in the early stages of development, optimized vertical-horizontal combined deployment is carried out, which differs from the inter-well densification of horizontal wells, mainly exploring a win-win situation of saving the number of injection and extraction wells and improving the mining efficiency of the ore body.
[0089] Specifically, the readable storage medium can be a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, or any other readable storage medium capable of storing program code.
[0090] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.
Claims
1. A method for mining sandstone-type solid minerals using a combination of injection, extraction, and leaching, characterized in that... include: The distribution pattern of interlayers was analyzed to determine the distribution characteristics of the ore bodies. Interlayers are non-permeable layers that separate different ore-bearing sand bodies. The non-permeable layers include mudstone, silty mudstone and gypsum rock layers. Based on the ore body distribution characteristics and the interlayer distribution pattern, a mining well network of straight and horizontal combined injection-extraction-in-ground leaching is designed for mining. Based on the form of a straight-horizontal combined injection-extraction leaching mining well network, the injection-extraction well classification system should be reasonably adjusted, and the injection-extraction leaching mining scheme should be optimized.
2. The method for mining sandstone-type solid ore using a combination of injection, extraction, and leaching according to claim 1, characterized in that, The analysis of the distribution pattern of the interlayer includes: Obtain core calibration logging and core positioning, and after establishing interlayer logging identification standards and unifying the core description results with logging data, obtain a quantitative description of the target layer of a single well; Based on quantitative description and combined with historical seismic data, a cross-sectional map of the ore body interlayer was obtained, and the distribution characteristics of the ore body enrichment between wells were predicted. Based on the distribution characteristics and grade prediction of the ore bodies between wells, and after data fusion and analysis, a planar distribution map of the interlayers of ore bodies in different layers was obtained. Based on the planar distribution map of the interlayers, and after processing in conjunction with regional sedimentary facies studies, the influence analysis law of ore body enrichment pattern is obtained.
3. The method for mining sandstone-type solid ore using a combination of injection, extraction, and leaching according to claim 2, characterized in that, The acquisition of core calibration logging and core repositioning, after establishing interlayer logging identification standards and unifying the processing of core description results with logging data, yields a quantitative description of the target layer in a single well, including: Establish identification standards for interlayers using core calibration logging technology; Using core repositioning technology, the core description results and logging data from the cored wells are unified to the same depth, and the electrical characteristics of different types of interlayers are clarified based on core lithology analysis. By using continuous logging curves, mudstone, silty mudstone and gypsum rock layers were identified in the uncored sections, and a quantitative description of the target layer in a single well with interlayers was completed.
4. The method for mining sandstone-type solid ore using a combination of injection, extraction, and leaching according to claim 2, characterized in that, Based on quantitative description and combined with historical seismic data, the ore body interlayer profile is obtained, and the distribution characteristics of inter-well ore body enrichment are predicted, including: Based on seismic data, draw inter-well seismic profiles and analyze seismic waveform changes; Based on the changes in the seismic waveform, draw the cross-sectional diagram of the interlayer of the ore body; Based on the cross-sectional map of the ore body interlayer and the analysis of the ore body enrichment process, the distribution characteristics of the ore body between wells are predicted. By combining the predicted distribution characteristics of inter-mine ore bodies with historical mine test data, the grade of inter-mine ore bodies can be predicted.
5. The method for mining sandstone-type solid ore using a combination of injection, extraction, and leaching according to claim 1, characterized in that, Based on the ore body distribution characteristics and the interlayer distribution pattern, a mining network of straight-horizontal combined injection-extraction-leaching wells is designed for mining, including: The geological conditions of the horizontal well are assessed and considered, and fracturing operations are carried out accordingly. For blocks where exploration has been completed and reported for record-keeping, development well placement strategies will be developed, and well type differences at connection points will be considered to optimize drilling conditions.
6. The method for mining sandstone-type solid ore using a combination of injection, extraction, and leaching according to claim 5, characterized in that, The well site deployment strategy includes: Within the main river channel area, the traditional vertical well network deployment method is adopted; In the areas between the river channels, a development model combining straight and horizontal approaches is adopted.
7. The method for mining sandstone-type solid ore using a combination of injection, extraction, and leaching according to claim 1, characterized in that, The form of the mining well network based on the combination of vertical and horizontal injection-extraction-in-situ leaching includes three cases: adjustment of conventional vertical well mining well types, adjustment of well types in the old well network densification vertical and horizontal combination well network, and adjustment of well types in the newly deployed vertical and horizontal combination well network.
8. The method for mining sandstone-type solid ore using a combination of injection, extraction, and leaching according to claim 7, characterized in that, The adjustments to the types of conventional vertical shaft mining wells, the adjustments to the types of existing vertical-horizontal combined well networks, and the adjustments to the types of newly deployed vertical-horizontal combined well networks include: In conventional vertical shaft mining, the well classification is adjusted so that in the early stage of development, specific wells are designated as pumping wells and peripheral wells are designated as injection wells. In the middle and later stages, the well classification is adjusted, with intermediate wells being converted to pumping wells and peripheral wells being converted to injection wells, in order to optimize the direction of fluid flow. The old well network was densified and the vertical-horizontal combined well network was adjusted so that the horizontal wells were used as injection wells, consistent with the vertical wells. The vertical wells between the horizontal wells were converted into pumping wells. The adjustment was made to ensure uniform utilization. The newly deployed vertical-horizontal combined well network has been adjusted so that the well types of horizontal wells are consistent with the corresponding vertical wells.
9. The method for mining sandstone-type solid ore using a combination of injection, extraction, and leaching according to claim 1, characterized in that, Based on the ore body distribution characteristics and the interlayer distribution pattern, a mining network of straight-horizontal combined injection-extraction-leaching wells is designed for mining, including: Collect geometric morphological data of sand bodies and spatial distribution data of interlayers; Using the collected data, a three-dimensional geological model of the sand body and interlayers was established; Computational fluid dynamics technology is applied to simulate the flow of leachate underground and predict the fluid distribution and flow path under different well pattern configurations; Multiple well network configuration schemes were generated using optimization algorithms, and these schemes were compared and analyzed. The optimal well network configuration scheme was then selected for use in actual in-situ leaching mining projects.
10. A sandstone-type solid ore vertical-horizontal combined injection-extraction-in-situ leaching mining device, characterized in that, include: Analysis and determination module: used to analyze the distribution pattern of interlayers and determine the distribution characteristics of ore bodies. Interlayers are non-permeable layers that separate different ore-bearing sand bodies. Non-permeable layers include mudstone, silty mudstone and gypsum rock layers. Design module: Used to design the form of a straight-horizontal combined injection-extraction leaching mining well network for mining based on the distribution characteristics of the ore body and the distribution pattern of interlayers; Optimization module: Used to reasonably adjust the injection-extraction well system and optimize the injection-extraction-in-situ leaching mining scheme based on the form of a straight-horizontal combined injection-extraction-in-situ leaching mining well network.