Well location deployment method for sandstone-type uranium deposit exploration based on 3D seismic comprehensive interpretation

Abstract

The present invention relates to a method for deploying exploration wells for sandstone-type uranium mines based on three-dimensional seismic comprehensive interpretation, including reading in the three-dimensional seismic comprehensive interpretation results for the target strata of the sandstone-type uranium mine; determining the preliminary well locations based on various single ore-controlling elements based on the interpretation of the target strata, fault interpretation, sedimentary characteristic analysis, lithology inversion and mineralization inversion results; cross-evaluating the various ore-controlling elements for the preliminary well locations; and selecting the final exploration well locations based on the comprehensive index after the cross-evaluation. The method adopts the three-dimensional seismic comprehensive interpretation results of the ore-controlling elements in five aspects for a detailed description, and through high-resolution three-dimensional transparency and visualization of each ore-controlling element of the sandstone-type uranium reservoir, and adopts a progressive process management combined with cross-evaluation, mutual corroboration and comprehensive rating of multiple ore-controlling elements to deploy exploration well locations, which can reduce exploration risks, improve exploration efficiency and increase the ore-seeking rate of exploration wells in the exploration of sandstone-type uranium mines.

Description

Technical Field

[0001] The present invention belongs to the technical field of sandstone uranium mine exploration, and specifically relates to a method for sandstone uranium mine exploration well location deployment based on progressive process management of three-dimensional seismic in the geophysical field combined with cross-evaluation, mutual evidence and comprehensive rating among multiple ore-controlling elements, and especially relates to a new method for sandstone uranium mine exploration well location deployment based on three-dimensional seismic comprehensive interpretation. Background Art

[0002] Usually, oil and gas basins are covered with a large amount of high-cost and high-resolution 3D seismic data collected for oil and gas exploration and development. Using these 3D seismic data to guide the exploration of sandstone-type uranium deposits will undoubtedly open up a new research idea of ​​"using historical 3D seismic data in oil and gas areas to find uranium resources at low cost and high efficiency". In the field of oil and gas exploration and development, a large number of successful cases and experiences have shown that it is completely feasible to use 3D seismic data to carry out detailed description and precise exploration of sandstone-type uranium deposits, which are also sedimentary minerals, and it has great exploration potential and market prospects.

[0003] At present, the analysis and research on seismic exploration technology for sandstone-type uranium deposits mainly focuses on five aspects: reservoir strata, faults, sedimentation, lithology and mineralization of sandstone-type uranium deposits. Zhang Guifang published a study on a seismic interpretation method for in-situ leachable sandstone-type uranium deposits on the western slope of the northern Songliao Basin, which records in detail the structural analysis, lithology analysis, sedimentary phase analysis, mineralization conditions and favorable area prediction of the strata and faults of sandstone-type uranium deposits based on three-dimensional seismic. Li Ziwei published a study on the application of a seismic exploration method in the exploration of sandstone-type uranium deposits on the southern edge of the Yili Basin, which records the structural analysis and lithology inversion of the strata and faults of sandstone-type uranium deposits based on seismic; Ni Shiqi and Song Jiye published a brief discussion on the seismic interpretation method for in-situ leachable sandstone-type uranium deposits on the western slope of the northern Songliao Basin, which records in detail the structural analysis, lithology analysis, sedimentary phase analysis, mineralization conditions and favorable area prediction of the strata and faults of sandstone-type uranium deposits based on three-dimensional seismic. The application of seismic phase analysis in the study of sedimentary characteristics of sandstone-type uranium deposits, briefly giving the sedimentary characteristics analysis method of sandstone-type uranium deposits based on seismic phase analysis; Luo Lin disclosed an application of geostatistical inversion in the exploration of sandstone-type uranium deposits in the Qianjiadian area, and recorded the content of ore-bearing inversion of sandstone-type uranium deposits based on three-dimensional seismic; Wu Qubo disclosed a study on comprehensive seismic prediction technology for sandstone-type uranium deposits, taking the Qihargetu Sag uranium deposit as an example, studying the comprehensive prediction technology of seismic exploration for sandstone-type uranium deposits, focusing on structure, sand and Wu Qubo et al. published a seismic exploration technology for sandstone-type uranium deposits in the Wucaiwan area of ​​the Junggar Basin, and studied three aspects: strata and faults, lithology inversion, and favorable area prediction of sandstone-type uranium deposits. Zheng Xiaojie et al. published an application of seismic-logging joint inversion in sandstone-type uranium deposit exploration, which also focused on the inversion of ore-bearing properties of sandstone-type uranium deposits. Liang Jiangang et al. published an application of two-dimensional seismic exploration in the exploration of sandstone-type uranium deposits in the southern end of Changyuan, Daqing. This paper is based on seismic data research. The article discusses the structural and sedimentary characteristics of sandstone-type uranium deposits; Wei Bin disclosed an application of seismic exploration in the exploration of sandstone-type uranium deposits in Anle Depression of Songliao Basin, and studied the stratigraphic position, faults, sand bodies, sedimentation and uranium mineralization prediction of sandstone-type uranium deposits based on seismic data; Cheng Jixing disclosed an analysis of the application prospects of seismic exploration technology in the exploration and development of in-situ leaching sandstone-type uranium deposits, which studied in detail the stratigraphic position, faults, sand body identification and sedimentary phase analysis of sandstone-type uranium deposits based on seismic data as well as their application prospects in the exploration and development stages.

[0004] Based on seismic data, one or more aspects of the five aspects of sandstone-type uranium deposits, namely, stratigraphy, faults, sedimentation, lithology and mineralization, have been studied, and the prediction and prospecting exploration of sandstone-type uranium deposits have been studied. It has very important theoretical significance and practical value for understanding the basic characteristics of various ore-controlling elements of sandstone-type uranium deposits and guiding the exploration and development of sandstone-type uranium deposits. However, none of the above existing technologies provide the most important well location deployment method for sandstone-type uranium deposit exploration. Summary of the invention

[0005] The purpose of the present invention is to provide a method for deploying sandstone-type uranium mine exploration wells based on three-dimensional seismic comprehensive interpretation, which adopts the results of high-resolution three-dimensional seismic comprehensive interpretation to deploy sandstone-type uranium mine exploration wells, so as to solve the problems of reducing the exploration risk of sandstone-type uranium mines, improving exploration efficiency and increasing the ore-finding rate of exploration wells, thereby overcoming the huge exploration risks of conventional well deployment that only adopts a single-step method and a single ore-controlling factor.

[0006] The objective of the present invention is achieved through the following technical solutions:

[0007] A method for deploying well locations for sandstone-type uranium mine exploration based on 3D seismic comprehensive interpretation comprises the following steps:

[0008] a. Read in the comprehensive 3D seismic interpretation results for the target strata of sandstone-type uranium deposits, which are the five ore-controlling factors constituting the well location deployment;

[0009] b. Determine the preliminary well locations of the stratigraphic ore-controlling elements based on the target stratigraphic interpretation results, wherein the preliminary well locations are located at the global depression of the target stratigraphic target interface or the local depression of the slope;

[0010] c. Determine the preliminary well locations of fault-controlled ore elements based on the target stratum fault interpretation results, and the preliminary well locations are all located at the intersection of multiple faults at the target stratum target interface or in the vicinity of a large fault;

[0011] d. Determine the preliminary well locations of sedimentary ore-controlling elements based on the results of the target stratum sedimentary characteristics analysis. The preliminary well locations are located at the intersection of multiple meandering river channels at the target stratum target interface or at the center of a large-scale braided river beach;

[0012] e. Determine the preliminary well locations of lithologic ore-controlling factors based on the lithologic inversion results of the target strata, and the preliminary well locations are all located at the edge of the thick sand body of the target strata or in the transition zone of sand-mud interaction;

[0013] f. Determine the preliminary well locations of ore-bearing and ore-controlling elements based on the inversion results of the target stratum mineralization, wherein the preliminary well locations are located at the extreme points of each uranium abnormally high value area in the target stratum;

[0014] g. Conduct cross-evaluation among various ore-controlling factors for the preliminary well locations determined based on each single ore-controlling factor;

[0015] h. Optimize the final exploration well location based on the comprehensive index after cross-evaluation in step g.

[0016] Furthermore, in step a, the five ore-controlling elements constituting the well location deployment include target stratum position interpretation, fault interpretation, sedimentary characteristic analysis, lithology inversion and ore-bearing inversion results.

[0017] Furthermore, the stratigraphic interpretation results are obtained through steps such as stratigraphic calibration, stratigraphic tracking, and stratigraphic mapping of three-dimensional seismic data; the fault interpretation results are obtained through fault interpretation of three-dimensional seismic data; the sedimentary characteristic analysis results are obtained through steps such as extraction, optimization, and well location sedimentary phase calibration of three-dimensional seismic attribute stratigraphic slices; the lithological inversion results are obtained through steps such as rock physics sensitivity analysis, high-resolution seismic reservoir inversion, and lithological characteristic extraction; the mineralization inversion results are obtained through steps such as mineralization sensitive parameter analysis, high-resolution seismic reservoir inversion, and mineralization characteristic extraction.

[0018] Furthermore, step g is specifically as follows: cross-evaluation is conducted on the conditions of the other four ore-controlling factors except the reference ore-controlling factors used when the initial well site is determined.

[0019] Furthermore, step h is specifically as follows: the ore-controlling factor rating is divided into three grades: A, B, and C. Preferably, the preliminary well site that performs well in all five ore-controlling factors mentioned in step a and has the highest comprehensive index value is the final exploration well site.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] Aiming at the problems existing in the conventional well location deployment of sandstone-type uranium mine exploration, the present invention proposes a method for well location deployment of sandstone-type uranium mine exploration based on three-dimensional seismic comprehensive interpretation by using the results of three-dimensional seismic comprehensive interpretation. The method has the following advantages:

[0022] 1. When deploying the exploration wells for sandstone-type uranium deposits, the results of 3D seismic comprehensive interpretation were fully utilized in terms of basic data utilization, which can comprehensively and finely characterize the sandstone-type uranium reservoirs from five aspects: stratigraphy, faults, sedimentation, lithology and mineralization;

[0023] 2. Compared with other geological and geophysical data, 3D seismic data has the characteristics of high spatial resolution, which can realize high-resolution analysis of various ore-controlling elements of sandstone-type uranium reservoirs;

[0024] 3. Based on the results of 3D seismic comprehensive interpretation, 3D data bodies are used to comprehensively and finely describe the five aspects of sandstone-type uranium reservoirs, including stratigraphy, faults, sedimentation, lithology and mineralization, which can truly achieve 3D transparency and visualization of the target stratum sandstone-type uranium reservoirs, thereby improving the accuracy of exploration well deployment;

[0025] 4. When deploying well locations, the method of the present invention adopts a progressive well location deployment method that first implements a preliminary well location selection based on a single ore-controlling factor, then implements a cross-evaluation between various ore-controlling factors, and finally determines the final exploration well location based on the comprehensive index of all ore-controlling factors, thereby enabling the well location deployment to be implemented in a more rigorous process control;

[0026] 5. When deploying well locations, the method of the present invention adopts a method of cross-evaluation and comprehensive rating of multiple mining control factors, which can avoid the problem of insufficient reference information in the well location determination scheme of a single factor, thereby greatly reducing the risk of well location deployment;

[0027] 6. Comprehensive analysis shows that the method of the present invention adopts the comprehensive interpretation results of three-dimensional seismic to more comprehensively describe the characteristics of various aspects of sandstone-type uranium reservoirs. By making the uranium reservoirs transparent and visualized with high resolution, and adopting progressive process management and comprehensive evaluation of multiple mining control factors to carry out well location deployment, the method of the present invention can reduce exploration risks, improve exploration efficiency and the actual ore-finding rate in sandstone-type uranium exploration. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Flow chart of the method for deploying well locations for sandstone-type uranium deposit exploration based on comprehensive three-dimensional seismic interpretation of the present invention;

[0029] Figure 2 A schematic diagram of a detailed implementation process of a specific embodiment of the method of the present invention;

[0030] Figure 3 is a diagram showing the effect of the embodiment. Figure 3a The sand bodies and uranium anomaly discovered in the actual drilling of the stratigraphic well 05; Figure 3b The sand bodies and uranium anomaly discovered in the actual drilling of Mine 01; Figure 3c The sand bodies and uranium anomaly discovered in the actual drilling of Mine 05; Figure 3d The consistency rate between the lithology inversion of stratigraphic well 05, ore-bearing well 01, and ore-bearing well 05 and the sand bodies actually drilled. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0032] The present invention makes full use of the results of comprehensive three-dimensional seismic interpretation of sandstone-type uranium deposits, proposes an exploration well location deployment method that combines progressive process management with cross-evaluation, mutual support and comprehensive rating among multiple ore-controlling factors, and gives its detailed implementation process and application effect through specific embodiments.

[0033] like Figure 1 As shown, the present invention relates to a method for deploying well locations for sandstone-type uranium mine exploration based on 3D seismic comprehensive interpretation, comprising the following steps:

[0034] a. Read in the comprehensive 3D seismic interpretation results for the target strata of sandstone-type uranium deposits, including: target strata horizon interpretation, fault interpretation, sedimentary characteristics analysis, lithology inversion, and mineralization inversion results, which constitute the five ore-controlling elements for well location deployment;

[0035] b. Determine the preliminary well locations of the stratigraphic ore-controlling elements based on the target stratigraphic interpretation results. These preliminary well locations are located in the global depression of the target stratigraphic target interface or the local depression of the slope;

[0036] c. Determine the preliminary well locations of fault-controlled ore elements based on the results of fault interpretation of the target stratum. These preliminary well locations are located at the intersection of multiple faults at the target stratum target interface or in the vicinity of large faults;

[0037] d. Determine the preliminary well locations of sedimentary ore-controlling elements based on the results of the target stratum sedimentary characteristics analysis. These preliminary well locations are located at the intersection of multiple meandering river channels at the target stratum target interface or at the center of a large-scale braided river beach;

[0038] e. Determine the preliminary well locations of lithologic ore-controlling factors based on the lithologic inversion results of the target strata. These preliminary well locations are located at the edge of the thick sand body of the target strata or in the transition zone of sand-mud interaction;

[0039] f. Determine the preliminary well locations of ore-bearing and ore-controlling elements based on the inversion results of the target stratum mineralization. These preliminary well locations are located at the extreme points of each uranium abnormal high value area in the target stratum;

[0040] g. Conduct cross-evaluation among various ore-controlling factors for the preliminary well locations determined based on each single ore-controlling factor, that is, conduct cross-evaluation among the other four ore-controlling factors except the reference ore-controlling factor when determining the preliminary well locations;

[0041] h. Select the final exploration well locations based on the comprehensive index after cross-evaluation in step g, that is, select the preliminary well locations with the highest comprehensive index values ​​that perform well in all five ore-controlling factors mentioned in step a as the final exploration well locations.

[0042] In order to better illustrate the effect of the above specific implementation method, a specific example is given below.

[0043] Example

[0044] a. Figure 2The part of the schematic diagram pointed to by step a reads in the comprehensive 3D seismic interpretation results for the target strata of sandstone-type uranium deposits, including: target stratum horizon interpretation, fault interpretation, sedimentary characteristic analysis, lithology inversion, and mineralization inversion results, which constitute the five ore-controlling elements of well location deployment. Among them: the horizon interpretation results are obtained through the steps of horizon calibration, horizon tracking, and horizon mapping of 3D seismic data; the fault interpretation results are obtained through the fault interpretation of 3D seismic data; the sedimentary characteristic analysis results are obtained through the steps of extraction, optimization, and well location sedimentary phase calibration of 3D seismic attribute stratigraphic slices; the lithology inversion results are obtained through the steps of rock physics sensitivity analysis, high-resolution seismic reservoir inversion, and lithology characteristic extraction; the mineralization inversion results are obtained through the steps of mineralization sensitive parameter analysis, high-resolution seismic reservoir inversion, and mineralization characteristic extraction;

[0045] b. Figure 2 The schematic diagram pointed to in step b determines the preliminary well locations of the stratigraphic ore-controlling elements based on the target stratum stratigraphic interpretation results. These preliminary well locations are all located in the global depression of the target stratum target interface or the local depression of the slope; among them: in this embodiment, a total of 5 preliminary well locations of the stratigraphic ore-controlling elements are deployed, and they are all A( Figure 2 Step b points to the content circled by the purple dotted line. Note: The ore-controlling factor rating is divided into three levels: A, B, and C, which correspond to the situation where the well location is very favorable, generally favorable, and unfavorable for the ore-controlling factor in sandstone-type uranium mineralization, respectively (the same below);

[0046] c. Figure 2 The schematic diagram pointed to in step c determines the preliminary well locations of fault-controlled ore elements based on the target stratum fault interpretation results. These preliminary well locations are located at the intersection of multiple faults at the target stratum target interface or in the vicinity of large faults. Among them: In this embodiment, a total of 6 preliminary well locations of fault-controlled ore elements are deployed, and they are all rated A( Figure 2 Step c points to the content enclosed by the purple dotted box);

[0047] d. Figure 2 The schematic diagram pointed to in step d determines the preliminary well locations of sedimentary ore-controlling factors based on the analysis results of the target stratum sedimentary characteristics. These preliminary well locations are located at the intersection of multiple meandering rivers at the target stratum target interface or at the center of a large-scale braided river beach. Among them: This embodiment deploys a total of 5 preliminary well locations of sedimentary ore-controlling factors, and they are all rated A( Figure 2 Step d refers to the content enclosed by the purple dotted box);

[0048] e. Figure 2The schematic diagram pointed to in step e determines the preliminary well locations of lithologic ore-controlling factors based on the lithologic inversion results of the target stratum. These preliminary well locations are all located at the edge of the thick sand body of the target stratum or in the transition zone of sand-mud interaction. Among them: In this embodiment, a total of 7 preliminary well locations of lithologic ore-controlling factors are deployed, and they are all rated A( Figure 2 Step e points to the content encircled by the purple dotted line);

[0049] f. Figure 2 The schematic diagram pointed to in step f determines the preliminary well locations of the ore-bearing and ore-controlling elements based on the inversion results of the target stratum ore-bearing properties. These preliminary well locations are all located at the extreme points of each uranium abnormal high-value area in the target stratum. Among them: In this embodiment, a total of 6 preliminary well locations of ore-bearing and ore-controlling elements are deployed, and they are all A( Figure 2 Step f points to the content enclosed by the purple dotted box);

[0050] g. Figure 2 The part of the diagram pointed to by step g ( Figure 2 The content encircled by the red dotted line frame is excluded from the content encircled by the purple dotted line frame), and the preliminary well locations determined based on each single ore-controlling factor are cross-evaluated among various ore-controlling factors, that is, the other four ore-controlling factors except the reference ore-controlling factor when the preliminary well locations are determined are cross-evaluated, among which: after the cross-evaluation, each preliminary well location will have rating indicators corresponding to the five ore-controlling factors ( Figure 2 The five rating indicators corresponding to each well name in the ore-controlling factors are all A in their own initial selection, but they may be rated A, B, or C in the rating of the other four ore-controlling factors ( Figure 2 The other four items in the five columns of rating indicators corresponding to each preliminary well name except the one circled in the purple dotted box);

[0051] h. Figure 2 The three wells pointed out in step h are selected according to the comprehensive index after cross-evaluation in step g, that is, the preliminary selected wells with the highest comprehensive index value that perform well in all the five ore-controlling factors mentioned in step a are selected as the final exploration wells, where: Figure 2 As shown in Figure 2, the three wells finally selected all have A ratings for the five ore-controlling factors, and their comprehensive indexes are all 5 (e.g. Figure 2 The wells corresponding to the yellow filled boxes are stratum well 05, ore-bearing well 01 and ore-bearing well 06).

[0052] Figure 3 shows Figure 2 The example shown in FIG. 4 is an analysis of the actual drilling conditions of the three wells that were ultimately determined. Figure 3aThe right side shows the superposition of the lithology (sand body encountered) of the actual drilling of well 05 and the lithology inversion results, with an overall coincidence rate of 83.3% ( Figure 3d Line 2). Among them, Figure 3a The left side shows the uranium anomaly found at the target interface of the target formation during the actual drilling of well 05. It can be clearly seen Figure 3a An obvious uranium anomaly was encountered in the target location circled by the red oval dotted box. Figure 3b The right side shows the superposition of the lithology (sand body encountered in drilling) of the actual drilling of the mine 01 and the lithology inversion results, with an overall coincidence rate of 83.3% ( Figure 3d Line 4); Figure 3b The left side shows the uranium anomaly found at the target interface of the target formation during the actual drilling of the mine 01. It can be clearly seen Figure 3b An obvious uranium anomaly was encountered in the target location circled by the red oval dotted box. Figure 3c The right side shows the superposition of the lithology (sand body encountered in drilling) of the actual drilling of Well 05 and the lithology inversion results, with an overall coincidence rate of 85.8% ( Figure 3d Line 6); Figure 3c The left side shows the uranium anomaly found at the target interface of the target formation during the actual drilling of the mine 05. It can be clearly seen Figure 3c The target position circled by the red oval dotted line frame in the middle has an obvious uranium anomaly. The above results fully show that the actual drilling situation of the method of the present invention on the two ore-controlling factors of lithology (drilling sand body) and mineralization (drilling uranium anomaly) that are of most concern in sandstone-type uranium deposit exploration is good, among which the average matching rate of drilling sand body is as high as 84.13%, and uranium anomalies are drilled at the target interface position of the target formation.

[0053] The above examples make full use of the results of comprehensive interpretation of three-dimensional seismic data for sandstone-type uranium deposits. First, various single ore-controlling factors are used to determine 29 preliminary well locations. Then, through cross-evaluation, mutual verification and comprehensive rating among various ore-controlling factors, the three sandstone-type uranium deposit exploration well locations in the study area of ​​the example are finally determined. The above analysis of actual drilling conditions fully illustrates the effectiveness and effect of the method of the present invention. At the same time, the above examples also show that the method of the present invention has the following advantages:

[0054] 1. When deploying the exploration wells for sandstone-type uranium deposits, the results of 3D seismic comprehensive interpretation were fully utilized in terms of basic data utilization. They can comprehensively and finely characterize the sandstone-type uranium reservoirs from five aspects: stratigraphy, faults, sedimentation, lithology and mineralization;

[0055] 2. Compared with other geological and geophysical data, 3D seismic data has the characteristic of high spatial resolution, which can truly realize high-resolution analysis of various ore-controlling elements of sandstone-type uranium reservoirs;

[0056] 3. Based on the results of 3D seismic comprehensive interpretation, 3D data bodies are used to comprehensively and finely describe the five aspects of sandstone-type uranium reservoirs, including stratigraphy, faults, sedimentation, lithology and mineralization. They can truly realize the 3D transparency and visualization of the target stratum sandstone-type uranium reservoirs, thereby improving the accuracy of exploration well location deployment;

[0057] 4. When deploying well locations, the method of the present invention adopts a progressive well location deployment method of "first implementing well location preliminary selection based on a single ore-controlling factor, then implementing cross-evaluation between various ore-controlling factors, and finally determining the final exploration well location based on the comprehensive index of all ore-controlling factors", thereby enabling well location deployment to be implemented in a more rigorous process control;

[0058] 5. When deploying well locations, the method of the present invention adopts a method of cross-evaluation and comprehensive rating of multiple mining control factors, which can avoid the problem of insufficient reference information in the well location determination scheme of a single factor, thereby greatly reducing the risk of well location deployment;

[0059] 6. Comprehensive analysis shows that the method of the present invention adopts the comprehensive interpretation results of three-dimensional seismic to more comprehensively describe the characteristics of various aspects of sandstone-type uranium reservoirs. By making the uranium reservoirs transparent and visualized with high resolution, and adopting progressive process management and comprehensive evaluation of multiple mining control factors to carry out well location deployment, the method of the present invention can reduce exploration risks, improve exploration efficiency and the actual ore-finding rate in sandstone-type uranium exploration.

Claims

1. A method for deploying well locations for sandstone-type uranium mine exploration based on 3D seismic comprehensive interpretation, characterized in that: The steps include: a. Read in the comprehensive 3D seismic interpretation results for the target strata of sandstone-type uranium deposits. The comprehensive 3D seismic interpretation results are the five ore-controlling factors for well location deployment; the five ore-controlling factors for well location deployment include target stratum horizon interpretation, fault interpretation, sedimentary characteristic analysis, lithology inversion and mineralization inversion results; b. Determine the preliminary well locations of the stratigraphic ore-controlling elements based on the target stratigraphic interpretation results, wherein the preliminary well locations are located at the global depression of the target stratigraphic target interface or the local depression of the slope; c. Determine the preliminary well locations of fault-controlled ore elements based on the target stratum fault interpretation results, and the preliminary well locations are all located at the intersection of multiple faults at the target stratum target interface or in the vicinity of a large fault; d. Determine the preliminary well locations of sedimentary ore-controlling elements based on the results of the target stratum sedimentary characteristics analysis. The preliminary well locations are located at the intersection of multiple meandering river channels at the target stratum target interface or at the center of a large-scale braided river beach; e. Determine the preliminary well locations of lithologic ore-controlling factors based on the lithologic inversion results of the target strata, and the preliminary well locations are all located at the edge of the thick sand body of the target strata or in the transition zone of sand-mud interaction; f. Determine the preliminary well locations of ore-bearing and ore-controlling elements based on the inversion results of the target stratum mineralization, wherein the preliminary well locations are located at the extreme points of each uranium abnormally high value area in the target stratum; g. Conduct cross-evaluation among various ore-controlling factors for the preliminary well locations determined based on each single ore-controlling factor; specifically: conduct cross-evaluation among the other four ore-controlling factors except for the reference ore-controlling factor when the preliminary well locations are determined; h. Optimize the final exploration well location based on the comprehensive index after cross-evaluation in step g.

2. The method for deploying well locations for sandstone-type uranium mine exploration based on 3D seismic comprehensive interpretation according to claim 1, characterized in that: The horizon interpretation results are obtained through the horizon calibration, horizon tracking and horizon mapping steps of the three-dimensional seismic data; the fault interpretation results are obtained through the fault interpretation of the three-dimensional seismic data; The results of sedimentary characteristic analysis are obtained through the extraction, optimization, and well location sedimentary phase calibration steps of three-dimensional seismic attribute stratigraphic slices; the lithology inversion results are obtained through rock physics sensitivity analysis, high-resolution seismic reservoir inversion, and lithology characteristic extraction steps; the mineralization inversion results are obtained through mineralization sensitive parameter analysis, high-resolution seismic reservoir inversion, and mineralization characteristic extraction steps.

3. The method for deploying well locations for sandstone-type uranium mine exploration based on 3D seismic comprehensive interpretation according to claim 1, characterized in that: Step h, specifically: the ore-controlling factors are rated into three levels: A, B, and C. Preferably, the preliminary well site that performs well in all five ore-controlling factors mentioned in step a and has the highest comprehensive index value is the final exploration well site.

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