Multi-parameter evaluation method, exploration method and device for petroliferous basin sandstone type uranium deposit

Abstract

The invention discloses a multi-parameter evaluation method, exploration method and device for a petrol basin sandstone-type uranium deposit, and the method comprises the steps: analyzing the underground water level geological condition of a petrol basin and the uranium source condition at the periphery of the basin, carrying out the preliminary evaluation of the uranium deposit metallogenic potential of a target region, and determining a sandstone-type uranium deposit target region of the target region; obtaining a plurality of quasi-section diagrams of the sandstone type uranium mine target region along with depth change obtained by measurement based on a multi-frequency phase multi-parameter induced polarization sounding method; and carrying out joint inversion on the plurality of quasi-cross-section diagrams, carrying out evaluation on depth cross-section diagrams with different electrical parameters obtained based on the inversion and a drilling result of the sandstone-type uranium mine target region, and determining an association relationship between the electrical parameters of the sandstone-type uranium mine in the oil and gas basin and uranium mine body distribution and uranium mine body ore-bearing property. The method can accurately and objectively reflect uranium ore body distribution and the position of a redox transition zone closely related to uranium ore, and provides a new technical support for locking the metallogenic position and scale of the sandstone type uranium ore in the oil and gas basin.

Description

Technical Field

[0001] The invention relates to the technical field of exploration of associated uranium deposits in oil and gas basins, and in particular to a multi-parameter evaluation method, an exploration method and a device for sandstone-type uranium deposits in oil and gas basins. Background Art

[0002] Sandstone uranium deposits are a very important type of uranium deposits, accounting for about 40% of the world's total uranium deposits, and in my country, sandstone uranium deposits account for up to 50%. They are mainly enriched in oil and gas basins and are often associated with oil and gas. Since sandstone uranium deposits are mainly blind mines, their ore bodies are often covered by strata above 200 meters, which are highly concealed. The underground geological conditions are unclear, and the exploration results using traditional geophysical methods are not ideal, resulting in a low drilling success rate. Large-scale construction will cause huge economic losses. Summary of the invention

[0003] In order to accurately locate the reservoir of sandstone-type uranium ore, enrich the process route and increase the selection space, the embodiment of the present invention provides a multi-parameter evaluation method, exploration method and device for sandstone-type uranium ore in an oil and gas basin.

[0004] In a first aspect, an embodiment of the present invention provides a multi-parameter evaluation method for sandstone-type uranium deposits in an oil and gas basin, which may include:

[0005] Analyze the groundwater geological conditions of the oil and gas basin and the uranium source conditions outside the basin to make a preliminary evaluation of the uranium mineralization potential of the target area and determine the sandstone-type uranium target area of ​​the target area;

[0006] Acquire multiple pseudo-section diagrams of the sandstone-type uranium ore target area varying with depth, obtained by multi-frequency phase multi-parameter induced polarization sounding method;

[0007] A joint inversion is performed on the multiple pseudo-section diagrams to evaluate the depth profiles of different electrical parameters obtained by inversion and the drilling results of the sandstone-type uranium target area, so as to determine the correlation between the electrical parameters of the sandstone-type uranium deposits in the oil and gas basin and the distribution and mineralization of the uranium ore bodies.

[0008] Optionally, the acquiring of multiple pseudo-section diagrams of the sandstone-type uranium ore target area varying with depth obtained by multi-frequency phase multi-parameter induced polarization sounding may include:

[0009] A plurality of electrical parameters of the sandstone-type uranium ore target area measured based on a multi-frequency phase multi-parameter induced polarization sounding method are obtained, and a plurality of pseudo-section diagrams of the sandstone-type uranium ore target area varying with depth, generated based on the plurality of electrical parameters, are obtained.

[0010] Optionally, the multiple electrical parameters may include: resistivity, phase and dispersion; the multiple pseudo-section diagrams may include: a pseudo-section diagram of resistivity varying with depth, a pseudo-section diagram of phase varying with depth and a pseudo-section diagram of dispersion varying with depth.

[0011] Optionally, the depth profiles of different electrical parameters may include: a resistivity inversion profile, a charge rate inversion profile, and a polarizability inversion profile.

[0012] Optionally, the evaluation of the depth profiles of different electrical parameters obtained based on inversion and the drilling results of the sandstone-type uranium target area to determine the correlation between the electrical parameters of the sandstone-type uranium deposit in the oil and gas basin and the distribution and mineralization of the uranium ore body may include:

[0013] Based on the depth profiles of different electrical parameters obtained by inversion and the drilling results of the sandstone-type uranium target area, an evaluation was performed to determine that the resistivity is positively correlated with the distribution of the uranium ore body, and that the charging rate and polarizability are positively correlated with the mineralization of the uranium ore body.

[0014] Optionally, the analysis of the groundwater level geological conditions of the oil and gas basin and the uranium source conditions outside the basin to analyze the uranium mineralization potential of the target area and preliminarily determine the sandstone-type uranium target area may include:

[0015] An analysis of the underground hydrogeological conditions is conducted on the thickness of underground water-bearing sandstone and the fluidity of underground water in the oil and gas basin, as well as an analysis of the uranium source conditions on the distribution of uranium-bearing acidic granite in the mountains outside the basin, the uranium content in the acidic granite, and the weathering, denudation and migration of the acidic granite, in order to analyze the uranium mineralization potential of the target area and preliminarily determine the sandstone-type uranium target area.

[0016] In a second aspect, an embodiment of the present invention provides a method for exploring sandstone-type uranium deposits in an oil and gas basin, which may include:

[0017] Analyze the groundwater geological conditions of the oil and gas basin and the uranium source conditions outside the basin to make a preliminary evaluation of the uranium mineralization potential of the target area and determine the sandstone-type uranium target area of ​​the target area;

[0018] Acquire multiple pseudo-section diagrams of the sandstone-type uranium ore target area varying with depth, obtained by multi-frequency phase multi-parameter induced polarization sounding method;

[0019] Performing joint inversion on the plurality of pseudo-section diagrams to determine the distribution of uranium ore bodies and the mineralization of uranium ore bodies in sandstone-type uranium deposits based on the resistivity inversion profile diagram, the chargeability inversion profile diagram and the polarizability inversion profile diagram obtained by inversion, and the pre-constructed correlation between the electrical parameters of sandstone-type uranium deposits in oil and gas basins and the distribution of uranium ore bodies and the mineralization of uranium ore bodies;

[0020] The correlation between the electrical parameters of the sandstone-type uranium deposit in the oil and gas basin and the distribution and mineralization of the uranium ore body is pre-constructed according to the multi-parameter evaluation method for sandstone-type uranium deposit in the oil and gas basin described in the first aspect.

[0021] In a third aspect, an embodiment of the present invention provides a multi-parameter evaluation device for sandstone-type uranium deposits in an oil and gas basin, which may include:

[0022] The first analysis module is used to analyze the groundwater geological conditions of the oil and gas basin and the uranium source conditions outside the basin, so as to make a preliminary evaluation of the uranium mineralization potential of the target area and determine the sandstone-type uranium target area of ​​the target area;

[0023] The first acquisition module is used to acquire multiple pseudo-section diagrams of the sandstone-type uranium ore target area varying with depth, obtained by multi-frequency phase multi-parameter induced polarization sounding method;

[0024] An evaluation module is used to jointly invert the multiple pseudo-section diagrams to evaluate the depth profiles of different electrical parameters obtained by inversion and the drilling results of the sandstone-type uranium target area, and determine the correlation between the electrical parameters of the sandstone-type uranium deposit in the oil and gas basin and the distribution and mineralization of the uranium ore body.

[0025] In a fourth aspect, an embodiment of the present invention provides an exploration device for sandstone-type uranium deposits in an oil and gas basin, which may include:

[0026] The second analysis module is used to analyze the groundwater geological conditions of the oil and gas basin and the uranium source conditions outside the basin, so as to make a preliminary evaluation of the uranium mineralization potential of the target area and determine the sandstone-type uranium target area of ​​the target area;

[0027] The second acquisition module is used to obtain multiple pseudo-section diagrams of the sandstone-type uranium ore target area varying with depth, obtained by multi-frequency phase multi-parameter induced polarization sounding method;

[0028] A determination module is used to jointly invert the plurality of pseudo-section diagrams to determine the distribution of uranium ore bodies and the mineralization of uranium ore bodies in sandstone-type uranium deposits based on the resistivity inversion profile diagram, the charge rate inversion profile diagram and the polarizability inversion profile diagram obtained by inversion, and the pre-constructed correlation between the electrical parameters of sandstone-type uranium deposits in oil and gas basins and the distribution of uranium ore bodies and the mineralization of uranium ore bodies;

[0029] The correlation between the electrical parameters of the sandstone-type uranium deposit in the oil and gas basin and the distribution and mineralization of the uranium ore body is pre-constructed according to the multi-parameter evaluation method for sandstone-type uranium deposit in the oil and gas basin described in the first aspect.

[0030] In a fifth aspect, an embodiment of the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the multi-parameter evaluation method for sandstone-type uranium deposits in oil and gas basins as described in the first aspect, or implements the exploration method for sandstone-type uranium deposits in oil and gas basins as described in the second aspect.

[0031] In a sixth aspect, an embodiment of the present invention provides a computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the multi-parameter evaluation method for sandstone-type uranium deposits in oil and gas basins as described in the first aspect is implemented, or the exploration method for sandstone-type uranium deposits in oil and gas basins as described in the second aspect is implemented.

[0032] The beneficial effects of the above technical solution provided by the embodiment of the present invention include at least:

[0033] The embodiment of the present invention provides a multi-parameter evaluation method, exploration method and device for sandstone-type uranium deposits in oil and gas basins. The method can accurately and objectively reflect the distribution of sand bodies, the distribution of uranium ore bodies and the position of redox transition zones closely related to uranium deposits, provide new technical support for quickly locking the mineralization position and scale of sandstone-type uranium deposits in oil and gas basins in uranium exploration, and provide a "more, faster, better and more economical" detection solution for the prediction of associated sandstone-type uranium deposits in vast oil and gas basins.

[0034] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings.

[0035] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0037] Figure 1 This is a flow chart of the multi-parameter evaluation method for sandstone-type uranium deposits in oil and gas basins provided in Example 1 of the present invention;

[0038] Figure 2 A flowchart of a detailed multi-parameter evaluation method for sandstone-type uranium deposits in oil and gas basins provided in Example 1 of the present invention;

[0039] Figure 3 This is a schematic diagram of the layout of the field data collection device provided in the first embodiment of the present invention;

[0040] Figure 4 It is a resistivity pseudo-section diagram provided in the first embodiment of the present invention;

[0041] Figure 5 It is a pseudo cross-sectional view of the visual phase provided in the first embodiment of the present invention;

[0042] Figure 6 It is a pseudo-section diagram of the dispersion rate provided in the first embodiment of the present invention;

[0043] Figure 7 The resistivity inversion profile diagram provided in the first embodiment of the present invention;

[0044] Figure 8 This is a charging rate inversion profile diagram provided in the first embodiment of the present invention;

[0045] Fig. 9 This is a cross-sectional diagram of polarizability inversion provided in Embodiment 1 of the present invention;

[0046] Fig.10 This is a schematic diagram of the structure of a multi-parameter evaluation device for sandstone-type uranium deposits in an oil and gas basin provided in Example 1 of the present invention;

[0047] Fig.11 This is a flow chart of the method for exploring sandstone-type uranium deposits in oil and gas basins provided in the second embodiment of the present invention;

[0048] Fig.12 A three-dimensional display diagram of the predicted redox transition zone provided in the second embodiment of the present invention;

[0049] Fig.13 This is a verification effect diagram of a uranium mine block provided in Example 2 of the present invention;

[0050] Fig.14 This is a schematic diagram of the structure of an exploration device for sandstone-type uranium deposits in oil and gas basins provided in the second embodiment of the present invention. DETAILED DESCRIPTION

[0051] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0052] Embodiment 1

[0053] In the first embodiment of the present invention, a multi-parameter evaluation method for sandstone-type uranium deposits in oil and gas basins is proposed. Based on summarizing the geological occurrence laws of multiple sandstone-type uranium deposits found in oil and gas basins, the inventor integrates detection methods, data acquisition instruments and devices, data processing parameters, and comprehensive application of multiple parameters to propose a method for comprehensively evaluating the enrichment location of sandstone-type uranium deposits. Figure 1 As shown, the method may include the following steps:

[0054] Step S11: Analyze the groundwater geological conditions of the oil and gas basin and the uranium source conditions outside the basin to make a preliminary evaluation of the uranium mineralization potential of the target area and determine the sandstone-type uranium target area of ​​the target area.

[0055] Step S12, obtaining a plurality of pseudo-section diagrams of the sandstone-type uranium target area varying with depth, obtained by measuring the multi-frequency phase multi-parameter induced polarization sounding method.

[0056] Step S13, jointly inverting multiple pseudo-section diagrams to evaluate the depth profiles of different electrical parameters obtained by inversion and the drilling results of the sandstone-type uranium target area, and determine the correlation between the electrical parameters of sandstone-type uranium deposits in oil and gas basins and the distribution and mineralization of uranium ore bodies.

[0057] The multi-parameter evaluation method for sandstone-type uranium deposits in oil and gas basins provided in the embodiments of the present invention can accurately and objectively reflect the distribution of sand bodies, the distribution of uranium ore bodies and the position of the redox transition zone closely related to uranium deposits, and provides new technical support for quickly locking the mineralization position and scale of sandstone-type uranium deposits in oil and gas basins in uranium exploration, and provides a "more, faster, better and more economical" detection solution for the prediction of associated sandstone-type uranium deposits in vast oil and gas basins.

[0058] In a detailed embodiment, referring to Figure 2 As shown, the multi-parameter evaluation method for sandstone-type uranium deposits in the above-mentioned oil and gas basin may include the following steps:

[0059] Step S21: Analyze the underground hydrogeological conditions of the thickness of underground water-bearing sandstone and the fluidity of underground water in the oil and gas basin, and analyze the uranium source conditions of the distribution of uranium-bearing acidic granite in the mountains outside the basin, the uranium content in the acidic granite, and the weathering, denudation and migration of the acidic granite, so as to analyze the uranium mineralization potential of the target area and preliminarily determine the sandstone-type uranium target area.

[0060] This step conducts preliminary exploration of the target area to determine the sandstone-type uranium target area. It should be noted that the sandstone-type uranium target area refers to the area that has the conditions for sandstone-type uranium enrichment, but it is not necessarily capable of mineralization. This step can belong to the preliminary investigation stage, laying the foundation for the implementation of induced polarization sounding measurement in the subsequent steps.

[0061] Step S22, obtaining multiple electrical parameters of the sandstone-type uranium target area measured based on the multi-frequency phase multi-parameter induced polarization sounding method, and obtaining multiple pseudo-section diagrams of the sandstone-type uranium target area that vary with depth and are generated based on the multiple electrical parameters.

[0062] In the embodiment of the present invention, the following Figure 3 The power supply signal electrode and the receiving signal electrode cross data acquisition device shown are used to carry out high-density, multiple-time data coverage multi-frequency phase multi-parameter induced polarization sounding method, and the well data are processed to obtain the electrical parameters of the target area. Figure 3 In the figure, the light gray column represents the multi-frequency square wave current transmitting power supply electrode, the dark gray column represents the voltage signal receiving electrode, and the circles, hearts, and triangles below represent the distribution positions of the recording points at different depths underground.

[0063] The plurality of electrical parameters may include: resistivity, phase and dispersion; the plurality of pseudo-section diagrams may include: a pseudo-section diagram of resistivity varying with depth, a pseudo-section diagram of phase varying with depth and a pseudo-section diagram of dispersion varying with depth. Figures 4 to 6 As shown, when establishing the correlation between the electrical parameters of the sandstone-type uranium deposits in the oil and gas basin and the distribution and mineralization of the uranium ore bodies in the above-mentioned oil and gas basin in an embodiment of the present invention, the pseudo-section diagram of different electrical parameters obtained by induced polarization sounding method on multiple sandstone-type uranium deposits is shown. Figures 4 to 6 The horizontal axis is the coordinate of the measuring point, the vertical axis is the depth, and the contour lines are the parameter change curves at different depths.

[0064] The calculation formulas for different electrical parameters in this step are as follows:

[0065] (1) Apparent resistivity

[0066] Apparent resistivity The calculation formula is:

[0067] Where K is the device coefficient of the geometric arrangement of the transmitting and receiving electrodes, To calculate the voltage spectrum of different frequencies and the current spectrum of the transmitted signal of different frequencies, U ρs (f) V ρs (f) are the real and imaginary parts of the recorded signal obtained after Fourier transform calculation.

[0068] (2) Apparent phase

[0069] The apparent phase calculation formula is:

[0070] The unit of phase is "milliradian", the English unit is mrad.

[0071] (3) Dispersion rate

[0072] The formula for calculating the dispersion rate is as follows:

[0073] In the formula, ρ fd ρ fg is the low-frequency and high-frequency resistivity.

[0074] Step S23, based on the depth profiles of different electrical parameters obtained by inversion and the drilling results of the sandstone-type uranium target area, an evaluation is performed to determine that the resistivity is positively correlated with the distribution of the uranium ore body, and that the charge rate and polarizability are positively correlated with the mineralization of the uranium ore body.

[0075] In this step, multiple pseudo-sections of the sandstone-type uranium target area generated by the above-mentioned multiple electrical parameters are jointly inverted to obtain the real depth profiles of resistivity, polarizability, charge rate, etc. at different measuring points of the survey line. The depth profiles of different electrical parameters include: resistivity inversion profile, charge rate inversion profile and polarizability inversion profile.

[0076] Reference Figure 7 to Figure 9 As shown in the figure, the resistivity depth profile reflects the conductivity of the stratum. The thicker the sandstone stratum, the higher the resistivity. From this, the distribution of sand bodies closely related to uranium ore bodies can be predicted. The polarizability depth profile and the charge rate depth profile both reflect the mineralization. The larger the polarizability and charge rate values, the better the mineralization.

[0077] The attribute parameter maps at different depths drawn by the above method provided in the embodiment of the present invention can accurately and objectively reflect the distribution of the formation sand body and the position of the redox transition zone closely related to the uranium ore body.

[0078] Based on the same inventive concept, the present invention also provides a multi-parameter evaluation device for sandstone-type uranium deposits in an oil and gas basin. Fig.10 As shown, the device may include: a first analysis module 11, an acquisition module 12 and an evaluation module 13, and its working principle is as follows:

[0079] The first analysis module 11 is used to analyze the groundwater geological conditions of the oil and gas basin and the uranium source conditions outside the basin, so as to make a preliminary evaluation of the uranium mineralization potential of the target area and determine the sandstone type uranium target area of ​​the target area;

[0080] The first acquisition module 12 is used to obtain multiple pseudo-section diagrams of the sandstone-type uranium ore target area varying with depth, obtained by multi-frequency phase multi-parameter induced polarization sounding method;

[0081] The evaluation module 13 is used to perform joint inversion on multiple pseudo-section diagrams, so as to evaluate the depth profiles of different electrical parameters obtained by inversion and the drilling results of the sandstone-type uranium target area, and determine the correlation between the electrical parameters of sandstone-type uranium deposits in oil and gas basins and the distribution and mineralization of uranium ore bodies.

[0082] In an optional embodiment, the first acquisition module 12 is specifically used to: obtain multiple electrical parameters of the sandstone-type uranium mine target area measured based on the multi-frequency phase multi-parameter induced polarization sounding method, and obtain multiple pseudo-section diagrams of the sandstone-type uranium mine target area that vary with depth and are generated based on the multiple electrical parameters.

[0083] In another optional embodiment, the multiple electrical parameters may include: resistivity, phase and dispersion rate; the multiple pseudo-cross-section diagrams may include: pseudo-cross-section diagram of resistivity varying with depth, pseudo-cross-section diagram of phase varying with depth and pseudo-cross-section diagram of dispersion rate varying with depth.

[0084] In another optional embodiment, the depth profiles of different electrical parameters may include: a resistivity inversion profile, a charge rate inversion profile, and a polarizability inversion profile.

[0085] In another optional embodiment, the evaluation module 13 is specifically used to: evaluate based on the depth profile of different electrical parameters obtained by inversion and the drilling results of the sandstone-type uranium target area, determine that the resistivity is positively correlated with the distribution of the uranium ore body, and that the charging rate and polarizability are positively correlated with the mineralization of the uranium ore body.

[0086] In another optional embodiment, the first analysis module 11 is specifically used to analyze the underground hydrogeological conditions of the thickness of underground water-bearing sandstone and the fluidity of underground water in the oil and gas basin, and to analyze the uranium source conditions of the distribution of uranium-containing acidic granite in the mountains outside the basin, the uranium content in the acidic granite, and the weathering, denudation and migration of the acidic granite, so as to analyze the uranium mineralization potential of the target area and preliminarily determine the sandstone-type uranium target area.

[0087] Based on the same inventive concept, an embodiment of the present invention further provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the multi-parameter evaluation method for sandstone-type uranium deposits in oil and gas basins is implemented.

[0088] Based on the same inventive concept, a computer device is also provided in an embodiment of the present invention, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the multi-parameter evaluation method for sandstone-type uranium deposits in the oil and gas basin is implemented.

[0089] The principles of the problems solved by the above-mentioned devices, media, and related equipment in the embodiments of the present invention are similar to those of the above-mentioned methods, so their implementation can refer to the implementation of the above-mentioned methods, and the repeated parts will not be repeated.

[0090] Embodiment 2

[0091] In the second embodiment of the present invention, a method for exploring sandstone-type uranium deposits in an oil and gas basin is provided. Fig.11 As shown, the method may include the following steps:

[0092] Step S111: Analyze the groundwater geological conditions of the oil and gas basin and the uranium source conditions outside the basin to make a preliminary evaluation of the uranium mineralization potential of the target area, and then determine the sandstone uranium target area of ​​the target area. This step can refer to the above step S11 or step S21 when it is implemented, but the above target area in this step is an area that has not been verified by drilling. This method provides a basis for the later arrangement of drilling, which will not be repeated here.

[0093] Step S112, obtaining multiple pseudo-sections of the sandstone-type uranium target area varying with depth based on multi-frequency phase multi-parameter induced polarization sounding. This step can be specifically implemented with reference to the above step S12 or step S22, and will not be described in detail here.

[0094] Step S113, jointly inverting multiple pseudo-section diagrams to determine the uranium ore body distribution and the uranium ore body mineralization of the sandstone type uranium mine based on the resistivity inversion profile diagram, the charge rate inversion profile diagram and the polarizability inversion profile diagram obtained by inversion, and the pre-constructed correlation relationship between the electrical parameters of the sandstone type uranium mine in the oil and gas basin and the uranium ore body distribution and the uranium ore body mineralization; wherein the correlation relationship between the electrical parameters of the sandstone type uranium mine in the oil and gas basin and the uranium ore body distribution and the uranium ore body mineralization is pre-constructed according to the multi-parameter evaluation method for sandstone type uranium mines in oil and gas basins in Example 1.

[0095] The above exploration method for sandstone-type uranium deposits in oil and gas basins can quickly identify the mineralization site of sandstone-type uranium deposits in oil and gas basins - the redox transition zone. This method can quantitatively predict the distribution of the redox transition zone closely related to sandstone-type uranium deposits through statistical analysis of a variety of electrical parameters and electrochemical parameters. Fig.12 As shown in the figure, it is the redox transition zone delineated in the target area according to the above method. The area enclosed by the solid circle is the sandstone-type uranium mineralization site in the oil and gas basin, which provides a basis for the subsequent drilling layout. Fig.13 As shown, based on the exploration method for sandstone-type uranium deposits in oil and gas basins provided by an embodiment of the present invention, a certain area is verified. The light-colored area in the figure is a redox transition zone delineated based on electrical parameter anomalies, on which 25 wells are constructed, of which 19 wells have uranium ores reaching the industrial ore deposit grade, with a matching rate of up to 76%. Among them, the wells with circles and solid triangles in the figure represent uranium ores that have reached the industrial ore deposit grade.

[0096] Based on the same inventive concept, an exploration device for sandstone-type uranium deposits in an oil and gas basin is also provided in an embodiment of the present invention. Fig.14As shown, the device may include: a second analysis module 131, a second acquisition module 132 and a determination module 133, and its working principle is as follows:

[0097] The second analysis module 131 is used to analyze the groundwater geological conditions of the oil and gas basin and the uranium source conditions outside the basin, so as to determine the sandstone-type uranium target area in the target area after making a preliminary evaluation of the uranium mineralization potential of the target area;

[0098] The second acquisition module 132 is used to obtain multiple pseudo-section diagrams of the sandstone-type uranium ore target area varying with depth, obtained by multi-frequency phase multi-parameter induced polarization sounding method;

[0099] The determination module 133 is used to perform a joint inversion on multiple pseudo-section diagrams to determine the uranium ore body distribution and the uranium ore body mineralization of the sandstone type uranium mine based on the resistivity inversion profile diagram, the charge rate inversion profile diagram and the polarizability inversion profile diagram obtained by inversion, as well as the pre-constructed correlation relationship between the electrical parameters of the sandstone type uranium mine in the oil and gas basin and the uranium ore body distribution and the uranium ore body mineralization; wherein the correlation relationship between the electrical parameters of the sandstone type uranium mine in the oil and gas basin and the uranium ore body distribution and the uranium ore body mineralization is pre-constructed according to the multi-parameter evaluation method for sandstone type uranium mines in the oil and gas basin described in Example 1.

[0100] Based on the same inventive concept, an embodiment of the present invention further provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the above-mentioned method for exploring sandstone-type uranium deposits in oil and gas basins is implemented.

[0101] Based on the same inventive concept, a computer device is also provided in an embodiment of the present invention, including a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the program, the above-mentioned method for exploring sandstone-type uranium deposits in oil and gas basins is implemented.

[0102] The principles of the problems solved by the above-mentioned devices, media, and related equipment in the embodiments of the present invention are similar to those of the above-mentioned methods, so their implementation can refer to the implementation of the above-mentioned methods, and the repeated parts will not be repeated.

[0103] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) containing computer-usable program code.

[0104] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0105] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0106] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0107] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A multi-parameter evaluation method for sandstone-type uranium deposits in oil and gas basins, characterized in that: include: Analyze the groundwater geological conditions of the oil and gas basin and the uranium source conditions outside the basin to make a preliminary evaluation of the uranium mineralization potential of the target area and determine the sandstone-type uranium target area of ​​the target area; Acquire multiple pseudo-section diagrams of the sandstone-type uranium ore target area varying with depth, obtained by multi-frequency phase multi-parameter induced polarization sounding method; A joint inversion is performed on the multiple pseudo-section diagrams to evaluate the depth profiles of different electrical parameters obtained by inversion and the drilling results of the sandstone-type uranium target area, so as to determine the correlation between the electrical parameters of the sandstone-type uranium deposits in the oil and gas basin and the distribution and mineralization of the uranium ore bodies.

2. The method according to claim 1, characterized in that The method of obtaining multiple pseudo-section diagrams of the sandstone-type uranium ore target area varying with depth obtained by multi-frequency phase multi-parameter induced polarization sounding method includes: A plurality of electrical parameters of the sandstone-type uranium ore target area measured based on a multi-frequency phase multi-parameter induced polarization sounding method are obtained, and a plurality of pseudo-section diagrams of the sandstone-type uranium ore target area varying with depth, generated based on the plurality of electrical parameters, are obtained.

3. The method according to claim 2, characterized in that The multiple electrical parameters include: resistivity, phase and dispersion rate; the multiple pseudo-section diagrams include: a pseudo-section diagram of resistivity varying with depth, a pseudo-section diagram of phase varying with depth and a pseudo-section diagram of dispersion rate varying with depth.

4. The method according to claim 1, characterized in that: The depth profiles of different electrical parameters include: resistivity inversion profile, charge rate inversion profile and polarizability inversion profile.

5. The method according to claim 4, characterized in that The depth profiles of different electrical parameters obtained based on inversion and the drilling results of the sandstone-type uranium ore target area are evaluated to determine the correlation between the electrical parameters of the sandstone-type uranium ore in the oil and gas basin and the distribution and mineralization of the uranium ore body, including: Based on the depth profiles of different electrical parameters obtained by inversion and the drilling results of the sandstone-type uranium target area, an evaluation was performed to determine that the resistivity is positively correlated with the distribution of the uranium ore body, and that the charging rate and polarizability are positively correlated with the mineralization of the uranium ore body.

6. The method according to any one of claims 1 to 5, characterized in that: The above analysis of the groundwater level geological conditions of the oil and gas basin and the uranium source conditions outside the basin is carried out to analyze the uranium mineralization potential of the target area and preliminarily determine the sandstone type uranium target area, including: An analysis of the underground hydrogeological conditions is conducted on the thickness of underground water-bearing sandstone and the fluidity of underground water in the oil and gas basin, as well as an analysis of the uranium source conditions on the distribution of uranium-bearing acidic granite in the mountains outside the basin, the uranium content in the acidic granite, and the weathering, denudation and migration of the acidic granite, in order to analyze the uranium mineralization potential of the target area and preliminarily determine the sandstone-type uranium target area.

7. A method for exploring sandstone-type uranium deposits in oil and gas basins, characterized in that: include: Analyze the groundwater geological conditions of the oil and gas basin and the uranium source conditions outside the basin to make a preliminary evaluation of the uranium mineralization potential of the target area and determine the sandstone-type uranium target area of ​​the target area; Acquire multiple pseudo-section diagrams of the sandstone-type uranium ore target area varying with depth, obtained by multi-frequency phase multi-parameter induced polarization sounding method; Performing joint inversion on the plurality of pseudo-section diagrams to determine the distribution of uranium ore bodies and the mineralization of uranium ore bodies in sandstone-type uranium deposits based on the resistivity inversion profile diagram, the chargeability inversion profile diagram and the polarizability inversion profile diagram obtained by inversion, and the pre-constructed correlation between the electrical parameters of sandstone-type uranium deposits in oil and gas basins and the distribution of uranium ore bodies and the mineralization of uranium ore bodies; The correlation between the electrical parameters of the sandstone-type uranium deposit in the oil and gas basin and the distribution and mineralization of the uranium ore body is pre-constructed according to the multi-parameter evaluation method for sandstone-type uranium deposit in the oil and gas basin according to any one of claims 1 to 6.

8. A multi-parameter evaluation device for sandstone-type uranium deposits in oil and gas basins, characterized in that: include: The first analysis module is used to analyze the groundwater geological conditions of the oil and gas basin and the uranium source conditions outside the basin, so as to make a preliminary evaluation of the uranium mineralization potential of the target area and determine the sandstone-type uranium target area of ​​the target area; The first acquisition module is used to acquire multiple pseudo-section diagrams of the sandstone-type uranium ore target area varying with depth, obtained by multi-frequency phase multi-parameter induced polarization sounding method; An evaluation module is used to jointly invert the multiple pseudo-section diagrams to evaluate the depth profiles of different electrical parameters obtained by inversion and the drilling results of the sandstone-type uranium target area, and determine the correlation between the electrical parameters of the sandstone-type uranium deposit in the oil and gas basin and the distribution and mineralization of the uranium ore body.

9. An exploration device for sandstone-type uranium deposits in oil and gas basins, characterized in that: include: The second analysis module is used to analyze the groundwater geological conditions of the oil and gas basin and the uranium source conditions outside the basin, so as to make a preliminary evaluation of the uranium mineralization potential of the target area and determine the sandstone-type uranium target area of ​​the target area; The second acquisition module is used to obtain multiple pseudo-section diagrams of the sandstone-type uranium ore target area varying with depth, obtained by multi-frequency phase multi-parameter induced polarization sounding method; A determination module is used to jointly invert the plurality of pseudo-section diagrams to determine the distribution of uranium ore bodies and the mineralization of uranium ore bodies in sandstone-type uranium deposits based on the resistivity inversion profile diagram, the charge rate inversion profile diagram and the polarizability inversion profile diagram obtained by inversion, and the pre-constructed correlation between the electrical parameters of sandstone-type uranium deposits in oil and gas basins and the distribution of uranium ore bodies and the mineralization of uranium ore bodies; The correlation between the electrical parameters of the sandstone-type uranium deposit in the oil and gas basin and the distribution and mineralization of the uranium ore body is pre-constructed according to the multi-parameter evaluation method for sandstone-type uranium deposit in the oil and gas basin according to any one of claims 1 to 6.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, it implements the multi-parameter evaluation method for sandstone-type uranium deposits in oil and gas basins as described in any one of claims 1 to 6, or implements the exploration method for sandstone-type uranium deposits in oil and gas basins as described in claim 7.

11. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the multi-parameter evaluation method for sandstone-type uranium deposits in oil and gas basins as described in any one of claims 1 to 6 is implemented, or the exploration method for sandstone-type uranium deposits in oil and gas basins as described in claim 7 is implemented.

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