An evaluation method suitable for favorable sand bodies of sandstone-type uranium deposits in interlayer oxidation zones
A technology for interlayer oxidation zones and beneficial sand bodies, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as lack of effective evaluation methods, and achieve effective evaluation results
Active Publication Date: 2018-07-06
BEIJING RES INST OF URANIUM GEOLOGY
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[0003] The technical problem solved by the present invention is the lack of an effective evaluation method for favorable sand bodies of sandstone-type uranium deposits in the prior art, and further provides a method capable of effectively evaluating favorable sand bodies of sandstone-type uranium deposits
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[0038] The technical solutions and beneficial effects of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0039] The mineralization process of large interlayer oxidation zone sandstone-type uranium deposits begins with the weathering of uranium-rich rocks (layers) in the erosion source area of the basin margin and the oxidation of the ore-bearing layer itself. The process of uranium activation-migration-precipitation occurs in the sand body with large scale and stability, which is conducive to uranium migration and precipitation. Therefore, whether the sand body has the conditions for uranium mineralization depends on several factors such as the structural conditions of the uranium ore-forming area, the uranium source conditions of the ore-bearing layer, and the development characteristics of the sand body.
[0040] See attached figure 1 , the method for evaluating favorable sand bodies of interl...
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The invention discloses an estimation method for favorable sand of sandstone-type uranium deposit adapted to an interlayer oxidation zone. The estimation method comprises following steps of: S10, estimating sand in regard to growth characteristics of epigenetic alteration of sand bodies. The S10 step comprises concrete steps of establishing a spatial distribution map of the interlayer oxidation zone for target stratum in a research area, making a preliminary judgment of favorable sand; setting up geo-chemical indices of oil-bearing sandstone in the research area; and further judging favorable sand on the above-mentioned basis. The estimation method for favorable sand of sandstone-type uranium deposit adapted to the interlayer oxidation zone has following beneficial effects: based on spatial distribution map of the interlayer oxidation zone for target stratum in a research area and geo-chemical indices of oil-bearing sandstone, judgments of sand bodies can be more effectively made by starting from self characteristic of sand bodies.
Description
technical field [0001] The invention belongs to the field of geological exploration of sandstone-type uranium deposits in interlayer oxidation zones, and in particular relates to a method capable of effectively evaluating favorable sand bodies of sandstone-type uranium deposits. Background technique [0002] In recent years, sandstone-type uranium deposits have become one of the main types of uranium deposits developed in my country. As the name implies, the ore-holding carrier of sandstone-type uranium deposits is the sand body in the sedimentary basin strata. However, not all sand bodies have the conditions to form sandstone-type uranium deposits. Through the evaluation of favorable sand bodies for sandstone-type uranium deposits, it can be preliminarily determined which sand bodies have a greater possibility of mineralization, so as to provide a basis for the geological analysis of sandstone-type uranium deposits. To provide guidance for exploration, the current evaluati...
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IPC IPC(8): G06F19/00
Inventor 蔡煜琦易超李西得张康陈心路王明太
Owner BEIJING RES INST OF URANIUM GEOLOGY