Sedimentary basin edge strong oil gas reduction area sandstone type uranium mine distant view evaluation method

Abstract

The invention belongs to the technical field of uranium mine exploration, and particularly relates to a sedimentary basin edge strong oil and gas reduction area sandstone type uranium mine distant view evaluation method, which comprises the steps of 1, establishing a stratum table; 2, screening a uranium mineralization target layer; 3, delineating a sandstone-type uranium mine distant view evaluation area range; 4, determining a sandstone type uranium mineralization period; 5, determining the time of first large-scale oil gas spill in the sandstone-type uranium mine distant view evaluation area range; 6, compiling a sedimentary facies diagram of a uranium mineralization target layer in the sandstone-type uranium mine distant view evaluation area; and 7, establishing a sandstone-type uranium mine distant view evaluation model of the basin edge strong oil and gas reduction area of the sedimentary basin. According to the method, factors such as stratums, unconformity surfaces, oil-gas reduction, paleooxidation and sedimentary facies are integrated, the sandstone-type uranium ore distant view of the basin edge strong oil-gas reduction area of the sedimentary basin can be quantitativelyevaluated, and evaluation parameters are provided for sandstone-type uranium ore exploration of the area.

Description

technical field [0001] The invention belongs to the technical field of uranium ore exploration, and in particular relates to a prospect evaluation method for sandstone-type uranium deposits in areas with strong oil and gas reduction at the margin of basins. Background technique [0002] In areas with strong oil and gas reduction in sedimentary basins, due to strong seepage of oil and gas, the basin appears as an exudative basin, which inhibits the infiltration of oxygen-containing and uranium-containing fluids. Strong oil and gas reduction is unfavorable for sandstone-type uranium mineralization. Strong oil and gas action reduction covers the oxidation zone and uranium mineralization that may have formed in the early stage, and it is difficult to explore uranium deposits by looking for the oxidation zone-redox transition zone-reduction zone mode, which greatly increases the difficulty of prospect evaluation of sandstone-type uranium deposits in this type of area. Therefore, ...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a prospect evaluation method for sandstone-type uranium deposits in areas of strong oil and gas reduction at the edge of sedimentary basins, so as to solve the problem of strong oil and gas seepage in areas of sedimentary basins with strong oil and gas reduction. The transition zone-reduction zone mode is used to explore uranium deposits, and it is difficult to carry out the technical problems of prospect evaluation of sandstone-type uranium deposits in this type of area