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

An evaluation method, sandstone-type technology, applied in the field of uranium ore exploration, can solve problems such as prospect evaluation of difficult-to-sandstone-type uranium deposits

Pending Publication Date: 2021-03-09
BEIJING RES INST OF URANIUM GEOLOGY
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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

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Embodiment Construction

[0075] The present invention is described in further detail below in conjunction with embodiment.

[0076] The prospect evaluation method of sandstone-type uranium deposits in areas with strong oil and gas reduction at the margin of sedimentary basins includes the following steps:

[0077] Step 1: establish a stratum table; collect and analyze the regional geology and drilling comprehensive data of the strong oil and gas reduction area in the sedimentary basin, and establish the stratum information table of the area in chronological order with the group as the unit; the stratum information table includes: The original color of the strata, the color of the sandstone, whether it contains carbon debris or interbedded coal seams, the contact relationship of the strata, the buried depth of the stratum floor of all drilled holes, the thickness of the sandstone, and the sand content rate; the sandstone color includes: conglomerate color; the sandstone thickness includes: Thickness of...

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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, ...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06F119/12
CPCG06F30/20G06F2119/12
Inventor 杨烨许强李娟
Owner BEIJING RES INST OF URANIUM GEOLOGY
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