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Method for counting large-scale charging time of ore-bearing strata oil gas of sandstone-type uranium ore

A sandstone-type, large-scale technology, applied in the field of statistics of large-scale oil and gas filling time in sandstone-type uranium ore-bearing layers, can solve the problems of geological conditions, oil and gas escape, etc. that cannot reach the indirect dating of authigenic illite and inclusions

Inactive Publication Date: 2019-12-20
BEIJING RES INST OF URANIUM GEOLOGY
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Problems solved by technology

However, for the sandstone-type deposits with the characteristics of "produced in the basin margin, shallow buried, low formation temperature and pressure, completely open system, and multiple phases of oil and gas dissipation", the above methods often fail to achieve authigenic illite and packaged deposits. Geological conditions for indirect dating

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  • Method for counting large-scale charging time of ore-bearing strata oil gas of sandstone-type uranium ore
  • Method for counting large-scale charging time of ore-bearing strata oil gas of sandstone-type uranium ore
  • Method for counting large-scale charging time of ore-bearing strata oil gas of sandstone-type uranium ore

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[0025] A method for counting the large-scale oil and gas charging time of the sandstone-type uranium ore-bearing layer of the present invention will be described in detail below in conjunction with the accompanying drawings and examples.

[0026] A method for counting the large-scale oil and gas charging time of sandstone-type uranium ore-bearing layers, specifically comprising the following steps:

[0027] Step S1: Data-related geological data, including the research status of the internal relationship between hydrocarbon fluids and uranium mineralization, the age of hydrocarbon generation-oil and gas accumulation of source rocks in the basin, and the age of sandstone-type uranium deposits;

[0028] Step S2: collecting ore-bearing sandstone samples in sandstone-type uranium mining areas, including rich ore samples and ore-free samples;

[0029] Step S3: Make the rich ore sample into a fluid inclusion sheet, select apatite from the ore-free sample, and observe the fluid inclus...

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Abstract

The invention belongs to the technical field of uranium ores, and particularly relates to a geological method for counting large-scale charging time of ore-bearing strata oil gas of sandstone-type uranium ore. The geological method comprises the steps of S1, preparing related geological document; S2, acquiring an ore-bearing strata sandstone sample of the sandstone-type uranium ore, including an ore-rich sample and an ore-free sample; S3, fabricating fluid inclusion from the ore-rich sample, selecting apatite from the ore-free sample, and observing the fluid inclusion; S4, completing temperature measurement operation of the fluid inclusion on the basis of fluid inclusion observation, and performing comprehensive analysis on uniform temperature data to obtain a uniform temperature peak; S5,inverting thermal evolution history of ore-bearing strata of the sandstone-type uranium ore by apatite fission track method; and S6, projecting the uniform temperature peak obtained in the step S3 onto the thermal evolution history of the ore-bearing strata obtained in the step S4, and indirectly counting large-scale charging time and issue of the ore-bearing strata oil gas of the sandstone-typeuranium ore.

Description

technical field [0001] The invention belongs to the technical field of uranium mines, and in particular relates to a method for counting the large-scale oil and gas filling time of sandstone-type uranium ore bearing layers. Background technique [0002] In most basins at home and abroad, the distribution rules of internal oil and gas-marginal uranium deposits, and lower oil and gas-upper uranium deposits are generally formed, and oil-uranium has a close temporal and spatial distribution relationship. During the mineralization process of sandstone-type uranium deposits, dissipated oil and gas mainly affect the formation of uranium deposits through adsorption, complexation, and reduction, and a large number of sandstone-type uranium mineralization models coupled with oil and gas have been established, such as "docking type" or "Uranium-water" contact zone type, Bashbulak land bitumen superimposed interlayer oxidation mineralization model, Dongsheng multi-component fluid superi...

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Application Information

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IPC IPC(8): G01V9/00
CPCG01V9/00
Inventor 丁波刘红旭易超黄少华张宾
Owner BEIJING RES INST OF URANIUM GEOLOGY
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