Method for rapidly delineating position of paleo-interlayer oxidation front line in oil gas covering area

A frontier, oil and gas technology, applied in the evaluation of sandstone-type uranium ore-forming potential and comprehensive ore prospecting in the basin, can solve the problems of difficult ore prospecting and identification of paleo-oxidation fronts, and achieve the goal of improving ore prospecting efficiency and saving costs Effect

Active Publication Date: 2018-04-10
BEIJING RES INST OF URANIUM GEOLOGY
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Problems solved by technology

However, in oil and gas-bearing basins, controlled by oil and gas exudation, the paleo-layer oxidation zone of the target layer is often covered by oil and gas in a large are

Method used

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  • Method for rapidly delineating position of paleo-interlayer oxidation front line in oil gas covering area
  • Method for rapidly delineating position of paleo-interlayer oxidation front line in oil gas covering area
  • Method for rapidly delineating position of paleo-interlayer oxidation front line in oil gas covering area

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Embodiment Construction

[0034] The present invention is described in further detail below in conjunction with embodiment.

[0035] As shown in Figure 1, a method for quickly delineating the position of the oxidation front line between paleolayers in the oil and gas cover area provided by the present invention includes the following steps:

[0036] (1) Determine the paleo-layer working area and select the target layer in the oil and gas cover area;

[0037] The above-mentioned work area can be selected from the Karamay area on the northwestern margin of the Junggar Basin, and the target layer is the Middle and Lower Jurassic.

[0038] (1.1) According to the size of the paleo-layer work area in the oil and gas cover area, select a uranium ore geological map with an appropriate scale in the work area as the base map for prediction and evaluation;

[0039] For example, choose a uranium mine geological map with a scale between 1:50,000 and 1:500,000; a 1:200,000 uranium mine geological map in the Karamay...

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Abstract

The invention belongs to the technical field of sandstone type uranium mineralization potential evaluation and comprehensive prospecting in the basin, and specifically discloses a method for rapidly delineating the position of a paleo-interlayer oxidation front line in an oil gas covering area. The method includes (1) determining the paleo layer working area of the oil gas covering area and selecting a destination layer; (2) selecting n uranium deposits that are similar to the working area in the oil gas covering area in the previous step (1); (3) determining the similarity Si between the n uranium deposits and the working area in step (2); (4) determining the front line development rate Vi for the n uranium deposits in step (2); and (5) delineating the paleo oxidation front line of the working area. According to the method, the paleo-interlayer oxidation front line development position can be quickly and efficiently delineated, the prospecting efficiency is improved, and the prospecting cost is saved.

Description

technical field [0001] The invention belongs to the technical field of sandstone-type uranium mineralization potential evaluation and comprehensive prospecting in basins, and in particular relates to a method for quickly delineating the development position of an oxidation front line between paleolayers in a cover area of ​​an oil-gas basin. Background technique [0002] The theory of interlayer infiltration suggests that the uranium-containing oxygen-containing fluid at the basin edge migrates forward along the target layer, and as the oxygen in the interlayer water is continuously consumed, the hexavalent uranium will be reduced to Tetravalent uranium was precipitated and enriched, and continuously "rolled" forward to form a crescent-shaped ore body (Granger H.C. and Warren C.G., 1964, 1974; Shawe D.R. and Granger H.C., 1965; Shmaleovich E.M. and Maximova М.Ф., 1993). The ore bodies are usually located at the transitional part between the yellow epigenetic oxidized sand b...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/02
CPCG06Q50/02G16Z99/00
Inventor 何中波黄少华许强冀华丽
Owner BEIJING RES INST OF URANIUM GEOLOGY
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