Method for detecting deep jet-flow sedimentary deposit based on natural gamma-ray spectrum logging

A natural gamma-ray spectroscopy and sedimentary technology, which is used in measurement devices, nuclear radiation exploration, geophysical measurement, etc., and can solve the problems of high experimental cost, difficulty in drilling and coring of deep formations, and large demand for samples.

Pending Publication Date: 2021-09-07
XI'AN PETROLEUM UNIVERSITY
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, this type of technology needs to collect a large number of rock samples, but it is difficult to drill and coring deep formations, and it is difficult to achieve continuous sampling similar to surface or shallow formations
[0006] (2) The experiment is expensive and time-consu

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for detecting deep jet-flow sedimentary deposit based on natural gamma-ray spectrum logging
  • Method for detecting deep jet-flow sedimentary deposit based on natural gamma-ray spectrum logging
  • Method for detecting deep jet-flow sedimentary deposit based on natural gamma-ray spectrum logging

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0034] The present embodiment relates to a method for detecting deep jet sedimentary deposits based on natural gamma energy spectrum logging, comprising the following steps:

[0035] In this example, the exhalative sedimentary deposits of the Lower Cretaceous in the Hari sag in Inner Mongolia were detected, and the specific steps were as follows:

[0036] Step 1. The regional geological survey indicates that the Hari sag is a Mesozoic dustpan-shaped fault depression located in the northern part of Inner Mongolia. Its northern boundary fault extends down to the basement, and there are multiple periods of magmatic activity and volcanic eruption in the Early Cretaceous area, with developmental eruptions. Metallogenic geological conditions of flow sedimentary deposits.

[0037] In step 2, according to the metallogenic mechanism of jet-sedimentary deposits, faults can provide upward migration channels for deep hydrothermal fluids, so the areas near large faults are most likely to dev...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a method for detecting a deep jet-flow sedimentary deposit based on natural gamma-ray spectrum logging. The method comprises the steps of 1, selecting a drilled well or a drilled hole; 2, calculating the contents of uranium and thorium elements in the stratum; 3, analyzing the contents of uranium and thorium elements, and screening out a high uranium layer section; 4, identifying the vertical distribution of the jet-flow sedimentary deposit; 5, determining the thickness, continuity and uniformity of the jet-flow sedimentary deposit; 6, determining the depth position, the distribution layer position and the thickness change of the jet-flow sedimentary deposit; and 7, determining the spatial form and the metallogenic law of the jet-flow sedimentary deposit, and predicting a favorable exploration area. According to the method, the uranium content and the thorium content in the stratum are obtained by utilizing the characteristics of uranium enrichment and high uranium-thorium ratio of the SEXDEX type ore deposit and combining natural gamma-ray spectrum logging analyzing, and a continuous longitudinal section of the uranium content and the uranium-thorium ratio is established; and the method provided by the invention is a method for rapidly, accurately and economically screening out favorable SEDEX ore deposit exploration targets in the deep stratum.

Description

technical field [0001] The invention belongs to the field of mineral resources exploration; in particular, it relates to a method for detecting deep jet-flow sedimentary deposits based on natural gamma energy spectrum logging. Background technique [0002] With the continuous reduction of surface and shallow solid mineral resources, the exploration of solid mineral resources is gradually advancing to the deep. The rock geochemical method (also known as the primary halo method) is the main method to find solid mineral deposits or ore body exploration at home and abroad. Rock geochemical anomalies between the surrounding rocks, which in turn determine the distribution of ore deposits or ore bodies. [0003] The existing technology is mainly based on rock geochemical methods. Such methods mainly collect samples by selecting spatial locations where hydrothermal uranium deposits may develop, and carry out related mineral identification and elemental analysis; on the basis of the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01V5/12
CPCG01V5/12
Inventor 陈志鹏任战利谭成仟王铭显张少华王鹏涛廖芸
Owner XI'AN PETROLEUM UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap