Method for detecting whole field with electrical source transient electromagnetic method

A technology of transient electromagnetic method and detection method, which is applied in the field of geophysical exploration, can solve problems such as the inability to realize multi-channel transient electromagnetic method, and achieve the effect of overcoming the relatively small detection depth and good resolution ability.

CN102419452BActive Publication Date: 2013-04-10INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2013-04-10

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Abstract

The invention provides a method for detecting a whole field with an electrical source transient electromagnetic method. The method concretely comprises the following steps of: carrying out deep exploration on a deep geologic target body by adopting a detecting method of an electrical source transient electromagnetic method under the condition of a near field source to obtain observation data; andprocessing and explaining the observation data by adopting a transient electromagnetic whole field theory to finish the fine exploration for the deep geologic target body and obtain the information of the deep geologic target body. The method for detecting the whole field with the electrical source transient electromagnetic method can be used for rapidly, efficiently and accurately realizing the three-dimensional exploration for the deep geologic target body, thereby obtaining the information of the finer deep geologic target body.
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Description

technical field

[0001] The invention relates to the technical field of geophysical prospecting, in particular to an electric source transient electromagnetic method full-field detection method. Background technique

[0002] Transient Electromagnetic Field (TEM) is a time-domain artificial source electromagnetic detection method based on the principle of electromagnetic induction. It is excited by a step-shaped wave electromagnetic pulse, and uses an ungrounded loop to launch a primary field underground. After the primary field is powered off, it measures the change of the induced secondary field generated by the underground medium over time to achieve various geological surveys. A method of geophysical prospecting for a target.

[0003] With the development of science and technology and the increasing needs of human beings, contemporary society is facing a series of problems such as resources, population, food and the environment; resource shortages and earthquake disasters...

Examples

Embodiment Construction

[0071] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0072] One of the core ideas of the present invention is to provide a brand-new electric source transient electromagnetic method for detecting the whole field. First, in the case of near-field sources, the detection method of electrical source transient electromagnetic method is used to conduct deep detection of deep geological targets to obtain observation data; secondly, the observation data are processed and interpreted using the whole-field theory to complete Fine detection of deep geological targets. This brand-new full-field detection method of electrical source transient electromagnetic method can quickly, efficiently and accurately realize the three-dimensional detection of deep geological targets, so as to obtain more det...