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Omnibearing direct current method

A direct current method, an all-round technology, applied in the field of direct current method of geophysical exploration, can solve the problem of low detection accuracy, and achieve the effect of improving the detection accuracy

Inactive Publication Date: 2011-11-09
林希仲 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although a lot of work has been done to innovate the device layout of the method during the development of the direct current method for many years, due to theoretical limitations, the detection accuracy of this method is generally lower than 1 / 6.

Method used

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  • Omnibearing direct current method

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Effect test

Embodiment approach

[0013] 1) Utilize boreholes for all-round direct current method: lay out power supply electrodes on the surface around the borehole (or place a power supply electrode at infinity); read the resistivity value of the well wall rock formation through the measuring electrodes in the borehole, On the contrary, the measurement electrodes are arranged around the borehole, and the power supply electrode is placed in the borehole (it is also possible to place a power supply electrode at infinity). Design the movement or layout of the power supply electrode and the measuring electrode, so that the data of the instrument at the observation point can better display the electrical characteristics of the formation, improve the detection accuracy, and obtain an all-round detection effect in depth and breadth. This method can comprehensively understand the geological structure of the rock and soil layer in the three-dimensional space around the borehole (from 0 to 50 meters) by changing the di...

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Abstract

By using an omnibearing direct current method, a traditional exploration form, such as arranging an electrode apparatus on surfaces of the earth, can be changed; the electrode apparatus is entered into an infinite full space field from an infinite half space field; precision and extent of direct current method exploration can be substantially improved. The method is characterized in that: the apparatus is adjusted correspondingly in all dimensions according to reality and different exploration purposes; an electric field of an observation point is received obvious perturbation through electrode shift or lateral line arrangement; onsite exploration is performed through multiple orientation, multimode and multisystem; a resistivity value or a conductivity value is collected orderly and compared with each other; exploration data of the omnibearing system is analyzed synthetically so as to minimize multi-solution conclusions of direct current method data; a stereo exploration result which accords with stratum geology can be acquired through mutual authentication of many data.

Description

Technical field: [0001] The invention relates to a direct current method of geophysical exploration, which uses a power supply electrode and a measurement electrode to perform direct current method detection in the field of infinite space. Background technique: [0002] At present, the theory of direct current prospecting is generally established within the scope of infinite half-space. On this basis, various practical detections are carried out. Although a lot of work has been done to innovate the device layout of the direct current method during the development of the method for many years, due to theoretical limitations, the detection accuracy of this method is generally lower than 1 / 6. In order to improve the exploration precision, reduce the multi-solution conclusion of data analysis, and expand the application field of direct current method. Therefore, a breakthrough should be made on the basis of the original theory, that is, to change the form that the device is on...

Claims

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Application Information

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IPC IPC(8): G01V3/04
Inventor 林希仲向新生
Owner 林希仲
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