Induced polarization sounding multichannel observation method

Abstract

An induced polarization sounding multichannel observation method belongs to the technical field of an observation method. The invention particularly relates to an induced polarization sounding multichannel observation method and provides an induced polarization sounding multichannel observation method which has the advantage of high field data acquisition efficiency. The method comprises the following steps: 1), placing a power supply electrode as an infinite distance electrode at a position quite far away from a well head, placing other power supply electrodes and measuring electrodes into a well, and performing power supply and measuring in the well from the bottom to the top; and 2), finishing measuring a first depth measurement point, and the power supply electrodes and the measuring electrodes integrally moving upwards by one point position; and finishing measuring a second depth measurement point, continuing to move upwards by one point position, then continuing power supply and measuring, and repeating the previous procedures until the measurement of the whole well is finished.

Description

technical field [0001] The invention belongs to the technical field of observation methods, in particular to an IP sounding multi-channel observation method. Background technique [0002] At present, in the mid-deep mineral, water resources and engineering exploration, the widely used electromagnetic sounding methods mainly include AMT method, CSAMT method, EH-4 method and TEM method, and they have achieved good exploration results in application. As for the high-density resistivity method, vertical resistivity sounding and induced electric sounding method in the direct current method, they also have their unique advantages when detecting objects with a depth of tens of meters to hundreds of meters, that is, simple operation, Economic and quantitative inversion interpretation methods are relatively mature. However, when detecting mid-deep geological targets, for the conventional electrical sounding method that belongs to geometric detection, the detection depth can only be ...

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Problems solved by technology

However, when detecting mid-deep geological targets, for the conventional electrical sounding method that belongs to geometric detection, the detection depth can only be increased by increasing the power supply electrode distance. If the original observation method is still used (that is, increasing the power supply electrode distance AO, the measurement distance MO is fixed or appropriately increased), which will inevitably reduce work efficiency and increase data acquisition costs