Method and device for performing layer position correction on resistivity section

Abstract

The invention relates to a method and a device for performing layer position correction on a resistivity section, belongs to the field of geological exploration, and particularly relates to a method and a device for performing layer position correction on a resistivity section. The method comprises the following steps: acquiring formation resistivity and depth information of an exploration area according to a drilling resistivity well logging curve; through statistics and analysis, acquiring a formation and geoelectric section type and determining an electrical mark layer; comparing the difference between the actual depth of the electrical mark layer and the depth of a section diagram point by point and determining the compensation depth of each measuring point; and performing compensationand correction on all the measuring points on a measuring line and completing the layer position correction of the resistivity section. On the basis of obtaining formation fluctuation and drilling resistivity well logging curves and on the basis of the electrical mark layer and the formation mark layer, the layer position mismatched phenomenon is corrected rapidly and accurately, and the qualityand the precision of the resistivity section are improved.

Description

technical field [0001] The invention relates to a method and device for horizon correction, belonging to the field of geological survey, in particular to a method and device for horizon correction on resistivity sections. Background technique [0002] The resistivity method is an important exploration method in geophysical prospecting. It expresses the change of the underground medium in the horizontal and depth directions in the form of a resistivity section map. be widely used. [0003] Due to the complexity of geological conditions, the actual work often faces complex situations such as terrain undulations, stratum slopes, and severe structures. Limited by the current technical level, the electrical prospecting theory is generally based on one-dimensional horizontal layered media, without considering the height difference between the measuring points, the slope of the stratum, and the lateral discontinuity of the lithology under actual conditions, so that the resistivity...

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Problems solved by technology

This method relies on the DC resistivity method with small pole spacing to obtain the surface resistivity value. Since the surface of the detection area is often not uniform, it is necessary to encrypt the collection points, which increases the workload in the field, and the data cannot be obtained when the grounding condition of the ground is not good. The application of the method has practical difficulties or even loses the basis of application

[0010] The methods mentioned above have announced the method of correcting the topographic influence in transient electromagnetic exploration based on physical simulation, numerical simulation, well data, low-temperature superconducting probe, shallow surface resistivity and other basic data, but none of them involve the method based on actual The geoelectric structure of the formation, the technology of horizon correction for the resistivity section obtained by various electromagnetic detection methods

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