A method and device for horizon correction on resistivity sections
A technology of resistivity and geoelectrical cross section, applied in the field of horizon correction, can solve the problems of not being able to obtain data, losing the basis of application, not involving, etc., to achieve the effect of a wide range of applications and a wide range of methods.
Active Publication Date: 2019-07-05
XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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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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[0061] 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. It should be noted that, in the drawings or descriptions of the specification, similar or identical parts all use the same figure numbers. Implementations not shown or described in the accompanying drawings are forms known to those of ordinary skill in the art. Additionally, while illustrations of parameters including particular values may be provided herein, it should be understood that the parameters need not be exactly equal to the corresponding values, but rather may approximate the corresponding values within acceptable error margins or design constraints. The stratum nouns mentioned in the examples are just examples to clearly illustrate the implementation mode, and are not intended to limit the protection scope of the pre...
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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. Including: Obtain formation resistivity and depth information in the detection area according to the drilling resistivity logging curve; Obtain the formation geoelectric section type through statistics and analysis, determine the electrical marker layer; compare the actual depth of the electrical marker layer with the section map Determine the compensation depth of each measuring point based on the difference in depth; perform compensation and correction on all measuring points on the survey line to complete the layer correction of the resistivity section. The present invention can quickly and accurately correct the layer mismatch phenomenon on the basis of obtaining formation fluctuations and borehole resistivity logging curves, and improve the quality and accuracy of the resistivity section .
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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IPC IPC(8): G01V3/38
CPCG01V3/38
Inventor 王鹏冯宏曾方禄姚伟华郭恒王益李丹
Owner XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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