Information processing system and method for array induction logging curve environment influence law

Abstract

The invention belongs to the technical field of information processing, and discloses an information processing system and method for an array induction logging curve environment influence law, and the method comprises the steps: building a stratum model, and completing the electromagnetic field decomposition, wave field recursion, magnetic component solving and conductivity calculation, curve synthesis and the application range of an analysis instrument based on a numerical mode matching method; carrying out model establishment and response calculation of typical stratums, and studying arrayinduction logging original curve characteristics in uniform stratums, borehole stratums, non-invasive stratums, invasive stratums and stratums of different invasion types; analyzing curve characteristic of drilling fluid resistivity and borehole size influence in the sand mudstone section; analyzing curve characteristics of invasion and surrounding rock influence in the sand mudstone section; andselecting a synthetic curve for providing a basis for oil-water identification work. According to the method, the accuracy of interpretation results of the array induction logging curve can be improved, and a theoretical basis is provided for stratum evaluation and oil and gas identification.

Description

technical field [0001] The invention belongs to the technical field of information processing, and in particular relates to an information processing system and method for the law of environmental influence on array induction logging curves. Background technique [0002] Array induction logging is an induction resistivity logging method realized on the basis of the rapid development of electronic and computer technology. As early as 1957, Poupon proposed the idea of ​​array induction logging and "software focusing", but it was not until the 1990s that commercial array induction logging tools appeared. At present, array induction logging tools are relatively mature, including AIT, HDIL, HRAI, HIL and MIT. All the above-mentioned array induction logging tools have been applied in China. Because of their high resolution and good reflection on the resistivity profile, they have been widely recognized, so they are used more and more. However, by summarizing the data and applica...

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Problems solved by technology

[0006] To sum up, the problems existing in the existing technology are: due to the influence of the borehole, intrusion, surrounding rock and other environmental influences and the influence of the skin effect and the limited resolution of the response function, the measurement signal cannot effectively reflect the original formation information; The abnormality of the induction logging curve, the quality of the array induction logging curve is reduced, and the oil and gas layers cannot be accurately identified, so that effective oil and gas exploration and development can be carried out

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