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Layered Polarized Medium Frequency Domain Induced Polarization Effects Research

Posted on:2003-11-17Degree:MasterType:Thesis
Country:ChinaCandidate:Z Z XiFull Text:PDF
GTID:2190360062490397Subject:Earth Exploration and Information Technology
Abstract/Summary:PDF Full Text Request
Multi-polarized bodies are important for exploring metal mine , coal, oil and underwater, the same as improving environments , geological reconnaissance, and so on. In order to evaluate the insidious Multi-polarized bodies , The spectra of phase, relative phase and magnitude of induced polarization in frequency domain over a multi-layered earth are calculated and compared with the data in field.Firstly, The Cole-Cole relaxation Model of a small section of a mineralized rock is described, the second , all components of it's complex resistivity are formulated and calculated by a subprogram of FORTRAN language. The third , the principals of all components (including phase and magnitude) are discussed while changing the parameters of The Cole-Cole relaxation Model. Especially, how kinds .volume and structure of sulfides to effect the time constant are summarized .Without electromagnetic coupling ,the potential of pore current source over multi-layered polarizable models is formula on basis of the DC pore current source over multi-layered earth. At the same time ,the recursion formulation of CR about Schlumberger array is defined.A linear digital filtering algorithm is presented for rapid and accurate numerical evaluation of Hankel transform integrals of orders 0 and 1 containing related complex kernel function; The spectral curves of apparent complex resistivity-phase and the spectra of two A-space (Schlumberger array) over multi-layered polarizable models are calculated by selecting typical parameters in the article.The response (including resistivity, phase .relative phase , PFE) of insidious multi-polarized bodies is analysed by the sounding data from the mine . Especially using relative phase, try to discrimination of multi-polarized bodies which exists lengthways. As a result, relative phase measurement is an effect method to discriminate different mineralized rocks. The result of 1-D forward is used to explain the sounding curve in fields and the explanation is approximately fitted to the insidious mine bodies.
Keywords/Search Tags:IP in frequency domain, insidious multi-polarized bodies, Col-Cole relaxation model, 1-D forward, multi-layered polarizable models
PDF Full Text Request
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