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- W2366633444 abstract "On the basis of analyzing the matter of water-rich region in the deep limestone,a relation between porosity and impedance was derived by the Willie time-average equation.The impedance was calculated by recursive inversion and translated into the porosity,which coincided with the crack distribution characteristics and was verified by actual drilling.The results show that the impedance approximately obeys Gaussian distribution,errors inclined to high-and low-value are eliminated by a filter.The relation between porosity and impedance is suitable for limestone.When the impedance is increasing,the porosity is monotonously decreasing.The effect of pelitic sediments on porosity is neglected because of so small exploration area.According to the drilling verification,the limestone water-rich region exists while the porosity value above 0.162 and the maximum inflow of water is more than 90 m3/h." @default.
- W2366633444 created "2016-06-24" @default.
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- W2366633444 date "2009-01-01" @default.
- W2366633444 modified "2023-09-27" @default.
- W2366633444 title "Study of Predicting Water Abundance of Limestone by Recursive Inversion" @default.
- W2366633444 hasPublicationYear "2009" @default.
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