New estimation methodologies for well logging problems via a combination of fuzzy Kalman filter and different smoothers
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- 作者：Sina Soltani sinasoltani@shirazu.ac.ir" class="auth_mail" title="E-mail the corresponding author ; Mojtaba Kordestani ; mojtaba.kordestani@shirazu.ac.ir" class="auth_mail" title="E-mail the corresponding author ; Paknoosh Karim Aghaee kaghaee@shirazu.ac.ir" class="auth_mail" title="E-mail the corresponding author
- 关键词：Well log ; Smoother ; Wavelet ; Kalman filter
- 刊名：Journal of Petroleum Science and Engineering
- 出版年：2016
- 出版时间：September 2016
- 年：2016
- 卷：145
- 期：Complete
- 页码：704-710
- 全文大小：1547 K
文摘
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This paper presents two new estimation methods for well logging estimation problem.
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Natural gamma-ray is considered as an instrument in well logging.
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The aim of this paper is estimating the concentrations of U, Th and K.
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Fuzzy Kalman filter is used for estimation.
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Two strong smoothers are utilized after fuzzy Kalman filter to reduce noise level.
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