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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Amott test ： ウィキペディア英語版 Amott test The Amott test is one of the most widely used empirical wettability measurements for reservoir cores in petroleum engineering. The method combines two spontaneous imbibition measurements and two forced displacement measurements. This test defines two different indices: the Amott water index ($I\_w$) and the Amott oil index ($I\_o$). ==Amott–Harvey index== The two Amott indices are often combined to give the Amott–Harvey index. It is a number between -1 and 1 describing wettability of a rock in drainage processes. It is defined as: :$AI=I\_w-I\_o$ These two indices are obtained from special core analysis (SCAL) experiments (porous plate or centrifuge) by plotting the capillary pressure curve as a function of the water saturation as shown on figure 1: :$I\_w=\backslash frac\}\}$ with $S\_$ is the water saturation for a zero capillary pressure during the imbibition process, $S\_$ is the irreducible water saturation and $S\_$ is the residual oil saturation after imbibition. :$I\_o=\backslash frac\}\}$ with $S\_$ is the oil saturation for a zero capillary pressure during the secondary drainage process, $S\_$ is the irreducible water saturation and $S\_$ is the residual non-wetting phase saturation after imbibition. A rock is defined as: * Water wet when the Amott–Harvey index is between 0.3 and 1, * Weakly water wet when the Amott–Harvey index is between 0 and 0.3, * Weakly oil wet when the Amott–Harvey index is between -0.3 and 0, * Oil wet when the Amott–Harvey index is between -1 and -0.3. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Amott test」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.