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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 Corrected d-exponent ： ウィキペディア英語版 Corrected d-exponent ==Description== The Corrected d-exponent, also known as cd-exponent or more correctly dc-exponent (dc-exponent) as used in mud logging and formation pore pressure analysis in the oil industry, is an extrapolation of certain drilling parameters to estimate a pressure gradient for pore pressure evaluation while drilling. Normally this is done in over-pressured zones, but most mud logging contracts require it to be done at all times. It is regarded as one of the best tools for pore pressure evaluation. See mud log for an example of the corrected d-exponent plotted on a mud log. The parameter is an extension ("correction", hence the "c" notation) to the d-exponent method previously used for estimating formation pore pressures. The extension consists of a correction for the mud weight in use, compared to "standard" mud for the region. The parameters used to calculate dc-exponent values are: drilling rate (ROP), rotary speed, weight on bit, bit diameter and mud weight; it is plotted against drilled depth. 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「Corrected d-exponent」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.