翻訳と辞書 Words near each other ・ Wellcome Library ・ Wellcome Research Laboratories ・ Wellcome Trust ・ Wellcome Trust Centre for Cell-Matrix Research ・ Wellcome Trust Centre for Gene Regulation and Expression ・ Wellcome Trust Centre for Human Genetics ・ Wellcome Trust Centre for Neuroimaging ・ Wellcome Trust Centre for Stem Cell Research ・ Wellcome Trust Centre for the History of Medicine ・ Wellcome Trust Genome Campus ・ Wellcome Trust Sanger Institute ・ Wellcraft ・ WellDynamics ・ Well services ・ Well smack ・ Well stimulation ・ Well temperament ・ Well test ・ Well test (oil and gas) ・ Well Thought Out Twinkles ・ Well to the Bone ・ Well Told Story ・ Well Travelled Love ・ Well travelled road effect ・ Well Well Well ・ Well Well Well (album) ・ Well Well Well (John Lennon song) ・ Well Within Reason ・ Well World series ・ Well Worn Daffy Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Well stimulation ： ウィキペディア英語版 Well stimulation Well stimulation is a well intervention performed on an oil or gas well to increase production by improving the flow of hydrocarbons from the drainage area into the well bore. ==Cleaning the formation== The assortment of drilling fluid pumped down the well during drilling and completion can often cause damage to the surrounding formation by entering the reservoir rock and blocking the pore throats (the channels in the rock throughout which the reservoir fluids flow). Similarly, the act of perforating can have a similar effect by jetting debris into the perforation channels. Both these situations reduce the permeability in the near well bore area and so reduce the flow of fluids into the well bore. A simple and safe solution is to pump diluted acid mixtures from surface into the well to dissolve the offending material. Once dissolved, permeability should be restored and the reservoir fluids will flow into the well bore, cleaning up what is left of the damaging material. After initial completion, it is common to use minimal amounts of formic acid to clean up any mud and skin damage. In this situation, the process is loosely referred to as "well stimulation." Oftentimes, special interest groups that oppose oil and gas production refer to the process as "acidization," which is actually the use of acids in high volume and high pressure to stimulate oil production. In more serious cases, pumping from surface is insufficient as it does not target any particular location downhole and reduces the chances of the chemical retaining its effectiveness when it gets there. In these cases, it is necessary to spot the chemical directly at its target through the use of coiled tubing. Coiled tubing is run in hole with a jetting tool on the end. When the tool is at its target, the chemical is pumping through the pipe and is jetted directly onto the damaged area. This can be more effective than pumping from surface, though it is much more expensive, and accuracy is dependent on knowing the location of the damage. 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「Well stimulation」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.