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公开(公告)号：EP1971672A2
公开(公告)日：2008-09-24
申请号：EP06840057.1
申请日：2006-11-29
IPC分类号： C10M173/00
CPC分类号： C10G29/20 , C09K8/524 , C10G2300/1033 , C10G2300/203 , C10G2300/80
摘要： Naphthenic acid solids and/or emulsions can be inhibited by introducing an additive to crude oil prior to or concurrent with the deprotonation of the naphthenic acids present in the crude oil. The additives may be surfactants and can be quaternary ammonium compounds, quaternary phosphonium compounds, and mixtures of both. The additives may also be linear compounds having at least two carboxylic acid or acrylic acid functional moieties.
摘要翻译： 通过在原油中存在的环烷酸脱质子之前或同时将添加剂引入原油中，可以抑制环烷酸固体和/或乳液。 添加剂可以是表面活性剂并且可以是季铵化合物，季鏻化合物以及两者的混合物。 添加剂也可以是具有至少两个羧酸或丙烯酸官能部分的线性化合物。
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公开(公告)号：EP2501898A2
公开(公告)日：2012-09-26
申请号：EP10832002.9
申请日：2010-11-09
CPC分类号： E21B37/06 , B08B7/0071 , C09K8/52
摘要： Generating heat within a combination solvent/acid system removes undesirable deposits from petroleum reservoir formations (especially the near well-bore region), oilfield equipment, and petroleum processing equipment. An exothermic reaction occurs between the solvent and the acid and the heat evolved helps remove organic solid deposits. The acids may include organic acid compounds, such as sulfonic acids, sulfuric acid and nitric acid. The solvents may include terpene- and terpene-derivative-containing solvents, including, but not necessarily limited to, limonene, pinene, dipentene, myrcene, turpentines and compounds having at least one double bond, such as methyl furan, dienes, styrene, vinyl acetate and the like. The exothermic reaction produces a great amount of heat, and together with using certain acids and solvents already known as effective to remove paraffin and asphaltene deposition, removing such deposits is improved.
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