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在德克萨斯州西部的二叠纪盆地,有许多油井存在与酸化有关的酸渣问题,不同油井的酸渣是相同的,经鉴定是被富含沥青烯的有机固体所稳定的一种粘性乳状液。原油中酸渣的形成随着沥青烯和树脂的含量、原油的基类数和酸中的Fe3+含量的增加而增加。在测试的9种工业用酸体系中,只有3种对防止酸渣的形成有效,都采用了新颖的控铁技术,即三价铁离子的催化还原。有几种工业溶剂和普通溶剂体系能有效分解酸渣,其中包括一种芳香族溶剂(如二甲苯)与异乙醇(以2:1的体积比配制或与乙二醇-丁醚(EGMBE)(以2:1或3:1的体积比配制)的混合液。酸的配方和溶剂体系的选择原则是效益好、操作安全,已在矿场成功实施。如果在二叠纪盆地的一些油井上早日采用该研究成果,可以从99口井中多采出原油574桶/天,据此估计一年可增加收入300万美元。
In the Permian basins in western Texas, there are many oil sour problems associated with acidification. Sludge from different wells is identical and is identified as being stabilized by an asphaltene-rich organic solid Viscous emulsion. The formation of acid residues in crude oil increases with the content of asphaltenes and resins, the base number of crude oils and the content of Fe3 + in the acid. Of the nine industrial acid systems tested, only three were effective in preventing the formation of sourdough and the novel controlled iron technology, the catalytic reduction of ferric iron, was employed. There are several industrial and common solvent systems that can effectively decompose acid residues, including an aromatic solvent (such as xylene) and isobutanol (in a volumetric ratio of 2: 1 or with ethylene glycol monobutyl ether (EGMBE) (In a 2: 1 or 3: 1 volume ratio) .The acid formulation and solvent system selection principle is good, safe, and has been successfully implemented in the mine.If the oil in the Permian Basin, some of the oil As early as possible, the well uplifted the results of the study, which resulted in an additional 574 barrels of crude oil per day from 99 wells, which is estimated at an annual increase of 3 million U.S. dollars.