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SDLA: Fighting Skin Damage in Colombian Fields—A War Story

机译:SDLA:抗击哥伦比亚田地的皮肤伤害-战争故事

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The well damage history in the fields operated by BPColombia has showed an interesting performance in allproducer and injector wells. The abnormal productivitydecline detected since the start-up in 1991 was a clearevidence of the skin damage magnitude, in fact, the fieldshave not plateau history. The initial high oil and gas ratesproduction added to strong geological structures in which avariety of fluids have been producing (critical volatile and gascondensate) have contributed to the development of a verycomplex damage scenario; main damage factors identified atearly stage of production were fines migration and mineralscales (calcite, siderite, barite, celestite and iron compounds).Research regarding acid stimulation and mineral scaleinhibition was the first step trying to mitigate the high oil ratedecline. New damage mechanisms were detected as long asthe fields were in production, water and condensate blockage,organic scales (wax and asphaltenes), iron sulfide scales, andwettablity changes were the main damage mechanismsdetected. Engineering work, laboratory and geological studies,backflow analysis, third parties investigation and an extensivefield trial program have been developed to determine the beststimulation program that should be applied in each one ofproducer/injector wells. Although high success removingformation damage has been obtained, it has been necessary tofocus additional effort to find and test new technologyaddressed to increase both IIOR and stimulation lifetime.
机译:BP所经营油田的油井损害历史 哥伦比亚在所有方面都表现出了有趣的表现 生产井和注入井。异常生产力 自1991年启动以来发现的下降趋势很明显 皮肤损伤程度的证据,实际上是野外 没有高原历史。最初的高油气价格 生产增加了强大的地质结构,其中 产生了各种各样的流体(临界挥发物和气体 冷凝物)促成了非常 复杂的损害情况;确定的主要损害因素 生产的初期是细粒迁移和矿物质 鳞片(方解石,菱铁矿,重晶石,天青石和铁化合物)。 关于酸刺激和矿物质垢的研究 抑制是试图减轻高油价的第一步 衰退。只要发现新的损坏机制 田间有生产,水和冷凝水堵塞, 有机垢(蜡和沥青质),硫化铁垢和 润湿性变化是主要的破坏机制 检测到。工程工作,实验室和地质研究, 回流分析,第三方调查和广泛的 已经制定了现场试验计划,以确定最佳方案 刺激程序,应在以下每一项中应用 生产井/注入井。尽管成功移除 已经获得地层损害,有必要 集中精力寻找和测试新技术 旨在增加IIOR和刺激寿命。

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