清洁盐水封隔液的应用

Inner Mongolia Petrochemical Industry(2021)

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Abstract
封隔液主要起防腐和平衡压力的作用.普通清洁盐水封隔液在高温高压情况下,尤其是在酸性气井中的应用具有一定的局限性,例如CaCl2和溴盐加重都有不足.国外近年来研究并现场应用了碳酸钾、有机盐、磷酸盐、NaBr-pH缓冲剂体系等封隔液.国内的清洁盐水封隔液针对含硫油气田,主要有郑力会的Weigh2/Weigh3封隔液体系和郑义的甲酸盐封隔液体系.这些体系都是对普通清洁盐水封隔液在高温高压环境尤其是含硫气井下的应用改进.
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