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深井高破裂深层低腐蚀性加重酸应用研究——以元坝区块为例

Natural Gas Exploration and Development(2011)

Cited 23|Views23
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Abstract
针对元坝区块部分异常高破裂压力深层采用现有的装备和常规工艺难以实施改造作业的现状,通过酸液类型优选、酸浓度优化,缓蚀机理分析和加重剂、缓蚀剂等优选和配方优化,研究出了适合于该区块砂岩和碳酸盐岩高破裂深层低腐蚀性加重酸液体系,酸液密度达1.8g/cm3以上,160℃高温下动态腐蚀速率小于30g/(m2.h),现场应用取得了明显效果。
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Key words
pretreatment,high fracturing pressure,deep well,low corrosivity,weighted acidizing
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