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去污压裂技术研究

漆雕良,漆国斌, 段世峰,张东阳

WELL TESTING（2004）

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Abstract
钻井、固井在油井近井地带遗留有污染物,常规压裂时被压裂液带向油层深处产生二次污染,影响油井压裂后的增产效果和稳产.去污压裂技术是在压裂施工前向地层挤入定量活性水清洗、稀释污物,再依靠地层及液体的弹性能量将污物吐出,并排离封隔器以下井筒部位,然后进行压裂施工.现场试验资料证明,该技术可以清除或减轻二次污染,增产效果明显,适用性强.
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