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海上油田注水处理用粘土防膨剂的室内筛选

Chemical Engineering of Oil & Gas(2012)

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Abstract
针对海上油田储层特点筛选粘土防膨剂,对控制储层水敏伤害和保障整个油田的持续高效开发有非常重要的意义.综合多种防膨剂评价方法的优点,采用静态与动态相结合的实验评价方法,筛选了适用于海上某油田注水开发的粘土防膨剂.优选出质量分数为1%的FP-3A粘土防膨剂,静态评价离心法其防膨率为79.1%,X-射线衍射法防膨率为54.6%,膨胀仪法防膨率为80.7%,岩心线性膨胀率为0.73%,每100g静态吸附量0.29 g;动态评价渗透率保留率大于70%,最佳注入质量分数为0.5%~1.0%,且渗透率波动范围小,防膨效果稳定且作用时间长,适于海上某油田注水开发应用.
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Key words
screening,water sensitivity damage,anti-swelling rate,anti-swelling agent,offshore oil field
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