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酸化解堵技术在特低渗透油藏的应用

PETROCHEMICAL INDUSTRY APPLICATION(2010)

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Abstract
元48长4+5油藏位于陕北斜坡中北部的姬塬东斜坡,主要为三角洲前缘水下分流河道沉积,粉细-细粒岩屑质长石砂岩,属于特低渗构造-岩性油藏.油藏地层水水型为氯化钙水型,与注入水配伍性较差,油井见水后在近井地带发生堵塞,造成油井油量下降,含水上升.主要对油藏见水机理进行分析,并分析了酸化解堵技术在实际应用中的效果.
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